./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekcba_aso.1.M4-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c9bdac7-c316-41ae-9b62-8373738043ab/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c9bdac7-c316-41ae-9b62-8373738043ab/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c9bdac7-c316-41ae-9b62-8373738043ab/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c9bdac7-c316-41ae-9b62-8373738043ab/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekcba_aso.1.M4-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c9bdac7-c316-41ae-9b62-8373738043ab/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c9bdac7-c316-41ae-9b62-8373738043ab/bin/uautomizer-IVEQpCNsaX --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 64d7e25d2b411aa83621d9b12af66c6bbf36b903d9ea3c8a9dc9ced9d60fa3c1 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 09:44:30,516 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 09:44:30,532 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 09:44:30,616 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 09:44:30,617 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 09:44:30,623 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 09:44:30,626 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 09:44:30,629 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 09:44:30,632 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 09:44:30,633 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 09:44:30,635 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 09:44:30,637 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 09:44:30,638 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 09:44:30,639 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 09:44:30,641 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 09:44:30,643 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 09:44:30,645 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 09:44:30,647 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 09:44:30,649 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 09:44:30,652 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 09:44:30,655 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 09:44:30,657 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 09:44:30,659 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 09:44:30,661 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 09:44:30,665 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 09:44:30,666 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 09:44:30,666 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 09:44:30,667 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 09:44:30,668 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 09:44:30,670 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 09:44:30,670 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 09:44:30,672 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 09:44:30,673 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 09:44:30,674 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 09:44:30,676 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 09:44:30,676 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 09:44:30,678 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 09:44:30,678 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 09:44:30,678 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 09:44:30,680 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 09:44:30,681 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 09:44:30,682 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c9bdac7-c316-41ae-9b62-8373738043ab/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-09 09:44:30,711 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 09:44:30,711 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 09:44:30,712 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 09:44:30,712 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 09:44:30,714 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 09:44:30,714 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 09:44:30,714 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 09:44:30,714 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 09:44:30,715 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 09:44:30,715 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 09:44:30,715 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 09:44:30,715 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 09:44:30,716 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 09:44:30,716 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 09:44:30,716 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 09:44:30,716 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 09:44:30,717 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 09:44:30,717 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 09:44:30,717 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 09:44:30,717 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 09:44:30,718 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 09:44:30,718 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 09:44:30,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:44:30,718 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 09:44:30,719 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 09:44:30,719 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 09:44:30,719 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 09:44:30,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 09:44:30,720 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 09:44:30,720 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 09:44:30,720 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 09:44:30,720 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 09:44:30,720 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c9bdac7-c316-41ae-9b62-8373738043ab/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c9bdac7-c316-41ae-9b62-8373738043ab/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 64d7e25d2b411aa83621d9b12af66c6bbf36b903d9ea3c8a9dc9ced9d60fa3c1 [2021-11-09 09:44:31,085 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 09:44:31,136 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 09:44:31,140 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 09:44:31,143 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 09:44:31,144 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 09:44:31,146 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c9bdac7-c316-41ae-9b62-8373738043ab/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/seq-mthreaded/rekcba_aso.1.M4-2.c [2021-11-09 09:44:31,268 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c9bdac7-c316-41ae-9b62-8373738043ab/bin/uautomizer-IVEQpCNsaX/data/d11e09b10/1d0fd63301054283aada5ca9d6ca11e8/FLAGf529c45a7 [2021-11-09 09:44:32,588 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 09:44:32,589 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c9bdac7-c316-41ae-9b62-8373738043ab/sv-benchmarks/c/seq-mthreaded/rekcba_aso.1.M4-2.c [2021-11-09 09:44:32,650 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c9bdac7-c316-41ae-9b62-8373738043ab/bin/uautomizer-IVEQpCNsaX/data/d11e09b10/1d0fd63301054283aada5ca9d6ca11e8/FLAGf529c45a7 [2021-11-09 09:44:32,749 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c9bdac7-c316-41ae-9b62-8373738043ab/bin/uautomizer-IVEQpCNsaX/data/d11e09b10/1d0fd63301054283aada5ca9d6ca11e8 [2021-11-09 09:44:32,753 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 09:44:32,757 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 09:44:32,762 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 09:44:32,762 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 09:44:32,768 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 09:44:32,769 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:44:32" (1/1) ... [2021-11-09 09:44:32,770 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47f77ec2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:44:32, skipping insertion in model container [2021-11-09 09:44:32,771 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:44:32" (1/1) ... [2021-11-09 09:44:32,780 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 09:44:32,985 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:44:33,367 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c9bdac7-c316-41ae-9b62-8373738043ab/sv-benchmarks/c/seq-mthreaded/rekcba_aso.1.M4-2.c[2232,2245] [2021-11-09 09:44:34,909 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:44:34,941 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 09:44:34,976 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c9bdac7-c316-41ae-9b62-8373738043ab/sv-benchmarks/c/seq-mthreaded/rekcba_aso.1.M4-2.c[2232,2245] [2021-11-09 09:44:36,215 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:44:36,268 INFO L208 MainTranslator]: Completed translation [2021-11-09 09:44:36,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:44:36 WrapperNode [2021-11-09 09:44:36,269 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 09:44:36,271 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 09:44:36,271 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 09:44:36,272 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 09:44:36,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:44:36" (1/1) ... [2021-11-09 09:44:36,887 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:44:36" (1/1) ... [2021-11-09 09:45:09,508 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 09:45:09,510 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 09:45:09,510 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 09:45:09,510 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 09:45:09,521 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:44:36" (1/1) ... [2021-11-09 09:45:09,522 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:44:36" (1/1) ... [2021-11-09 09:45:10,654 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:44:36" (1/1) ... [2021-11-09 09:45:10,666 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:44:36" (1/1) ... [2021-11-09 09:45:13,300 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:44:36" (1/1) ... [2021-11-09 09:45:14,462 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:44:36" (1/1) ... [2021-11-09 09:45:14,856 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:44:36" (1/1) ... [2021-11-09 09:45:15,771 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 09:45:15,773 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 09:45:15,773 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 09:45:15,774 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 09:45:15,775 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:44:36" (1/1) ... [2021-11-09 09:45:15,786 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:45:15,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c9bdac7-c316-41ae-9b62-8373738043ab/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:45:15,822 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c9bdac7-c316-41ae-9b62-8373738043ab/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 09:45:15,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c9bdac7-c316-41ae-9b62-8373738043ab/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 09:45:15,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 09:45:15,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-09 09:45:15,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-09 09:45:15,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-09 09:45:15,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 09:45:15,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 09:45:15,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 09:54:04,747 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 09:54:04,747 INFO L299 CfgBuilder]: Removed 39222 assume(true) statements. [2021-11-09 09:54:04,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:54:04 BoogieIcfgContainer [2021-11-09 09:54:04,810 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 09:54:04,813 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 09:54:04,813 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 09:54:04,823 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 09:54:04,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 09:44:32" (1/3) ... [2021-11-09 09:54:04,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26dea2a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:54:04, skipping insertion in model container [2021-11-09 09:54:04,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:44:36" (2/3) ... [2021-11-09 09:54:04,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26dea2a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:54:04, skipping insertion in model container [2021-11-09 09:54:04,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:54:04" (3/3) ... [2021-11-09 09:54:04,832 INFO L111 eAbstractionObserver]: Analyzing ICFG rekcba_aso.1.M4-2.c [2021-11-09 09:54:04,854 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 09:54:04,854 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 108 error locations. [2021-11-09 09:54:05,126 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 09:54:05,136 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 [2021-11-09 09:54:05,136 INFO L340 AbstractCegarLoop]: Starting to check reachability of 108 error locations. [2021-11-09 09:54:06,238 INFO L276 IsEmpty]: Start isEmpty. Operand has 61828 states, 61719 states have (on average 1.5539299081320177) internal successors, (95907), 61827 states have internal predecessors, (95907), 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) [2021-11-09 09:54:06,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3694 [2021-11-09 09:54:06,847 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:54:06,851 INFO L513 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] [2021-11-09 09:54:06,852 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 105 more)] === [2021-11-09 09:54:06,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:54:06,862 INFO L85 PathProgramCache]: Analyzing trace with hash -2101138438, now seen corresponding path program 1 times [2021-11-09 09:54:06,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:54:06,873 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885766865] [2021-11-09 09:54:06,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:54:06,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:54:07,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:54:13,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:54:13,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:54:13,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885766865] [2021-11-09 09:54:13,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885766865] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:54:13,141 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:54:13,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-09 09:54:13,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304149244] [2021-11-09 09:54:13,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-09 09:54:13,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:54:13,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-09 09:54:13,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 09:54:13,235 INFO L87 Difference]: Start difference. First operand has 61828 states, 61719 states have (on average 1.5539299081320177) internal successors, (95907), 61827 states have internal predecessors, (95907), 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 2 states, 2 states have (on average 1846.5) internal successors, (3693), 2 states have internal predecessors, (3693), 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) [2021-11-09 09:54:15,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:54:15,021 INFO L93 Difference]: Finished difference Result 123652 states and 191809 transitions. [2021-11-09 09:54:15,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-09 09:54:15,023 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 1846.5) internal successors, (3693), 2 states have internal predecessors, (3693), 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 3693 [2021-11-09 09:54:15,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:54:15,308 INFO L225 Difference]: With dead ends: 123652 [2021-11-09 09:54:15,309 INFO L226 Difference]: Without dead ends: 61822 [2021-11-09 09:54:15,414 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 09:54:15,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61822 states. [2021-11-09 09:54:17,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61822 to 61822. [2021-11-09 09:54:17,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61822 states, 61714 states have (on average 1.3204297242116863) internal successors, (81489), 61821 states have internal predecessors, (81489), 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) [2021-11-09 09:54:17,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61822 states to 61822 states and 81489 transitions. [2021-11-09 09:54:17,730 INFO L78 Accepts]: Start accepts. Automaton has 61822 states and 81489 transitions. Word has length 3693 [2021-11-09 09:54:17,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:54:17,734 INFO L470 AbstractCegarLoop]: Abstraction has 61822 states and 81489 transitions. [2021-11-09 09:54:17,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 1846.5) internal successors, (3693), 2 states have internal predecessors, (3693), 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) [2021-11-09 09:54:17,736 INFO L276 IsEmpty]: Start isEmpty. Operand 61822 states and 81489 transitions. [2021-11-09 09:54:18,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3694 [2021-11-09 09:54:18,043 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:54:18,046 INFO L513 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] [2021-11-09 09:54:18,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 09:54:18,048 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 105 more)] === [2021-11-09 09:54:18,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:54:18,054 INFO L85 PathProgramCache]: Analyzing trace with hash 280169188, now seen corresponding path program 1 times [2021-11-09 09:54:18,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:54:18,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108882842] [2021-11-09 09:54:18,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:54:18,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms