./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-races/race-1_3-join.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60df62-2e81-4a3d-9d9e-3404483a4d47/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60df62-2e81-4a3d-9d9e-3404483a4d47/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60df62-2e81-4a3d-9d9e-3404483a4d47/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60df62-2e81-4a3d-9d9e-3404483a4d47/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-races/race-1_3-join.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60df62-2e81-4a3d-9d9e-3404483a4d47/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60df62-2e81-4a3d-9d9e-3404483a4d47/bin/uautomizer-j4sWxH34Be --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 8c7f2059024755e8d2127555397365a96bb56530f6a4795548fd916204307c42 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:41:32,587 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:41:32,590 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:41:32,624 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:41:32,625 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:41:32,626 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:41:32,628 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:41:32,630 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:41:32,633 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:41:32,634 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:41:32,635 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:41:32,637 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:41:32,637 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:41:32,639 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:41:32,641 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:41:32,642 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:41:32,643 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:41:32,644 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:41:32,646 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:41:32,649 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:41:32,650 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:41:32,652 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:41:32,653 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:41:32,654 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:41:32,658 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:41:32,659 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:41:32,663 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:41:32,664 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:41:32,665 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:41:32,666 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:41:32,666 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:41:32,667 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:41:32,668 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:41:32,669 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:41:32,670 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:41:32,671 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:41:32,671 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:41:32,672 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:41:32,672 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:41:32,673 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:41:32,674 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:41:32,677 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60df62-2e81-4a3d-9d9e-3404483a4d47/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 19:41:32,732 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:41:32,732 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:41:32,733 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:41:32,733 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:41:32,735 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:41:32,735 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:41:32,735 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:41:32,736 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:41:32,736 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:41:32,736 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:41:32,737 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:41:32,738 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:41:32,738 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 19:41:32,738 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:41:32,738 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 19:41:32,738 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:41:32,739 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:41:32,739 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:41:32,739 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 19:41:32,739 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:41:32,739 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:41:32,740 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:41:32,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:41:32,740 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:41:32,740 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:41:32,740 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 19:41:32,741 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:41:32,741 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 19:41:32,741 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 19:41:32,741 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 19:41:32,741 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 19:41:32,742 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:41:32,742 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_0c60df62-2e81-4a3d-9d9e-3404483a4d47/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60df62-2e81-4a3d-9d9e-3404483a4d47/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c7f2059024755e8d2127555397365a96bb56530f6a4795548fd916204307c42 [2021-10-21 19:41:32,979 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:41:33,002 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:41:33,005 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:41:33,006 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:41:33,007 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:41:33,008 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60df62-2e81-4a3d-9d9e-3404483a4d47/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/ldv-races/race-1_3-join.i [2021-10-21 19:41:33,076 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60df62-2e81-4a3d-9d9e-3404483a4d47/bin/uautomizer-j4sWxH34Be/data/1a32aa74e/fa32ed2d2f694ee89acf3b564a2ceaa6/FLAG850b14212 [2021-10-21 19:41:33,756 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:41:33,756 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60df62-2e81-4a3d-9d9e-3404483a4d47/sv-benchmarks/c/ldv-races/race-1_3-join.i [2021-10-21 19:41:33,789 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60df62-2e81-4a3d-9d9e-3404483a4d47/bin/uautomizer-j4sWxH34Be/data/1a32aa74e/fa32ed2d2f694ee89acf3b564a2ceaa6/FLAG850b14212 [2021-10-21 19:41:33,978 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60df62-2e81-4a3d-9d9e-3404483a4d47/bin/uautomizer-j4sWxH34Be/data/1a32aa74e/fa32ed2d2f694ee89acf3b564a2ceaa6 [2021-10-21 19:41:33,980 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:41:33,982 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:41:33,983 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:41:33,983 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:41:33,987 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:41:33,988 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:41:33" (1/1) ... [2021-10-21 19:41:33,989 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@543e3db0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:41:33, skipping insertion in model container [2021-10-21 19:41:33,989 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:41:33" (1/1) ... [2021-10-21 19:41:33,996 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:41:34,049 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:41:34,802 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_0c60df62-2e81-4a3d-9d9e-3404483a4d47/sv-benchmarks/c/ldv-races/race-1_3-join.i[76153,76166] [2021-10-21 19:41:34,837 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:41:34,850 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:41:34,914 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_0c60df62-2e81-4a3d-9d9e-3404483a4d47/sv-benchmarks/c/ldv-races/race-1_3-join.i[76153,76166] [2021-10-21 19:41:34,921 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:41:35,079 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:41:35,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:41:35 WrapperNode [2021-10-21 19:41:35,080 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:41:35,081 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:41:35,081 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:41:35,082 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:41:35,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:41:35" (1/1) ... [2021-10-21 19:41:35,123 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:41:35" (1/1) ... [2021-10-21 19:41:35,155 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:41:35,156 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:41:35,156 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:41:35,156 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:41:35,164 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:41:35" (1/1) ... [2021-10-21 19:41:35,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:41:35" (1/1) ... [2021-10-21 19:41:35,171 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:41:35" (1/1) ... [2021-10-21 19:41:35,172 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:41:35" (1/1) ... [2021-10-21 19:41:35,189 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:41:35" (1/1) ... [2021-10-21 19:41:35,191 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:41:35" (1/1) ... [2021-10-21 19:41:35,197 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:41:35" (1/1) ... [2021-10-21 19:41:35,205 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:41:35,206 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:41:35,206 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:41:35,207 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:41:35,208 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:41:35" (1/1) ... [2021-10-21 19:41:35,223 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:41:35,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60df62-2e81-4a3d-9d9e-3404483a4d47/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:41:35,265 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60df62-2e81-4a3d-9d9e-3404483a4d47/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:41:35,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60df62-2e81-4a3d-9d9e-3404483a4d47/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:41:35,329 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-21 19:41:35,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 19:41:35,329 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-21 19:41:35,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-21 19:41:35,329 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-10-21 19:41:35,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-21 19:41:35,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:41:35,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:41:35,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:41:35,330 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-21 19:41:35,330 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-21 19:41:35,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-21 19:41:35,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:41:35,333 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-21 19:41:35,895 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:41:35,896 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-21 19:41:35,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:41:35 BoogieIcfgContainer [2021-10-21 19:41:35,898 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:41:35,904 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:41:35,904 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:41:35,908 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:41:35,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:41:33" (1/3) ... [2021-10-21 19:41:35,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25ad3e39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:41:35, skipping insertion in model container [2021-10-21 19:41:35,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:41:35" (2/3) ... [2021-10-21 19:41:35,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25ad3e39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:41:35, skipping insertion in model container [2021-10-21 19:41:35,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:41:35" (3/3) ... [2021-10-21 19:41:35,911 INFO L111 eAbstractionObserver]: Analyzing ICFG race-1_3-join.i [2021-10-21 19:41:35,920 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-21 19:41:35,921 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:41:35,921 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-10-21 19:41:35,921 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-21 19:41:35,945 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:41:35,945 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:41:35,945 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:41:35,945 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:41:35,946 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:41:35,946 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:41:35,946 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:41:35,946 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:41:35,947 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:41:35,947 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:41:35,947 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:41:35,947 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:41:35,948 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:41:35,948 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:41:35,948 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:41:35,948 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:41:35,952 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:41:35,952 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:41:35,952 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:41:35,952 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:41:35,952 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:41:35,958 INFO L148 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-10-21 19:41:36,008 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:41:36,014 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 [2021-10-21 19:41:36,015 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-10-21 19:41:36,028 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 89 places, 90 transitions, 188 flow [2021-10-21 19:41:36,071 INFO L129 PetriNetUnfolder]: 4/104 cut-off events. [2021-10-21 19:41:36,072 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-10-21 19:41:36,074 INFO L84 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 104 events. 4/104 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 152 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 63. Up to 3 conditions per place. [2021-10-21 19:41:36,075 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 90 transitions, 188 flow [2021-10-21 19:41:36,080 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 79 transitions, 164 flow [2021-10-21 19:41:36,088 INFO L129 PetriNetUnfolder]: 0/28 cut-off events. [2021-10-21 19:41:36,088 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-21 19:41:36,088 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:41:36,089 INFO L254 CegarLoopForPetriNet]: 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] [2021-10-21 19:41:36,089 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 19:41:36,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:41:36,095 INFO L82 PathProgramCache]: Analyzing trace with hash -877078411, now seen corresponding path program 1 times [2021-10-21 19:41:36,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:41:36,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595045580] [2021-10-21 19:41:36,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:41:36,105 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:41:36,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:41:36,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:41:36,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:41:36,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595045580] [2021-10-21 19:41:36,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595045580] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:41:36,643 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:41:36,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 19:41:36,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543029034] [2021-10-21 19:41:36,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:41:36,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:41:36,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:41:36,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:41:36,680 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 90 [2021-10-21 19:41:36,686 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 79 transitions, 164 flow. Second operand has 5 states, 5 states have (on average 62.2) internal successors, (311), 5 states have internal predecessors, (311), 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) [2021-10-21 19:41:36,686 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:41:36,686 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 90 [2021-10-21 19:41:36,688 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:41:36,832 INFO L129 PetriNetUnfolder]: 3/90 cut-off events. [2021-10-21 19:41:36,833 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-10-21 19:41:36,833 INFO L84 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 90 events. 3/90 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 105 event pairs, 0 based on Foata normal form. 1/86 useless extension candidates. Maximal degree in co-relation 37. Up to 12 conditions per place. [2021-10-21 19:41:36,835 INFO L132 encePairwiseOnDemand]: 75/90 looper letters, 13 selfloop transitions, 13 changer transitions 1/79 dead transitions. [2021-10-21 19:41:36,835 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 79 transitions, 218 flow [2021-10-21 19:41:36,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:41:36,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-21 19:41:36,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 456 transitions. [2021-10-21 19:41:36,852 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7238095238095238 [2021-10-21 19:41:36,853 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 456 transitions. [2021-10-21 19:41:36,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 456 transitions. [2021-10-21 19:41:36,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:41:36,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 456 transitions. [2021-10-21 19:41:36,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 65.14285714285714) internal successors, (456), 7 states have internal predecessors, (456), 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) [2021-10-21 19:41:36,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 90.0) internal successors, (720), 8 states have internal predecessors, (720), 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) [2021-10-21 19:41:36,876 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 90.0) internal successors, (720), 8 states have internal predecessors, (720), 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) [2021-10-21 19:41:36,878 INFO L186 Difference]: Start difference. First operand has 80 places, 79 transitions, 164 flow. Second operand 7 states and 456 transitions. [2021-10-21 19:41:36,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 79 transitions, 218 flow [2021-10-21 19:41:36,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 79 transitions, 214 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-21 19:41:36,892 INFO L242 Difference]: Finished difference. Result has 82 places, 76 transitions, 196 flow [2021-10-21 19:41:36,895 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=196, PETRI_PLACES=82, PETRI_TRANSITIONS=76} [2021-10-21 19:41:36,896 INFO L334 CegarLoopForPetriNet]: 80 programPoint places, 2 predicate places. [2021-10-21 19:41:36,896 INFO L470 AbstractCegarLoop]: Abstraction has has 82 places, 76 transitions, 196 flow [2021-10-21 19:41:36,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.2) internal successors, (311), 5 states have internal predecessors, (311), 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) [2021-10-21 19:41:36,897 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:41:36,897 INFO L254 CegarLoopForPetriNet]: 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] [2021-10-21 19:41:36,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 19:41:36,897 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 19:41:36,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:41:36,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1953959461, now seen corresponding path program 1 times [2021-10-21 19:41:36,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:41:36,899 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410790420] [2021-10-21 19:41:36,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:41:36,899 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:41:36,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:41:37,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:41:37,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:41:37,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410790420] [2021-10-21 19:41:37,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410790420] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:41:37,100 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:41:37,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 19:41:37,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797050897] [2021-10-21 19:41:37,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:41:37,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:41:37,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:41:37,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:41:37,107 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 90 [2021-10-21 19:41:37,110 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 76 transitions, 196 flow. Second operand has 5 states, 5 states have (on average 63.2) internal successors, (316), 5 states have internal predecessors, (316), 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) [2021-10-21 19:41:37,110 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:41:37,111 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 90 [2021-10-21 19:41:37,111 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:41:37,235 INFO L129 PetriNetUnfolder]: 3/86 cut-off events. [2021-10-21 19:41:37,235 INFO L130 PetriNetUnfolder]: For 11/13 co-relation queries the response was YES. [2021-10-21 19:41:37,237 INFO L84 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 86 events. 3/86 cut-off events. For 11/13 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 82 event pairs, 0 based on Foata normal form. 1/86 useless extension candidates. Maximal degree in co-relation 87. Up to 13 conditions per place. [2021-10-21 19:41:37,240 INFO L132 encePairwiseOnDemand]: 79/90 looper letters, 15 selfloop transitions, 11 changer transitions 0/77 dead transitions. [2021-10-21 19:41:37,240 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 77 transitions, 256 flow [2021-10-21 19:41:37,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:41:37,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-21 19:41:37,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 452 transitions. [2021-10-21 19:41:37,248 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7174603174603175 [2021-10-21 19:41:37,248 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 452 transitions. [2021-10-21 19:41:37,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 452 transitions. [2021-10-21 19:41:37,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:41:37,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 452 transitions. [2021-10-21 19:41:37,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 64.57142857142857) internal successors, (452), 7 states have internal predecessors, (452), 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) [2021-10-21 19:41:37,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 90.0) internal successors, (720), 8 states have internal predecessors, (720), 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) [2021-10-21 19:41:37,258 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 90.0) internal successors, (720), 8 states have internal predecessors, (720), 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) [2021-10-21 19:41:37,258 INFO L186 Difference]: Start difference. First operand has 82 places, 76 transitions, 196 flow. Second operand 7 states and 452 transitions. [2021-10-21 19:41:37,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 77 transitions, 256 flow [2021-10-21 19:41:37,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 77 transitions, 246 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-10-21 19:41:37,263 INFO L242 Difference]: Finished difference. Result has 84 places, 75 transitions, 214 flow [2021-10-21 19:41:37,263 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=214, PETRI_PLACES=84, PETRI_TRANSITIONS=75} [2021-10-21 19:41:37,272 INFO L334 CegarLoopForPetriNet]: 80 programPoint places, 4 predicate places. [2021-10-21 19:41:37,272 INFO L470 AbstractCegarLoop]: Abstraction has has 84 places, 75 transitions, 214 flow [2021-10-21 19:41:37,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 63.2) internal successors, (316), 5 states have internal predecessors, (316), 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) [2021-10-21 19:41:37,273 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:41:37,273 INFO L254 CegarLoopForPetriNet]: 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] [2021-10-21 19:41:37,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 19:41:37,273 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 19:41:37,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:41:37,274 INFO L82 PathProgramCache]: Analyzing trace with hash -931715026, now seen corresponding path program 1 times [2021-10-21 19:41:37,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:41:37,274 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798345692] [2021-10-21 19:41:37,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:41:37,275 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:41:37,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:41:37,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:41:37,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:41:37,405 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798345692] [2021-10-21 19:41:37,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798345692] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:41:37,405 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:41:37,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:41:37,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457210985] [2021-10-21 19:41:37,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:41:37,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:41:37,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:41:37,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:41:37,408 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 90 [2021-10-21 19:41:37,409 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 75 transitions, 214 flow. Second operand has 4 states, 4 states have (on average 75.75) internal successors, (303), 4 states have internal predecessors, (303), 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) [2021-10-21 19:41:37,409 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:41:37,409 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 90 [2021-10-21 19:41:37,409 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:41:37,442 INFO L129 PetriNetUnfolder]: 1/78 cut-off events. [2021-10-21 19:41:37,442 INFO L130 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2021-10-21 19:41:37,443 INFO L84 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 78 events. 1/78 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 50 event pairs, 0 based on Foata normal form. 1/78 useless extension candidates. Maximal degree in co-relation 79. Up to 8 conditions per place. [2021-10-21 19:41:37,443 INFO L132 encePairwiseOnDemand]: 87/90 looper letters, 7 selfloop transitions, 0 changer transitions 10/75 dead transitions. [2021-10-21 19:41:37,443 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 75 transitions, 225 flow [2021-10-21 19:41:37,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:41:37,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-21 19:41:37,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 307 transitions. [2021-10-21 19:41:37,447 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8527777777777777 [2021-10-21 19:41:37,448 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 307 transitions. [2021-10-21 19:41:37,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 307 transitions. [2021-10-21 19:41:37,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:41:37,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 307 transitions. [2021-10-21 19:41:37,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 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) [2021-10-21 19:41:37,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 90.0) internal successors, (450), 5 states have internal predecessors, (450), 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) [2021-10-21 19:41:37,452 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 90.0) internal successors, (450), 5 states have internal predecessors, (450), 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) [2021-10-21 19:41:37,453 INFO L186 Difference]: Start difference. First operand has 84 places, 75 transitions, 214 flow. Second operand 4 states and 307 transitions. [2021-10-21 19:41:37,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 75 transitions, 225 flow [2021-10-21 19:41:37,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 75 transitions, 184 flow, removed 2 selfloop flow, removed 10 redundant places. [2021-10-21 19:41:37,457 INFO L242 Difference]: Finished difference. Result has 79 places, 65 transitions, 146 flow [2021-10-21 19:41:37,457 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=146, PETRI_PLACES=79, PETRI_TRANSITIONS=65} [2021-10-21 19:41:37,458 INFO L334 CegarLoopForPetriNet]: 80 programPoint places, -1 predicate places. [2021-10-21 19:41:37,458 INFO L470 AbstractCegarLoop]: Abstraction has has 79 places, 65 transitions, 146 flow [2021-10-21 19:41:37,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.75) internal successors, (303), 4 states have internal predecessors, (303), 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) [2021-10-21 19:41:37,458 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:41:37,459 INFO L254 CegarLoopForPetriNet]: 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] [2021-10-21 19:41:37,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-21 19:41:37,459 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 19:41:37,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:41:37,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1488108840, now seen corresponding path program 1 times [2021-10-21 19:41:37,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:41:37,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770635777] [2021-10-21 19:41:37,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:41:37,461 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:41:37,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:41:37,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:41:37,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:41:37,572 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770635777] [2021-10-21 19:41:37,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770635777] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:41:37,572 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:41:37,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 19:41:37,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29909182] [2021-10-21 19:41:37,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:41:37,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:41:37,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:41:37,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:41:37,581 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 90 [2021-10-21 19:41:37,581 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 65 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 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) [2021-10-21 19:41:37,581 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:41:37,582 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 90 [2021-10-21 19:41:37,582 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:41:37,628 INFO L129 PetriNetUnfolder]: 2/80 cut-off events. [2021-10-21 19:41:37,628 INFO L130 PetriNetUnfolder]: For 4/6 co-relation queries the response was YES. [2021-10-21 19:41:37,629 INFO L84 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 80 events. 2/80 cut-off events. For 4/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 56 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 104. Up to 11 conditions per place. [2021-10-21 19:41:37,630 INFO L132 encePairwiseOnDemand]: 85/90 looper letters, 8 selfloop transitions, 5 changer transitions 0/67 dead transitions. [2021-10-21 19:41:37,632 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 67 transitions, 176 flow [2021-10-21 19:41:37,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:41:37,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-21 19:41:37,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 232 transitions. [2021-10-21 19:41:37,634 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8592592592592593 [2021-10-21 19:41:37,635 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 232 transitions. [2021-10-21 19:41:37,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 232 transitions. [2021-10-21 19:41:37,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:41:37,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 232 transitions. [2021-10-21 19:41:37,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 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) [2021-10-21 19:41:37,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 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) [2021-10-21 19:41:37,638 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 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) [2021-10-21 19:41:37,638 INFO L186 Difference]: Start difference. First operand has 79 places, 65 transitions, 146 flow. Second operand 3 states and 232 transitions. [2021-10-21 19:41:37,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 67 transitions, 176 flow [2021-10-21 19:41:37,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 67 transitions, 172 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-10-21 19:41:37,641 INFO L242 Difference]: Finished difference. Result has 72 places, 67 transitions, 172 flow [2021-10-21 19:41:37,641 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=172, PETRI_PLACES=72, PETRI_TRANSITIONS=67} [2021-10-21 19:41:37,641 INFO L334 CegarLoopForPetriNet]: 80 programPoint places, -8 predicate places. [2021-10-21 19:41:37,642 INFO L470 AbstractCegarLoop]: Abstraction has has 72 places, 67 transitions, 172 flow [2021-10-21 19:41:37,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 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) [2021-10-21 19:41:37,642 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:41:37,642 INFO L254 CegarLoopForPetriNet]: 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] [2021-10-21 19:41:37,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-21 19:41:37,643 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 19:41:37,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:41:37,643 INFO L82 PathProgramCache]: Analyzing trace with hash 456497190, now seen corresponding path program 1 times [2021-10-21 19:41:37,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:41:37,644 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429701835] [2021-10-21 19:41:37,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:41:37,644 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:41:37,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:41:37,686 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:41:37,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:41:37,785 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:41:37,785 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-21 19:41:37,787 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:41:37,789 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:41:37,789 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:41:37,790 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:41:37,790 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-21 19:41:37,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-21 19:41:37,803 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-21 19:41:37,803 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:41:37,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:41:37 BasicIcfg [2021-10-21 19:41:37,889 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:41:37,889 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:41:37,889 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:41:37,890 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:41:37,890 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:41:35" (3/4) ... [2021-10-21 19:41:37,892 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-21 19:41:37,969 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60df62-2e81-4a3d-9d9e-3404483a4d47/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 19:41:37,969 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:41:37,971 INFO L168 Benchmark]: Toolchain (without parser) took 3988.30 ms. Allocated memory was 115.3 MB in the beginning and 153.1 MB in the end (delta: 37.7 MB). Free memory was 82.9 MB in the beginning and 80.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 38.9 MB. Max. memory is 16.1 GB. [2021-10-21 19:41:37,972 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 115.3 MB. Free memory is still 70.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:41:37,972 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1097.21 ms. Allocated memory was 115.3 MB in the beginning and 153.1 MB in the end (delta: 37.7 MB). Free memory was 82.6 MB in the beginning and 115.1 MB in the end (delta: -32.4 MB). Peak memory consumption was 37.5 MB. Max. memory is 16.1 GB. [2021-10-21 19:41:37,973 INFO L168 Benchmark]: Boogie Procedure Inliner took 73.79 ms. Allocated memory is still 153.1 MB. Free memory was 115.1 MB in the beginning and 111.8 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:41:37,973 INFO L168 Benchmark]: Boogie Preprocessor took 49.43 ms. Allocated memory is still 153.1 MB. Free memory was 111.8 MB in the beginning and 109.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:41:37,974 INFO L168 Benchmark]: RCFGBuilder took 692.31 ms. Allocated memory is still 153.1 MB. Free memory was 109.7 MB in the beginning and 92.0 MB in the end (delta: 17.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-21 19:41:37,974 INFO L168 Benchmark]: TraceAbstraction took 1985.06 ms. Allocated memory is still 153.1 MB. Free memory was 92.0 MB in the beginning and 86.2 MB in the end (delta: 5.8 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. [2021-10-21 19:41:37,975 INFO L168 Benchmark]: Witness Printer took 79.74 ms. Allocated memory is still 153.1 MB. Free memory was 86.2 MB in the beginning and 80.9 MB in the end (delta: 5.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-21 19:41:37,978 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 115.3 MB. Free memory is still 70.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1097.21 ms. Allocated memory was 115.3 MB in the beginning and 153.1 MB in the end (delta: 37.7 MB). Free memory was 82.6 MB in the beginning and 115.1 MB in the end (delta: -32.4 MB). Peak memory consumption was 37.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 73.79 ms. Allocated memory is still 153.1 MB. Free memory was 115.1 MB in the beginning and 111.8 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 49.43 ms. Allocated memory is still 153.1 MB. Free memory was 111.8 MB in the beginning and 109.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 692.31 ms. Allocated memory is still 153.1 MB. Free memory was 109.7 MB in the beginning and 92.0 MB in the end (delta: 17.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1985.06 ms. Allocated memory is still 153.1 MB. Free memory was 92.0 MB in the beginning and 86.2 MB in the end (delta: 5.8 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. * Witness Printer took 79.74 ms. Allocated memory is still 153.1 MB. Free memory was 86.2 MB in the beginning and 80.9 MB in the end (delta: 5.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 1695]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1696] 0 pthread_t t1; VAL [t1={7:0}] [L1697] 0 pthread_mutex_t mutex; VAL [mutex={9:0}, t1={7:0}] [L1698] 0 int pdev; VAL [mutex={9:0}, pdev=0, t1={7:0}] [L1709] 0 pdev = 1 VAL [mutex={9:0}, pdev=1, t1={7:0}] [L1695] COND FALSE 0 !(!expression) VAL [mutex={9:0}, pdev=1, t1={7:0}] [L1711] COND TRUE 0 __VERIFIER_nondet_int() VAL [mutex={9:0}, pdev=1, t1={7:0}] [L1712] FCALL, FORK 0 pthread_create(&t1, ((void *)0), thread1, ((void *)0)) VAL [arg={0:0}, mutex={9:0}, pdev=1, t1={7:0}] [L1713] 0 return 0; VAL [arg={0:0}, mutex={9:0}, pdev=1, t1={7:0}] [L1734] COND FALSE 0 !(module_init()!=0) VAL [arg={0:0}, mutex={9:0}, pdev=1, t1={7:0}] [L1721] 0 void *status; VAL [arg={0:0}, mutex={9:0}, pdev=1, t1={7:0}] [L1723] 0 pdev = 4 VAL [arg={0:0}, mutex={9:0}, pdev=4, t1={7:0}] [L1702] 1 pdev = 6 VAL [arg={0:0}, arg={0:0}, mutex={9:0}, pdev=6, t1={7:0}] [L1695] COND TRUE 0 !expression [L1695] 0 reach_error() VAL [arg={0:0}, arg={0:0}, mutex={9:0}, pdev=6, t1={7:0}] - UnprovableResult [Line: 1695]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1695]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1695]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1712]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 95 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 7.8ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1791.9ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 508.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 65.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 55 SDtfs, 39 SDslu, 45 SDs, 0 SdLazy, 76 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 91.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 106.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=214occurred in iteration=2, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 27.5ms SsaConstructionTime, 139.1ms SatisfiabilityAnalysisTime, 545.9ms InterpolantComputationTime, 197 NumberOfCodeBlocks, 197 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 145 ConstructedInterpolants, 0 QuantifiedInterpolants, 181 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-21 19:41:38,017 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60df62-2e81-4a3d-9d9e-3404483a4d47/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...