./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-ext/26_stack_cas_longest-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9e34d7-3f3d-488a-aa94-5ad1d9b1a307/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9e34d7-3f3d-488a-aa94-5ad1d9b1a307/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9e34d7-3f3d-488a-aa94-5ad1d9b1a307/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9e34d7-3f3d-488a-aa94-5ad1d9b1a307/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/26_stack_cas_longest-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9e34d7-3f3d-488a-aa94-5ad1d9b1a307/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9e34d7-3f3d-488a-aa94-5ad1d9b1a307/bin/uautomizer-tPACEb0tL8 --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 8c0827ac193c1e2b03d5ccf1e60b62c7d6ff1b4feade2c409a6c7ca2cebf9412 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:40:05,839 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:40:05,841 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:40:05,862 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:40:05,863 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:40:05,864 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:40:05,865 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:40:05,867 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:40:05,869 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:40:05,870 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:40:05,871 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:40:05,873 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:40:05,873 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:40:05,874 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:40:05,875 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:40:05,877 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:40:05,878 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:40:05,879 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:40:05,881 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:40:05,883 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:40:05,885 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:40:05,887 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:40:05,888 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:40:05,889 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:40:05,894 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:40:05,894 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:40:05,895 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:40:05,896 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:40:05,904 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:40:05,906 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:40:05,906 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:40:05,907 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:40:05,908 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:40:05,909 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:40:05,910 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:40:05,910 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:40:05,911 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:40:05,911 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:40:05,911 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:40:05,912 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:40:05,913 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:40:05,917 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9e34d7-3f3d-488a-aa94-5ad1d9b1a307/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:40:05,962 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:40:05,963 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:40:05,963 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:40:05,963 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:40:05,964 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:40:05,964 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:40:05,965 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:40:05,965 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:40:05,966 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:40:05,966 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:40:05,966 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:40:05,966 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:40:05,967 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:40:05,967 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:40:05,967 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:40:05,967 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:40:05,967 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:40:05,968 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:40:05,968 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:40:05,968 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:40:05,968 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:40:05,969 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:40:05,969 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:40:05,969 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:40:05,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:40:05,969 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:40:05,970 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:40:05,970 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:40:05,970 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:40:05,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:40:05,971 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:40:05,978 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:40:05,978 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:40:05,979 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_3a9e34d7-3f3d-488a-aa94-5ad1d9b1a307/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9e34d7-3f3d-488a-aa94-5ad1d9b1a307/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c0827ac193c1e2b03d5ccf1e60b62c7d6ff1b4feade2c409a6c7ca2cebf9412 [2022-11-16 12:40:06,278 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:40:06,309 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:40:06,312 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:40:06,313 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:40:06,319 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:40:06,321 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9e34d7-3f3d-488a-aa94-5ad1d9b1a307/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/pthread-ext/26_stack_cas_longest-1.i [2022-11-16 12:40:06,407 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9e34d7-3f3d-488a-aa94-5ad1d9b1a307/bin/uautomizer-tPACEb0tL8/data/c731b63fa/cb3f8a0060ce41b38600850f67a2c00f/FLAG8774bb10d [2022-11-16 12:40:07,104 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:40:07,105 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9e34d7-3f3d-488a-aa94-5ad1d9b1a307/sv-benchmarks/c/pthread-ext/26_stack_cas_longest-1.i [2022-11-16 12:40:07,125 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9e34d7-3f3d-488a-aa94-5ad1d9b1a307/bin/uautomizer-tPACEb0tL8/data/c731b63fa/cb3f8a0060ce41b38600850f67a2c00f/FLAG8774bb10d [2022-11-16 12:40:07,397 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9e34d7-3f3d-488a-aa94-5ad1d9b1a307/bin/uautomizer-tPACEb0tL8/data/c731b63fa/cb3f8a0060ce41b38600850f67a2c00f [2022-11-16 12:40:07,400 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:40:07,401 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:40:07,403 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:40:07,404 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:40:07,408 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:40:07,409 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:40:07" (1/1) ... [2022-11-16 12:40:07,410 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11ad5162 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:40:07, skipping insertion in model container [2022-11-16 12:40:07,411 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:40:07" (1/1) ... [2022-11-16 12:40:07,420 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:40:07,459 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:40:07,987 WARN L229 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_3a9e34d7-3f3d-488a-aa94-5ad1d9b1a307/sv-benchmarks/c/pthread-ext/26_stack_cas_longest-1.i[31167,31180] [2022-11-16 12:40:08,007 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:40:08,025 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:40:08,090 WARN L229 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_3a9e34d7-3f3d-488a-aa94-5ad1d9b1a307/sv-benchmarks/c/pthread-ext/26_stack_cas_longest-1.i[31167,31180] [2022-11-16 12:40:08,107 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:40:08,158 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:40:08,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:40:08 WrapperNode [2022-11-16 12:40:08,158 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:40:08,159 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:40:08,160 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:40:08,160 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:40:08,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:40:08" (1/1) ... [2022-11-16 12:40:08,201 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:40:08" (1/1) ... [2022-11-16 12:40:08,254 INFO L138 Inliner]: procedures = 177, calls = 47, calls flagged for inlining = 16, calls inlined = 19, statements flattened = 187 [2022-11-16 12:40:08,255 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:40:08,256 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:40:08,256 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:40:08,257 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:40:08,268 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:40:08" (1/1) ... [2022-11-16 12:40:08,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:40:08" (1/1) ... [2022-11-16 12:40:08,289 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:40:08" (1/1) ... [2022-11-16 12:40:08,289 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:40:08" (1/1) ... [2022-11-16 12:40:08,296 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:40:08" (1/1) ... [2022-11-16 12:40:08,302 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:40:08" (1/1) ... [2022-11-16 12:40:08,320 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:40:08" (1/1) ... [2022-11-16 12:40:08,322 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:40:08" (1/1) ... [2022-11-16 12:40:08,325 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:40:08,326 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:40:08,326 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:40:08,326 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:40:08,342 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:40:08" (1/1) ... [2022-11-16 12:40:08,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:40:08,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9e34d7-3f3d-488a-aa94-5ad1d9b1a307/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:40:08,390 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9e34d7-3f3d-488a-aa94-5ad1d9b1a307/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:40:08,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9e34d7-3f3d-488a-aa94-5ad1d9b1a307/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:40:08,453 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:40:08,453 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-16 12:40:08,453 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-16 12:40:08,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:40:08,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:40:08,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:40:08,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:40:08,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:40:08,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:40:08,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:40:08,457 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:40:08,668 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:40:08,670 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:40:09,133 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:40:09,489 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:40:09,490 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-16 12:40:09,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:40:09 BoogieIcfgContainer [2022-11-16 12:40:09,493 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:40:09,496 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:40:09,496 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:40:09,503 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:40:09,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:40:07" (1/3) ... [2022-11-16 12:40:09,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19ff185c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:40:09, skipping insertion in model container [2022-11-16 12:40:09,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:40:08" (2/3) ... [2022-11-16 12:40:09,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19ff185c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:40:09, skipping insertion in model container [2022-11-16 12:40:09,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:40:09" (3/3) ... [2022-11-16 12:40:09,508 INFO L112 eAbstractionObserver]: Analyzing ICFG 26_stack_cas_longest-1.i [2022-11-16 12:40:09,519 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:40:09,532 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:40:09,533 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 12:40:09,533 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:40:09,669 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 12:40:09,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 124 transitions, 253 flow [2022-11-16 12:40:09,814 INFO L130 PetriNetUnfolder]: 11/135 cut-off events. [2022-11-16 12:40:09,814 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:40:09,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 135 events. 11/135 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 141 event pairs, 0 based on Foata normal form. 0/121 useless extension candidates. Maximal degree in co-relation 97. Up to 4 conditions per place. [2022-11-16 12:40:09,823 INFO L82 GeneralOperation]: Start removeDead. Operand has 117 places, 124 transitions, 253 flow [2022-11-16 12:40:09,829 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 124 transitions, 253 flow [2022-11-16 12:40:09,841 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:40:09,849 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@10b81f85, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:40:09,850 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-16 12:40:09,870 INFO L130 PetriNetUnfolder]: 3/63 cut-off events. [2022-11-16 12:40:09,870 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:40:09,870 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:40:09,871 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:40:09,872 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:40:09,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:40:09,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1070285974, now seen corresponding path program 1 times [2022-11-16 12:40:09,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:40:09,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509363957] [2022-11-16 12:40:09,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:40:09,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:40:10,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:40:10,087 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:40:10,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:40:10,175 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:40:10,178 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 12:40:10,183 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2022-11-16 12:40:10,188 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2022-11-16 12:40:10,189 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2022-11-16 12:40:10,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:40:10,190 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-16 12:40:10,208 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 12:40:10,209 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-16 12:40:10,381 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 12:40:10,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 195 places, 209 transitions, 430 flow [2022-11-16 12:40:10,546 INFO L130 PetriNetUnfolder]: 21/233 cut-off events. [2022-11-16 12:40:10,550 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 12:40:10,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 243 conditions, 233 events. 21/233 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 465 event pairs, 0 based on Foata normal form. 0/207 useless extension candidates. Maximal degree in co-relation 181. Up to 6 conditions per place. [2022-11-16 12:40:10,555 INFO L82 GeneralOperation]: Start removeDead. Operand has 195 places, 209 transitions, 430 flow [2022-11-16 12:40:10,570 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 195 places, 209 transitions, 430 flow [2022-11-16 12:40:10,573 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:40:10,575 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@10b81f85, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:40:10,575 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-16 12:40:10,599 INFO L130 PetriNetUnfolder]: 7/103 cut-off events. [2022-11-16 12:40:10,600 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 12:40:10,600 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:40:10,600 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:40:10,601 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-16 12:40:10,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:40:10,602 INFO L85 PathProgramCache]: Analyzing trace with hash -66623736, now seen corresponding path program 1 times [2022-11-16 12:40:10,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:40:10,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991094104] [2022-11-16 12:40:10,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:40:10,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:40:10,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:40:10,662 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:40:10,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:40:10,731 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:40:10,731 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 12:40:10,732 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2022-11-16 12:40:10,732 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2022-11-16 12:40:10,732 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2022-11-16 12:40:10,733 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2022-11-16 12:40:10,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:40:10,733 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-16 12:40:10,734 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 12:40:10,734 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-16 12:40:10,880 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 12:40:10,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 273 places, 294 transitions, 609 flow [2022-11-16 12:40:11,033 INFO L130 PetriNetUnfolder]: 31/331 cut-off events. [2022-11-16 12:40:11,034 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-16 12:40:11,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 347 conditions, 331 events. 31/331 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 913 event pairs, 0 based on Foata normal form. 0/293 useless extension candidates. Maximal degree in co-relation 265. Up to 8 conditions per place. [2022-11-16 12:40:11,047 INFO L82 GeneralOperation]: Start removeDead. Operand has 273 places, 294 transitions, 609 flow [2022-11-16 12:40:11,053 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 273 places, 294 transitions, 609 flow [2022-11-16 12:40:11,056 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:40:11,063 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@10b81f85, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:40:11,063 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-16 12:40:11,104 INFO L130 PetriNetUnfolder]: 11/150 cut-off events. [2022-11-16 12:40:11,104 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-16 12:40:11,105 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:40:11,105 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:40:11,107 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-16 12:40:11,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:40:11,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1080982476, now seen corresponding path program 1 times [2022-11-16 12:40:11,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:40:11,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367234804] [2022-11-16 12:40:11,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:40:11,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:40:11,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:40:11,185 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:40:11,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:40:11,221 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:40:11,221 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 12:40:11,222 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-11-16 12:40:11,222 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-11-16 12:40:11,223 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2022-11-16 12:40:11,223 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2022-11-16 12:40:11,223 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2022-11-16 12:40:11,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:40:11,224 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-16 12:40:11,225 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 12:40:11,225 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-16 12:40:11,349 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 12:40:11,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 351 places, 379 transitions, 790 flow [2022-11-16 12:40:11,521 INFO L130 PetriNetUnfolder]: 41/429 cut-off events. [2022-11-16 12:40:11,522 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-11-16 12:40:11,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 452 conditions, 429 events. 41/429 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1423 event pairs, 0 based on Foata normal form. 0/379 useless extension candidates. Maximal degree in co-relation 349. Up to 10 conditions per place. [2022-11-16 12:40:11,533 INFO L82 GeneralOperation]: Start removeDead. Operand has 351 places, 379 transitions, 790 flow [2022-11-16 12:40:11,540 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 351 places, 379 transitions, 790 flow [2022-11-16 12:40:11,542 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:40:11,549 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@10b81f85, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:40:11,549 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-16 12:40:11,591 INFO L130 PetriNetUnfolder]: 15/204 cut-off events. [2022-11-16 12:40:11,591 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-11-16 12:40:11,591 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:40:11,592 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:40:11,592 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-16 12:40:11,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:40:11,593 INFO L85 PathProgramCache]: Analyzing trace with hash 451649647, now seen corresponding path program 1 times [2022-11-16 12:40:11,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:40:11,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152906347] [2022-11-16 12:40:11,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:40:11,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:40:11,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:40:11,661 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:40:11,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:40:11,695 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:40:11,696 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 12:40:11,696 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2022-11-16 12:40:11,697 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-11-16 12:40:11,697 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2022-11-16 12:40:11,697 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2022-11-16 12:40:11,698 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2022-11-16 12:40:11,698 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-11-16 12:40:11,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:40:11,699 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-16 12:40:11,699 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 12:40:11,700 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-11-16 12:40:11,843 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 12:40:11,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 429 places, 464 transitions, 973 flow [2022-11-16 12:40:12,083 INFO L130 PetriNetUnfolder]: 51/527 cut-off events. [2022-11-16 12:40:12,083 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-11-16 12:40:12,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 558 conditions, 527 events. 51/527 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1933 event pairs, 0 based on Foata normal form. 0/465 useless extension candidates. Maximal degree in co-relation 442. Up to 12 conditions per place. [2022-11-16 12:40:12,105 INFO L82 GeneralOperation]: Start removeDead. Operand has 429 places, 464 transitions, 973 flow [2022-11-16 12:40:12,114 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 429 places, 464 transitions, 973 flow [2022-11-16 12:40:12,116 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:40:12,117 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@10b81f85, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:40:12,117 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-16 12:40:12,205 INFO L130 PetriNetUnfolder]: 20/269 cut-off events. [2022-11-16 12:40:12,206 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-11-16 12:40:12,206 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:40:12,206 INFO L209 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:40:12,207 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-16 12:40:12,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:40:12,208 INFO L85 PathProgramCache]: Analyzing trace with hash 2092002838, now seen corresponding path program 1 times [2022-11-16 12:40:12,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:40:12,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24420058] [2022-11-16 12:40:12,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:40:12,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:40:12,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:40:12,252 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:40:12,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:40:12,309 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:40:12,309 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 12:40:12,310 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2022-11-16 12:40:12,310 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2022-11-16 12:40:12,310 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2022-11-16 12:40:12,311 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2022-11-16 12:40:12,311 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2022-11-16 12:40:12,312 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2022-11-16 12:40:12,312 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2022-11-16 12:40:12,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:40:12,313 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-16 12:40:12,314 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 12:40:12,314 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2022-11-16 12:40:12,506 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 12:40:12,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 507 places, 549 transitions, 1158 flow [2022-11-16 12:40:12,812 INFO L130 PetriNetUnfolder]: 61/625 cut-off events. [2022-11-16 12:40:12,812 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2022-11-16 12:40:12,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 665 conditions, 625 events. 61/625 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2504 event pairs, 0 based on Foata normal form. 0/551 useless extension candidates. Maximal degree in co-relation 546. Up to 14 conditions per place. [2022-11-16 12:40:12,838 INFO L82 GeneralOperation]: Start removeDead. Operand has 507 places, 549 transitions, 1158 flow [2022-11-16 12:40:12,856 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 507 places, 549 transitions, 1158 flow [2022-11-16 12:40:12,857 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:40:12,866 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@10b81f85, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:40:12,866 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-11-16 12:40:12,961 INFO L130 PetriNetUnfolder]: 27/350 cut-off events. [2022-11-16 12:40:12,962 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2022-11-16 12:40:12,962 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:40:12,962 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:40:12,963 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-16 12:40:12,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:40:12,963 INFO L85 PathProgramCache]: Analyzing trace with hash 775476118, now seen corresponding path program 1 times [2022-11-16 12:40:12,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:40:12,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355589654] [2022-11-16 12:40:12,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:40:12,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:40:13,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:40:13,039 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:40:13,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:40:13,105 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:40:13,106 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 12:40:13,106 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2022-11-16 12:40:13,106 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (6 of 8 remaining) [2022-11-16 12:40:13,107 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 8 remaining) [2022-11-16 12:40:13,107 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 8 remaining) [2022-11-16 12:40:13,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 8 remaining) [2022-11-16 12:40:13,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 8 remaining) [2022-11-16 12:40:13,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 8 remaining) [2022-11-16 12:40:13,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 8 remaining) [2022-11-16 12:40:13,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:40:13,109 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-16 12:40:13,113 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 12:40:13,118 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2022-11-16 12:40:13,331 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 12:40:13,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 585 places, 634 transitions, 1345 flow [2022-11-16 12:40:13,766 INFO L130 PetriNetUnfolder]: 71/723 cut-off events. [2022-11-16 12:40:13,767 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2022-11-16 12:40:13,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 773 conditions, 723 events. 71/723 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 3070 event pairs, 0 based on Foata normal form. 0/637 useless extension candidates. Maximal degree in co-relation 651. Up to 16 conditions per place. [2022-11-16 12:40:13,800 INFO L82 GeneralOperation]: Start removeDead. Operand has 585 places, 634 transitions, 1345 flow [2022-11-16 12:40:13,817 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 585 places, 634 transitions, 1345 flow [2022-11-16 12:40:13,820 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:40:13,823 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@10b81f85, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:40:13,830 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-11-16 12:40:13,946 INFO L130 PetriNetUnfolder]: 32/405 cut-off events. [2022-11-16 12:40:13,946 INFO L131 PetriNetUnfolder]: For 56/56 co-relation queries the response was YES. [2022-11-16 12:40:13,946 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:40:13,947 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:40:13,947 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-11-16 12:40:13,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:40:13,948 INFO L85 PathProgramCache]: Analyzing trace with hash -2049297109, now seen corresponding path program 1 times [2022-11-16 12:40:13,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:40:13,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732607835] [2022-11-16 12:40:13,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:40:13,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:40:14,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:14,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:40:14,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:40:14,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732607835] [2022-11-16 12:40:14,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732607835] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:40:14,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:40:14,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:40:14,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290896660] [2022-11-16 12:40:14,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:40:14,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:40:14,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:40:14,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:40:14,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:40:14,344 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 512 out of 634 [2022-11-16 12:40:14,353 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 585 places, 634 transitions, 1345 flow. Second operand has 3 states, 3 states have (on average 514.6666666666666) internal successors, (1544), 3 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:14,353 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:40:14,353 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 512 of 634 [2022-11-16 12:40:14,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand