./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-simple-equiv.wvr.c --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_fae59fea-b594-459d-b5bd-c3e019e51c55/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fae59fea-b594-459d-b5bd-c3e019e51c55/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_fae59fea-b594-459d-b5bd-c3e019e51c55/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fae59fea-b594-459d-b5bd-c3e019e51c55/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-simple-equiv.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fae59fea-b594-459d-b5bd-c3e019e51c55/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_fae59fea-b594-459d-b5bd-c3e019e51c55/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 6e064514c886eab27bff1253cfa87b1ac324d3dc8890599c3d4384e987c0d244 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:51:51,440 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:51:51,442 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:51:51,489 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:51:51,490 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:51:51,491 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:51:51,493 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:51:51,495 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:51:51,497 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:51:51,498 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:51:51,499 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:51:51,500 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:51:51,501 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:51:51,502 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:51:51,503 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:51:51,511 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:51:51,512 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:51:51,513 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:51:51,515 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:51:51,518 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:51:51,520 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:51:51,521 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:51:51,522 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:51:51,523 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:51:51,527 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:51:51,527 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:51:51,528 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:51:51,529 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:51:51,529 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:51:51,531 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:51:51,531 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:51:51,532 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:51:51,533 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:51:51,533 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:51:51,535 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:51:51,535 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:51:51,535 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:51:51,536 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:51:51,536 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:51:51,537 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:51:51,537 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:51:51,538 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fae59fea-b594-459d-b5bd-c3e019e51c55/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 19:51:51,564 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:51:51,564 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:51:51,564 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:51:51,564 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:51:51,565 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:51:51,566 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:51:51,566 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:51:51,566 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:51:51,566 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:51:51,566 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:51:51,567 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:51:51,567 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:51:51,567 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 19:51:51,567 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:51:51,567 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 19:51:51,567 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:51:51,568 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:51:51,568 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:51:51,568 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 19:51:51,568 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:51:51,568 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:51:51,569 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:51:51,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:51:51,569 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:51:51,569 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:51:51,569 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 19:51:51,570 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:51:51,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 19:51:51,570 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 19:51:51,570 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 19:51:51,570 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 19:51:51,571 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:51:51,571 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_fae59fea-b594-459d-b5bd-c3e019e51c55/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fae59fea-b594-459d-b5bd-c3e019e51c55/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e064514c886eab27bff1253cfa87b1ac324d3dc8890599c3d4384e987c0d244 [2021-10-21 19:51:51,804 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:51:51,829 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:51:51,831 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:51:51,832 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:51:51,833 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:51:51,834 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fae59fea-b594-459d-b5bd-c3e019e51c55/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/weaver/parallel-simple-equiv.wvr.c [2021-10-21 19:51:51,913 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fae59fea-b594-459d-b5bd-c3e019e51c55/bin/uautomizer-j4sWxH34Be/data/59cdaf5a4/b86fe4680b684411b2abbddde7162523/FLAG6f9b12792 [2021-10-21 19:51:52,331 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:51:52,332 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fae59fea-b594-459d-b5bd-c3e019e51c55/sv-benchmarks/c/weaver/parallel-simple-equiv.wvr.c [2021-10-21 19:51:52,340 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fae59fea-b594-459d-b5bd-c3e019e51c55/bin/uautomizer-j4sWxH34Be/data/59cdaf5a4/b86fe4680b684411b2abbddde7162523/FLAG6f9b12792 [2021-10-21 19:51:52,753 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fae59fea-b594-459d-b5bd-c3e019e51c55/bin/uautomizer-j4sWxH34Be/data/59cdaf5a4/b86fe4680b684411b2abbddde7162523 [2021-10-21 19:51:52,755 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:51:52,756 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:51:52,758 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:51:52,758 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:51:52,761 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:51:52,762 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:51:52" (1/1) ... [2021-10-21 19:51:52,763 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3286a4ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:51:52, skipping insertion in model container [2021-10-21 19:51:52,763 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:51:52" (1/1) ... [2021-10-21 19:51:52,774 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:51:52,791 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:51:52,927 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_fae59fea-b594-459d-b5bd-c3e019e51c55/sv-benchmarks/c/weaver/parallel-simple-equiv.wvr.c[2212,2225] [2021-10-21 19:51:52,931 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:51:52,939 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:51:52,959 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_fae59fea-b594-459d-b5bd-c3e019e51c55/sv-benchmarks/c/weaver/parallel-simple-equiv.wvr.c[2212,2225] [2021-10-21 19:51:52,960 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:51:52,974 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:51:52,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:51:52 WrapperNode [2021-10-21 19:51:52,975 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:51:52,976 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:51:52,976 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:51:52,976 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:51:52,984 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:51:52" (1/1) ... [2021-10-21 19:51:52,992 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:51:52" (1/1) ... [2021-10-21 19:51:53,012 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:51:53,013 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:51:53,013 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:51:53,013 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:51:53,040 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:51:52" (1/1) ... [2021-10-21 19:51:53,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:51:52" (1/1) ... [2021-10-21 19:51:53,042 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:51:52" (1/1) ... [2021-10-21 19:51:53,043 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:51:52" (1/1) ... [2021-10-21 19:51:53,048 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:51:52" (1/1) ... [2021-10-21 19:51:53,050 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:51:52" (1/1) ... [2021-10-21 19:51:53,052 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:51:52" (1/1) ... [2021-10-21 19:51:53,055 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:51:53,056 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:51:53,056 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:51:53,056 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:51:53,057 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:51:52" (1/1) ... [2021-10-21 19:51:53,065 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:51:53,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fae59fea-b594-459d-b5bd-c3e019e51c55/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:51:53,088 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fae59fea-b594-459d-b5bd-c3e019e51c55/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:51:53,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fae59fea-b594-459d-b5bd-c3e019e51c55/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:51:53,122 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-21 19:51:53,123 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-21 19:51:53,123 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-21 19:51:53,123 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-21 19:51:53,123 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-21 19:51:53,124 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-21 19:51:53,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:51:53,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:51:53,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-21 19:51:53,124 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-21 19:51:53,125 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-21 19:51:53,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:51:53,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:51:53,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-21 19:51:53,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 19:51:53,127 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 19:51:53,390 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:51:53,391 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-21 19:51:53,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:51:53 BoogieIcfgContainer [2021-10-21 19:51:53,393 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:51:53,395 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:51:53,395 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:51:53,399 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:51:53,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:51:52" (1/3) ... [2021-10-21 19:51:53,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73cbaa18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:51:53, skipping insertion in model container [2021-10-21 19:51:53,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:51:52" (2/3) ... [2021-10-21 19:51:53,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73cbaa18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:51:53, skipping insertion in model container [2021-10-21 19:51:53,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:51:53" (3/3) ... [2021-10-21 19:51:53,403 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-simple-equiv.wvr.c [2021-10-21 19:51:53,408 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-21 19:51:53,409 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:51:53,409 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 19:51:53,409 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-21 19:51:53,444 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:51:53,445 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:51:53,445 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:51:53,445 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:51:53,446 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:51:53,446 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:51:53,447 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:51:53,447 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:51:53,447 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:51:53,447 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:51:53,448 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:51:53,448 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:51:53,449 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:51:53,450 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:51:53,450 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:51:53,450 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:51:53,453 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:51:53,454 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:51:53,454 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:51:53,457 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:51:53,457 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:51:53,457 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:51:53,460 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:51:53,460 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:51:53,494 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-21 19:51:53,562 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:51:53,576 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 19:51:53,577 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-21 19:51:53,604 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 94 places, 86 transitions, 196 flow [2021-10-21 19:51:53,654 INFO L129 PetriNetUnfolder]: 2/83 cut-off events. [2021-10-21 19:51:53,654 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-21 19:51:53,657 INFO L84 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 83 events. 2/83 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 25 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2021-10-21 19:51:53,657 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 86 transitions, 196 flow [2021-10-21 19:51:53,665 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 73 transitions, 164 flow [2021-10-21 19:51:53,714 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-10-21 19:51:53,714 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-21 19:51:53,714 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:51:53,715 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:51:53,716 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 19:51:53,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:51:53,723 INFO L82 PathProgramCache]: Analyzing trace with hash 431681001, now seen corresponding path program 1 times [2021-10-21 19:51:53,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:51:53,733 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814978078] [2021-10-21 19:51:53,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:51:53,734 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:51:54,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:51:54,634 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 19:51:54,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:51:54,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814978078] [2021-10-21 19:51:54,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814978078] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:51:54,636 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:51:54,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-21 19:51:54,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765892859] [2021-10-21 19:51:54,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-21 19:51:54,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:51:54,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-21 19:51:54,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:51:54,723 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 86 [2021-10-21 19:51:54,746 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 73 transitions, 164 flow. Second operand has 11 states, 11 states have (on average 62.81818181818182) internal successors, (691), 11 states have internal predecessors, (691), 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 19:51:54,746 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:51:54,746 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 86 [2021-10-21 19:51:54,748 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:51:57,101 INFO L129 PetriNetUnfolder]: 20/159 cut-off events. [2021-10-21 19:51:57,102 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2021-10-21 19:51:57,104 INFO L84 FinitePrefix]: Finished finitePrefix Result has 246 conditions, 159 events. 20/159 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 411 event pairs, 4 based on Foata normal form. 3/157 useless extension candidates. Maximal degree in co-relation 157. Up to 41 conditions per place. [2021-10-21 19:51:57,106 INFO L132 encePairwiseOnDemand]: 70/86 looper letters, 17 selfloop transitions, 15 changer transitions 10/91 dead transitions. [2021-10-21 19:51:57,106 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 91 transitions, 284 flow [2021-10-21 19:51:57,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-21 19:51:57,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-21 19:51:57,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 839 transitions. [2021-10-21 19:51:57,125 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7504472271914132 [2021-10-21 19:51:57,126 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 839 transitions. [2021-10-21 19:51:57,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 839 transitions. [2021-10-21 19:51:57,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:51:57,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 839 transitions. [2021-10-21 19:51:57,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 64.53846153846153) internal successors, (839), 13 states have internal predecessors, (839), 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 19:51:57,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 86.0) internal successors, (1204), 14 states have internal predecessors, (1204), 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 19:51:57,148 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 86.0) internal successors, (1204), 14 states have internal predecessors, (1204), 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 19:51:57,150 INFO L186 Difference]: Start difference. First operand has 81 places, 73 transitions, 164 flow. Second operand 13 states and 839 transitions. [2021-10-21 19:51:57,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 91 transitions, 284 flow [2021-10-21 19:51:57,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 91 transitions, 272 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-10-21 19:51:57,158 INFO L242 Difference]: Finished difference. Result has 92 places, 81 transitions, 235 flow [2021-10-21 19:51:57,160 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=235, PETRI_PLACES=92, PETRI_TRANSITIONS=81} [2021-10-21 19:51:57,161 INFO L334 CegarLoopForPetriNet]: 81 programPoint places, 11 predicate places. [2021-10-21 19:51:57,162 INFO L470 AbstractCegarLoop]: Abstraction has has 92 places, 81 transitions, 235 flow [2021-10-21 19:51:57,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 62.81818181818182) internal successors, (691), 11 states have internal predecessors, (691), 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 19:51:57,163 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:51:57,163 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:51:57,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 19:51:57,164 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 19:51:57,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:51:57,164 INFO L82 PathProgramCache]: Analyzing trace with hash -42878295, now seen corresponding path program 2 times [2021-10-21 19:51:57,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:51:57,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161929669] [2021-10-21 19:51:57,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:51:57,170 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:51:57,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:51:57,683 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 19:51:57,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:51:57,683 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161929669] [2021-10-21 19:51:57,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161929669] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:51:57,684 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:51:57,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-21 19:51:57,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005353694] [2021-10-21 19:51:57,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 19:51:57,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:51:57,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 19:51:57,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:51:57,691 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 86 [2021-10-21 19:51:57,692 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 81 transitions, 235 flow. Second operand has 10 states, 10 states have (on average 63.0) internal successors, (630), 10 states have internal predecessors, (630), 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 19:51:57,692 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:51:57,692 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 86 [2021-10-21 19:51:57,692 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:51:58,097 INFO L129 PetriNetUnfolder]: 22/162 cut-off events. [2021-10-21 19:51:58,097 INFO L130 PetriNetUnfolder]: For 39/49 co-relation queries the response was YES. [2021-10-21 19:51:58,098 INFO L84 FinitePrefix]: Finished finitePrefix Result has 329 conditions, 162 events. 22/162 cut-off events. For 39/49 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 460 event pairs, 0 based on Foata normal form. 6/165 useless extension candidates. Maximal degree in co-relation 317. Up to 46 conditions per place. [2021-10-21 19:51:58,103 INFO L132 encePairwiseOnDemand]: 74/86 looper letters, 28 selfloop transitions, 18 changer transitions 10/105 dead transitions. [2021-10-21 19:51:58,103 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 105 transitions, 451 flow [2021-10-21 19:51:58,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-21 19:51:58,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-10-21 19:51:58,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 775 transitions. [2021-10-21 19:51:58,108 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.750968992248062 [2021-10-21 19:51:58,108 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 775 transitions. [2021-10-21 19:51:58,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 775 transitions. [2021-10-21 19:51:58,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:51:58,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 775 transitions. [2021-10-21 19:51:58,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 64.58333333333333) internal successors, (775), 12 states have internal predecessors, (775), 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 19:51:58,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 86.0) internal successors, (1118), 13 states have internal predecessors, (1118), 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 19:51:58,118 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 86.0) internal successors, (1118), 13 states have internal predecessors, (1118), 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 19:51:58,118 INFO L186 Difference]: Start difference. First operand has 92 places, 81 transitions, 235 flow. Second operand 12 states and 775 transitions. [2021-10-21 19:51:58,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 105 transitions, 451 flow [2021-10-21 19:51:58,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 105 transitions, 437 flow, removed 5 selfloop flow, removed 4 redundant places. [2021-10-21 19:51:58,130 INFO L242 Difference]: Finished difference. Result has 98 places, 95 transitions, 376 flow [2021-10-21 19:51:58,130 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=376, PETRI_PLACES=98, PETRI_TRANSITIONS=95} [2021-10-21 19:51:58,131 INFO L334 CegarLoopForPetriNet]: 81 programPoint places, 17 predicate places. [2021-10-21 19:51:58,131 INFO L470 AbstractCegarLoop]: Abstraction has has 98 places, 95 transitions, 376 flow [2021-10-21 19:51:58,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 63.0) internal successors, (630), 10 states have internal predecessors, (630), 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 19:51:58,132 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:51:58,132 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:51:58,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 19:51:58,133 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 19:51:58,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:51:58,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1081434737, now seen corresponding path program 3 times [2021-10-21 19:51:58,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:51:58,137 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433973717] [2021-10-21 19:51:58,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:51:58,138 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:51:58,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:51:58,486 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 19:51:58,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:51:58,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433973717] [2021-10-21 19:51:58,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433973717] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:51:58,487 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:51:58,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-21 19:51:58,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437403852] [2021-10-21 19:51:58,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-21 19:51:58,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:51:58,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-21 19:51:58,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:51:58,491 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 86 [2021-10-21 19:51:58,492 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 95 transitions, 376 flow. Second operand has 11 states, 11 states have (on average 62.81818181818182) internal successors, (691), 11 states have internal predecessors, (691), 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 19:51:58,492 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:51:58,492 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 86 [2021-10-21 19:51:58,492 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:51:58,831 INFO L129 PetriNetUnfolder]: 18/161 cut-off events. [2021-10-21 19:51:58,832 INFO L130 PetriNetUnfolder]: For 100/128 co-relation queries the response was YES. [2021-10-21 19:51:58,833 INFO L84 FinitePrefix]: Finished finitePrefix Result has 393 conditions, 161 events. 18/161 cut-off events. For 100/128 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 476 event pairs, 0 based on Foata normal form. 13/171 useless extension candidates. Maximal degree in co-relation 376. Up to 41 conditions per place. [2021-10-21 19:51:58,834 INFO L132 encePairwiseOnDemand]: 74/86 looper letters, 26 selfloop transitions, 19 changer transitions 7/101 dead transitions. [2021-10-21 19:51:58,835 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 101 transitions, 512 flow [2021-10-21 19:51:58,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-21 19:51:58,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-21 19:51:58,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 832 transitions. [2021-10-21 19:51:58,839 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7441860465116279 [2021-10-21 19:51:58,839 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 832 transitions. [2021-10-21 19:51:58,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 832 transitions. [2021-10-21 19:51:58,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:51:58,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 832 transitions. [2021-10-21 19:51:58,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 64.0) internal successors, (832), 13 states have internal predecessors, (832), 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 19:51:58,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 86.0) internal successors, (1204), 14 states have internal predecessors, (1204), 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 19:51:58,846 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 86.0) internal successors, (1204), 14 states have internal predecessors, (1204), 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 19:51:58,847 INFO L186 Difference]: Start difference. First operand has 98 places, 95 transitions, 376 flow. Second operand 13 states and 832 transitions. [2021-10-21 19:51:58,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 101 transitions, 512 flow [2021-10-21 19:51:58,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 101 transitions, 476 flow, removed 16 selfloop flow, removed 5 redundant places. [2021-10-21 19:51:58,854 INFO L242 Difference]: Finished difference. Result has 106 places, 94 transitions, 392 flow [2021-10-21 19:51:58,855 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=392, PETRI_PLACES=106, PETRI_TRANSITIONS=94} [2021-10-21 19:51:58,855 INFO L334 CegarLoopForPetriNet]: 81 programPoint places, 25 predicate places. [2021-10-21 19:51:58,855 INFO L470 AbstractCegarLoop]: Abstraction has has 106 places, 94 transitions, 392 flow [2021-10-21 19:51:58,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 62.81818181818182) internal successors, (691), 11 states have internal predecessors, (691), 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 19:51:58,856 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:51:58,857 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:51:58,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-21 19:51:58,857 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 19:51:58,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:51:58,858 INFO L82 PathProgramCache]: Analyzing trace with hash -2061773045, now seen corresponding path program 4 times [2021-10-21 19:51:58,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:51:58,858 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442363098] [2021-10-21 19:51:58,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:51:58,859 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:51:58,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:51:59,147 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 19:51:59,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:51:59,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442363098] [2021-10-21 19:51:59,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442363098] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:51:59,148 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:51:59,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-21 19:51:59,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432733118] [2021-10-21 19:51:59,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-21 19:51:59,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:51:59,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-21 19:51:59,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:51:59,151 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 86 [2021-10-21 19:51:59,152 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 94 transitions, 392 flow. Second operand has 11 states, 11 states have (on average 62.81818181818182) internal successors, (691), 11 states have internal predecessors, (691), 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 19:51:59,152 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:51:59,153 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 86 [2021-10-21 19:51:59,153 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:51:59,597 INFO L129 PetriNetUnfolder]: 17/172 cut-off events. [2021-10-21 19:51:59,597 INFO L130 PetriNetUnfolder]: For 136/153 co-relation queries the response was YES. [2021-10-21 19:51:59,598 INFO L84 FinitePrefix]: Finished finitePrefix Result has 430 conditions, 172 events. 17/172 cut-off events. For 136/153 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 550 event pairs, 0 based on Foata normal form. 11/181 useless extension candidates. Maximal degree in co-relation 410. Up to 23 conditions per place. [2021-10-21 19:51:59,599 INFO L132 encePairwiseOnDemand]: 74/86 looper letters, 14 selfloop transitions, 15 changer transitions 32/110 dead transitions. [2021-10-21 19:51:59,599 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 110 transitions, 622 flow [2021-10-21 19:51:59,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-21 19:51:59,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-21 19:51:59,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 838 transitions. [2021-10-21 19:51:59,603 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7495527728085868 [2021-10-21 19:51:59,604 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 838 transitions. [2021-10-21 19:51:59,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 838 transitions. [2021-10-21 19:51:59,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:51:59,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 838 transitions. [2021-10-21 19:51:59,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 64.46153846153847) internal successors, (838), 13 states have internal predecessors, (838), 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 19:51:59,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 86.0) internal successors, (1204), 14 states have internal predecessors, (1204), 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 19:51:59,611 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 86.0) internal successors, (1204), 14 states have internal predecessors, (1204), 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 19:51:59,611 INFO L186 Difference]: Start difference. First operand has 106 places, 94 transitions, 392 flow. Second operand 13 states and 838 transitions. [2021-10-21 19:51:59,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 110 transitions, 622 flow [2021-10-21 19:51:59,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 110 transitions, 531 flow, removed 14 selfloop flow, removed 14 redundant places. [2021-10-21 19:51:59,618 INFO L242 Difference]: Finished difference. Result has 106 places, 78 transitions, 289 flow [2021-10-21 19:51:59,618 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=289, PETRI_PLACES=106, PETRI_TRANSITIONS=78} [2021-10-21 19:51:59,619 INFO L334 CegarLoopForPetriNet]: 81 programPoint places, 25 predicate places. [2021-10-21 19:51:59,619 INFO L470 AbstractCegarLoop]: Abstraction has has 106 places, 78 transitions, 289 flow [2021-10-21 19:51:59,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 62.81818181818182) internal successors, (691), 11 states have internal predecessors, (691), 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 19:51:59,620 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:51:59,620 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:51:59,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-21 19:51:59,620 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 19:51:59,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:51:59,621 INFO L82 PathProgramCache]: Analyzing trace with hash 847406927, now seen corresponding path program 5 times [2021-10-21 19:51:59,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:51:59,621 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278138409] [2021-10-21 19:51:59,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:51:59,622 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:51:59,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:51:59,914 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 19:51:59,914 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:51:59,914 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278138409] [2021-10-21 19:51:59,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278138409] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:51:59,915 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:51:59,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-21 19:51:59,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759605386] [2021-10-21 19:51:59,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-21 19:51:59,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:51:59,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-21 19:51:59,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:51:59,918 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 86 [2021-10-21 19:51:59,919 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 78 transitions, 289 flow. Second operand has 11 states, 11 states have (on average 62.81818181818182) internal successors, (691), 11 states have internal predecessors, (691), 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 19:51:59,919 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:51:59,919 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 86 [2021-10-21 19:51:59,919 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:52:00,245 INFO L129 PetriNetUnfolder]: 2/102 cut-off events. [2021-10-21 19:52:00,245 INFO L130 PetriNetUnfolder]: For 51/51 co-relation queries the response was YES. [2021-10-21 19:52:00,246 INFO L84 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 102 events. 2/102 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 163 event pairs, 0 based on Foata normal form. 1/103 useless extension candidates. Maximal degree in co-relation 202. Up to 16 conditions per place. [2021-10-21 19:52:00,247 INFO L132 encePairwiseOnDemand]: 74/86 looper letters, 14 selfloop transitions, 8 changer transitions 10/81 dead transitions. [2021-10-21 19:52:00,247 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 81 transitions, 363 flow [2021-10-21 19:52:00,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-21 19:52:00,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-10-21 19:52:00,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 763 transitions. [2021-10-21 19:52:00,252 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7393410852713178 [2021-10-21 19:52:00,252 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 763 transitions. [2021-10-21 19:52:00,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 763 transitions. [2021-10-21 19:52:00,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:52:00,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 763 transitions. [2021-10-21 19:52:00,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 63.583333333333336) internal successors, (763), 12 states have internal predecessors, (763), 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 19:52:00,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 86.0) internal successors, (1118), 13 states have internal predecessors, (1118), 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 19:52:00,259 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 86.0) internal successors, (1118), 13 states have internal predecessors, (1118), 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 19:52:00,259 INFO L186 Difference]: Start difference. First operand has 106 places, 78 transitions, 289 flow. Second operand 12 states and 763 transitions. [2021-10-21 19:52:00,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 81 transitions, 363 flow [2021-10-21 19:52:00,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 81 transitions, 297 flow, removed 14 selfloop flow, removed 16 redundant places. [2021-10-21 19:52:00,280 INFO L242 Difference]: Finished difference. Result has 99 places, 71 transitions, 200 flow [2021-10-21 19:52:00,280 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=200, PETRI_PLACES=99, PETRI_TRANSITIONS=71} [2021-10-21 19:52:00,281 INFO L334 CegarLoopForPetriNet]: 81 programPoint places, 18 predicate places. [2021-10-21 19:52:00,281 INFO L470 AbstractCegarLoop]: Abstraction has has 99 places, 71 transitions, 200 flow [2021-10-21 19:52:00,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 62.81818181818182) internal successors, (691), 11 states have internal predecessors, (691), 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 19:52:00,281 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:52:00,282 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:52:00,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-21 19:52:00,282 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 19:52:00,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:52:00,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1374337329, now seen corresponding path program 6 times [2021-10-21 19:52:00,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:52:00,284 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902046087] [2021-10-21 19:52:00,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:52:00,284 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:52:00,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:52:00,595 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 19:52:00,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:52:00,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902046087] [2021-10-21 19:52:00,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902046087] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:52:00,596 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:52:00,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-21 19:52:00,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579016881] [2021-10-21 19:52:00,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-21 19:52:00,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:52:00,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-21 19:52:00,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:52:00,599 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 86 [2021-10-21 19:52:00,600 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 71 transitions, 200 flow. Second operand has 11 states, 11 states have (on average 62.81818181818182) internal successors, (691), 11 states have internal predecessors, (691), 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 19:52:00,600 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:52:00,600 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 86 [2021-10-21 19:52:00,600 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:52:00,837 INFO L129 PetriNetUnfolder]: 1/74 cut-off events. [2021-10-21 19:52:00,837 INFO L130 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2021-10-21 19:52:00,837 INFO L84 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 74 events. 1/74 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 45 event pairs, 0 based on Foata normal form. 1/75 useless extension candidates. Maximal degree in co-relation 124. Up to 7 conditions per place. [2021-10-21 19:52:00,838 INFO L132 encePairwiseOnDemand]: 74/86 looper letters, 0 selfloop transitions, 0 changer transitions 69/69 dead transitions. [2021-10-21 19:52:00,838 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 69 transitions, 236 flow [2021-10-21 19:52:00,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-21 19:52:00,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-10-21 19:52:00,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 754 transitions. [2021-10-21 19:52:00,841 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7306201550387597 [2021-10-21 19:52:00,841 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 754 transitions. [2021-10-21 19:52:00,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 754 transitions. [2021-10-21 19:52:00,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:52:00,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 754 transitions. [2021-10-21 19:52:00,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 62.833333333333336) internal successors, (754), 12 states have internal predecessors, (754), 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 19:52:00,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 86.0) internal successors, (1118), 13 states have internal predecessors, (1118), 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 19:52:00,848 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 86.0) internal successors, (1118), 13 states have internal predecessors, (1118), 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 19:52:00,848 INFO L186 Difference]: Start difference. First operand has 99 places, 71 transitions, 200 flow. Second operand 12 states and 754 transitions. [2021-10-21 19:52:00,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 69 transitions, 236 flow [2021-10-21 19:52:00,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 69 transitions, 194 flow, removed 6 selfloop flow, removed 15 redundant places. [2021-10-21 19:52:00,852 INFO L242 Difference]: Finished difference. Result has 85 places, 0 transitions, 0 flow [2021-10-21 19:52:00,852 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=85, PETRI_TRANSITIONS=0} [2021-10-21 19:52:00,852 INFO L334 CegarLoopForPetriNet]: 81 programPoint places, 4 predicate places. [2021-10-21 19:52:00,852 INFO L470 AbstractCegarLoop]: Abstraction has has 85 places, 0 transitions, 0 flow [2021-10-21 19:52:00,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 62.81818181818182) internal successors, (691), 11 states have internal predecessors, (691), 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 19:52:00,858 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:52:00,859 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-21 19:52:00,859 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-21 19:52:00,859 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-21 19:52:00,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-21 19:52:00,868 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-21 19:52:00,868 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:52:00,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:52:00 BasicIcfg [2021-10-21 19:52:00,870 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:52:00,871 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:52:00,873 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:52:00,873 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:52:00,873 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:51:53" (3/4) ... [2021-10-21 19:52:00,876 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-21 19:52:00,881 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-21 19:52:00,882 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-21 19:52:00,882 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2021-10-21 19:52:00,886 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-10-21 19:52:00,886 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-21 19:52:00,886 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 19:52:00,887 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 19:52:00,925 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fae59fea-b594-459d-b5bd-c3e019e51c55/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 19:52:00,925 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:52:00,927 INFO L168 Benchmark]: Toolchain (without parser) took 8169.43 ms. Allocated memory was 88.1 MB in the beginning and 132.1 MB in the end (delta: 44.0 MB). Free memory was 53.2 MB in the beginning and 57.3 MB in the end (delta: -4.0 MB). Peak memory consumption was 41.5 MB. Max. memory is 16.1 GB. [2021-10-21 19:52:00,927 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 88.1 MB. Free memory is still 54.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:52:00,928 INFO L168 Benchmark]: CACSL2BoogieTranslator took 217.38 ms. Allocated memory is still 88.1 MB. Free memory was 53.1 MB in the beginning and 42.9 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 19:52:00,928 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.51 ms. Allocated memory is still 88.1 MB. Free memory was 42.8 MB in the beginning and 41.2 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:52:00,929 INFO L168 Benchmark]: Boogie Preprocessor took 41.79 ms. Allocated memory was 88.1 MB in the beginning and 109.1 MB in the end (delta: 21.0 MB). Free memory was 41.2 MB in the beginning and 87.1 MB in the end (delta: -45.9 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. [2021-10-21 19:52:00,929 INFO L168 Benchmark]: RCFGBuilder took 337.67 ms. Allocated memory is still 109.1 MB. Free memory was 87.1 MB in the beginning and 74.6 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-21 19:52:00,930 INFO L168 Benchmark]: TraceAbstraction took 7475.45 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 74.1 MB in the beginning and 60.4 MB in the end (delta: 13.7 MB). Peak memory consumption was 36.5 MB. Max. memory is 16.1 GB. [2021-10-21 19:52:00,931 INFO L168 Benchmark]: Witness Printer took 54.15 ms. Allocated memory is still 132.1 MB. Free memory was 60.4 MB in the beginning and 57.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:52:00,933 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 88.1 MB. Free memory is still 54.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 217.38 ms. Allocated memory is still 88.1 MB. Free memory was 53.1 MB in the beginning and 42.9 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.51 ms. Allocated memory is still 88.1 MB. Free memory was 42.8 MB in the beginning and 41.2 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 41.79 ms. Allocated memory was 88.1 MB in the beginning and 109.1 MB in the end (delta: 21.0 MB). Free memory was 41.2 MB in the beginning and 87.1 MB in the end (delta: -45.9 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. * RCFGBuilder took 337.67 ms. Allocated memory is still 109.1 MB. Free memory was 87.1 MB in the beginning and 74.6 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7475.45 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 74.1 MB in the beginning and 60.4 MB in the end (delta: 13.7 MB). Peak memory consumption was 36.5 MB. Max. memory is 16.1 GB. * Witness Printer took 54.15 ms. Allocated memory is still 132.1 MB. Free memory was 60.4 MB in the beginning and 57.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 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 - PositiveResult [Line: 82]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 103 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 48.7ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 7307.4ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 4373.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 88.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 73 SDtfs, 102 SDslu, 237 SDs, 0 SdLazy, 1046 SolverSat, 91 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2874.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 120 GetRequests, 14 SyntacticMatches, 11 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 1466.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=392occurred in iteration=3, InterpolantAutomatonStates: 75, 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: 40.8ms SsaConstructionTime, 469.1ms SatisfiabilityAnalysisTime, 2045.6ms InterpolantComputationTime, 414 NumberOfCodeBlocks, 414 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 408 ConstructedInterpolants, 0 QuantifiedInterpolants, 7839 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-21 19:52:00,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fae59fea-b594-459d-b5bd-c3e019e51c55/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...