./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_34-traces-minepp-L-needs-to-be-um_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7175922-85aa-481b-9dac-79dfe02ecf83/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7175922-85aa-481b-9dac-79dfe02ecf83/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7175922-85aa-481b-9dac-79dfe02ecf83/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7175922-85aa-481b-9dac-79dfe02ecf83/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_34-traces-minepp-L-needs-to-be-um_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7175922-85aa-481b-9dac-79dfe02ecf83/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7175922-85aa-481b-9dac-79dfe02ecf83/bin/uautomizer-YU5uOKAj3y --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 b9cb80ce7b0c0db24d48a98e6e8d1fa81dc0ba8a1f2c5d148b0b0229d5ab18a1 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 17:53:31,383 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 17:53:31,385 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 17:53:31,436 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 17:53:31,437 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 17:53:31,441 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 17:53:31,444 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 17:53:31,448 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 17:53:31,450 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 17:53:31,455 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 17:53:31,457 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 17:53:31,459 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 17:53:31,459 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 17:53:31,462 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 17:53:31,464 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 17:53:31,468 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 17:53:31,470 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 17:53:31,471 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 17:53:31,474 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 17:53:31,481 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 17:53:31,483 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 17:53:31,485 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 17:53:31,488 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 17:53:31,489 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 17:53:31,498 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 17:53:31,498 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 17:53:31,499 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 17:53:31,501 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 17:53:31,502 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 17:53:31,503 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 17:53:31,504 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 17:53:31,505 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 17:53:31,507 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 17:53:31,508 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 17:53:31,510 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 17:53:31,510 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 17:53:31,511 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 17:53:31,511 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 17:53:31,511 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 17:53:31,512 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 17:53:31,514 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 17:53:31,515 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7175922-85aa-481b-9dac-79dfe02ecf83/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-13 17:53:31,558 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 17:53:31,558 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 17:53:31,559 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 17:53:31,559 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 17:53:31,560 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 17:53:31,560 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 17:53:31,561 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 17:53:31,561 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 17:53:31,562 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 17:53:31,562 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 17:53:31,563 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 17:53:31,563 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 17:53:31,564 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 17:53:31,564 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 17:53:31,564 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 17:53:31,565 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 17:53:31,565 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 17:53:31,565 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 17:53:31,565 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 17:53:31,566 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 17:53:31,566 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 17:53:31,566 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 17:53:31,567 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 17:53:31,567 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 17:53:31,567 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:53:31,567 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 17:53:31,568 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 17:53:31,568 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 17:53:31,568 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 17:53:31,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 17:53:31,570 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 17:53:31,570 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 17:53:31,571 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 17:53:31,571 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 17:53:31,572 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_f7175922-85aa-481b-9dac-79dfe02ecf83/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7175922-85aa-481b-9dac-79dfe02ecf83/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b9cb80ce7b0c0db24d48a98e6e8d1fa81dc0ba8a1f2c5d148b0b0229d5ab18a1 [2021-11-13 17:53:31,935 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 17:53:31,963 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 17:53:31,966 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 17:53:31,967 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 17:53:31,968 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 17:53:31,970 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7175922-85aa-481b-9dac-79dfe02ecf83/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/goblint-regression/13-privatized_34-traces-minepp-L-needs-to-be-um_true.i [2021-11-13 17:53:32,045 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7175922-85aa-481b-9dac-79dfe02ecf83/bin/uautomizer-YU5uOKAj3y/data/51b3ea909/0a72c1f4e74e4d8d97080b27bb7b30d9/FLAG792cff20a [2021-11-13 17:53:32,650 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 17:53:32,651 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7175922-85aa-481b-9dac-79dfe02ecf83/sv-benchmarks/c/goblint-regression/13-privatized_34-traces-minepp-L-needs-to-be-um_true.i [2021-11-13 17:53:32,664 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7175922-85aa-481b-9dac-79dfe02ecf83/bin/uautomizer-YU5uOKAj3y/data/51b3ea909/0a72c1f4e74e4d8d97080b27bb7b30d9/FLAG792cff20a [2021-11-13 17:53:32,922 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7175922-85aa-481b-9dac-79dfe02ecf83/bin/uautomizer-YU5uOKAj3y/data/51b3ea909/0a72c1f4e74e4d8d97080b27bb7b30d9 [2021-11-13 17:53:32,924 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 17:53:32,926 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 17:53:32,929 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 17:53:32,930 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 17:53:32,936 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 17:53:32,937 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:53:32" (1/1) ... [2021-11-13 17:53:32,938 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15cf008d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:53:32, skipping insertion in model container [2021-11-13 17:53:32,940 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:53:32" (1/1) ... [2021-11-13 17:53:32,948 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 17:53:33,010 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:53:33,226 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_f7175922-85aa-481b-9dac-79dfe02ecf83/sv-benchmarks/c/goblint-regression/13-privatized_34-traces-minepp-L-needs-to-be-um_true.i[1107,1120] [2021-11-13 17:53:33,392 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:53:33,405 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 17:53:33,417 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_f7175922-85aa-481b-9dac-79dfe02ecf83/sv-benchmarks/c/goblint-regression/13-privatized_34-traces-minepp-L-needs-to-be-um_true.i[1107,1120] [2021-11-13 17:53:33,448 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:53:33,501 INFO L208 MainTranslator]: Completed translation [2021-11-13 17:53:33,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:53:33 WrapperNode [2021-11-13 17:53:33,502 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 17:53:33,503 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 17:53:33,503 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 17:53:33,503 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 17:53:33,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:53:33" (1/1) ... [2021-11-13 17:53:33,555 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:53:33" (1/1) ... [2021-11-13 17:53:33,577 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 17:53:33,578 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 17:53:33,578 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 17:53:33,579 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 17:53:33,586 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:53:33" (1/1) ... [2021-11-13 17:53:33,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:53:33" (1/1) ... [2021-11-13 17:53:33,590 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:53:33" (1/1) ... [2021-11-13 17:53:33,590 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:53:33" (1/1) ... [2021-11-13 17:53:33,595 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:53:33" (1/1) ... [2021-11-13 17:53:33,597 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:53:33" (1/1) ... [2021-11-13 17:53:33,599 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:53:33" (1/1) ... [2021-11-13 17:53:33,602 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 17:53:33,603 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 17:53:33,604 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 17:53:33,604 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 17:53:33,605 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:53:33" (1/1) ... [2021-11-13 17:53:33,612 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:53:33,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7175922-85aa-481b-9dac-79dfe02ecf83/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:53:33,634 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7175922-85aa-481b-9dac-79dfe02ecf83/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 17:53:33,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7175922-85aa-481b-9dac-79dfe02ecf83/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 17:53:33,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-13 17:53:33,686 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-11-13 17:53:33,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 17:53:33,686 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2021-11-13 17:53:33,686 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2021-11-13 17:53:33,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 17:53:33,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 17:53:33,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 17:53:33,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 17:53:33,688 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-13 17:53:34,134 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 17:53:34,135 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-13 17:53:34,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:53:34 BoogieIcfgContainer [2021-11-13 17:53:34,137 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 17:53:34,138 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 17:53:34,139 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 17:53:34,145 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 17:53:34,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 05:53:32" (1/3) ... [2021-11-13 17:53:34,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17e113ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:53:34, skipping insertion in model container [2021-11-13 17:53:34,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:53:33" (2/3) ... [2021-11-13 17:53:34,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17e113ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:53:34, skipping insertion in model container [2021-11-13 17:53:34,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:53:34" (3/3) ... [2021-11-13 17:53:34,150 INFO L111 eAbstractionObserver]: Analyzing ICFG 13-privatized_34-traces-minepp-L-needs-to-be-um_true.i [2021-11-13 17:53:34,155 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-13 17:53:34,156 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 17:53:34,156 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 17:53:34,156 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-13 17:53:34,194 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:53:34,194 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:53:34,195 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:53:34,195 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:53:34,195 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:53:34,195 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:53:34,195 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:53:34,196 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:53:34,196 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:53:34,196 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:53:34,197 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:53:34,197 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:53:34,197 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:53:34,197 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:53:34,198 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:53:34,198 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:53:34,198 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:53:34,199 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:53:34,199 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:53:34,200 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:53:34,200 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:53:34,200 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:53:34,200 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:53:34,201 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:53:34,201 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:53:34,201 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:53:34,202 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:53:34,202 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:53:34,207 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:53:34,208 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:53:34,208 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:53:34,209 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:53:34,209 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:53:34,209 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:53:34,210 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:53:34,210 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:53:34,214 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-11-13 17:53:34,261 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 17:53:34,268 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 17:53:34,268 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-13 17:53:34,280 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 89 places, 87 transitions, 179 flow [2021-11-13 17:53:34,323 INFO L129 PetriNetUnfolder]: 2/86 cut-off events. [2021-11-13 17:53:34,323 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-13 17:53:34,326 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 86 events. 2/86 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 68 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2021-11-13 17:53:34,326 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 87 transitions, 179 flow [2021-11-13 17:53:34,331 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 76 transitions, 155 flow [2021-11-13 17:53:34,381 INFO L129 PetriNetUnfolder]: 1/75 cut-off events. [2021-11-13 17:53:34,381 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-13 17:53:34,381 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:53:34,382 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] [2021-11-13 17:53:34,382 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-11-13 17:53:34,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:53:34,388 INFO L85 PathProgramCache]: Analyzing trace with hash 678858592, now seen corresponding path program 1 times [2021-11-13 17:53:34,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:53:34,399 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094560191] [2021-11-13 17:53:34,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:53:34,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:53:34,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:34,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:53:34,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:53:34,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094560191] [2021-11-13 17:53:34,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094560191] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:53:34,903 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:53:34,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 17:53:34,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437621517] [2021-11-13 17:53:34,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:53:34,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:53:34,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:53:34,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:53:34,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:53:34,959 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 87 [2021-11-13 17:53:34,966 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 76 transitions, 155 flow. Second operand has 5 states, 5 states have (on average 77.2) internal successors, (386), 5 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:53:34,967 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 17:53:34,967 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 87 [2021-11-13 17:53:34,968 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 17:53:35,094 INFO L129 PetriNetUnfolder]: 9/123 cut-off events. [2021-11-13 17:53:35,095 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-11-13 17:53:35,096 INFO L84 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 123 events. 9/123 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 237 event pairs, 0 based on Foata normal form. 3/125 useless extension candidates. Maximal degree in co-relation 114. Up to 10 conditions per place. [2021-11-13 17:53:35,098 INFO L132 encePairwiseOnDemand]: 81/87 looper letters, 8 selfloop transitions, 3 changer transitions 9/88 dead transitions. [2021-11-13 17:53:35,099 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 88 transitions, 219 flow [2021-11-13 17:53:35,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:53:35,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-11-13 17:53:35,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 554 transitions. [2021-11-13 17:53:35,124 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.909688013136289 [2021-11-13 17:53:35,125 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 554 transitions. [2021-11-13 17:53:35,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 554 transitions. [2021-11-13 17:53:35,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:53:35,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 554 transitions. [2021-11-13 17:53:35,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 79.14285714285714) internal successors, (554), 7 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:53:35,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 87.0) internal successors, (696), 8 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:53:35,154 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 87.0) internal successors, (696), 8 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:53:35,156 INFO L186 Difference]: Start difference. First operand has 79 places, 76 transitions, 155 flow. Second operand 7 states and 554 transitions. [2021-11-13 17:53:35,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 88 transitions, 219 flow [2021-11-13 17:53:35,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 88 transitions, 218 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-11-13 17:53:35,175 INFO L242 Difference]: Finished difference. Result has 89 places, 76 transitions, 173 flow [2021-11-13 17:53:35,177 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=173, PETRI_PLACES=89, PETRI_TRANSITIONS=76} [2021-11-13 17:53:35,184 INFO L334 CegarLoopForPetriNet]: 79 programPoint places, 10 predicate places. [2021-11-13 17:53:35,185 INFO L470 AbstractCegarLoop]: Abstraction has has 89 places, 76 transitions, 173 flow [2021-11-13 17:53:35,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 77.2) internal successors, (386), 5 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:53:35,191 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:53:35,192 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] [2021-11-13 17:53:35,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 17:53:35,193 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-11-13 17:53:35,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:53:35,194 INFO L85 PathProgramCache]: Analyzing trace with hash -125867828, now seen corresponding path program 1 times [2021-11-13 17:53:35,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:53:35,195 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76059189] [2021-11-13 17:53:35,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:53:35,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:53:35,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:35,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:53:35,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:53:35,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76059189] [2021-11-13 17:53:35,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76059189] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:53:35,554 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:53:35,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 17:53:35,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613247066] [2021-11-13 17:53:35,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:53:35,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 17:53:35,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:53:35,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 17:53:35,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:53:35,559 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 87 [2021-11-13 17:53:35,560 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 76 transitions, 173 flow. Second operand has 8 states, 8 states have (on average 50.625) internal successors, (405), 8 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:53:35,560 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 17:53:35,560 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 87 [2021-11-13 17:53:35,560 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 17:53:35,824 INFO L129 PetriNetUnfolder]: 35/178 cut-off events. [2021-11-13 17:53:35,835 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-11-13 17:53:35,836 INFO L84 FinitePrefix]: Finished finitePrefix Result has 308 conditions, 178 events. 35/178 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 620 event pairs, 12 based on Foata normal form. 10/183 useless extension candidates. Maximal degree in co-relation 296. Up to 50 conditions per place. [2021-11-13 17:53:35,837 INFO L132 encePairwiseOnDemand]: 78/87 looper letters, 28 selfloop transitions, 7 changer transitions 12/82 dead transitions. [2021-11-13 17:53:35,837 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 82 transitions, 271 flow [2021-11-13 17:53:35,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 17:53:35,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-11-13 17:53:35,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 329 transitions. [2021-11-13 17:53:35,840 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6302681992337165 [2021-11-13 17:53:35,840 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 329 transitions. [2021-11-13 17:53:35,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 329 transitions. [2021-11-13 17:53:35,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:53:35,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 329 transitions. [2021-11-13 17:53:35,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 54.833333333333336) internal successors, (329), 6 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:53:35,855 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 87.0) internal successors, (609), 7 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:53:35,856 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 87.0) internal successors, (609), 7 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:53:35,856 INFO L186 Difference]: Start difference. First operand has 89 places, 76 transitions, 173 flow. Second operand 6 states and 329 transitions. [2021-11-13 17:53:35,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 82 transitions, 271 flow [2021-11-13 17:53:35,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 82 transitions, 257 flow, removed 4 selfloop flow, removed 6 redundant places. [2021-11-13 17:53:35,859 INFO L242 Difference]: Finished difference. Result has 84 places, 68 transitions, 156 flow [2021-11-13 17:53:35,860 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=156, PETRI_PLACES=84, PETRI_TRANSITIONS=68} [2021-11-13 17:53:35,861 INFO L334 CegarLoopForPetriNet]: 79 programPoint places, 5 predicate places. [2021-11-13 17:53:35,861 INFO L470 AbstractCegarLoop]: Abstraction has has 84 places, 68 transitions, 156 flow [2021-11-13 17:53:35,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 50.625) internal successors, (405), 8 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:53:35,862 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:53:35,862 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] [2021-11-13 17:53:35,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 17:53:35,863 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-11-13 17:53:35,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:53:35,863 INFO L85 PathProgramCache]: Analyzing trace with hash -340184147, now seen corresponding path program 1 times [2021-11-13 17:53:35,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:53:35,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415037574] [2021-11-13 17:53:35,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:53:35,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:53:35,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:36,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:53:36,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:53:36,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415037574] [2021-11-13 17:53:36,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415037574] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:53:36,008 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:53:36,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 17:53:36,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795223465] [2021-11-13 17:53:36,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:53:36,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:53:36,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:53:36,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:53:36,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:53:36,012 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 87 [2021-11-13 17:53:36,012 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 68 transitions, 156 flow. Second operand has 6 states, 6 states have (on average 56.166666666666664) internal successors, (337), 6 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:53:36,012 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 17:53:36,013 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 87 [2021-11-13 17:53:36,013 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 17:53:36,137 INFO L129 PetriNetUnfolder]: 13/108 cut-off events. [2021-11-13 17:53:36,137 INFO L130 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2021-11-13 17:53:36,138 INFO L84 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 108 events. 13/108 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 202 event pairs, 4 based on Foata normal form. 4/109 useless extension candidates. Maximal degree in co-relation 122. Up to 27 conditions per place. [2021-11-13 17:53:36,139 INFO L132 encePairwiseOnDemand]: 81/87 looper letters, 23 selfloop transitions, 6 changer transitions 3/72 dead transitions. [2021-11-13 17:53:36,139 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 72 transitions, 230 flow [2021-11-13 17:53:36,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:53:36,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-11-13 17:53:36,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 294 transitions. [2021-11-13 17:53:36,141 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6758620689655173 [2021-11-13 17:53:36,141 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 294 transitions. [2021-11-13 17:53:36,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 294 transitions. [2021-11-13 17:53:36,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:53:36,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 294 transitions. [2021-11-13 17:53:36,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 58.8) internal successors, (294), 5 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:53:36,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 87.0) internal successors, (522), 6 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:53:36,145 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 87.0) internal successors, (522), 6 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:53:36,145 INFO L186 Difference]: Start difference. First operand has 84 places, 68 transitions, 156 flow. Second operand 5 states and 294 transitions. [2021-11-13 17:53:36,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 72 transitions, 230 flow [2021-11-13 17:53:36,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 72 transitions, 220 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-11-13 17:53:36,155 INFO L242 Difference]: Finished difference. Result has 76 places, 68 transitions, 159 flow [2021-11-13 17:53:36,155 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=159, PETRI_PLACES=76, PETRI_TRANSITIONS=68} [2021-11-13 17:53:36,156 INFO L334 CegarLoopForPetriNet]: 79 programPoint places, -3 predicate places. [2021-11-13 17:53:36,158 INFO L470 AbstractCegarLoop]: Abstraction has has 76 places, 68 transitions, 159 flow [2021-11-13 17:53:36,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 56.166666666666664) internal successors, (337), 6 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:53:36,159 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:53:36,159 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] [2021-11-13 17:53:36,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 17:53:36,160 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-11-13 17:53:36,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:53:36,162 INFO L85 PathProgramCache]: Analyzing trace with hash 940134019, now seen corresponding path program 2 times [2021-11-13 17:53:36,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:53:36,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604994705] [2021-11-13 17:53:36,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:53:36,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:53:36,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:36,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:53:36,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:53:36,292 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604994705] [2021-11-13 17:53:36,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604994705] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:53:36,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:53:36,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 17:53:36,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919820132] [2021-11-13 17:53:36,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:53:36,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:53:36,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:53:36,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:53:36,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:53:36,296 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 87 [2021-11-13 17:53:36,299 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 68 transitions, 159 flow. Second operand has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:53:36,299 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 17:53:36,299 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 87 [2021-11-13 17:53:36,300 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 17:53:36,416 INFO L129 PetriNetUnfolder]: 11/104 cut-off events. [2021-11-13 17:53:36,416 INFO L130 PetriNetUnfolder]: For 19/20 co-relation queries the response was YES. [2021-11-13 17:53:36,417 INFO L84 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 104 events. 11/104 cut-off events. For 19/20 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 195 event pairs, 3 based on Foata normal form. 2/103 useless extension candidates. Maximal degree in co-relation 116. Up to 22 conditions per place. [2021-11-13 17:53:36,420 INFO L132 encePairwiseOnDemand]: 81/87 looper letters, 22 selfloop transitions, 4 changer transitions 9/72 dead transitions. [2021-11-13 17:53:36,420 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 72 transitions, 232 flow [2021-11-13 17:53:36,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:53:36,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-11-13 17:53:36,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 293 transitions. [2021-11-13 17:53:36,423 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6735632183908046 [2021-11-13 17:53:36,423 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 293 transitions. [2021-11-13 17:53:36,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 293 transitions. [2021-11-13 17:53:36,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:53:36,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 293 transitions. [2021-11-13 17:53:36,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 58.6) internal successors, (293), 5 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:53:36,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 87.0) internal successors, (522), 6 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:53:36,427 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 87.0) internal successors, (522), 6 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:53:36,427 INFO L186 Difference]: Start difference. First operand has 76 places, 68 transitions, 159 flow. Second operand 5 states and 293 transitions. [2021-11-13 17:53:36,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 72 transitions, 232 flow [2021-11-13 17:53:36,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 72 transitions, 225 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-11-13 17:53:36,435 INFO L242 Difference]: Finished difference. Result has 77 places, 62 transitions, 145 flow [2021-11-13 17:53:36,435 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=145, PETRI_PLACES=77, PETRI_TRANSITIONS=62} [2021-11-13 17:53:36,437 INFO L334 CegarLoopForPetriNet]: 79 programPoint places, -2 predicate places. [2021-11-13 17:53:36,437 INFO L470 AbstractCegarLoop]: Abstraction has has 77 places, 62 transitions, 145 flow [2021-11-13 17:53:36,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:53:36,438 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:53:36,438 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] [2021-11-13 17:53:36,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-13 17:53:36,440 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-11-13 17:53:36,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:53:36,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1319814827, now seen corresponding path program 1 times [2021-11-13 17:53:36,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:53:36,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348877600] [2021-11-13 17:53:36,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:53:36,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:53:36,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:36,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:53:36,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:53:36,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348877600] [2021-11-13 17:53:36,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348877600] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:53:36,528 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:53:36,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 17:53:36,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152430791] [2021-11-13 17:53:36,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:53:36,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:53:36,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:53:36,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:53:36,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:53:36,538 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 87 [2021-11-13 17:53:36,538 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 62 transitions, 145 flow. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:53:36,538 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 17:53:36,538 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 87 [2021-11-13 17:53:36,538 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 17:53:36,577 INFO L129 PetriNetUnfolder]: 0/66 cut-off events. [2021-11-13 17:53:36,577 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-11-13 17:53:36,578 INFO L84 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 66 events. 0/66 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 19 event pairs, 0 based on Foata normal form. 4/70 useless extension candidates. Maximal degree in co-relation 0. Up to 10 conditions per place. [2021-11-13 17:53:36,579 INFO L132 encePairwiseOnDemand]: 83/87 looper letters, 10 selfloop transitions, 4 changer transitions 0/62 dead transitions. [2021-11-13 17:53:36,579 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 62 transitions, 173 flow [2021-11-13 17:53:36,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:53:36,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-13 17:53:36,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 208 transitions. [2021-11-13 17:53:36,583 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7969348659003831 [2021-11-13 17:53:36,583 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 208 transitions. [2021-11-13 17:53:36,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 208 transitions. [2021-11-13 17:53:36,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:53:36,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 208 transitions. [2021-11-13 17:53:36,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:53:36,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:53:36,587 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:53:36,588 INFO L186 Difference]: Start difference. First operand has 77 places, 62 transitions, 145 flow. Second operand 3 states and 208 transitions. [2021-11-13 17:53:36,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 62 transitions, 173 flow [2021-11-13 17:53:36,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 62 transitions, 156 flow, removed 1 selfloop flow, removed 6 redundant places. [2021-11-13 17:53:36,595 INFO L242 Difference]: Finished difference. Result has 68 places, 62 transitions, 136 flow [2021-11-13 17:53:36,596 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=68, PETRI_TRANSITIONS=62} [2021-11-13 17:53:36,600 INFO L334 CegarLoopForPetriNet]: 79 programPoint places, -11 predicate places. [2021-11-13 17:53:36,601 INFO L470 AbstractCegarLoop]: Abstraction has has 68 places, 62 transitions, 136 flow [2021-11-13 17:53:36,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:53:36,601 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:53:36,606 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] [2021-11-13 17:53:36,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 17:53:36,606 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-11-13 17:53:36,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:53:36,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1315259663, now seen corresponding path program 2 times [2021-11-13 17:53:36,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:53:36,607 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851214248] [2021-11-13 17:53:36,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:53:36,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:53:36,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:36,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:53:36,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:53:36,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851214248] [2021-11-13 17:53:36,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851214248] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:53:36,840 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:53:36,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-13 17:53:36,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274673239] [2021-11-13 17:53:36,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:53:36,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 17:53:36,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:53:36,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 17:53:36,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-13 17:53:36,853 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 87 [2021-11-13 17:53:36,854 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 62 transitions, 136 flow. Second operand has 9 states, 9 states have (on average 50.333333333333336) internal successors, (453), 9 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:53:36,854 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 17:53:36,854 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 87 [2021-11-13 17:53:36,855 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 17:53:36,999 INFO L129 PetriNetUnfolder]: 0/57 cut-off events. [2021-11-13 17:53:36,999 INFO L130 PetriNetUnfolder]: For 3/5 co-relation queries the response was YES. [2021-11-13 17:53:37,000 INFO L84 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 57 events. 0/57 cut-off events. For 3/5 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 19 event pairs, 0 based on Foata normal form. 2/59 useless extension candidates. Maximal degree in co-relation 0. Up to 8 conditions per place. [2021-11-13 17:53:37,000 INFO L132 encePairwiseOnDemand]: 81/87 looper letters, 0 selfloop transitions, 0 changer transitions 56/56 dead transitions. [2021-11-13 17:53:37,000 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 56 transitions, 183 flow [2021-11-13 17:53:37,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:53:37,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-11-13 17:53:37,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 360 transitions. [2021-11-13 17:53:37,002 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5911330049261084 [2021-11-13 17:53:37,002 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 360 transitions. [2021-11-13 17:53:37,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 360 transitions. [2021-11-13 17:53:37,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:53:37,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 360 transitions. [2021-11-13 17:53:37,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 51.42857142857143) internal successors, (360), 7 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:53:37,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 87.0) internal successors, (696), 8 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:53:37,007 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 87.0) internal successors, (696), 8 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:53:37,007 INFO L186 Difference]: Start difference. First operand has 68 places, 62 transitions, 136 flow. Second operand 7 states and 360 transitions. [2021-11-13 17:53:37,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 56 transitions, 183 flow [2021-11-13 17:53:37,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 56 transitions, 179 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-11-13 17:53:37,008 INFO L242 Difference]: Finished difference. Result has 66 places, 0 transitions, 0 flow [2021-11-13 17:53:37,009 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=66, PETRI_TRANSITIONS=0} [2021-11-13 17:53:37,010 INFO L334 CegarLoopForPetriNet]: 79 programPoint places, -13 predicate places. [2021-11-13 17:53:37,010 INFO L470 AbstractCegarLoop]: Abstraction has has 66 places, 0 transitions, 0 flow [2021-11-13 17:53:37,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 50.333333333333336) internal successors, (453), 9 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:53:37,013 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-13 17:53:37,013 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 2 remaining) [2021-11-13 17:53:37,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-13 17:53:37,017 INFO L732 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1] [2021-11-13 17:53:37,020 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-13 17:53:37,020 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-13 17:53:37,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 05:53:37 BasicIcfg [2021-11-13 17:53:37,024 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-13 17:53:37,025 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-13 17:53:37,025 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-13 17:53:37,025 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-13 17:53:37,026 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:53:34" (3/4) ... [2021-11-13 17:53:37,029 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-13 17:53:37,035 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2021-11-13 17:53:37,040 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-11-13 17:53:37,040 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-13 17:53:37,041 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-13 17:53:37,041 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-13 17:53:37,077 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7175922-85aa-481b-9dac-79dfe02ecf83/bin/uautomizer-YU5uOKAj3y/witness.graphml [2021-11-13 17:53:37,078 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-13 17:53:37,078 INFO L158 Benchmark]: Toolchain (without parser) took 4152.48ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 82.1MB in the beginning and 81.6MB in the end (delta: 480.4kB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2021-11-13 17:53:37,079 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 79.7MB. Free memory was 59.7MB in the beginning and 59.6MB in the end (delta: 75.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 17:53:37,079 INFO L158 Benchmark]: CACSL2BoogieTranslator took 573.07ms. Allocated memory is still 102.8MB. Free memory was 81.7MB in the beginning and 69.0MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-13 17:53:37,080 INFO L158 Benchmark]: Boogie Procedure Inliner took 74.45ms. Allocated memory is still 102.8MB. Free memory was 69.0MB in the beginning and 66.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 17:53:37,080 INFO L158 Benchmark]: Boogie Preprocessor took 24.39ms. Allocated memory is still 102.8MB. Free memory was 66.9MB in the beginning and 65.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 17:53:37,080 INFO L158 Benchmark]: RCFGBuilder took 533.73ms. Allocated memory is still 102.8MB. Free memory was 65.8MB in the beginning and 53.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-13 17:53:37,081 INFO L158 Benchmark]: TraceAbstraction took 2886.09ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 52.7MB in the beginning and 84.8MB in the end (delta: -32.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 17:53:37,081 INFO L158 Benchmark]: Witness Printer took 52.63ms. Allocated memory is still 123.7MB. Free memory was 84.8MB in the beginning and 81.6MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-13 17:53:37,083 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 79.7MB. Free memory was 59.7MB in the beginning and 59.6MB in the end (delta: 75.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 573.07ms. Allocated memory is still 102.8MB. Free memory was 81.7MB in the beginning and 69.0MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 74.45ms. Allocated memory is still 102.8MB. Free memory was 69.0MB in the beginning and 66.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.39ms. Allocated memory is still 102.8MB. Free memory was 66.9MB in the beginning and 65.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 533.73ms. Allocated memory is still 102.8MB. Free memory was 65.8MB in the beginning and 53.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 2886.09ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 52.7MB in the beginning and 84.8MB in the end (delta: -32.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 52.63ms. Allocated memory is still 123.7MB. Free memory was 84.8MB in the beginning and 81.6MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: 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 3 procedures, 105 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.8s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 115 SdHoareTripleChecker+Valid, 434.02ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 115 mSDsluCounter, 88 SdHoareTripleChecker+Invalid, 328.56ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 56 mSDsCounter, 116 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 324 IncrementalHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 116 mSolverCounterUnsat, 40 mSDtfsCounter, 324 mSolverCounterSat, 8.81ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 12 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=173occurred in iteration=1, InterpolantAutomatonStates: 33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 362 NumberOfCodeBlocks, 362 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 356 ConstructedInterpolants, 0 QuantifiedInterpolants, 1898 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! [2021-11-13 17:53:37,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7175922-85aa-481b-9dac-79dfe02ecf83/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE