./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_51-refine-protected-loop2_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b9a8b-68d2-48fe-9d36-45e004d03a3d/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b9a8b-68d2-48fe-9d36-45e004d03a3d/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b9a8b-68d2-48fe-9d36-45e004d03a3d/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b9a8b-68d2-48fe-9d36-45e004d03a3d/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_51-refine-protected-loop2_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b9a8b-68d2-48fe-9d36-45e004d03a3d/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b9a8b-68d2-48fe-9d36-45e004d03a3d/bin/uautomizer-GMMbpWq8iD --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 8175d7ec219546f3b9035c00de62088e8321c7ce4d7945ce539aaa495076e121 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:09:38,985 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:09:38,988 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:09:39,021 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:09:39,022 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:09:39,023 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:09:39,025 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:09:39,028 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:09:39,030 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:09:39,032 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:09:39,033 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:09:39,035 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:09:39,036 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:09:39,037 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:09:39,040 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:09:39,041 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:09:39,043 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:09:39,044 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:09:39,047 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:09:39,050 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:09:39,052 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:09:39,054 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:09:39,055 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:09:39,057 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:09:39,061 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:09:39,062 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:09:39,062 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:09:39,063 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:09:39,064 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:09:39,066 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:09:39,066 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:09:39,067 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:09:39,068 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:09:39,070 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:09:39,071 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:09:39,072 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:09:39,073 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:09:39,073 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:09:39,074 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:09:39,075 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:09:39,076 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:09:39,078 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b9a8b-68d2-48fe-9d36-45e004d03a3d/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 23:09:39,103 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:09:39,104 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:09:39,104 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:09:39,104 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:09:39,106 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:09:39,106 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:09:39,106 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:09:39,106 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:09:39,107 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:09:39,107 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:09:39,107 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:09:39,107 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:09:39,108 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 23:09:39,108 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:09:39,108 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 23:09:39,108 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:09:39,109 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:09:39,109 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:09:39,109 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 23:09:39,109 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:09:39,110 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:09:39,110 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:09:39,110 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:09:39,110 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:09:39,111 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:09:39,111 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 23:09:39,111 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:09:39,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:09:39,112 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 23:09:39,112 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 23:09:39,112 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 23:09:39,112 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:09:39,113 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_b10b9a8b-68d2-48fe-9d36-45e004d03a3d/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b9a8b-68d2-48fe-9d36-45e004d03a3d/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8175d7ec219546f3b9035c00de62088e8321c7ce4d7945ce539aaa495076e121 [2021-10-28 23:09:39,451 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:09:39,473 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:09:39,476 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:09:39,477 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:09:39,478 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:09:39,479 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b9a8b-68d2-48fe-9d36-45e004d03a3d/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/goblint-regression/13-privatized_51-refine-protected-loop2_true.i [2021-10-28 23:09:39,560 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b9a8b-68d2-48fe-9d36-45e004d03a3d/bin/uautomizer-GMMbpWq8iD/data/fd79525dc/1d3e85bad4b74656b8d56a230bf57b69/FLAGe025d3327 [2021-10-28 23:09:40,066 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:09:40,066 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b9a8b-68d2-48fe-9d36-45e004d03a3d/sv-benchmarks/c/goblint-regression/13-privatized_51-refine-protected-loop2_true.i [2021-10-28 23:09:40,086 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b9a8b-68d2-48fe-9d36-45e004d03a3d/bin/uautomizer-GMMbpWq8iD/data/fd79525dc/1d3e85bad4b74656b8d56a230bf57b69/FLAGe025d3327 [2021-10-28 23:09:40,391 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b9a8b-68d2-48fe-9d36-45e004d03a3d/bin/uautomizer-GMMbpWq8iD/data/fd79525dc/1d3e85bad4b74656b8d56a230bf57b69 [2021-10-28 23:09:40,394 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:09:40,395 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:09:40,401 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:09:40,402 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:09:40,405 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:09:40,406 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:09:40" (1/1) ... [2021-10-28 23:09:40,407 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@271295a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:09:40, skipping insertion in model container [2021-10-28 23:09:40,407 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:09:40" (1/1) ... [2021-10-28 23:09:40,414 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:09:40,467 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:09:40,671 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_b10b9a8b-68d2-48fe-9d36-45e004d03a3d/sv-benchmarks/c/goblint-regression/13-privatized_51-refine-protected-loop2_true.i[837,850] [2021-10-28 23:09:40,847 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:09:40,863 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:09:40,880 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_b10b9a8b-68d2-48fe-9d36-45e004d03a3d/sv-benchmarks/c/goblint-regression/13-privatized_51-refine-protected-loop2_true.i[837,850] [2021-10-28 23:09:40,939 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:09:40,991 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:09:40,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:09:40 WrapperNode [2021-10-28 23:09:40,992 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:09:40,993 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:09:40,993 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:09:40,993 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:09:41,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:09:40" (1/1) ... [2021-10-28 23:09:41,020 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:09:40" (1/1) ... [2021-10-28 23:09:41,048 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:09:41,049 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:09:41,049 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:09:41,049 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:09:41,058 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:09:40" (1/1) ... [2021-10-28 23:09:41,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:09:40" (1/1) ... [2021-10-28 23:09:41,062 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:09:40" (1/1) ... [2021-10-28 23:09:41,062 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:09:40" (1/1) ... [2021-10-28 23:09:41,068 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:09:40" (1/1) ... [2021-10-28 23:09:41,072 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:09:40" (1/1) ... [2021-10-28 23:09:41,074 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:09:40" (1/1) ... [2021-10-28 23:09:41,077 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:09:41,078 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:09:41,078 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:09:41,079 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:09:41,080 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:09:40" (1/1) ... [2021-10-28 23:09:41,088 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:09:41,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b9a8b-68d2-48fe-9d36-45e004d03a3d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:09:41,114 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b9a8b-68d2-48fe-9d36-45e004d03a3d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:09:41,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b9a8b-68d2-48fe-9d36-45e004d03a3d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:09:41,164 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2021-10-28 23:09:41,165 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2021-10-28 23:09:41,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 23:09:41,165 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-10-28 23:09:41,165 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:09:41,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 23:09:41,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:09:41,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:09:41,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:09:41,168 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-28 23:09:41,565 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:09:41,565 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2021-10-28 23:09:41,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:09:41 BoogieIcfgContainer [2021-10-28 23:09:41,568 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:09:41,570 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:09:41,570 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:09:41,577 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:09:41,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:09:40" (1/3) ... [2021-10-28 23:09:41,579 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d7feac0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:09:41, skipping insertion in model container [2021-10-28 23:09:41,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:09:40" (2/3) ... [2021-10-28 23:09:41,579 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d7feac0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:09:41, skipping insertion in model container [2021-10-28 23:09:41,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:09:41" (3/3) ... [2021-10-28 23:09:41,582 INFO L111 eAbstractionObserver]: Analyzing ICFG 13-privatized_51-refine-protected-loop2_true.i [2021-10-28 23:09:41,587 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-28 23:09:41,587 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:09:41,588 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 23:09:41,588 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-28 23:09:41,646 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,646 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,647 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,647 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,647 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,647 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,648 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,648 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,648 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,648 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,649 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,649 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,650 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,650 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,650 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,650 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_pqueue_get_~got~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,651 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,651 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,651 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_pqueue_get_~got~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,651 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,652 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_pqueue_get_~got~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,653 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_pqueue_get_~got~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,653 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,654 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,654 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,654 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,655 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,655 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,656 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,656 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,657 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,658 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,658 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,660 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,661 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,661 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,661 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,661 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,662 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,663 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,663 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,663 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,664 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_pqueue_get_~got~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,664 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,664 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_pqueue_get_~got~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,664 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,665 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,665 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,665 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,666 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#t~ret7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,666 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,666 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#t~ret7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,666 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_pqueue_get_~got~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,667 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_pqueue_get_~got~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,667 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#t~ret7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,668 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#t~ret7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,668 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#t~ret7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,668 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#t~ret7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,668 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,669 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,669 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,669 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,673 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_pqueue_get_~got~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,673 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,673 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,674 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#t~ret7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,674 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,674 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,674 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,675 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,675 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,675 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,675 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,676 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:09:41,682 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-28 23:09:41,762 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:09:41,769 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 23:09:41,769 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-28 23:09:41,782 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 97 places, 101 transitions, 207 flow [2021-10-28 23:09:41,858 INFO L129 PetriNetUnfolder]: 8/100 cut-off events. [2021-10-28 23:09:41,858 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 23:09:41,863 INFO L84 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 100 events. 8/100 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 116 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2021-10-28 23:09:41,864 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 101 transitions, 207 flow [2021-10-28 23:09:41,869 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 100 transitions, 203 flow [2021-10-28 23:09:41,892 INFO L129 PetriNetUnfolder]: 4/76 cut-off events. [2021-10-28 23:09:41,892 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 23:09:41,893 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:09:41,894 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] [2021-10-28 23:09:41,894 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:09:41,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:09:41,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1289844662, now seen corresponding path program 1 times [2021-10-28 23:09:41,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:09:41,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422007909] [2021-10-28 23:09:41,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:09:41,911 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:09:42,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:09:42,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:09:42,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:09:42,221 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422007909] [2021-10-28 23:09:42,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422007909] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:09:42,222 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:09:42,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:09:42,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021223342] [2021-10-28 23:09:42,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:09:42,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:09:42,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:09:42,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:09:42,253 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 101 [2021-10-28 23:09:42,260 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 100 transitions, 203 flow. Second operand has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:09:42,261 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:09:42,261 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 101 [2021-10-28 23:09:42,262 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:09:42,336 INFO L129 PetriNetUnfolder]: 26/182 cut-off events. [2021-10-28 23:09:42,337 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 23:09:42,339 INFO L84 FinitePrefix]: Finished finitePrefix Result has 229 conditions, 182 events. 26/182 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 439 event pairs, 6 based on Foata normal form. 15/181 useless extension candidates. Maximal degree in co-relation 185. Up to 37 conditions per place. [2021-10-28 23:09:42,342 INFO L132 encePairwiseOnDemand]: 93/101 looper letters, 12 selfloop transitions, 2 changer transitions 0/95 dead transitions. [2021-10-28 23:09:42,342 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 95 transitions, 221 flow [2021-10-28 23:09:42,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:09:42,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-28 23:09:42,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 276 transitions. [2021-10-28 23:09:42,357 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9108910891089109 [2021-10-28 23:09:42,358 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 276 transitions. [2021-10-28 23:09:42,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 276 transitions. [2021-10-28 23:09:42,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:09:42,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 276 transitions. [2021-10-28 23:09:42,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:09:42,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:09:42,375 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:09:42,377 INFO L186 Difference]: Start difference. First operand has 96 places, 100 transitions, 203 flow. Second operand 3 states and 276 transitions. [2021-10-28 23:09:42,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 95 transitions, 221 flow [2021-10-28 23:09:42,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 95 transitions, 220 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-28 23:09:42,386 INFO L242 Difference]: Finished difference. Result has 94 places, 93 transitions, 198 flow [2021-10-28 23:09:42,388 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=94, PETRI_TRANSITIONS=93} [2021-10-28 23:09:42,389 INFO L334 CegarLoopForPetriNet]: 96 programPoint places, -2 predicate places. [2021-10-28 23:09:42,390 INFO L470 AbstractCegarLoop]: Abstraction has has 94 places, 93 transitions, 198 flow [2021-10-28 23:09:42,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:09:42,390 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:09:42,391 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] [2021-10-28 23:09:42,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:09:42,391 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:09:42,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:09:42,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1061250278, now seen corresponding path program 1 times [2021-10-28 23:09:42,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:09:42,393 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338838914] [2021-10-28 23:09:42,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:09:42,393 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:09:42,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:09:42,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:09:42,588 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:09:42,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338838914] [2021-10-28 23:09:42,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338838914] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:09:42,589 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:09:42,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 23:09:42,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037801762] [2021-10-28 23:09:42,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:09:42,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:09:42,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:09:42,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:09:42,594 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 101 [2021-10-28 23:09:42,595 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 93 transitions, 198 flow. Second operand has 5 states, 5 states have (on average 81.0) internal successors, (405), 5 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) [2021-10-28 23:09:42,595 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:09:42,595 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 101 [2021-10-28 23:09:42,596 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:09:42,952 INFO L129 PetriNetUnfolder]: 96/624 cut-off events. [2021-10-28 23:09:42,953 INFO L130 PetriNetUnfolder]: For 33/35 co-relation queries the response was YES. [2021-10-28 23:09:42,957 INFO L84 FinitePrefix]: Finished finitePrefix Result has 857 conditions, 624 events. 96/624 cut-off events. For 33/35 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3023 event pairs, 6 based on Foata normal form. 0/588 useless extension candidates. Maximal degree in co-relation 810. Up to 52 conditions per place. [2021-10-28 23:09:42,962 INFO L132 encePairwiseOnDemand]: 92/101 looper letters, 41 selfloop transitions, 20 changer transitions 0/137 dead transitions. [2021-10-28 23:09:42,962 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 137 transitions, 428 flow [2021-10-28 23:09:42,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:09:42,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-28 23:09:42,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 773 transitions. [2021-10-28 23:09:42,971 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8503850385038504 [2021-10-28 23:09:42,972 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 773 transitions. [2021-10-28 23:09:42,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 773 transitions. [2021-10-28 23:09:42,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:09:42,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 773 transitions. [2021-10-28 23:09:42,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 85.88888888888889) internal successors, (773), 9 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:09:42,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 101.0) internal successors, (1010), 10 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:09:42,989 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 101.0) internal successors, (1010), 10 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:09:42,989 INFO L186 Difference]: Start difference. First operand has 94 places, 93 transitions, 198 flow. Second operand 9 states and 773 transitions. [2021-10-28 23:09:42,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 137 transitions, 428 flow [2021-10-28 23:09:42,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 137 transitions, 426 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-28 23:09:42,994 INFO L242 Difference]: Finished difference. Result has 108 places, 113 transitions, 363 flow [2021-10-28 23:09:42,995 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=363, PETRI_PLACES=108, PETRI_TRANSITIONS=113} [2021-10-28 23:09:42,996 INFO L334 CegarLoopForPetriNet]: 96 programPoint places, 12 predicate places. [2021-10-28 23:09:42,998 INFO L470 AbstractCegarLoop]: Abstraction has has 108 places, 113 transitions, 363 flow [2021-10-28 23:09:42,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 81.0) internal successors, (405), 5 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) [2021-10-28 23:09:42,999 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:09:42,999 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:09:42,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 23:09:42,999 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:09:43,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:09:43,004 INFO L85 PathProgramCache]: Analyzing trace with hash 392437266, now seen corresponding path program 1 times [2021-10-28 23:09:43,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:09:43,005 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052602884] [2021-10-28 23:09:43,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:09:43,005 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:09:43,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:09:43,152 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-28 23:09:43,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:09:43,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052602884] [2021-10-28 23:09:43,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052602884] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:09:43,153 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:09:43,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:09:43,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068638581] [2021-10-28 23:09:43,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:09:43,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:09:43,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:09:43,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:09:43,157 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 101 [2021-10-28 23:09:43,158 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 113 transitions, 363 flow. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:09:43,158 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:09:43,158 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 101 [2021-10-28 23:09:43,158 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:09:43,337 INFO L129 PetriNetUnfolder]: 69/553 cut-off events. [2021-10-28 23:09:43,337 INFO L130 PetriNetUnfolder]: For 246/253 co-relation queries the response was YES. [2021-10-28 23:09:43,345 INFO L84 FinitePrefix]: Finished finitePrefix Result has 876 conditions, 553 events. 69/553 cut-off events. For 246/253 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2224 event pairs, 1 based on Foata normal form. 10/548 useless extension candidates. Maximal degree in co-relation 819. Up to 70 conditions per place. [2021-10-28 23:09:43,349 INFO L132 encePairwiseOnDemand]: 95/101 looper letters, 13 selfloop transitions, 6 changer transitions 0/117 dead transitions. [2021-10-28 23:09:43,349 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 117 transitions, 403 flow [2021-10-28 23:09:43,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:09:43,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-28 23:09:43,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 264 transitions. [2021-10-28 23:09:43,359 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8712871287128713 [2021-10-28 23:09:43,359 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 264 transitions. [2021-10-28 23:09:43,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 264 transitions. [2021-10-28 23:09:43,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:09:43,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 264 transitions. [2021-10-28 23:09:43,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:09:43,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:09:43,373 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:09:43,374 INFO L186 Difference]: Start difference. First operand has 108 places, 113 transitions, 363 flow. Second operand 3 states and 264 transitions. [2021-10-28 23:09:43,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 117 transitions, 403 flow [2021-10-28 23:09:43,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 117 transitions, 395 flow, removed 4 selfloop flow, removed 0 redundant places. [2021-10-28 23:09:43,384 INFO L242 Difference]: Finished difference. Result has 111 places, 116 transitions, 381 flow [2021-10-28 23:09:43,385 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=381, PETRI_PLACES=111, PETRI_TRANSITIONS=116} [2021-10-28 23:09:43,385 INFO L334 CegarLoopForPetriNet]: 96 programPoint places, 15 predicate places. [2021-10-28 23:09:43,385 INFO L470 AbstractCegarLoop]: Abstraction has has 111 places, 116 transitions, 381 flow [2021-10-28 23:09:43,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:09:43,386 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:09:43,386 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:09:43,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 23:09:43,387 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:09:43,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:09:43,387 INFO L85 PathProgramCache]: Analyzing trace with hash -510881347, now seen corresponding path program 1 times [2021-10-28 23:09:43,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:09:43,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595917467] [2021-10-28 23:09:43,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:09:43,388 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:09:43,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:09:43,461 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:09:43,461 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:09:43,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595917467] [2021-10-28 23:09:43,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595917467] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:09:43,462 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:09:43,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:09:43,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862792674] [2021-10-28 23:09:43,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:09:43,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:09:43,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:09:43,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:09:43,465 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 101 [2021-10-28 23:09:43,466 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 116 transitions, 381 flow. Second operand has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:09:43,468 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:09:43,468 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 101 [2021-10-28 23:09:43,468 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:09:43,695 INFO L129 PetriNetUnfolder]: 85/635 cut-off events. [2021-10-28 23:09:43,696 INFO L130 PetriNetUnfolder]: For 377/383 co-relation queries the response was YES. [2021-10-28 23:09:43,699 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1143 conditions, 635 events. 85/635 cut-off events. For 377/383 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2852 event pairs, 9 based on Foata normal form. 4/614 useless extension candidates. Maximal degree in co-relation 1089. Up to 88 conditions per place. [2021-10-28 23:09:43,704 INFO L132 encePairwiseOnDemand]: 96/101 looper letters, 17 selfloop transitions, 10 changer transitions 0/118 dead transitions. [2021-10-28 23:09:43,705 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 118 transitions, 443 flow [2021-10-28 23:09:43,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:09:43,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-28 23:09:43,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 270 transitions. [2021-10-28 23:09:43,707 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8910891089108911 [2021-10-28 23:09:43,708 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 270 transitions. [2021-10-28 23:09:43,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 270 transitions. [2021-10-28 23:09:43,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:09:43,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 270 transitions. [2021-10-28 23:09:43,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:09:43,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:09:43,712 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:09:43,712 INFO L186 Difference]: Start difference. First operand has 111 places, 116 transitions, 381 flow. Second operand 3 states and 270 transitions. [2021-10-28 23:09:43,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 118 transitions, 443 flow [2021-10-28 23:09:43,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 118 transitions, 437 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-28 23:09:43,728 INFO L242 Difference]: Finished difference. Result has 113 places, 115 transitions, 403 flow [2021-10-28 23:09:43,729 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=371, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=403, PETRI_PLACES=113, PETRI_TRANSITIONS=115} [2021-10-28 23:09:43,729 INFO L334 CegarLoopForPetriNet]: 96 programPoint places, 17 predicate places. [2021-10-28 23:09:43,729 INFO L470 AbstractCegarLoop]: Abstraction has has 113 places, 115 transitions, 403 flow [2021-10-28 23:09:43,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:09:43,731 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:09:43,731 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:09:43,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 23:09:43,731 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:09:43,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:09:43,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1924482143, now seen corresponding path program 1 times [2021-10-28 23:09:43,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:09:43,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836741034] [2021-10-28 23:09:43,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:09:43,735 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:09:43,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:09:43,927 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:09:43,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:09:43,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836741034] [2021-10-28 23:09:43,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836741034] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:09:43,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24759536] [2021-10-28 23:09:43,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:09:43,931 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:09:43,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b9a8b-68d2-48fe-9d36-45e004d03a3d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:09:43,936 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b9a8b-68d2-48fe-9d36-45e004d03a3d/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:09:43,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b9a8b-68d2-48fe-9d36-45e004d03a3d/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 23:09:44,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:09:44,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 23:09:44,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:09:44,528 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-28 23:09:44,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24759536] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:09:44,529 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:09:44,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 8 [2021-10-28 23:09:44,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053918234] [2021-10-28 23:09:44,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:09:44,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:09:44,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:09:44,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:09:44,535 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 101 [2021-10-28 23:09:44,536 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 115 transitions, 403 flow. Second operand has 6 states, 6 states have (on average 82.16666666666667) internal successors, (493), 6 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:09:44,536 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:09:44,537 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 101 [2021-10-28 23:09:44,537 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:09:45,047 INFO L129 PetriNetUnfolder]: 365/1818 cut-off events. [2021-10-28 23:09:45,047 INFO L130 PetriNetUnfolder]: For 1941/1945 co-relation queries the response was YES. [2021-10-28 23:09:45,056 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3589 conditions, 1818 events. 365/1818 cut-off events. For 1941/1945 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 11428 event pairs, 77 based on Foata normal form. 26/1767 useless extension candidates. Maximal degree in co-relation 3533. Up to 312 conditions per place. [2021-10-28 23:09:45,066 INFO L132 encePairwiseOnDemand]: 91/101 looper letters, 55 selfloop transitions, 32 changer transitions 0/173 dead transitions. [2021-10-28 23:09:45,066 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 173 transitions, 881 flow [2021-10-28 23:09:45,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 23:09:45,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-28 23:09:45,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 935 transitions. [2021-10-28 23:09:45,071 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8415841584158416 [2021-10-28 23:09:45,072 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 935 transitions. [2021-10-28 23:09:45,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 935 transitions. [2021-10-28 23:09:45,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:09:45,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 935 transitions. [2021-10-28 23:09:45,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 85.0) internal successors, (935), 11 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:09:45,081 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 101.0) internal successors, (1212), 12 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:09:45,081 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 101.0) internal successors, (1212), 12 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:09:45,081 INFO L186 Difference]: Start difference. First operand has 113 places, 115 transitions, 403 flow. Second operand 11 states and 935 transitions. [2021-10-28 23:09:45,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 173 transitions, 881 flow [2021-10-28 23:09:45,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 173 transitions, 839 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-28 23:09:45,096 INFO L242 Difference]: Finished difference. Result has 129 places, 146 transitions, 705 flow [2021-10-28 23:09:45,100 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=705, PETRI_PLACES=129, PETRI_TRANSITIONS=146} [2021-10-28 23:09:45,100 INFO L334 CegarLoopForPetriNet]: 96 programPoint places, 33 predicate places. [2021-10-28 23:09:45,100 INFO L470 AbstractCegarLoop]: Abstraction has has 129 places, 146 transitions, 705 flow [2021-10-28 23:09:45,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 82.16666666666667) internal successors, (493), 6 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:09:45,101 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:09:45,101 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:09:45,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b9a8b-68d2-48fe-9d36-45e004d03a3d/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 23:09:45,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b9a8b-68d2-48fe-9d36-45e004d03a3d/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:09:45,316 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:09:45,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:09:45,317 INFO L85 PathProgramCache]: Analyzing trace with hash -2138098589, now seen corresponding path program 2 times [2021-10-28 23:09:45,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:09:45,317 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446390549] [2021-10-28 23:09:45,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:09:45,318 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:09:45,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:09:45,436 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-10-28 23:09:45,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:09:45,436 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446390549] [2021-10-28 23:09:45,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446390549] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:09:45,437 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:09:45,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 23:09:45,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597646695] [2021-10-28 23:09:45,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:09:45,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:09:45,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:09:45,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:09:45,443 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 101 [2021-10-28 23:09:45,444 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 146 transitions, 705 flow. Second operand has 7 states, 7 states have (on average 80.42857142857143) internal successors, (563), 7 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:09:45,444 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:09:45,444 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 101 [2021-10-28 23:09:45,445 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:09:46,291 INFO L129 PetriNetUnfolder]: 625/3239 cut-off events. [2021-10-28 23:09:46,291 INFO L130 PetriNetUnfolder]: For 5624/5767 co-relation queries the response was YES. [2021-10-28 23:09:46,309 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7746 conditions, 3239 events. 625/3239 cut-off events. For 5624/5767 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 26326 event pairs, 55 based on Foata normal form. 36/3145 useless extension candidates. Maximal degree in co-relation 7681. Up to 255 conditions per place. [2021-10-28 23:09:46,329 INFO L132 encePairwiseOnDemand]: 88/101 looper letters, 131 selfloop transitions, 92 changer transitions 3/309 dead transitions. [2021-10-28 23:09:46,329 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 309 transitions, 2403 flow [2021-10-28 23:09:46,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-28 23:09:46,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-10-28 23:09:46,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1675 transitions. [2021-10-28 23:09:46,336 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8292079207920792 [2021-10-28 23:09:46,336 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1675 transitions. [2021-10-28 23:09:46,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1675 transitions. [2021-10-28 23:09:46,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:09:46,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1675 transitions. [2021-10-28 23:09:46,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 83.75) internal successors, (1675), 20 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:09:46,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 101.0) internal successors, (2121), 21 states have internal predecessors, (2121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:09:46,352 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 101.0) internal successors, (2121), 21 states have internal predecessors, (2121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:09:46,352 INFO L186 Difference]: Start difference. First operand has 129 places, 146 transitions, 705 flow. Second operand 20 states and 1675 transitions. [2021-10-28 23:09:46,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 309 transitions, 2403 flow [2021-10-28 23:09:46,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 309 transitions, 2285 flow, removed 59 selfloop flow, removed 0 redundant places. [2021-10-28 23:09:46,379 INFO L242 Difference]: Finished difference. Result has 159 places, 234 transitions, 1764 flow [2021-10-28 23:09:46,379 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=647, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1764, PETRI_PLACES=159, PETRI_TRANSITIONS=234} [2021-10-28 23:09:46,380 INFO L334 CegarLoopForPetriNet]: 96 programPoint places, 63 predicate places. [2021-10-28 23:09:46,380 INFO L470 AbstractCegarLoop]: Abstraction has has 159 places, 234 transitions, 1764 flow [2021-10-28 23:09:46,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 80.42857142857143) internal successors, (563), 7 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:09:46,380 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:09:46,381 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:09:46,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 23:09:46,381 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:09:46,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:09:46,382 INFO L85 PathProgramCache]: Analyzing trace with hash -512786423, now seen corresponding path program 3 times [2021-10-28 23:09:46,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:09:46,382 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986335277] [2021-10-28 23:09:46,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:09:46,390 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:09:46,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:09:46,530 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-10-28 23:09:46,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:09:46,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986335277] [2021-10-28 23:09:46,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986335277] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:09:46,531 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:09:46,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 23:09:46,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264571692] [2021-10-28 23:09:46,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:09:46,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:09:46,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:09:46,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:09:46,535 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 101 [2021-10-28 23:09:46,535 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 234 transitions, 1764 flow. Second operand has 7 states, 7 states have (on average 80.14285714285714) internal successors, (561), 7 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:09:46,536 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:09:46,536 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 101 [2021-10-28 23:09:46,536 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:09:48,363 INFO L129 PetriNetUnfolder]: 1173/5862 cut-off events. [2021-10-28 23:09:48,363 INFO L130 PetriNetUnfolder]: For 22482/22878 co-relation queries the response was YES. [2021-10-28 23:09:48,421 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17483 conditions, 5862 events. 1173/5862 cut-off events. For 22482/22878 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 52929 event pairs, 115 based on Foata normal form. 103/5719 useless extension candidates. Maximal degree in co-relation 17407. Up to 540 conditions per place. [2021-10-28 23:09:48,432 INFO L132 encePairwiseOnDemand]: 88/101 looper letters, 0 selfloop transitions, 0 changer transitions 654/654 dead transitions. [2021-10-28 23:09:48,432 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 654 transitions, 7412 flow [2021-10-28 23:09:48,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-28 23:09:48,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-10-28 23:09:48,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2082 transitions. [2021-10-28 23:09:48,443 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8245544554455445 [2021-10-28 23:09:48,443 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2082 transitions. [2021-10-28 23:09:48,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2082 transitions. [2021-10-28 23:09:48,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:09:48,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2082 transitions. [2021-10-28 23:09:48,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 83.28) internal successors, (2082), 25 states have internal predecessors, (2082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:09:48,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 101.0) internal successors, (2626), 26 states have internal predecessors, (2626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:09:48,466 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 101.0) internal successors, (2626), 26 states have internal predecessors, (2626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:09:48,467 INFO L186 Difference]: Start difference. First operand has 159 places, 234 transitions, 1764 flow. Second operand 25 states and 2082 transitions. [2021-10-28 23:09:48,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 654 transitions, 7412 flow [2021-10-28 23:09:48,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 654 transitions, 6714 flow, removed 258 selfloop flow, removed 2 redundant places. [2021-10-28 23:09:48,634 INFO L242 Difference]: Finished difference. Result has 178 places, 0 transitions, 0 flow [2021-10-28 23:09:48,635 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=1507, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=0, PETRI_PLACES=178, PETRI_TRANSITIONS=0} [2021-10-28 23:09:48,635 INFO L334 CegarLoopForPetriNet]: 96 programPoint places, 82 predicate places. [2021-10-28 23:09:48,635 INFO L470 AbstractCegarLoop]: Abstraction has has 178 places, 0 transitions, 0 flow [2021-10-28 23:09:48,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 80.14285714285714) internal successors, (561), 7 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:09:48,639 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-28 23:09:48,639 INFO L764 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:09:48,640 INFO L764 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:09:48,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 23:09:48,646 INFO L731 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1] [2021-10-28 23:09:48,650 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-28 23:09:48,650 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:09:48,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:09:48 BasicIcfg [2021-10-28 23:09:48,656 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:09:48,657 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:09:48,657 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:09:48,657 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:09:48,658 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:09:41" (3/4) ... [2021-10-28 23:09:48,661 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 23:09:48,669 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure worker [2021-10-28 23:09:48,677 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-10-28 23:09:48,677 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 23:09:48,677 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-28 23:09:48,678 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 23:09:48,722 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b9a8b-68d2-48fe-9d36-45e004d03a3d/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:09:48,722 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:09:48,723 INFO L168 Benchmark]: Toolchain (without parser) took 8327.12 ms. Allocated memory was 83.9 MB in the beginning and 308.3 MB in the end (delta: 224.4 MB). Free memory was 47.0 MB in the beginning and 132.6 MB in the end (delta: -85.6 MB). Peak memory consumption was 138.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:09:48,724 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 83.9 MB. Free memory was 55.8 MB in the beginning and 55.8 MB in the end (delta: 28.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:09:48,725 INFO L168 Benchmark]: CACSL2BoogieTranslator took 590.96 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 46.8 MB in the beginning and 64.9 MB in the end (delta: -18.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:09:48,734 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.17 ms. Allocated memory is still 100.7 MB. Free memory was 64.9 MB in the beginning and 62.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:09:48,734 INFO L168 Benchmark]: Boogie Preprocessor took 28.63 ms. Allocated memory is still 100.7 MB. Free memory was 62.7 MB in the beginning and 61.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:09:48,735 INFO L168 Benchmark]: RCFGBuilder took 490.01 ms. Allocated memory is still 100.7 MB. Free memory was 61.2 MB in the beginning and 48.5 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 23:09:48,735 INFO L168 Benchmark]: TraceAbstraction took 7086.55 ms. Allocated memory was 100.7 MB in the beginning and 308.3 MB in the end (delta: 207.6 MB). Free memory was 48.0 MB in the beginning and 134.7 MB in the end (delta: -86.7 MB). Peak memory consumption was 126.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:09:48,736 INFO L168 Benchmark]: Witness Printer took 64.97 ms. Allocated memory is still 308.3 MB. Free memory was 134.7 MB in the beginning and 132.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:09:48,739 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 83.9 MB. Free memory was 55.8 MB in the beginning and 55.8 MB in the end (delta: 28.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 590.96 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 46.8 MB in the beginning and 64.9 MB in the end (delta: -18.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 55.17 ms. Allocated memory is still 100.7 MB. Free memory was 64.9 MB in the beginning and 62.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.63 ms. Allocated memory is still 100.7 MB. Free memory was 62.7 MB in the beginning and 61.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 490.01 ms. Allocated memory is still 100.7 MB. Free memory was 61.2 MB in the beginning and 48.5 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7086.55 ms. Allocated memory was 100.7 MB in the beginning and 308.3 MB in the end (delta: 207.6 MB). Free memory was 48.0 MB in the beginning and 134.7 MB in the end (delta: -86.7 MB). Peak memory consumption was 126.1 MB. Max. memory is 16.1 GB. * Witness Printer took 64.97 ms. Allocated memory is still 308.3 MB. Free memory was 134.7 MB in the beginning and 132.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s 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: 13]: 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, 127 locations, 3 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: 6.8s, OverallIterations: 7, TraceHistogramMax: 3, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 4.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 145 SDtfs, 295 SDslu, 238 SDs, 0 SdLazy, 493 SolverSat, 54 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 192 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1764occurred in iteration=6, InterpolantAutomatonStates: 74, 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, 1.2s InterpolantComputationTime, 714 NumberOfCodeBlocks, 714 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 706 ConstructedInterpolants, 0 QuantifiedInterpolants, 1178 SizeOfPredicates, 4 NumberOfNonLiveVariables, 221 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 8 InterpolantComputations, 7 PerfectInterpolantSequences, 137/143 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-28 23:09:48,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10b9a8b-68d2-48fe-9d36-45e004d03a3d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...