./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-divine/condvar.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14421f5f-cb08-4c75-9531-c1edddada146/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14421f5f-cb08-4c75-9531-c1edddada146/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14421f5f-cb08-4c75-9531-c1edddada146/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14421f5f-cb08-4c75-9531-c1edddada146/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-divine/condvar.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14421f5f-cb08-4c75-9531-c1edddada146/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14421f5f-cb08-4c75-9531-c1edddada146/bin/uautomizer-DrprNOufMa --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 08550a9d023a2de1ac334a3445fa7327c26092d061f764efe50453540d837a7a --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 19:22:06,073 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 19:22:06,075 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 19:22:06,098 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 19:22:06,099 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 19:22:06,100 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 19:22:06,101 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 19:22:06,103 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 19:22:06,104 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 19:22:06,105 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 19:22:06,106 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 19:22:06,107 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 19:22:06,107 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 19:22:06,108 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 19:22:06,109 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 19:22:06,111 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 19:22:06,111 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 19:22:06,112 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 19:22:06,114 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 19:22:06,116 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 19:22:06,117 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 19:22:06,119 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 19:22:06,120 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 19:22:06,120 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 19:22:06,123 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 19:22:06,123 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 19:22:06,124 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 19:22:06,124 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 19:22:06,125 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 19:22:06,126 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 19:22:06,126 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 19:22:06,127 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 19:22:06,127 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 19:22:06,128 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 19:22:06,129 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 19:22:06,129 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 19:22:06,130 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 19:22:06,130 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 19:22:06,130 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 19:22:06,130 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 19:22:06,131 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 19:22:06,132 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14421f5f-cb08-4c75-9531-c1edddada146/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 19:22:06,149 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 19:22:06,149 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 19:22:06,149 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 19:22:06,149 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 19:22:06,150 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 19:22:06,150 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 19:22:06,151 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 19:22:06,151 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 19:22:06,151 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 19:22:06,151 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 19:22:06,151 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 19:22:06,151 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 19:22:06,152 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 19:22:06,152 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 19:22:06,152 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 19:22:06,152 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 19:22:06,152 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 19:22:06,152 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 19:22:06,152 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 19:22:06,153 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 19:22:06,153 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 19:22:06,153 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 19:22:06,153 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 19:22:06,153 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 19:22:06,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:22:06,154 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 19:22:06,154 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 19:22:06,154 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 19:22:06,154 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 19:22:06,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 19:22:06,154 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 19:22:06,154 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 19:22:06,154 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 19:22:06,155 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 19:22:06,155 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_14421f5f-cb08-4c75-9531-c1edddada146/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14421f5f-cb08-4c75-9531-c1edddada146/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 08550a9d023a2de1ac334a3445fa7327c26092d061f764efe50453540d837a7a [2021-12-06 19:22:06,340 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 19:22:06,357 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 19:22:06,359 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 19:22:06,359 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 19:22:06,360 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 19:22:06,361 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14421f5f-cb08-4c75-9531-c1edddada146/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/pthread-divine/condvar.i [2021-12-06 19:22:06,401 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14421f5f-cb08-4c75-9531-c1edddada146/bin/uautomizer-DrprNOufMa/data/fcc635414/763fd1dfde7c4c85bf2e3cff97962a1f/FLAG6b91f3914 [2021-12-06 19:22:06,836 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 19:22:06,837 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14421f5f-cb08-4c75-9531-c1edddada146/sv-benchmarks/c/pthread-divine/condvar.i [2021-12-06 19:22:06,846 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14421f5f-cb08-4c75-9531-c1edddada146/bin/uautomizer-DrprNOufMa/data/fcc635414/763fd1dfde7c4c85bf2e3cff97962a1f/FLAG6b91f3914 [2021-12-06 19:22:07,176 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14421f5f-cb08-4c75-9531-c1edddada146/bin/uautomizer-DrprNOufMa/data/fcc635414/763fd1dfde7c4c85bf2e3cff97962a1f [2021-12-06 19:22:07,178 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 19:22:07,179 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 19:22:07,180 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 19:22:07,180 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 19:22:07,183 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 19:22:07,183 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:22:07" (1/1) ... [2021-12-06 19:22:07,184 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c110e4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:22:07, skipping insertion in model container [2021-12-06 19:22:07,184 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:22:07" (1/1) ... [2021-12-06 19:22:07,189 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 19:22:07,216 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 19:22:07,320 WARN L610 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-12-06 19:22:07,449 WARN L230 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_14421f5f-cb08-4c75-9531-c1edddada146/sv-benchmarks/c/pthread-divine/condvar.i[30458,30471] [2021-12-06 19:22:07,457 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:22:07,469 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 19:22:07,481 WARN L610 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-12-06 19:22:07,504 WARN L230 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_14421f5f-cb08-4c75-9531-c1edddada146/sv-benchmarks/c/pthread-divine/condvar.i[30458,30471] [2021-12-06 19:22:07,508 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:22:07,548 INFO L208 MainTranslator]: Completed translation [2021-12-06 19:22:07,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:22:07 WrapperNode [2021-12-06 19:22:07,549 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 19:22:07,550 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 19:22:07,550 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 19:22:07,550 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 19:22:07,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:22:07" (1/1) ... [2021-12-06 19:22:07,572 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:22:07" (1/1) ... [2021-12-06 19:22:07,590 INFO L137 Inliner]: procedures = 169, calls = 35, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 56 [2021-12-06 19:22:07,590 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 19:22:07,591 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 19:22:07,591 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 19:22:07,591 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 19:22:07,597 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:22:07" (1/1) ... [2021-12-06 19:22:07,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:22:07" (1/1) ... [2021-12-06 19:22:07,599 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:22:07" (1/1) ... [2021-12-06 19:22:07,600 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:22:07" (1/1) ... [2021-12-06 19:22:07,603 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:22:07" (1/1) ... [2021-12-06 19:22:07,606 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:22:07" (1/1) ... [2021-12-06 19:22:07,608 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:22:07" (1/1) ... [2021-12-06 19:22:07,610 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 19:22:07,610 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 19:22:07,610 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 19:22:07,611 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 19:22:07,611 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:22:07" (1/1) ... [2021-12-06 19:22:07,618 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:22:07,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14421f5f-cb08-4c75-9531-c1edddada146/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:22:07,642 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14421f5f-cb08-4c75-9531-c1edddada146/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 19:22:07,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14421f5f-cb08-4c75-9531-c1edddada146/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 19:22:07,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 19:22:07,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 19:22:07,673 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-12-06 19:22:07,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 19:22:07,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 19:22:07,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 19:22:07,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 19:22:07,674 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2021-12-06 19:22:07,674 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2021-12-06 19:22:07,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 19:22:07,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 19:22:07,676 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-06 19:22:07,760 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 19:22:07,761 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 19:22:07,881 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 19:22:07,888 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 19:22:07,888 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-06 19:22:07,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:22:07 BoogieIcfgContainer [2021-12-06 19:22:07,890 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 19:22:07,892 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 19:22:07,892 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 19:22:07,895 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 19:22:07,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 07:22:07" (1/3) ... [2021-12-06 19:22:07,896 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@433f0264 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:22:07, skipping insertion in model container [2021-12-06 19:22:07,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:22:07" (2/3) ... [2021-12-06 19:22:07,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@433f0264 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:22:07, skipping insertion in model container [2021-12-06 19:22:07,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:22:07" (3/3) ... [2021-12-06 19:22:07,898 INFO L111 eAbstractionObserver]: Analyzing ICFG condvar.i [2021-12-06 19:22:07,904 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-06 19:22:07,904 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 19:22:07,904 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 19:22:07,904 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-06 19:22:07,931 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:22:07,931 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:22:07,931 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:22:07,931 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:22:07,932 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:22:07,932 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:22:07,932 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:22:07,932 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:22:07,932 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:22:07,933 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:22:07,933 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:22:07,933 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:22:07,934 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:22:07,935 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:22:07,935 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:22:07,935 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:22:07,935 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:22:07,935 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:22:07,936 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:22:07,936 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:22:07,939 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:22:07,939 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:22:07,940 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:22:07,940 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:22:07,940 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:22:07,940 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:22:07,945 INFO L148 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-12-06 19:22:07,980 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 19:22:07,986 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 [2021-12-06 19:22:07,986 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-12-06 19:22:07,995 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 77 places, 78 transitions, 164 flow [2021-12-06 19:22:08,030 INFO L129 PetriNetUnfolder]: 5/77 cut-off events. [2021-12-06 19:22:08,030 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-12-06 19:22:08,032 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 77 events. 5/77 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 62 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 28. Up to 2 conditions per place. [2021-12-06 19:22:08,033 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 78 transitions, 164 flow [2021-12-06 19:22:08,037 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 70 transitions, 143 flow [2021-12-06 19:22:08,060 INFO L129 PetriNetUnfolder]: 3/63 cut-off events. [2021-12-06 19:22:08,060 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-06 19:22:08,061 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 19:22:08,061 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:22:08,062 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting threadErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:22:08,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:22:08,067 INFO L85 PathProgramCache]: Analyzing trace with hash 533595711, now seen corresponding path program 1 times [2021-12-06 19:22:08,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:22:08,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876134282] [2021-12-06 19:22:08,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:22:08,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:22:08,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:22:08,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:22:08,320 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:22:08,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876134282] [2021-12-06 19:22:08,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876134282] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:22:08,321 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:22:08,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 19:22:08,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930002660] [2021-12-06 19:22:08,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:22:08,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 19:22:08,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:22:08,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 19:22:08,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:22:08,354 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 78 [2021-12-06 19:22:08,357 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 70 transitions, 143 flow. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 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) [2021-12-06 19:22:08,357 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 19:22:08,357 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 78 [2021-12-06 19:22:08,358 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 19:22:08,387 INFO L129 PetriNetUnfolder]: 3/70 cut-off events. [2021-12-06 19:22:08,387 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-12-06 19:22:08,388 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 70 events. 3/70 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 48 event pairs, 0 based on Foata normal form. 3/70 useless extension candidates. Maximal degree in co-relation 33. Up to 5 conditions per place. [2021-12-06 19:22:08,389 INFO L132 encePairwiseOnDemand]: 72/78 looper letters, 4 selfloop transitions, 2 changer transitions 4/68 dead transitions. [2021-12-06 19:22:08,389 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 68 transitions, 151 flow [2021-12-06 19:22:08,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 19:22:08,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-06 19:22:08,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 218 transitions. [2021-12-06 19:22:08,402 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9316239316239316 [2021-12-06 19:22:08,403 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 218 transitions. [2021-12-06 19:22:08,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 218 transitions. [2021-12-06 19:22:08,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 19:22:08,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 218 transitions. [2021-12-06 19:22:08,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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) [2021-12-06 19:22:08,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 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) [2021-12-06 19:22:08,414 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 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) [2021-12-06 19:22:08,416 INFO L186 Difference]: Start difference. First operand has 69 places, 70 transitions, 143 flow. Second operand 3 states and 218 transitions. [2021-12-06 19:22:08,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 68 transitions, 151 flow [2021-12-06 19:22:08,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 68 transitions, 150 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-06 19:22:08,421 INFO L242 Difference]: Finished difference. Result has 71 places, 63 transitions, 136 flow [2021-12-06 19:22:08,423 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=71, PETRI_TRANSITIONS=63} [2021-12-06 19:22:08,425 INFO L334 CegarLoopForPetriNet]: 69 programPoint places, 2 predicate places. [2021-12-06 19:22:08,425 INFO L470 AbstractCegarLoop]: Abstraction has has 71 places, 63 transitions, 136 flow [2021-12-06 19:22:08,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 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) [2021-12-06 19:22:08,426 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 19:22:08,426 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:22:08,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 19:22:08,426 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting threadErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:22:08,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:22:08,427 INFO L85 PathProgramCache]: Analyzing trace with hash 986944085, now seen corresponding path program 1 times [2021-12-06 19:22:08,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:22:08,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275932658] [2021-12-06 19:22:08,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:22:08,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:22:08,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:22:08,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:22:08,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:22:08,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275932658] [2021-12-06 19:22:08,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275932658] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:22:08,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:22:08,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 19:22:08,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259932889] [2021-12-06 19:22:08,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:22:08,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 19:22:08,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:22:08,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 19:22:08,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:22:08,489 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 78 [2021-12-06 19:22:08,490 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 63 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 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) [2021-12-06 19:22:08,490 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 19:22:08,490 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 78 [2021-12-06 19:22:08,490 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 19:22:08,512 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2021-12-06 19:22:08,512 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-12-06 19:22:08,512 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 67 events. 2/67 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 22 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 43. Up to 9 conditions per place. [2021-12-06 19:22:08,513 INFO L132 encePairwiseOnDemand]: 75/78 looper letters, 10 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2021-12-06 19:22:08,513 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 67 transitions, 168 flow [2021-12-06 19:22:08,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 19:22:08,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-06 19:22:08,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 211 transitions. [2021-12-06 19:22:08,516 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9017094017094017 [2021-12-06 19:22:08,516 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 211 transitions. [2021-12-06 19:22:08,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 211 transitions. [2021-12-06 19:22:08,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 19:22:08,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 211 transitions. [2021-12-06 19:22:08,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 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) [2021-12-06 19:22:08,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 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) [2021-12-06 19:22:08,520 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 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) [2021-12-06 19:22:08,520 INFO L186 Difference]: Start difference. First operand has 71 places, 63 transitions, 136 flow. Second operand 3 states and 211 transitions. [2021-12-06 19:22:08,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 67 transitions, 168 flow [2021-12-06 19:22:08,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 67 transitions, 164 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-12-06 19:22:08,522 INFO L242 Difference]: Finished difference. Result has 68 places, 64 transitions, 144 flow [2021-12-06 19:22:08,523 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=68, PETRI_TRANSITIONS=64} [2021-12-06 19:22:08,523 INFO L334 CegarLoopForPetriNet]: 69 programPoint places, -1 predicate places. [2021-12-06 19:22:08,523 INFO L470 AbstractCegarLoop]: Abstraction has has 68 places, 64 transitions, 144 flow [2021-12-06 19:22:08,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 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) [2021-12-06 19:22:08,524 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 19:22:08,524 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] [2021-12-06 19:22:08,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 19:22:08,524 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting threadErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:22:08,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:22:08,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1983761035, now seen corresponding path program 1 times [2021-12-06 19:22:08,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:22:08,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906689118] [2021-12-06 19:22:08,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:22:08,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:22:08,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:22:08,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:22:08,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:22:08,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906689118] [2021-12-06 19:22:08,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906689118] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:22:08,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712874652] [2021-12-06 19:22:08,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:22:08,590 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:22:08,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14421f5f-cb08-4c75-9531-c1edddada146/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:22:08,591 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14421f5f-cb08-4c75-9531-c1edddada146/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:22:08,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14421f5f-cb08-4c75-9531-c1edddada146/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 19:22:08,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:22:08,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 19:22:08,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:22:08,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:22:08,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:22:08,815 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:22:08,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712874652] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:22:08,815 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:22:08,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2021-12-06 19:22:08,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838844562] [2021-12-06 19:22:08,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:22:08,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 19:22:08,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:22:08,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 19:22:08,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-06 19:22:08,819 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 78 [2021-12-06 19:22:08,820 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 64 transitions, 144 flow. Second operand has 10 states, 10 states have (on average 67.1) internal successors, (671), 10 states have internal predecessors, (671), 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) [2021-12-06 19:22:08,820 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 19:22:08,820 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 78 [2021-12-06 19:22:08,820 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 19:22:08,871 INFO L129 PetriNetUnfolder]: 2/74 cut-off events. [2021-12-06 19:22:08,872 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-12-06 19:22:08,872 INFO L84 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 74 events. 2/74 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 15 event pairs, 0 based on Foata normal form. 2/76 useless extension candidates. Maximal degree in co-relation 58. Up to 6 conditions per place. [2021-12-06 19:22:08,873 INFO L132 encePairwiseOnDemand]: 72/78 looper letters, 11 selfloop transitions, 9 changer transitions 0/74 dead transitions. [2021-12-06 19:22:08,873 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 74 transitions, 206 flow [2021-12-06 19:22:08,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 19:22:08,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-06 19:22:08,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 607 transitions. [2021-12-06 19:22:08,876 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8646723646723646 [2021-12-06 19:22:08,876 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 607 transitions. [2021-12-06 19:22:08,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 607 transitions. [2021-12-06 19:22:08,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 19:22:08,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 607 transitions. [2021-12-06 19:22:08,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 67.44444444444444) internal successors, (607), 9 states have internal predecessors, (607), 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) [2021-12-06 19:22:08,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 78.0) internal successors, (780), 10 states have internal predecessors, (780), 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) [2021-12-06 19:22:08,881 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 78.0) internal successors, (780), 10 states have internal predecessors, (780), 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) [2021-12-06 19:22:08,881 INFO L186 Difference]: Start difference. First operand has 68 places, 64 transitions, 144 flow. Second operand 9 states and 607 transitions. [2021-12-06 19:22:08,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 74 transitions, 206 flow [2021-12-06 19:22:08,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 74 transitions, 204 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-06 19:22:08,883 INFO L242 Difference]: Finished difference. Result has 78 places, 70 transitions, 192 flow [2021-12-06 19:22:08,884 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=192, PETRI_PLACES=78, PETRI_TRANSITIONS=70} [2021-12-06 19:22:08,884 INFO L334 CegarLoopForPetriNet]: 69 programPoint places, 9 predicate places. [2021-12-06 19:22:08,884 INFO L470 AbstractCegarLoop]: Abstraction has has 78 places, 70 transitions, 192 flow [2021-12-06 19:22:08,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 67.1) internal successors, (671), 10 states have internal predecessors, (671), 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) [2021-12-06 19:22:08,885 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 19:22:08,885 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:22:08,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14421f5f-cb08-4c75-9531-c1edddada146/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 19:22:09,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14421f5f-cb08-4c75-9531-c1edddada146/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:22:09,087 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting threadErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:22:09,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:22:09,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1097801271, now seen corresponding path program 2 times [2021-12-06 19:22:09,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:22:09,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985934106] [2021-12-06 19:22:09,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:22:09,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:22:09,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:22:09,273 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:22:09,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:22:09,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985934106] [2021-12-06 19:22:09,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985934106] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:22:09,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629526789] [2021-12-06 19:22:09,275 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 19:22:09,275 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:22:09,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14421f5f-cb08-4c75-9531-c1edddada146/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:22:09,276 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14421f5f-cb08-4c75-9531-c1edddada146/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:22:09,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14421f5f-cb08-4c75-9531-c1edddada146/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 19:22:09,333 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 19:22:09,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:22:09,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 19:22:09,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:22:09,430 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:22:09,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:22:09,535 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:22:09,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629526789] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:22:09,536 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:22:09,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2021-12-06 19:22:09,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34809649] [2021-12-06 19:22:09,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:22:09,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-06 19:22:09,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:22:09,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-06 19:22:09,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2021-12-06 19:22:09,541 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 78 [2021-12-06 19:22:09,543 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 70 transitions, 192 flow. Second operand has 18 states, 18 states have (on average 67.27777777777777) internal successors, (1211), 18 states have internal predecessors, (1211), 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) [2021-12-06 19:22:09,543 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 19:22:09,543 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 78 [2021-12-06 19:22:09,543 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 19:22:09,667 INFO L129 PetriNetUnfolder]: 2/94 cut-off events. [2021-12-06 19:22:09,667 INFO L130 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2021-12-06 19:22:09,668 INFO L84 FinitePrefix]: Finished finitePrefix Result has 198 conditions, 94 events. 2/94 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 15 event pairs, 0 based on Foata normal form. 4/98 useless extension candidates. Maximal degree in co-relation 145. Up to 11 conditions per place. [2021-12-06 19:22:09,669 INFO L132 encePairwiseOnDemand]: 72/78 looper letters, 19 selfloop transitions, 21 changer transitions 0/94 dead transitions. [2021-12-06 19:22:09,669 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 94 transitions, 380 flow [2021-12-06 19:22:09,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 19:22:09,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-12-06 19:22:09,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1409 transitions. [2021-12-06 19:22:09,673 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8601953601953602 [2021-12-06 19:22:09,673 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1409 transitions. [2021-12-06 19:22:09,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1409 transitions. [2021-12-06 19:22:09,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 19:22:09,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1409 transitions. [2021-12-06 19:22:09,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 67.0952380952381) internal successors, (1409), 21 states have internal predecessors, (1409), 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) [2021-12-06 19:22:09,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 78.0) internal successors, (1716), 22 states have internal predecessors, (1716), 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) [2021-12-06 19:22:09,685 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 78.0) internal successors, (1716), 22 states have internal predecessors, (1716), 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) [2021-12-06 19:22:09,685 INFO L186 Difference]: Start difference. First operand has 78 places, 70 transitions, 192 flow. Second operand 21 states and 1409 transitions. [2021-12-06 19:22:09,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 94 transitions, 380 flow [2021-12-06 19:22:09,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 94 transitions, 366 flow, removed 6 selfloop flow, removed 1 redundant places. [2021-12-06 19:22:09,690 INFO L242 Difference]: Finished difference. Result has 102 places, 83 transitions, 316 flow [2021-12-06 19:22:09,691 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=316, PETRI_PLACES=102, PETRI_TRANSITIONS=83} [2021-12-06 19:22:09,692 INFO L334 CegarLoopForPetriNet]: 69 programPoint places, 33 predicate places. [2021-12-06 19:22:09,692 INFO L470 AbstractCegarLoop]: Abstraction has has 102 places, 83 transitions, 316 flow [2021-12-06 19:22:09,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 67.27777777777777) internal successors, (1211), 18 states have internal predecessors, (1211), 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) [2021-12-06 19:22:09,693 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 19:22:09,693 INFO L254 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:22:09,713 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14421f5f-cb08-4c75-9531-c1edddada146/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 19:22:09,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14421f5f-cb08-4c75-9531-c1edddada146/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:22:09,895 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting threadErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:22:09,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:22:09,897 INFO L85 PathProgramCache]: Analyzing trace with hash -468461195, now seen corresponding path program 3 times [2021-12-06 19:22:09,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:22:09,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262673626] [2021-12-06 19:22:09,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:22:09,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:22:09,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:22:10,133 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:22:10,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:22:10,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262673626] [2021-12-06 19:22:10,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262673626] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:22:10,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268051592] [2021-12-06 19:22:10,134 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 19:22:10,134 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:22:10,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14421f5f-cb08-4c75-9531-c1edddada146/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:22:10,135 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14421f5f-cb08-4c75-9531-c1edddada146/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:22:10,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14421f5f-cb08-4c75-9531-c1edddada146/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 19:22:10,180 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-06 19:22:10,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:22:10,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 19:22:10,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:22:10,325 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-12-06 19:22:10,325 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:22:10,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268051592] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:22:10,326 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 19:22:10,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [17] total 22 [2021-12-06 19:22:10,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633009544] [2021-12-06 19:22:10,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:22:10,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:22:10,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:22:10,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:22:10,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2021-12-06 19:22:10,328 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 78 [2021-12-06 19:22:10,329 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 83 transitions, 316 flow. Second operand has 7 states, 7 states have (on average 64.28571428571429) internal successors, (450), 7 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:10,329 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 19:22:10,329 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 78 [2021-12-06 19:22:10,329 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 19:22:10,403 INFO L129 PetriNetUnfolder]: 2/92 cut-off events. [2021-12-06 19:22:10,404 INFO L130 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2021-12-06 19:22:10,404 INFO L84 FinitePrefix]: Finished finitePrefix Result has 232 conditions, 92 events. 2/92 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 15 event pairs, 0 based on Foata normal form. 1/93 useless extension candidates. Maximal degree in co-relation 175. Up to 11 conditions per place. [2021-12-06 19:22:10,405 INFO L132 encePairwiseOnDemand]: 70/78 looper letters, 0 selfloop transitions, 0 changer transitions 83/83 dead transitions. [2021-12-06 19:22:10,405 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 83 transitions, 382 flow [2021-12-06 19:22:10,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 19:22:10,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-06 19:22:10,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 571 transitions. [2021-12-06 19:22:10,406 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8133903133903134 [2021-12-06 19:22:10,407 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 571 transitions. [2021-12-06 19:22:10,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 571 transitions. [2021-12-06 19:22:10,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 19:22:10,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 571 transitions. [2021-12-06 19:22:10,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 63.44444444444444) internal successors, (571), 9 states have internal predecessors, (571), 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) [2021-12-06 19:22:10,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 78.0) internal successors, (780), 10 states have internal predecessors, (780), 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) [2021-12-06 19:22:10,410 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 78.0) internal successors, (780), 10 states have internal predecessors, (780), 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) [2021-12-06 19:22:10,410 INFO L186 Difference]: Start difference. First operand has 102 places, 83 transitions, 316 flow. Second operand 9 states and 571 transitions. [2021-12-06 19:22:10,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 83 transitions, 382 flow [2021-12-06 19:22:10,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 83 transitions, 358 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-12-06 19:22:10,414 INFO L242 Difference]: Finished difference. Result has 102 places, 0 transitions, 0 flow [2021-12-06 19:22:10,414 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=102, PETRI_TRANSITIONS=0} [2021-12-06 19:22:10,415 INFO L334 CegarLoopForPetriNet]: 69 programPoint places, 33 predicate places. [2021-12-06 19:22:10,415 INFO L470 AbstractCegarLoop]: Abstraction has has 102 places, 0 transitions, 0 flow [2021-12-06 19:22:10,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 64.28571428571429) internal successors, (450), 7 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:10,417 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 3 remaining) [2021-12-06 19:22:10,417 INFO L764 garLoopResultBuilder]: Registering result SAFE for location threadErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2021-12-06 19:22:10,417 INFO L764 garLoopResultBuilder]: Registering result SAFE for location threadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2021-12-06 19:22:10,439 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14421f5f-cb08-4c75-9531-c1edddada146/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 19:22:10,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14421f5f-cb08-4c75-9531-c1edddada146/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:22:10,629 INFO L732 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2021-12-06 19:22:10,640 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-12-06 19:22:10,641 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 19:22:10,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 07:22:10 BasicIcfg [2021-12-06 19:22:10,652 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 19:22:10,653 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 19:22:10,653 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 19:22:10,654 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 19:22:10,654 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:22:07" (3/4) ... [2021-12-06 19:22:10,658 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-06 19:22:10,665 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread [2021-12-06 19:22:10,669 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-12-06 19:22:10,669 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-12-06 19:22:10,669 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-12-06 19:22:10,669 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-06 19:22:10,693 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14421f5f-cb08-4c75-9531-c1edddada146/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-06 19:22:10,694 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 19:22:10,694 INFO L158 Benchmark]: Toolchain (without parser) took 3515.03ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 77.1MB in the beginning and 46.4MB in the end (delta: 30.7MB). Peak memory consumption was 51.7MB. Max. memory is 16.1GB. [2021-12-06 19:22:10,694 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 79.7MB. Free memory is still 57.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 19:22:10,695 INFO L158 Benchmark]: CACSL2BoogieTranslator took 368.75ms. Allocated memory is still 98.6MB. Free memory was 77.1MB in the beginning and 65.3MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-06 19:22:10,695 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.46ms. Allocated memory is still 98.6MB. Free memory was 65.3MB in the beginning and 63.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 19:22:10,696 INFO L158 Benchmark]: Boogie Preprocessor took 19.06ms. Allocated memory is still 98.6MB. Free memory was 63.3MB in the beginning and 61.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 19:22:10,696 INFO L158 Benchmark]: RCFGBuilder took 279.97ms. Allocated memory is still 98.6MB. Free memory was 61.6MB in the beginning and 49.7MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-06 19:22:10,696 INFO L158 Benchmark]: TraceAbstraction took 2760.14ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 49.3MB in the beginning and 49.4MB in the end (delta: -87.6kB). Peak memory consumption was 22.1MB. Max. memory is 16.1GB. [2021-12-06 19:22:10,697 INFO L158 Benchmark]: Witness Printer took 40.62ms. Allocated memory is still 119.5MB. Free memory was 49.4MB in the beginning and 46.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-06 19:22:10,698 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 79.7MB. Free memory is still 57.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 368.75ms. Allocated memory is still 98.6MB. Free memory was 77.1MB in the beginning and 65.3MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.46ms. Allocated memory is still 98.6MB. Free memory was 65.3MB in the beginning and 63.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.06ms. Allocated memory is still 98.6MB. Free memory was 63.3MB in the beginning and 61.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 279.97ms. Allocated memory is still 98.6MB. Free memory was 61.6MB in the beginning and 49.7MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 2760.14ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 49.3MB in the beginning and 49.4MB in the end (delta: -87.6kB). Peak memory consumption was 22.1MB. Max. memory is 16.1GB. * Witness Printer took 40.62ms. Allocated memory is still 119.5MB. Free memory was 49.4MB in the beginning and 46.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 706]: 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, 89 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: 2.7s, OverallIterations: 5, TraceHistogramMax: 7, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 56 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 56 mSDsluCounter, 48 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 44 mSDsCounter, 28 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 163 IncrementalHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 28 mSolverCounterUnsat, 19 mSDtfsCounter, 163 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 392 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=316occurred in iteration=4, InterpolantAutomatonStates: 45, 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: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 529 NumberOfCodeBlocks, 504 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 645 ConstructedInterpolants, 0 QuantifiedInterpolants, 925 SizeOfPredicates, 12 NumberOfNonLiveVariables, 453 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 10 InterpolantComputations, 3 PerfectInterpolantSequences, 112/281 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! [2021-12-06 19:22:10,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14421f5f-cb08-4c75-9531-c1edddada146/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE