./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-time-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5afdb556-5738-4f6a-ac06-47fc5d8d6413/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5afdb556-5738-4f6a-ac06-47fc5d8d6413/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5afdb556-5738-4f6a-ac06-47fc5d8d6413/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5afdb556-5738-4f6a-ac06-47fc5d8d6413/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-time-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5afdb556-5738-4f6a-ac06-47fc5d8d6413/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5afdb556-5738-4f6a-ac06-47fc5d8d6413/bin/uautomizer-YU5uOKAj3y --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 72bbcf79bf9ab9dc66dc1f84247eb131a6de5c94da8e4a071481d48ca23ad8fa --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 17:51:37,348 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 17:51:37,352 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 17:51:37,393 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 17:51:37,393 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 17:51:37,395 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 17:51:37,397 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 17:51:37,399 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 17:51:37,402 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 17:51:37,404 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 17:51:37,405 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 17:51:37,407 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 17:51:37,408 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 17:51:37,409 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 17:51:37,411 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 17:51:37,413 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 17:51:37,414 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 17:51:37,416 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 17:51:37,425 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 17:51:37,428 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 17:51:37,430 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 17:51:37,432 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 17:51:37,433 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 17:51:37,434 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 17:51:37,439 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 17:51:37,439 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 17:51:37,440 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 17:51:37,441 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 17:51:37,442 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 17:51:37,443 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 17:51:37,443 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 17:51:37,444 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 17:51:37,445 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 17:51:37,446 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 17:51:37,448 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 17:51:37,448 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 17:51:37,449 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 17:51:37,450 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 17:51:37,450 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 17:51:37,451 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 17:51:37,452 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 17:51:37,453 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5afdb556-5738-4f6a-ac06-47fc5d8d6413/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-13 17:51:37,484 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 17:51:37,484 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 17:51:37,485 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 17:51:37,485 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 17:51:37,486 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 17:51:37,488 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 17:51:37,489 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 17:51:37,490 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 17:51:37,490 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 17:51:37,490 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 17:51:37,491 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 17:51:37,492 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 17:51:37,492 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 17:51:37,492 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 17:51:37,493 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 17:51:37,493 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 17:51:37,493 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 17:51:37,493 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 17:51:37,494 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 17:51:37,494 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 17:51:37,494 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 17:51:37,494 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 17:51:37,495 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 17:51:37,495 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 17:51:37,495 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:51:37,495 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 17:51:37,496 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 17:51:37,496 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 17:51:37,496 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 17:51:37,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 17:51:37,497 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 17:51:37,497 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 17:51:37,497 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 17:51:37,498 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 17:51:37,498 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_5afdb556-5738-4f6a-ac06-47fc5d8d6413/bin/uautomizer-YU5uOKAj3y/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5afdb556-5738-4f6a-ac06-47fc5d8d6413/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 72bbcf79bf9ab9dc66dc1f84247eb131a6de5c94da8e4a071481d48ca23ad8fa [2021-11-13 17:51:37,762 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 17:51:37,785 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 17:51:37,788 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 17:51:37,789 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 17:51:37,790 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 17:51:37,792 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5afdb556-5738-4f6a-ac06-47fc5d8d6413/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/weaver/chl-time-symm.wvr.c [2021-11-13 17:51:37,888 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5afdb556-5738-4f6a-ac06-47fc5d8d6413/bin/uautomizer-YU5uOKAj3y/data/1ef2ce3ea/82bd18598c014990b3c46c55fec40f1e/FLAGaa0174d12 [2021-11-13 17:51:38,422 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 17:51:38,423 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5afdb556-5738-4f6a-ac06-47fc5d8d6413/sv-benchmarks/c/weaver/chl-time-symm.wvr.c [2021-11-13 17:51:38,433 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5afdb556-5738-4f6a-ac06-47fc5d8d6413/bin/uautomizer-YU5uOKAj3y/data/1ef2ce3ea/82bd18598c014990b3c46c55fec40f1e/FLAGaa0174d12 [2021-11-13 17:51:38,759 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5afdb556-5738-4f6a-ac06-47fc5d8d6413/bin/uautomizer-YU5uOKAj3y/data/1ef2ce3ea/82bd18598c014990b3c46c55fec40f1e [2021-11-13 17:51:38,762 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 17:51:38,763 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 17:51:38,765 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 17:51:38,765 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 17:51:38,784 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 17:51:38,785 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:51:38" (1/1) ... [2021-11-13 17:51:38,786 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60bfbd28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:51:38, skipping insertion in model container [2021-11-13 17:51:38,789 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:51:38" (1/1) ... [2021-11-13 17:51:38,798 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 17:51:38,822 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:51:39,060 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5afdb556-5738-4f6a-ac06-47fc5d8d6413/sv-benchmarks/c/weaver/chl-time-symm.wvr.c[2494,2507] [2021-11-13 17:51:39,066 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:51:39,075 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 17:51:39,110 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5afdb556-5738-4f6a-ac06-47fc5d8d6413/sv-benchmarks/c/weaver/chl-time-symm.wvr.c[2494,2507] [2021-11-13 17:51:39,123 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:51:39,146 INFO L208 MainTranslator]: Completed translation [2021-11-13 17:51:39,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:51:39 WrapperNode [2021-11-13 17:51:39,147 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 17:51:39,148 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 17:51:39,149 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 17:51:39,149 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 17:51:39,158 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:51:39" (1/1) ... [2021-11-13 17:51:39,178 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:51:39" (1/1) ... [2021-11-13 17:51:39,224 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 17:51:39,225 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 17:51:39,225 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 17:51:39,226 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 17:51:39,236 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:51:39" (1/1) ... [2021-11-13 17:51:39,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:51:39" (1/1) ... [2021-11-13 17:51:39,239 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:51:39" (1/1) ... [2021-11-13 17:51:39,240 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:51:39" (1/1) ... [2021-11-13 17:51:39,247 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:51:39" (1/1) ... [2021-11-13 17:51:39,251 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:51:39" (1/1) ... [2021-11-13 17:51:39,253 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:51:39" (1/1) ... [2021-11-13 17:51:39,256 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 17:51:39,258 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 17:51:39,258 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 17:51:39,258 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 17:51:39,259 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:51:39" (1/1) ... [2021-11-13 17:51:39,268 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:51:39,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5afdb556-5738-4f6a-ac06-47fc5d8d6413/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:51:39,299 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5afdb556-5738-4f6a-ac06-47fc5d8d6413/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 17:51:39,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5afdb556-5738-4f6a-ac06-47fc5d8d6413/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 17:51:39,363 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-13 17:51:39,363 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-13 17:51:39,363 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-13 17:51:39,364 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-13 17:51:39,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 17:51:39,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 17:51:39,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-13 17:51:39,364 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-13 17:51:39,366 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-13 17:51:39,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 17:51:39,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 17:51:39,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-13 17:51:39,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 17:51:39,370 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-13 17:51:40,417 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 17:51:40,417 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-13 17:51:40,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:51:40 BoogieIcfgContainer [2021-11-13 17:51:40,420 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 17:51:40,422 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 17:51:40,425 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 17:51:40,429 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 17:51:40,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 05:51:38" (1/3) ... [2021-11-13 17:51:40,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c17292a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:51:40, skipping insertion in model container [2021-11-13 17:51:40,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:51:39" (2/3) ... [2021-11-13 17:51:40,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c17292a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:51:40, skipping insertion in model container [2021-11-13 17:51:40,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:51:40" (3/3) ... [2021-11-13 17:51:40,437 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-time-symm.wvr.c [2021-11-13 17:51:40,443 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-13 17:51:40,444 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 17:51:40,444 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 17:51:40,444 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-13 17:51:40,488 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,488 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,488 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,489 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,489 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,489 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,490 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,490 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,490 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,490 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,491 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,492 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,492 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,492 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,493 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,493 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,493 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,493 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,494 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,494 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,494 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,495 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,496 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,496 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,496 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,496 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,497 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,497 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,497 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,498 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,498 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,498 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,498 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,499 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,499 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,499 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,499 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,500 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,500 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,500 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,501 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,501 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,501 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,501 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,502 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,502 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,502 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,502 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,503 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,503 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,504 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,504 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,507 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,508 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,508 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,508 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,509 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,509 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,509 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,509 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,510 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,510 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,510 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,510 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,512 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,512 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,512 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,512 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,513 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,513 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,513 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,514 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,514 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,514 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,514 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,515 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:51:40,517 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-11-13 17:51:40,576 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 17:51:40,584 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 17:51:40,585 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-13 17:51:40,600 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 104 places, 102 transitions, 220 flow [2021-11-13 17:51:40,658 INFO L129 PetriNetUnfolder]: 5/100 cut-off events. [2021-11-13 17:51:40,658 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-11-13 17:51:40,661 INFO L84 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 100 events. 5/100 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 34 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2021-11-13 17:51:40,661 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 102 transitions, 220 flow [2021-11-13 17:51:40,667 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 93 places, 91 transitions, 194 flow [2021-11-13 17:51:40,697 INFO L129 PetriNetUnfolder]: 5/90 cut-off events. [2021-11-13 17:51:40,697 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-11-13 17:51:40,697 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:51:40,716 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:51:40,717 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-13 17:51:40,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:51:40,723 INFO L85 PathProgramCache]: Analyzing trace with hash -408130587, now seen corresponding path program 1 times [2021-11-13 17:51:40,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:51:40,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711735916] [2021-11-13 17:51:40,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:40,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:51:40,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:41,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:51:41,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:51:41,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711735916] [2021-11-13 17:51:41,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711735916] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:51:41,252 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:51:41,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 17:51:41,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545816803] [2021-11-13 17:51:41,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:51:41,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:51:41,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:51:41,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:51:41,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:51:41,310 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 102 [2021-11-13 17:51:41,320 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 91 transitions, 194 flow. Second operand has 5 states, 5 states have (on average 78.0) internal successors, (390), 5 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:41,320 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 17:51:41,320 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 102 [2021-11-13 17:51:41,322 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 17:51:41,538 INFO L129 PetriNetUnfolder]: 7/160 cut-off events. [2021-11-13 17:51:41,541 INFO L130 PetriNetUnfolder]: For 21/24 co-relation queries the response was YES. [2021-11-13 17:51:41,542 INFO L84 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 160 events. 7/160 cut-off events. For 21/24 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 324 event pairs, 0 based on Foata normal form. 5/154 useless extension candidates. Maximal degree in co-relation 80. Up to 15 conditions per place. [2021-11-13 17:51:41,546 INFO L132 encePairwiseOnDemand]: 92/102 looper letters, 30 selfloop transitions, 8 changer transitions 1/102 dead transitions. [2021-11-13 17:51:41,547 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 102 transitions, 301 flow [2021-11-13 17:51:41,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:51:41,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-11-13 17:51:41,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 562 transitions. [2021-11-13 17:51:41,576 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7871148459383753 [2021-11-13 17:51:41,577 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 562 transitions. [2021-11-13 17:51:41,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 562 transitions. [2021-11-13 17:51:41,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:51:41,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 562 transitions. [2021-11-13 17:51:41,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 80.28571428571429) internal successors, (562), 7 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:41,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 102.0) internal successors, (816), 8 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:41,600 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 102.0) internal successors, (816), 8 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:41,602 INFO L186 Difference]: Start difference. First operand has 93 places, 91 transitions, 194 flow. Second operand 7 states and 562 transitions. [2021-11-13 17:51:41,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 102 transitions, 301 flow [2021-11-13 17:51:41,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 102 transitions, 287 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-11-13 17:51:41,612 INFO L242 Difference]: Finished difference. Result has 98 places, 94 transitions, 230 flow [2021-11-13 17:51:41,614 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=230, PETRI_PLACES=98, PETRI_TRANSITIONS=94} [2021-11-13 17:51:41,619 INFO L334 CegarLoopForPetriNet]: 93 programPoint places, 5 predicate places. [2021-11-13 17:51:41,619 INFO L470 AbstractCegarLoop]: Abstraction has has 98 places, 94 transitions, 230 flow [2021-11-13 17:51:41,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.0) internal successors, (390), 5 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:41,620 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:51:41,620 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:51:41,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 17:51:41,621 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-13 17:51:41,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:51:41,622 INFO L85 PathProgramCache]: Analyzing trace with hash 2065107161, now seen corresponding path program 2 times [2021-11-13 17:51:41,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:51:41,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847390824] [2021-11-13 17:51:41,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:41,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:51:41,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:41,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:51:41,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:51:41,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847390824] [2021-11-13 17:51:41,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847390824] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:51:41,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:51:41,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 17:51:41,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239011223] [2021-11-13 17:51:41,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:51:41,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:51:41,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:51:41,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:51:41,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:51:41,839 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 102 [2021-11-13 17:51:41,849 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 94 transitions, 230 flow. Second operand has 5 states, 5 states have (on average 78.0) internal successors, (390), 5 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:41,849 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 17:51:41,849 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 102 [2021-11-13 17:51:41,850 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 17:51:42,134 INFO L129 PetriNetUnfolder]: 7/176 cut-off events. [2021-11-13 17:51:42,135 INFO L130 PetriNetUnfolder]: For 27/30 co-relation queries the response was YES. [2021-11-13 17:51:42,137 INFO L84 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 176 events. 7/176 cut-off events. For 27/30 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 406 event pairs, 1 based on Foata normal form. 3/176 useless extension candidates. Maximal degree in co-relation 168. Up to 19 conditions per place. [2021-11-13 17:51:42,139 INFO L132 encePairwiseOnDemand]: 96/102 looper letters, 35 selfloop transitions, 7 changer transitions 0/105 dead transitions. [2021-11-13 17:51:42,139 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 105 transitions, 350 flow [2021-11-13 17:51:42,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 17:51:42,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-11-13 17:51:42,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 486 transitions. [2021-11-13 17:51:42,143 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7941176470588235 [2021-11-13 17:51:42,144 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 486 transitions. [2021-11-13 17:51:42,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 486 transitions. [2021-11-13 17:51:42,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:51:42,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 486 transitions. [2021-11-13 17:51:42,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:42,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 102.0) internal successors, (714), 7 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:42,153 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 102.0) internal successors, (714), 7 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:42,153 INFO L186 Difference]: Start difference. First operand has 98 places, 94 transitions, 230 flow. Second operand 6 states and 486 transitions. [2021-11-13 17:51:42,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 105 transitions, 350 flow [2021-11-13 17:51:42,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 105 transitions, 344 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-11-13 17:51:42,161 INFO L242 Difference]: Finished difference. Result has 102 places, 96 transitions, 262 flow [2021-11-13 17:51:42,162 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=262, PETRI_PLACES=102, PETRI_TRANSITIONS=96} [2021-11-13 17:51:42,163 INFO L334 CegarLoopForPetriNet]: 93 programPoint places, 9 predicate places. [2021-11-13 17:51:42,163 INFO L470 AbstractCegarLoop]: Abstraction has has 102 places, 96 transitions, 262 flow [2021-11-13 17:51:42,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.0) internal successors, (390), 5 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:42,164 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:51:42,164 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:51:42,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 17:51:42,165 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-13 17:51:42,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:51:42,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1248762543, now seen corresponding path program 1 times [2021-11-13 17:51:42,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:51:42,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413078340] [2021-11-13 17:51:42,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:42,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:51:42,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:42,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:51:42,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:51:42,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413078340] [2021-11-13 17:51:42,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413078340] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:51:42,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:51:42,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 17:51:42,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245474611] [2021-11-13 17:51:42,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:51:42,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:51:42,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:51:42,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:51:42,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:51:42,353 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 102 [2021-11-13 17:51:42,354 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 96 transitions, 262 flow. Second operand has 5 states, 5 states have (on average 78.2) internal successors, (391), 5 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:42,354 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 17:51:42,354 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 102 [2021-11-13 17:51:42,354 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 17:51:42,512 INFO L129 PetriNetUnfolder]: 5/200 cut-off events. [2021-11-13 17:51:42,513 INFO L130 PetriNetUnfolder]: For 59/62 co-relation queries the response was YES. [2021-11-13 17:51:42,513 INFO L84 FinitePrefix]: Finished finitePrefix Result has 300 conditions, 200 events. 5/200 cut-off events. For 59/62 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 573 event pairs, 0 based on Foata normal form. 2/200 useless extension candidates. Maximal degree in co-relation 184. Up to 13 conditions per place. [2021-11-13 17:51:42,514 INFO L132 encePairwiseOnDemand]: 94/102 looper letters, 32 selfloop transitions, 9 changer transitions 0/104 dead transitions. [2021-11-13 17:51:42,520 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 104 transitions, 367 flow [2021-11-13 17:51:42,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 17:51:42,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-11-13 17:51:42,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 482 transitions. [2021-11-13 17:51:42,524 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7875816993464052 [2021-11-13 17:51:42,524 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 482 transitions. [2021-11-13 17:51:42,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 482 transitions. [2021-11-13 17:51:42,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:51:42,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 482 transitions. [2021-11-13 17:51:42,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 80.33333333333333) internal successors, (482), 6 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:42,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 102.0) internal successors, (714), 7 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:42,530 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 102.0) internal successors, (714), 7 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:42,530 INFO L186 Difference]: Start difference. First operand has 102 places, 96 transitions, 262 flow. Second operand 6 states and 482 transitions. [2021-11-13 17:51:42,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 104 transitions, 367 flow [2021-11-13 17:51:42,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 104 transitions, 365 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-11-13 17:51:42,541 INFO L242 Difference]: Finished difference. Result has 108 places, 99 transitions, 298 flow [2021-11-13 17:51:42,542 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=298, PETRI_PLACES=108, PETRI_TRANSITIONS=99} [2021-11-13 17:51:42,544 INFO L334 CegarLoopForPetriNet]: 93 programPoint places, 15 predicate places. [2021-11-13 17:51:42,545 INFO L470 AbstractCegarLoop]: Abstraction has has 108 places, 99 transitions, 298 flow [2021-11-13 17:51:42,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.2) internal successors, (391), 5 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:42,546 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:51:42,546 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:51:42,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 17:51:42,547 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-13 17:51:42,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:51:42,548 INFO L85 PathProgramCache]: Analyzing trace with hash -958834169, now seen corresponding path program 1 times [2021-11-13 17:51:42,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:51:42,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919715382] [2021-11-13 17:51:42,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:42,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:51:42,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:42,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:51:42,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:51:42,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919715382] [2021-11-13 17:51:42,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919715382] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:51:42,778 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:51:42,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 17:51:42,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128091917] [2021-11-13 17:51:42,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:51:42,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 17:51:42,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:51:42,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 17:51:42,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:51:42,782 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 102 [2021-11-13 17:51:42,783 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 99 transitions, 298 flow. Second operand has 7 states, 7 states have (on average 81.42857142857143) internal successors, (570), 7 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:42,783 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 17:51:42,784 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 102 [2021-11-13 17:51:42,784 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 17:51:42,934 INFO L129 PetriNetUnfolder]: 7/245 cut-off events. [2021-11-13 17:51:42,934 INFO L130 PetriNetUnfolder]: For 81/84 co-relation queries the response was YES. [2021-11-13 17:51:42,935 INFO L84 FinitePrefix]: Finished finitePrefix Result has 444 conditions, 245 events. 7/245 cut-off events. For 81/84 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 955 event pairs, 2 based on Foata normal form. 2/245 useless extension candidates. Maximal degree in co-relation 219. Up to 74 conditions per place. [2021-11-13 17:51:42,936 INFO L132 encePairwiseOnDemand]: 94/102 looper letters, 26 selfloop transitions, 4 changer transitions 4/111 dead transitions. [2021-11-13 17:51:42,936 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 111 transitions, 390 flow [2021-11-13 17:51:42,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:51:42,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-11-13 17:51:42,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 586 transitions. [2021-11-13 17:51:42,940 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8207282913165266 [2021-11-13 17:51:42,940 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 586 transitions. [2021-11-13 17:51:42,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 586 transitions. [2021-11-13 17:51:42,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:51:42,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 586 transitions. [2021-11-13 17:51:42,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 83.71428571428571) internal successors, (586), 7 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:42,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 102.0) internal successors, (816), 8 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:42,947 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 102.0) internal successors, (816), 8 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:42,947 INFO L186 Difference]: Start difference. First operand has 108 places, 99 transitions, 298 flow. Second operand 7 states and 586 transitions. [2021-11-13 17:51:42,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 111 transitions, 390 flow [2021-11-13 17:51:42,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 111 transitions, 382 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-11-13 17:51:42,954 INFO L242 Difference]: Finished difference. Result has 117 places, 102 transitions, 324 flow [2021-11-13 17:51:42,954 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=324, PETRI_PLACES=117, PETRI_TRANSITIONS=102} [2021-11-13 17:51:42,955 INFO L334 CegarLoopForPetriNet]: 93 programPoint places, 24 predicate places. [2021-11-13 17:51:42,956 INFO L470 AbstractCegarLoop]: Abstraction has has 117 places, 102 transitions, 324 flow [2021-11-13 17:51:42,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 81.42857142857143) internal successors, (570), 7 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:42,956 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:51:42,957 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:51:42,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-13 17:51:42,957 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-13 17:51:42,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:51:42,958 INFO L85 PathProgramCache]: Analyzing trace with hash 795161343, now seen corresponding path program 1 times [2021-11-13 17:51:42,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:51:42,958 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960793245] [2021-11-13 17:51:42,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:42,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:51:42,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:43,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:51:43,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:51:43,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960793245] [2021-11-13 17:51:43,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960793245] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:51:43,097 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:51:43,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 17:51:43,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836644037] [2021-11-13 17:51:43,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:51:43,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 17:51:43,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:51:43,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 17:51:43,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:51:43,102 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 102 [2021-11-13 17:51:43,103 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 102 transitions, 324 flow. Second operand has 7 states, 7 states have (on average 81.42857142857143) internal successors, (570), 7 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:43,104 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 17:51:43,104 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 102 [2021-11-13 17:51:43,104 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 17:51:43,238 INFO L129 PetriNetUnfolder]: 6/234 cut-off events. [2021-11-13 17:51:43,238 INFO L130 PetriNetUnfolder]: For 104/107 co-relation queries the response was YES. [2021-11-13 17:51:43,240 INFO L84 FinitePrefix]: Finished finitePrefix Result has 493 conditions, 234 events. 6/234 cut-off events. For 104/107 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 847 event pairs, 2 based on Foata normal form. 2/234 useless extension candidates. Maximal degree in co-relation 364. Up to 92 conditions per place. [2021-11-13 17:51:43,241 INFO L132 encePairwiseOnDemand]: 96/102 looper letters, 23 selfloop transitions, 0 changer transitions 10/107 dead transitions. [2021-11-13 17:51:43,241 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 107 transitions, 396 flow [2021-11-13 17:51:43,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:51:43,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-11-13 17:51:43,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 579 transitions. [2021-11-13 17:51:43,244 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8109243697478992 [2021-11-13 17:51:43,244 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 579 transitions. [2021-11-13 17:51:43,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 579 transitions. [2021-11-13 17:51:43,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:51:43,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 579 transitions. [2021-11-13 17:51:43,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 82.71428571428571) internal successors, (579), 7 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:43,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 102.0) internal successors, (816), 8 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:43,250 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 102.0) internal successors, (816), 8 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:43,250 INFO L186 Difference]: Start difference. First operand has 117 places, 102 transitions, 324 flow. Second operand 7 states and 579 transitions. [2021-11-13 17:51:43,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 107 transitions, 396 flow [2021-11-13 17:51:43,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 107 transitions, 384 flow, removed 5 selfloop flow, removed 4 redundant places. [2021-11-13 17:51:43,262 INFO L242 Difference]: Finished difference. Result has 121 places, 97 transitions, 295 flow [2021-11-13 17:51:43,264 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=295, PETRI_PLACES=121, PETRI_TRANSITIONS=97} [2021-11-13 17:51:43,267 INFO L334 CegarLoopForPetriNet]: 93 programPoint places, 28 predicate places. [2021-11-13 17:51:43,267 INFO L470 AbstractCegarLoop]: Abstraction has has 121 places, 97 transitions, 295 flow [2021-11-13 17:51:43,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 81.42857142857143) internal successors, (570), 7 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:43,268 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:51:43,268 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:51:43,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 17:51:43,270 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-13 17:51:43,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:51:43,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1527220719, now seen corresponding path program 2 times [2021-11-13 17:51:43,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:51:43,271 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574991628] [2021-11-13 17:51:43,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:43,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:51:43,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:43,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:51:43,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:51:43,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574991628] [2021-11-13 17:51:43,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574991628] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:51:43,404 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:51:43,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 17:51:43,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182994308] [2021-11-13 17:51:43,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:51:43,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:51:43,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:51:43,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:51:43,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:51:43,408 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 102 [2021-11-13 17:51:43,408 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 97 transitions, 295 flow. Second operand has 5 states, 5 states have (on average 78.2) internal successors, (391), 5 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:43,408 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 17:51:43,409 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 102 [2021-11-13 17:51:43,409 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 17:51:43,579 INFO L129 PetriNetUnfolder]: 6/201 cut-off events. [2021-11-13 17:51:43,579 INFO L130 PetriNetUnfolder]: For 78/81 co-relation queries the response was YES. [2021-11-13 17:51:43,580 INFO L84 FinitePrefix]: Finished finitePrefix Result has 388 conditions, 201 events. 6/201 cut-off events. For 78/81 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 587 event pairs, 1 based on Foata normal form. 2/202 useless extension candidates. Maximal degree in co-relation 371. Up to 13 conditions per place. [2021-11-13 17:51:43,581 INFO L132 encePairwiseOnDemand]: 95/102 looper letters, 28 selfloop transitions, 9 changer transitions 2/103 dead transitions. [2021-11-13 17:51:43,581 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 103 transitions, 397 flow [2021-11-13 17:51:43,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:51:43,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-11-13 17:51:43,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 556 transitions. [2021-11-13 17:51:43,584 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7787114845938375 [2021-11-13 17:51:43,585 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 556 transitions. [2021-11-13 17:51:43,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 556 transitions. [2021-11-13 17:51:43,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:51:43,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 556 transitions. [2021-11-13 17:51:43,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 79.42857142857143) internal successors, (556), 7 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:43,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 102.0) internal successors, (816), 8 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:43,590 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 102.0) internal successors, (816), 8 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:43,590 INFO L186 Difference]: Start difference. First operand has 121 places, 97 transitions, 295 flow. Second operand 7 states and 556 transitions. [2021-11-13 17:51:43,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 103 transitions, 397 flow [2021-11-13 17:51:43,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 103 transitions, 364 flow, removed 11 selfloop flow, removed 9 redundant places. [2021-11-13 17:51:43,596 INFO L242 Difference]: Finished difference. Result has 112 places, 96 transitions, 288 flow [2021-11-13 17:51:43,596 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=288, PETRI_PLACES=112, PETRI_TRANSITIONS=96} [2021-11-13 17:51:43,597 INFO L334 CegarLoopForPetriNet]: 93 programPoint places, 19 predicate places. [2021-11-13 17:51:43,597 INFO L470 AbstractCegarLoop]: Abstraction has has 112 places, 96 transitions, 288 flow [2021-11-13 17:51:43,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.2) internal successors, (391), 5 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:43,598 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:51:43,598 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:51:43,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-13 17:51:43,598 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-13 17:51:43,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:51:43,599 INFO L85 PathProgramCache]: Analyzing trace with hash -710130457, now seen corresponding path program 1 times [2021-11-13 17:51:43,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:51:43,599 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808467591] [2021-11-13 17:51:43,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:43,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:51:43,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:43,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:51:43,697 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:51:43,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808467591] [2021-11-13 17:51:43,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808467591] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:51:43,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:51:43,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 17:51:43,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086708344] [2021-11-13 17:51:43,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:51:43,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:51:43,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:51:43,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:51:43,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:51:43,701 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 102 [2021-11-13 17:51:43,702 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 96 transitions, 288 flow. Second operand has 6 states, 6 states have (on average 77.66666666666667) internal successors, (466), 6 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:43,702 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 17:51:43,703 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 102 [2021-11-13 17:51:43,703 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 17:51:43,834 INFO L129 PetriNetUnfolder]: 4/191 cut-off events. [2021-11-13 17:51:43,834 INFO L130 PetriNetUnfolder]: For 60/63 co-relation queries the response was YES. [2021-11-13 17:51:43,837 INFO L84 FinitePrefix]: Finished finitePrefix Result has 324 conditions, 191 events. 4/191 cut-off events. For 60/63 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 516 event pairs, 0 based on Foata normal form. 2/193 useless extension candidates. Maximal degree in co-relation 313. Up to 15 conditions per place. [2021-11-13 17:51:43,838 INFO L132 encePairwiseOnDemand]: 93/102 looper letters, 28 selfloop transitions, 11 changer transitions 0/103 dead transitions. [2021-11-13 17:51:43,838 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 103 transitions, 390 flow [2021-11-13 17:51:43,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:51:43,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-11-13 17:51:43,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 555 transitions. [2021-11-13 17:51:43,841 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7773109243697479 [2021-11-13 17:51:43,841 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 555 transitions. [2021-11-13 17:51:43,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 555 transitions. [2021-11-13 17:51:43,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:51:43,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 555 transitions. [2021-11-13 17:51:43,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 79.28571428571429) internal successors, (555), 7 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:43,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 102.0) internal successors, (816), 8 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:43,847 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 102.0) internal successors, (816), 8 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:43,847 INFO L186 Difference]: Start difference. First operand has 112 places, 96 transitions, 288 flow. Second operand 7 states and 555 transitions. [2021-11-13 17:51:43,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 103 transitions, 390 flow [2021-11-13 17:51:43,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 103 transitions, 375 flow, removed 1 selfloop flow, removed 4 redundant places. [2021-11-13 17:51:43,852 INFO L242 Difference]: Finished difference. Result has 115 places, 99 transitions, 323 flow [2021-11-13 17:51:43,852 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=323, PETRI_PLACES=115, PETRI_TRANSITIONS=99} [2021-11-13 17:51:43,854 INFO L334 CegarLoopForPetriNet]: 93 programPoint places, 22 predicate places. [2021-11-13 17:51:43,854 INFO L470 AbstractCegarLoop]: Abstraction has has 115 places, 99 transitions, 323 flow [2021-11-13 17:51:43,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 77.66666666666667) internal successors, (466), 6 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:43,856 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:51:43,857 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:51:43,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-13 17:51:43,857 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-13 17:51:43,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:51:43,858 INFO L85 PathProgramCache]: Analyzing trace with hash 675637189, now seen corresponding path program 1 times [2021-11-13 17:51:43,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:51:43,858 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539067107] [2021-11-13 17:51:43,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:43,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:51:43,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:44,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:51:44,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:51:44,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539067107] [2021-11-13 17:51:44,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539067107] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:51:44,026 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:51:44,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 17:51:44,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115809018] [2021-11-13 17:51:44,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:51:44,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:51:44,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:51:44,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:51:44,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:51:44,028 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 102 [2021-11-13 17:51:44,029 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 99 transitions, 323 flow. Second operand has 5 states, 5 states have (on average 78.4) internal successors, (392), 5 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:44,029 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 17:51:44,029 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 102 [2021-11-13 17:51:44,030 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 17:51:44,173 INFO L129 PetriNetUnfolder]: 3/180 cut-off events. [2021-11-13 17:51:44,173 INFO L130 PetriNetUnfolder]: For 78/78 co-relation queries the response was YES. [2021-11-13 17:51:44,173 INFO L84 FinitePrefix]: Finished finitePrefix Result has 317 conditions, 180 events. 3/180 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 459 event pairs, 0 based on Foata normal form. 1/181 useless extension candidates. Maximal degree in co-relation 306. Up to 16 conditions per place. [2021-11-13 17:51:44,174 INFO L132 encePairwiseOnDemand]: 98/102 looper letters, 33 selfloop transitions, 3 changer transitions 1/101 dead transitions. [2021-11-13 17:51:44,174 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 101 transitions, 393 flow [2021-11-13 17:51:44,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:51:44,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-11-13 17:51:44,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 405 transitions. [2021-11-13 17:51:44,177 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7941176470588235 [2021-11-13 17:51:44,177 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 405 transitions. [2021-11-13 17:51:44,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 405 transitions. [2021-11-13 17:51:44,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:51:44,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 405 transitions. [2021-11-13 17:51:44,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 81.0) internal successors, (405), 5 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:44,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 102.0) internal successors, (612), 6 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:44,182 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 102.0) internal successors, (612), 6 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:44,182 INFO L186 Difference]: Start difference. First operand has 115 places, 99 transitions, 323 flow. Second operand 5 states and 405 transitions. [2021-11-13 17:51:44,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 101 transitions, 393 flow [2021-11-13 17:51:44,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 101 transitions, 380 flow, removed 2 selfloop flow, removed 3 redundant places. [2021-11-13 17:51:44,187 INFO L242 Difference]: Finished difference. Result has 116 places, 96 transitions, 296 flow [2021-11-13 17:51:44,187 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=296, PETRI_PLACES=116, PETRI_TRANSITIONS=96} [2021-11-13 17:51:44,189 INFO L334 CegarLoopForPetriNet]: 93 programPoint places, 23 predicate places. [2021-11-13 17:51:44,189 INFO L470 AbstractCegarLoop]: Abstraction has has 116 places, 96 transitions, 296 flow [2021-11-13 17:51:44,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.4) internal successors, (392), 5 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:44,190 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:51:44,190 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:51:44,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-13 17:51:44,191 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-13 17:51:44,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:51:44,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1537972187, now seen corresponding path program 1 times [2021-11-13 17:51:44,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:51:44,206 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691951618] [2021-11-13 17:51:44,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:44,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:51:44,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:44,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:51:44,356 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:51:44,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691951618] [2021-11-13 17:51:44,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691951618] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:51:44,356 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:51:44,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 17:51:44,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474067730] [2021-11-13 17:51:44,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:51:44,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:51:44,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:51:44,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:51:44,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:51:44,360 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 102 [2021-11-13 17:51:44,361 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 96 transitions, 296 flow. Second operand has 6 states, 6 states have (on average 77.66666666666667) internal successors, (466), 6 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:44,361 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 17:51:44,361 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 102 [2021-11-13 17:51:44,361 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 17:51:44,513 INFO L129 PetriNetUnfolder]: 2/165 cut-off events. [2021-11-13 17:51:44,513 INFO L130 PetriNetUnfolder]: For 59/62 co-relation queries the response was YES. [2021-11-13 17:51:44,514 INFO L84 FinitePrefix]: Finished finitePrefix Result has 287 conditions, 165 events. 2/165 cut-off events. For 59/62 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 353 event pairs, 0 based on Foata normal form. 2/167 useless extension candidates. Maximal degree in co-relation 277. Up to 11 conditions per place. [2021-11-13 17:51:44,515 INFO L132 encePairwiseOnDemand]: 93/102 looper letters, 26 selfloop transitions, 10 changer transitions 0/100 dead transitions. [2021-11-13 17:51:44,515 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 100 transitions, 372 flow [2021-11-13 17:51:44,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:51:44,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-11-13 17:51:44,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 554 transitions. [2021-11-13 17:51:44,518 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7759103641456583 [2021-11-13 17:51:44,519 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 554 transitions. [2021-11-13 17:51:44,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 554 transitions. [2021-11-13 17:51:44,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:51:44,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 554 transitions. [2021-11-13 17:51:44,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 79.14285714285714) internal successors, (554), 7 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:44,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 102.0) internal successors, (816), 8 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:44,525 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 102.0) internal successors, (816), 8 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:44,525 INFO L186 Difference]: Start difference. First operand has 116 places, 96 transitions, 296 flow. Second operand 7 states and 554 transitions. [2021-11-13 17:51:44,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 100 transitions, 372 flow [2021-11-13 17:51:44,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 100 transitions, 364 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-11-13 17:51:44,531 INFO L242 Difference]: Finished difference. Result has 116 places, 97 transitions, 305 flow [2021-11-13 17:51:44,532 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=305, PETRI_PLACES=116, PETRI_TRANSITIONS=97} [2021-11-13 17:51:44,533 INFO L334 CegarLoopForPetriNet]: 93 programPoint places, 23 predicate places. [2021-11-13 17:51:44,533 INFO L470 AbstractCegarLoop]: Abstraction has has 116 places, 97 transitions, 305 flow [2021-11-13 17:51:44,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 77.66666666666667) internal successors, (466), 6 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:44,534 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:51:44,534 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:51:44,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-13 17:51:44,535 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-13 17:51:44,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:51:44,536 INFO L85 PathProgramCache]: Analyzing trace with hash 2060768543, now seen corresponding path program 1 times [2021-11-13 17:51:44,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:51:44,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803707907] [2021-11-13 17:51:44,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:44,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:51:44,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:44,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:51:44,674 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:51:44,674 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803707907] [2021-11-13 17:51:44,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803707907] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:51:44,675 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:51:44,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 17:51:44,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389357408] [2021-11-13 17:51:44,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:51:44,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 17:51:44,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:51:44,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 17:51:44,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:51:44,686 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 102 [2021-11-13 17:51:44,687 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 97 transitions, 305 flow. Second operand has 8 states, 8 states have (on average 78.375) internal successors, (627), 8 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:44,687 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 17:51:44,687 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 102 [2021-11-13 17:51:44,687 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 17:51:44,837 INFO L129 PetriNetUnfolder]: 2/151 cut-off events. [2021-11-13 17:51:44,837 INFO L130 PetriNetUnfolder]: For 58/61 co-relation queries the response was YES. [2021-11-13 17:51:44,838 INFO L84 FinitePrefix]: Finished finitePrefix Result has 298 conditions, 151 events. 2/151 cut-off events. For 58/61 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 267 event pairs, 2 based on Foata normal form. 2/151 useless extension candidates. Maximal degree in co-relation 288. Up to 41 conditions per place. [2021-11-13 17:51:44,839 INFO L132 encePairwiseOnDemand]: 93/102 looper letters, 26 selfloop transitions, 4 changer transitions 12/108 dead transitions. [2021-11-13 17:51:44,839 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 108 transitions, 401 flow [2021-11-13 17:51:44,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 17:51:44,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-11-13 17:51:44,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 644 transitions. [2021-11-13 17:51:44,843 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7892156862745098 [2021-11-13 17:51:44,843 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 644 transitions. [2021-11-13 17:51:44,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 644 transitions. [2021-11-13 17:51:44,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:51:44,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 644 transitions. [2021-11-13 17:51:44,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 80.5) internal successors, (644), 8 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:44,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 102.0) internal successors, (918), 9 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:44,850 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 102.0) internal successors, (918), 9 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:44,851 INFO L186 Difference]: Start difference. First operand has 116 places, 97 transitions, 305 flow. Second operand 8 states and 644 transitions. [2021-11-13 17:51:44,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 108 transitions, 401 flow [2021-11-13 17:51:44,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 108 transitions, 393 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-11-13 17:51:44,856 INFO L242 Difference]: Finished difference. Result has 126 places, 90 transitions, 270 flow [2021-11-13 17:51:44,857 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=270, PETRI_PLACES=126, PETRI_TRANSITIONS=90} [2021-11-13 17:51:44,859 INFO L334 CegarLoopForPetriNet]: 93 programPoint places, 33 predicate places. [2021-11-13 17:51:44,859 INFO L470 AbstractCegarLoop]: Abstraction has has 126 places, 90 transitions, 270 flow [2021-11-13 17:51:44,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 78.375) internal successors, (627), 8 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:44,860 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:51:44,860 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:51:44,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-13 17:51:44,861 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-13 17:51:44,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:51:44,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1369150365, now seen corresponding path program 2 times [2021-11-13 17:51:44,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:51:44,865 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44557304] [2021-11-13 17:51:44,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:44,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:51:44,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:44,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:51:44,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:51:44,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44557304] [2021-11-13 17:51:44,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44557304] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:51:44,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:51:44,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 17:51:44,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500089818] [2021-11-13 17:51:44,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:51:44,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:51:44,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:51:44,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:51:44,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:51:44,977 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 102 [2021-11-13 17:51:44,978 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 90 transitions, 270 flow. Second operand has 5 states, 5 states have (on average 78.4) internal successors, (392), 5 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:44,978 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 17:51:44,979 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 102 [2021-11-13 17:51:44,979 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 17:51:45,076 INFO L129 PetriNetUnfolder]: 0/85 cut-off events. [2021-11-13 17:51:45,076 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2021-11-13 17:51:45,077 INFO L84 FinitePrefix]: Finished finitePrefix Result has 161 conditions, 85 events. 0/85 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 18 event pairs, 0 based on Foata normal form. 2/87 useless extension candidates. Maximal degree in co-relation 0. Up to 9 conditions per place. [2021-11-13 17:51:45,077 INFO L132 encePairwiseOnDemand]: 96/102 looper letters, 17 selfloop transitions, 5 changer transitions 4/85 dead transitions. [2021-11-13 17:51:45,078 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 85 transitions, 288 flow [2021-11-13 17:51:45,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 17:51:45,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-11-13 17:51:45,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 468 transitions. [2021-11-13 17:51:45,081 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7647058823529411 [2021-11-13 17:51:45,092 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 468 transitions. [2021-11-13 17:51:45,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 468 transitions. [2021-11-13 17:51:45,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:51:45,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 468 transitions. [2021-11-13 17:51:45,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 78.0) internal successors, (468), 6 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:45,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 102.0) internal successors, (714), 7 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:45,098 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 102.0) internal successors, (714), 7 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:45,098 INFO L186 Difference]: Start difference. First operand has 126 places, 90 transitions, 270 flow. Second operand 6 states and 468 transitions. [2021-11-13 17:51:45,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 85 transitions, 288 flow [2021-11-13 17:51:45,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 85 transitions, 246 flow, removed 8 selfloop flow, removed 17 redundant places. [2021-11-13 17:51:45,102 INFO L242 Difference]: Finished difference. Result has 102 places, 81 transitions, 190 flow [2021-11-13 17:51:45,102 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=190, PETRI_PLACES=102, PETRI_TRANSITIONS=81} [2021-11-13 17:51:45,103 INFO L334 CegarLoopForPetriNet]: 93 programPoint places, 9 predicate places. [2021-11-13 17:51:45,103 INFO L470 AbstractCegarLoop]: Abstraction has has 102 places, 81 transitions, 190 flow [2021-11-13 17:51:45,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.4) internal successors, (392), 5 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:45,104 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:51:45,104 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:51:45,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-13 17:51:45,105 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-13 17:51:45,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:51:45,105 INFO L85 PathProgramCache]: Analyzing trace with hash 262757773, now seen corresponding path program 2 times [2021-11-13 17:51:45,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:51:45,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324207456] [2021-11-13 17:51:45,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:45,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:51:45,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:45,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:51:45,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:51:45,184 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324207456] [2021-11-13 17:51:45,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324207456] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:51:45,184 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:51:45,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 17:51:45,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632191388] [2021-11-13 17:51:45,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:51:45,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:51:45,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:51:45,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:51:45,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:51:45,187 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 102 [2021-11-13 17:51:45,188 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 81 transitions, 190 flow. Second operand has 5 states, 5 states have (on average 78.4) internal successors, (392), 5 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:45,188 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 17:51:45,188 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 102 [2021-11-13 17:51:45,188 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 17:51:45,252 INFO L129 PetriNetUnfolder]: 0/66 cut-off events. [2021-11-13 17:51:45,253 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-11-13 17:51:45,253 INFO L84 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 66 events. 0/66 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 12 event pairs, 0 based on Foata normal form. 1/67 useless extension candidates. Maximal degree in co-relation 0. Up to 15 conditions per place. [2021-11-13 17:51:45,253 INFO L132 encePairwiseOnDemand]: 98/102 looper letters, 0 selfloop transitions, 0 changer transitions 66/66 dead transitions. [2021-11-13 17:51:45,253 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 66 transitions, 192 flow [2021-11-13 17:51:45,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:51:45,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-11-13 17:51:45,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 391 transitions. [2021-11-13 17:51:45,255 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7666666666666667 [2021-11-13 17:51:45,255 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 391 transitions. [2021-11-13 17:51:45,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 391 transitions. [2021-11-13 17:51:45,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:51:45,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 391 transitions. [2021-11-13 17:51:45,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 78.2) internal successors, (391), 5 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:45,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 102.0) internal successors, (612), 6 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:45,259 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 102.0) internal successors, (612), 6 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:45,259 INFO L186 Difference]: Start difference. First operand has 102 places, 81 transitions, 190 flow. Second operand 5 states and 391 transitions. [2021-11-13 17:51:45,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 66 transitions, 192 flow [2021-11-13 17:51:45,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 66 transitions, 180 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-11-13 17:51:45,261 INFO L242 Difference]: Finished difference. Result has 78 places, 0 transitions, 0 flow [2021-11-13 17:51:45,261 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=78, PETRI_TRANSITIONS=0} [2021-11-13 17:51:45,262 INFO L334 CegarLoopForPetriNet]: 93 programPoint places, -15 predicate places. [2021-11-13 17:51:45,262 INFO L470 AbstractCegarLoop]: Abstraction has has 78 places, 0 transitions, 0 flow [2021-11-13 17:51:45,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.4) internal successors, (392), 5 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:45,265 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2021-11-13 17:51:45,265 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2021-11-13 17:51:45,266 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2021-11-13 17:51:45,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-13 17:51:45,270 INFO L732 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1] [2021-11-13 17:51:45,272 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-13 17:51:45,272 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-13 17:51:45,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 05:51:45 BasicIcfg [2021-11-13 17:51:45,276 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-13 17:51:45,276 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-13 17:51:45,276 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-13 17:51:45,277 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-13 17:51:45,277 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:51:40" (3/4) ... [2021-11-13 17:51:45,280 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-13 17:51:45,285 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-11-13 17:51:45,285 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-11-13 17:51:45,290 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2021-11-13 17:51:45,290 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-13 17:51:45,291 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-13 17:51:45,291 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-13 17:51:45,327 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5afdb556-5738-4f6a-ac06-47fc5d8d6413/bin/uautomizer-YU5uOKAj3y/witness.graphml [2021-11-13 17:51:45,327 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-13 17:51:45,328 INFO L158 Benchmark]: Toolchain (without parser) took 6564.22ms. Allocated memory was 94.4MB in the beginning and 151.0MB in the end (delta: 56.6MB). Free memory was 61.3MB in the beginning and 97.9MB in the end (delta: -36.6MB). Peak memory consumption was 20.1MB. Max. memory is 16.1GB. [2021-11-13 17:51:45,328 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 94.4MB. Free memory is still 48.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 17:51:45,329 INFO L158 Benchmark]: CACSL2BoogieTranslator took 382.34ms. Allocated memory is still 94.4MB. Free memory was 61.1MB in the beginning and 69.4MB in the end (delta: -8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-13 17:51:45,329 INFO L158 Benchmark]: Boogie Procedure Inliner took 76.08ms. Allocated memory is still 94.4MB. Free memory was 69.4MB in the beginning and 67.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 17:51:45,330 INFO L158 Benchmark]: Boogie Preprocessor took 31.52ms. Allocated memory is still 94.4MB. Free memory was 67.3MB in the beginning and 66.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 17:51:45,330 INFO L158 Benchmark]: RCFGBuilder took 1162.51ms. Allocated memory was 94.4MB in the beginning and 121.6MB in the end (delta: 27.3MB). Free memory was 66.0MB in the beginning and 85.8MB in the end (delta: -19.8MB). Peak memory consumption was 25.9MB. Max. memory is 16.1GB. [2021-11-13 17:51:45,331 INFO L158 Benchmark]: TraceAbstraction took 4853.82ms. Allocated memory was 121.6MB in the beginning and 151.0MB in the end (delta: 29.4MB). Free memory was 85.2MB in the beginning and 101.1MB in the end (delta: -15.8MB). Peak memory consumption was 12.0MB. Max. memory is 16.1GB. [2021-11-13 17:51:45,331 INFO L158 Benchmark]: Witness Printer took 50.96ms. Allocated memory is still 151.0MB. Free memory was 101.1MB in the beginning and 97.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-13 17:51:45,334 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 94.4MB. Free memory is still 48.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 382.34ms. Allocated memory is still 94.4MB. Free memory was 61.1MB in the beginning and 69.4MB in the end (delta: -8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 76.08ms. Allocated memory is still 94.4MB. Free memory was 69.4MB in the beginning and 67.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.52ms. Allocated memory is still 94.4MB. Free memory was 67.3MB in the beginning and 66.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1162.51ms. Allocated memory was 94.4MB in the beginning and 121.6MB in the end (delta: 27.3MB). Free memory was 66.0MB in the beginning and 85.8MB in the end (delta: -19.8MB). Peak memory consumption was 25.9MB. Max. memory is 16.1GB. * TraceAbstraction took 4853.82ms. Allocated memory was 121.6MB in the beginning and 151.0MB in the end (delta: 29.4MB). Free memory was 85.2MB in the beginning and 101.1MB in the end (delta: -15.8MB). Peak memory consumption was 12.0MB. Max. memory is 16.1GB. * Witness Printer took 50.96ms. Allocated memory is still 151.0MB. Free memory was 101.1MB in the beginning and 97.9MB 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: 80]: 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 5 procedures, 108 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: 4.7s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 274 SdHoareTripleChecker+Valid, 755.15ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 274 mSDsluCounter, 460 SdHoareTripleChecker+Invalid, 612.66ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 500 mSDsCounter, 25 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 711 IncrementalHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 25 mSolverCounterUnsat, 157 mSDtfsCounter, 711 mSolverCounterSat, 15.46ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 104 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=324occurred in iteration=4, InterpolantAutomatonStates: 78, 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, 0.6s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 956 NumberOfCodeBlocks, 956 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 944 ConstructedInterpolants, 0 QuantifiedInterpolants, 2384 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-11-13 17:51:45,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5afdb556-5738-4f6a-ac06-47fc5d8d6413/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE