./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-misc-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-misc-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF --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 c245694d80bb36f575f27eb50fa261b26ec38a4ced597397981ad6c6c7486707 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 05:33:11,173 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 05:33:11,178 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 05:33:11,226 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 05:33:11,227 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 05:33:11,232 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 05:33:11,234 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 05:33:11,238 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 05:33:11,240 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 05:33:11,246 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 05:33:11,247 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 05:33:11,249 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 05:33:11,249 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 05:33:11,252 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 05:33:11,254 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 05:33:11,258 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 05:33:11,260 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 05:33:11,261 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 05:33:11,263 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 05:33:11,267 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 05:33:11,269 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 05:33:11,272 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 05:33:11,275 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 05:33:11,276 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 05:33:11,286 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 05:33:11,286 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 05:33:11,287 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 05:33:11,288 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 05:33:11,289 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 05:33:11,291 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 05:33:11,291 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 05:33:11,292 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 05:33:11,294 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 05:33:11,295 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 05:33:11,297 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 05:33:11,297 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 05:33:11,298 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 05:33:11,298 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 05:33:11,298 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 05:33:11,299 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 05:33:11,300 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 05:33:11,301 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 05:33:11,347 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 05:33:11,350 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 05:33:11,350 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 05:33:11,351 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 05:33:11,351 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 05:33:11,352 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 05:33:11,352 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 05:33:11,353 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 05:33:11,353 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 05:33:11,353 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 05:33:11,354 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 05:33:11,354 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 05:33:11,355 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 05:33:11,355 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 05:33:11,355 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 05:33:11,355 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 05:33:11,356 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 05:33:11,356 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 05:33:11,356 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 05:33:11,356 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 05:33:11,356 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 05:33:11,357 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 05:33:11,357 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 05:33:11,357 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 05:33:11,357 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:33:11,358 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 05:33:11,358 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 05:33:11,358 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 05:33:11,358 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 05:33:11,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 05:33:11,360 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 05:33:11,360 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 05:33:11,361 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 05:33:11,361 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 05:33:11,361 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_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c245694d80bb36f575f27eb50fa261b26ec38a4ced597397981ad6c6c7486707 [2021-11-20 05:33:11,648 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 05:33:11,668 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 05:33:11,670 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 05:33:11,672 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 05:33:11,672 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 05:33:11,674 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/weaver/parallel-misc-2.wvr.c [2021-11-20 05:33:11,751 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/data/0269bda48/a206a1931aed4a78a893dbb64734bd45/FLAG2d6724a68 [2021-11-20 05:33:12,248 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 05:33:12,249 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/sv-benchmarks/c/weaver/parallel-misc-2.wvr.c [2021-11-20 05:33:12,258 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/data/0269bda48/a206a1931aed4a78a893dbb64734bd45/FLAG2d6724a68 [2021-11-20 05:33:12,636 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/data/0269bda48/a206a1931aed4a78a893dbb64734bd45 [2021-11-20 05:33:12,640 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 05:33:12,642 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 05:33:12,647 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 05:33:12,647 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 05:33:12,651 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 05:33:12,651 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:33:12" (1/1) ... [2021-11-20 05:33:12,652 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76acaa93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:33:12, skipping insertion in model container [2021-11-20 05:33:12,653 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:33:12" (1/1) ... [2021-11-20 05:33:12,659 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 05:33:12,680 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 05:33:12,881 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/sv-benchmarks/c/weaver/parallel-misc-2.wvr.c[2554,2567] [2021-11-20 05:33:12,884 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:33:12,892 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 05:33:12,914 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/sv-benchmarks/c/weaver/parallel-misc-2.wvr.c[2554,2567] [2021-11-20 05:33:12,915 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:33:12,929 INFO L208 MainTranslator]: Completed translation [2021-11-20 05:33:12,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:33:12 WrapperNode [2021-11-20 05:33:12,930 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 05:33:12,931 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 05:33:12,931 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 05:33:12,931 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 05:33:12,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:33:12" (1/1) ... [2021-11-20 05:33:12,946 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:33:12" (1/1) ... [2021-11-20 05:33:12,965 INFO L137 Inliner]: procedures = 21, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 66 [2021-11-20 05:33:12,966 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 05:33:12,966 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 05:33:12,967 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 05:33:12,967 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 05:33:12,975 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:33:12" (1/1) ... [2021-11-20 05:33:12,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:33:12" (1/1) ... [2021-11-20 05:33:12,977 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:33:12" (1/1) ... [2021-11-20 05:33:12,978 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:33:12" (1/1) ... [2021-11-20 05:33:12,983 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:33:12" (1/1) ... [2021-11-20 05:33:12,987 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:33:12" (1/1) ... [2021-11-20 05:33:12,988 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:33:12" (1/1) ... [2021-11-20 05:33:12,991 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 05:33:12,992 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 05:33:12,992 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 05:33:12,992 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 05:33:12,993 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:33:12" (1/1) ... [2021-11-20 05:33:13,000 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:33:13,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:33:13,023 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 05:33:13,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 05:33:13,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 05:33:13,068 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-20 05:33:13,068 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-20 05:33:13,069 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-20 05:33:13,069 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-20 05:33:13,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 05:33:13,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 05:33:13,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 05:33:13,070 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-20 05:33:13,070 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-20 05:33:13,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 05:33:13,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 05:33:13,070 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 05:33:13,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 05:33:13,072 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-20 05:33:13,148 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 05:33:13,150 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 05:33:13,351 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 05:33:13,393 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 05:33:13,393 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-20 05:33:13,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:33:13 BoogieIcfgContainer [2021-11-20 05:33:13,395 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 05:33:13,397 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 05:33:13,397 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 05:33:13,414 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 05:33:13,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:33:12" (1/3) ... [2021-11-20 05:33:13,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e7cb308 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:33:13, skipping insertion in model container [2021-11-20 05:33:13,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:33:12" (2/3) ... [2021-11-20 05:33:13,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e7cb308 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:33:13, skipping insertion in model container [2021-11-20 05:33:13,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:33:13" (3/3) ... [2021-11-20 05:33:13,417 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-misc-2.wvr.c [2021-11-20 05:33:13,422 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-20 05:33:13,422 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 05:33:13,422 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 05:33:13,422 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-20 05:33:13,487 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:33:13,491 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:33:13,492 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:33:13,492 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:33:13,493 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:33:13,493 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:33:13,493 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:33:13,493 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:33:13,494 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:33:13,494 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:33:13,494 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:33:13,495 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:33:13,498 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:33:13,498 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:33:13,499 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:33:13,499 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:33:13,499 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:33:13,499 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:33:13,501 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:33:13,502 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:33:13,502 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:33:13,502 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:33:13,502 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:33:13,502 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:33:13,505 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:33:13,506 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:33:13,506 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:33:13,506 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:33:13,506 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:33:13,507 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:33:13,507 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:33:13,508 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:33:13,510 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-11-20 05:33:13,560 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 05:33:13,567 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 [2021-11-20 05:33:13,567 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-20 05:33:13,580 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 103 places, 104 transitions, 224 flow [2021-11-20 05:33:13,633 INFO L129 PetriNetUnfolder]: 8/102 cut-off events. [2021-11-20 05:33:13,634 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-11-20 05:33:13,638 INFO L84 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 102 events. 8/102 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 70 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2021-11-20 05:33:13,638 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 104 transitions, 224 flow [2021-11-20 05:33:13,643 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 92 places, 93 transitions, 198 flow [2021-11-20 05:33:13,682 INFO L129 PetriNetUnfolder]: 8/92 cut-off events. [2021-11-20 05:33:13,682 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-11-20 05:33:13,682 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:33:13,683 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:33:13,683 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 05:33:13,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:33:13,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1147510984, now seen corresponding path program 1 times [2021-11-20 05:33:13,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:33:13,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522124118] [2021-11-20 05:33:13,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:33:13,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:33:13,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:14,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:33:14,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:33:14,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522124118] [2021-11-20 05:33:14,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522124118] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:33:14,216 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:33:14,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 05:33:14,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487243599] [2021-11-20 05:33:14,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:33:14,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 05:33:14,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:33:14,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 05:33:14,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:33:14,264 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 104 [2021-11-20 05:33:14,269 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 93 transitions, 198 flow. Second operand has 7 states, 7 states have (on average 81.0) internal successors, (567), 7 states have internal predecessors, (567), 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) [2021-11-20 05:33:14,269 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:33:14,269 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 104 [2021-11-20 05:33:14,271 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:33:14,510 INFO L129 PetriNetUnfolder]: 24/150 cut-off events. [2021-11-20 05:33:14,511 INFO L130 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2021-11-20 05:33:14,514 INFO L84 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 150 events. 24/150 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 288 event pairs, 0 based on Foata normal form. 15/150 useless extension candidates. Maximal degree in co-relation 97. Up to 36 conditions per place. [2021-11-20 05:33:14,518 INFO L132 encePairwiseOnDemand]: 86/104 looper letters, 15 selfloop transitions, 9 changer transitions 7/100 dead transitions. [2021-11-20 05:33:14,518 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 100 transitions, 283 flow [2021-11-20 05:33:14,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 05:33:14,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-11-20 05:33:14,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 750 transitions. [2021-11-20 05:33:14,554 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8012820512820513 [2021-11-20 05:33:14,555 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 750 transitions. [2021-11-20 05:33:14,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 750 transitions. [2021-11-20 05:33:14,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:33:14,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 750 transitions. [2021-11-20 05:33:14,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 83.33333333333333) internal successors, (750), 9 states have internal predecessors, (750), 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) [2021-11-20 05:33:14,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 104.0) internal successors, (1040), 10 states have internal predecessors, (1040), 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) [2021-11-20 05:33:14,581 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 104.0) internal successors, (1040), 10 states have internal predecessors, (1040), 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) [2021-11-20 05:33:14,583 INFO L186 Difference]: Start difference. First operand has 92 places, 93 transitions, 198 flow. Second operand 9 states and 750 transitions. [2021-11-20 05:33:14,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 100 transitions, 283 flow [2021-11-20 05:33:14,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 100 transitions, 269 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-11-20 05:33:14,592 INFO L242 Difference]: Finished difference. Result has 99 places, 91 transitions, 225 flow [2021-11-20 05:33:14,594 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=225, PETRI_PLACES=99, PETRI_TRANSITIONS=91} [2021-11-20 05:33:14,598 INFO L334 CegarLoopForPetriNet]: 92 programPoint places, 7 predicate places. [2021-11-20 05:33:14,599 INFO L470 AbstractCegarLoop]: Abstraction has has 99 places, 91 transitions, 225 flow [2021-11-20 05:33:14,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 81.0) internal successors, (567), 7 states have internal predecessors, (567), 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) [2021-11-20 05:33:14,603 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:33:14,604 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] [2021-11-20 05:33:14,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 05:33:14,605 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 05:33:14,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:33:14,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1329566277, now seen corresponding path program 1 times [2021-11-20 05:33:14,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:33:14,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666681270] [2021-11-20 05:33:14,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:33:14,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:33:14,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:14,883 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:33:14,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:33:14,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666681270] [2021-11-20 05:33:14,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666681270] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:33:14,886 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:33:14,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 05:33:14,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433330700] [2021-11-20 05:33:14,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:33:14,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:33:14,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:33:14,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:33:14,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:33:14,894 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 104 [2021-11-20 05:33:14,895 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 91 transitions, 225 flow. Second operand has 6 states, 6 states have (on average 73.0) internal successors, (438), 6 states have internal predecessors, (438), 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) [2021-11-20 05:33:14,895 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:33:14,896 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 104 [2021-11-20 05:33:14,896 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:33:15,214 INFO L129 PetriNetUnfolder]: 93/350 cut-off events. [2021-11-20 05:33:15,214 INFO L130 PetriNetUnfolder]: For 46/50 co-relation queries the response was YES. [2021-11-20 05:33:15,217 INFO L84 FinitePrefix]: Finished finitePrefix Result has 618 conditions, 350 events. 93/350 cut-off events. For 46/50 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1535 event pairs, 13 based on Foata normal form. 0/302 useless extension candidates. Maximal degree in co-relation 602. Up to 58 conditions per place. [2021-11-20 05:33:15,219 INFO L132 encePairwiseOnDemand]: 93/104 looper letters, 48 selfloop transitions, 12 changer transitions 1/122 dead transitions. [2021-11-20 05:33:15,220 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 122 transitions, 430 flow [2021-11-20 05:33:15,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 05:33:15,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-11-20 05:33:15,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 544 transitions. [2021-11-20 05:33:15,223 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7472527472527473 [2021-11-20 05:33:15,223 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 544 transitions. [2021-11-20 05:33:15,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 544 transitions. [2021-11-20 05:33:15,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:33:15,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 544 transitions. [2021-11-20 05:33:15,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 77.71428571428571) internal successors, (544), 7 states have internal predecessors, (544), 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) [2021-11-20 05:33:15,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 104.0) internal successors, (832), 8 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:33:15,229 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 104.0) internal successors, (832), 8 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:33:15,229 INFO L186 Difference]: Start difference. First operand has 99 places, 91 transitions, 225 flow. Second operand 7 states and 544 transitions. [2021-11-20 05:33:15,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 122 transitions, 430 flow [2021-11-20 05:33:15,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 122 transitions, 411 flow, removed 4 selfloop flow, removed 5 redundant places. [2021-11-20 05:33:15,251 INFO L242 Difference]: Finished difference. Result has 98 places, 97 transitions, 280 flow [2021-11-20 05:33:15,252 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=280, PETRI_PLACES=98, PETRI_TRANSITIONS=97} [2021-11-20 05:33:15,253 INFO L334 CegarLoopForPetriNet]: 92 programPoint places, 6 predicate places. [2021-11-20 05:33:15,253 INFO L470 AbstractCegarLoop]: Abstraction has has 98 places, 97 transitions, 280 flow [2021-11-20 05:33:15,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.0) internal successors, (438), 6 states have internal predecessors, (438), 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) [2021-11-20 05:33:15,253 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:33:15,254 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] [2021-11-20 05:33:15,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 05:33:15,254 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 05:33:15,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:33:15,255 INFO L85 PathProgramCache]: Analyzing trace with hash -99201494, now seen corresponding path program 1 times [2021-11-20 05:33:15,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:33:15,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644578389] [2021-11-20 05:33:15,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:33:15,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:33:15,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:15,399 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:33:15,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:33:15,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644578389] [2021-11-20 05:33:15,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644578389] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:33:15,400 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:33:15,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 05:33:15,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837785606] [2021-11-20 05:33:15,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:33:15,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:33:15,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:33:15,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:33:15,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:33:15,403 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 104 [2021-11-20 05:33:15,404 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 97 transitions, 280 flow. Second operand has 6 states, 6 states have (on average 72.83333333333333) internal successors, (437), 6 states have internal predecessors, (437), 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) [2021-11-20 05:33:15,404 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:33:15,404 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 104 [2021-11-20 05:33:15,404 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:33:15,633 INFO L129 PetriNetUnfolder]: 90/353 cut-off events. [2021-11-20 05:33:15,633 INFO L130 PetriNetUnfolder]: For 193/193 co-relation queries the response was YES. [2021-11-20 05:33:15,636 INFO L84 FinitePrefix]: Finished finitePrefix Result has 747 conditions, 353 events. 90/353 cut-off events. For 193/193 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1585 event pairs, 9 based on Foata normal form. 2/332 useless extension candidates. Maximal degree in co-relation 464. Up to 88 conditions per place. [2021-11-20 05:33:15,641 INFO L132 encePairwiseOnDemand]: 91/104 looper letters, 49 selfloop transitions, 16 changer transitions 4/130 dead transitions. [2021-11-20 05:33:15,641 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 130 transitions, 551 flow [2021-11-20 05:33:15,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 05:33:15,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-11-20 05:33:15,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 542 transitions. [2021-11-20 05:33:15,644 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7445054945054945 [2021-11-20 05:33:15,645 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 542 transitions. [2021-11-20 05:33:15,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 542 transitions. [2021-11-20 05:33:15,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:33:15,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 542 transitions. [2021-11-20 05:33:15,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 77.42857142857143) internal successors, (542), 7 states have internal predecessors, (542), 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) [2021-11-20 05:33:15,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 104.0) internal successors, (832), 8 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:33:15,652 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 104.0) internal successors, (832), 8 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:33:15,652 INFO L186 Difference]: Start difference. First operand has 98 places, 97 transitions, 280 flow. Second operand 7 states and 542 transitions. [2021-11-20 05:33:15,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 130 transitions, 551 flow [2021-11-20 05:33:15,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 130 transitions, 547 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-11-20 05:33:15,664 INFO L242 Difference]: Finished difference. Result has 105 places, 104 transitions, 373 flow [2021-11-20 05:33:15,665 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=373, PETRI_PLACES=105, PETRI_TRANSITIONS=104} [2021-11-20 05:33:15,667 INFO L334 CegarLoopForPetriNet]: 92 programPoint places, 13 predicate places. [2021-11-20 05:33:15,667 INFO L470 AbstractCegarLoop]: Abstraction has has 105 places, 104 transitions, 373 flow [2021-11-20 05:33:15,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.83333333333333) internal successors, (437), 6 states have internal predecessors, (437), 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) [2021-11-20 05:33:15,668 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:33:15,668 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] [2021-11-20 05:33:15,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 05:33:15,669 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 05:33:15,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:33:15,671 INFO L85 PathProgramCache]: Analyzing trace with hash -809040498, now seen corresponding path program 2 times [2021-11-20 05:33:15,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:33:15,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151340135] [2021-11-20 05:33:15,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:33:15,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:33:15,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:15,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:33:15,908 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:33:15,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151340135] [2021-11-20 05:33:15,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151340135] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:33:15,910 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:33:15,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 05:33:15,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110906345] [2021-11-20 05:33:15,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:33:15,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:33:15,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:33:15,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:33:15,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:33:15,920 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 104 [2021-11-20 05:33:15,921 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 104 transitions, 373 flow. Second operand has 6 states, 6 states have (on average 72.83333333333333) internal successors, (437), 6 states have internal predecessors, (437), 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) [2021-11-20 05:33:15,921 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:33:15,921 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 104 [2021-11-20 05:33:15,921 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:33:16,123 INFO L129 PetriNetUnfolder]: 86/353 cut-off events. [2021-11-20 05:33:16,123 INFO L130 PetriNetUnfolder]: For 343/348 co-relation queries the response was YES. [2021-11-20 05:33:16,125 INFO L84 FinitePrefix]: Finished finitePrefix Result has 816 conditions, 353 events. 86/353 cut-off events. For 343/348 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1489 event pairs, 12 based on Foata normal form. 7/337 useless extension candidates. Maximal degree in co-relation 563. Up to 66 conditions per place. [2021-11-20 05:33:16,129 INFO L132 encePairwiseOnDemand]: 93/104 looper letters, 42 selfloop transitions, 17 changer transitions 4/124 dead transitions. [2021-11-20 05:33:16,129 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 124 transitions, 592 flow [2021-11-20 05:33:16,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 05:33:16,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-11-20 05:33:16,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 535 transitions. [2021-11-20 05:33:16,132 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7348901098901099 [2021-11-20 05:33:16,133 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 535 transitions. [2021-11-20 05:33:16,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 535 transitions. [2021-11-20 05:33:16,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:33:16,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 535 transitions. [2021-11-20 05:33:16,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 76.42857142857143) internal successors, (535), 7 states have internal predecessors, (535), 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) [2021-11-20 05:33:16,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 104.0) internal successors, (832), 8 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:33:16,138 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 104.0) internal successors, (832), 8 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:33:16,138 INFO L186 Difference]: Start difference. First operand has 105 places, 104 transitions, 373 flow. Second operand 7 states and 535 transitions. [2021-11-20 05:33:16,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 124 transitions, 592 flow [2021-11-20 05:33:16,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 124 transitions, 584 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-11-20 05:33:16,149 INFO L242 Difference]: Finished difference. Result has 112 places, 107 transitions, 458 flow [2021-11-20 05:33:16,150 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=458, PETRI_PLACES=112, PETRI_TRANSITIONS=107} [2021-11-20 05:33:16,151 INFO L334 CegarLoopForPetriNet]: 92 programPoint places, 20 predicate places. [2021-11-20 05:33:16,152 INFO L470 AbstractCegarLoop]: Abstraction has has 112 places, 107 transitions, 458 flow [2021-11-20 05:33:16,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.83333333333333) internal successors, (437), 6 states have internal predecessors, (437), 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) [2021-11-20 05:33:16,152 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:33:16,152 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] [2021-11-20 05:33:16,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 05:33:16,153 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 05:33:16,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:33:16,154 INFO L85 PathProgramCache]: Analyzing trace with hash -995906079, now seen corresponding path program 2 times [2021-11-20 05:33:16,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:33:16,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993514813] [2021-11-20 05:33:16,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:33:16,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:33:16,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:16,339 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:33:16,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:33:16,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993514813] [2021-11-20 05:33:16,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993514813] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:33:16,340 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:33:16,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 05:33:16,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234430520] [2021-11-20 05:33:16,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:33:16,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:33:16,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:33:16,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:33:16,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:33:16,344 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 104 [2021-11-20 05:33:16,345 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 107 transitions, 458 flow. Second operand has 6 states, 6 states have (on average 73.0) internal successors, (438), 6 states have internal predecessors, (438), 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) [2021-11-20 05:33:16,345 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:33:16,345 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 104 [2021-11-20 05:33:16,345 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:33:16,554 INFO L129 PetriNetUnfolder]: 84/324 cut-off events. [2021-11-20 05:33:16,554 INFO L130 PetriNetUnfolder]: For 570/570 co-relation queries the response was YES. [2021-11-20 05:33:16,556 INFO L84 FinitePrefix]: Finished finitePrefix Result has 833 conditions, 324 events. 84/324 cut-off events. For 570/570 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1304 event pairs, 11 based on Foata normal form. 1/302 useless extension candidates. Maximal degree in co-relation 636. Up to 85 conditions per place. [2021-11-20 05:33:16,558 INFO L132 encePairwiseOnDemand]: 92/104 looper letters, 46 selfloop transitions, 14 changer transitions 3/124 dead transitions. [2021-11-20 05:33:16,558 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 124 transitions, 659 flow [2021-11-20 05:33:16,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 05:33:16,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-11-20 05:33:16,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 532 transitions. [2021-11-20 05:33:16,562 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7307692307692307 [2021-11-20 05:33:16,562 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 532 transitions. [2021-11-20 05:33:16,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 532 transitions. [2021-11-20 05:33:16,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:33:16,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 532 transitions. [2021-11-20 05:33:16,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 76.0) internal successors, (532), 7 states have internal predecessors, (532), 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) [2021-11-20 05:33:16,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 104.0) internal successors, (832), 8 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:33:16,567 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 104.0) internal successors, (832), 8 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:33:16,567 INFO L186 Difference]: Start difference. First operand has 112 places, 107 transitions, 458 flow. Second operand 7 states and 532 transitions. [2021-11-20 05:33:16,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 124 transitions, 659 flow [2021-11-20 05:33:16,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 124 transitions, 647 flow, removed 4 selfloop flow, removed 2 redundant places. [2021-11-20 05:33:16,576 INFO L242 Difference]: Finished difference. Result has 118 places, 109 transitions, 500 flow [2021-11-20 05:33:16,577 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=432, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=500, PETRI_PLACES=118, PETRI_TRANSITIONS=109} [2021-11-20 05:33:16,580 INFO L334 CegarLoopForPetriNet]: 92 programPoint places, 26 predicate places. [2021-11-20 05:33:16,580 INFO L470 AbstractCegarLoop]: Abstraction has has 118 places, 109 transitions, 500 flow [2021-11-20 05:33:16,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.0) internal successors, (438), 6 states have internal predecessors, (438), 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) [2021-11-20 05:33:16,581 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:33:16,581 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, 1, 1] [2021-11-20 05:33:16,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 05:33:16,581 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 05:33:16,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:33:16,582 INFO L85 PathProgramCache]: Analyzing trace with hash -310513963, now seen corresponding path program 1 times [2021-11-20 05:33:16,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:33:16,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502333909] [2021-11-20 05:33:16,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:33:16,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:33:16,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:16,909 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:33:16,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:33:16,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502333909] [2021-11-20 05:33:16,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502333909] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:33:16,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015657071] [2021-11-20 05:33:16,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:33:16,911 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:33:16,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:33:16,916 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:33:16,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 05:33:17,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:17,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-20 05:33:17,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:33:17,713 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:33:17,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:33:18,353 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:33:18,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015657071] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:33:18,353 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 05:33:18,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2021-11-20 05:33:18,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635420918] [2021-11-20 05:33:18,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 05:33:18,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 05:33:18,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:33:18,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 05:33:18,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2021-11-20 05:33:18,362 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 104 [2021-11-20 05:33:18,365 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 109 transitions, 500 flow. Second operand has 18 states, 18 states have (on average 71.05555555555556) internal successors, (1279), 18 states have internal predecessors, (1279), 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) [2021-11-20 05:33:18,365 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:33:18,365 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 104 [2021-11-20 05:33:18,366 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:33:19,415 INFO L129 PetriNetUnfolder]: 170/557 cut-off events. [2021-11-20 05:33:19,416 INFO L130 PetriNetUnfolder]: For 1193/1193 co-relation queries the response was YES. [2021-11-20 05:33:19,419 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1508 conditions, 557 events. 170/557 cut-off events. For 1193/1193 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2653 event pairs, 6 based on Foata normal form. 9/526 useless extension candidates. Maximal degree in co-relation 1254. Up to 100 conditions per place. [2021-11-20 05:33:19,423 INFO L132 encePairwiseOnDemand]: 91/104 looper letters, 95 selfloop transitions, 33 changer transitions 0/188 dead transitions. [2021-11-20 05:33:19,424 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 188 transitions, 1215 flow [2021-11-20 05:33:19,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-20 05:33:19,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-11-20 05:33:19,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1264 transitions. [2021-11-20 05:33:19,429 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7149321266968326 [2021-11-20 05:33:19,429 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1264 transitions. [2021-11-20 05:33:19,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1264 transitions. [2021-11-20 05:33:19,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:33:19,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1264 transitions. [2021-11-20 05:33:19,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 74.3529411764706) internal successors, (1264), 17 states have internal predecessors, (1264), 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) [2021-11-20 05:33:19,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 104.0) internal successors, (1872), 18 states have internal predecessors, (1872), 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) [2021-11-20 05:33:19,440 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 104.0) internal successors, (1872), 18 states have internal predecessors, (1872), 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) [2021-11-20 05:33:19,440 INFO L186 Difference]: Start difference. First operand has 118 places, 109 transitions, 500 flow. Second operand 17 states and 1264 transitions. [2021-11-20 05:33:19,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 188 transitions, 1215 flow [2021-11-20 05:33:19,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 188 transitions, 1201 flow, removed 5 selfloop flow, removed 2 redundant places. [2021-11-20 05:33:19,451 INFO L242 Difference]: Finished difference. Result has 141 places, 128 transitions, 788 flow [2021-11-20 05:33:19,452 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=788, PETRI_PLACES=141, PETRI_TRANSITIONS=128} [2021-11-20 05:33:19,452 INFO L334 CegarLoopForPetriNet]: 92 programPoint places, 49 predicate places. [2021-11-20 05:33:19,453 INFO L470 AbstractCegarLoop]: Abstraction has has 141 places, 128 transitions, 788 flow [2021-11-20 05:33:19,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 71.05555555555556) internal successors, (1279), 18 states have internal predecessors, (1279), 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) [2021-11-20 05:33:19,454 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:33:19,454 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:33:19,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 05:33:19,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-20 05:33:19,676 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 05:33:19,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:33:19,676 INFO L85 PathProgramCache]: Analyzing trace with hash 261295023, now seen corresponding path program 2 times [2021-11-20 05:33:19,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:33:19,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075426284] [2021-11-20 05:33:19,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:33:19,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:33:19,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:19,789 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:33:19,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:33:19,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075426284] [2021-11-20 05:33:19,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075426284] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:33:19,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:33:19,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 05:33:19,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982226204] [2021-11-20 05:33:19,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:33:19,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:33:19,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:33:19,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:33:19,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:33:19,792 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 104 [2021-11-20 05:33:19,793 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 128 transitions, 788 flow. Second operand has 4 states, 4 states have (on average 90.75) internal successors, (363), 4 states have internal predecessors, (363), 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) [2021-11-20 05:33:19,793 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:33:19,793 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 104 [2021-11-20 05:33:19,794 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:33:19,996 INFO L129 PetriNetUnfolder]: 194/923 cut-off events. [2021-11-20 05:33:19,996 INFO L130 PetriNetUnfolder]: For 2571/2572 co-relation queries the response was YES. [2021-11-20 05:33:20,002 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2619 conditions, 923 events. 194/923 cut-off events. For 2571/2572 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 6419 event pairs, 33 based on Foata normal form. 1/877 useless extension candidates. Maximal degree in co-relation 2435. Up to 143 conditions per place. [2021-11-20 05:33:20,009 INFO L132 encePairwiseOnDemand]: 99/104 looper letters, 22 selfloop transitions, 5 changer transitions 0/142 dead transitions. [2021-11-20 05:33:20,009 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 142 transitions, 886 flow [2021-11-20 05:33:20,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:33:20,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-11-20 05:33:20,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 377 transitions. [2021-11-20 05:33:20,011 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.90625 [2021-11-20 05:33:20,011 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 377 transitions. [2021-11-20 05:33:20,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 377 transitions. [2021-11-20 05:33:20,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:33:20,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 377 transitions. [2021-11-20 05:33:20,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 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) [2021-11-20 05:33:20,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 104.0) internal successors, (520), 5 states have internal predecessors, (520), 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) [2021-11-20 05:33:20,015 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 104.0) internal successors, (520), 5 states have internal predecessors, (520), 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) [2021-11-20 05:33:20,015 INFO L186 Difference]: Start difference. First operand has 141 places, 128 transitions, 788 flow. Second operand 4 states and 377 transitions. [2021-11-20 05:33:20,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 142 transitions, 886 flow [2021-11-20 05:33:20,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 142 transitions, 840 flow, removed 9 selfloop flow, removed 7 redundant places. [2021-11-20 05:33:20,031 INFO L242 Difference]: Finished difference. Result has 140 places, 131 transitions, 776 flow [2021-11-20 05:33:20,032 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=742, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=776, PETRI_PLACES=140, PETRI_TRANSITIONS=131} [2021-11-20 05:33:20,033 INFO L334 CegarLoopForPetriNet]: 92 programPoint places, 48 predicate places. [2021-11-20 05:33:20,033 INFO L470 AbstractCegarLoop]: Abstraction has has 140 places, 131 transitions, 776 flow [2021-11-20 05:33:20,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.75) internal successors, (363), 4 states have internal predecessors, (363), 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) [2021-11-20 05:33:20,033 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:33:20,034 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:33:20,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 05:33:20,034 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 05:33:20,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:33:20,035 INFO L85 PathProgramCache]: Analyzing trace with hash -69367, now seen corresponding path program 1 times [2021-11-20 05:33:20,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:33:20,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057550822] [2021-11-20 05:33:20,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:33:20,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:33:20,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:20,326 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:33:20,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:33:20,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057550822] [2021-11-20 05:33:20,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057550822] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:33:20,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332908702] [2021-11-20 05:33:20,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:33:20,327 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:33:20,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:33:20,328 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:33:20,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 05:33:20,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:20,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 05:33:20,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:33:21,010 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 05:33:21,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:33:22,155 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 05:33:22,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332908702] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:33:22,156 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 05:33:22,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 22 [2021-11-20 05:33:22,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275432902] [2021-11-20 05:33:22,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 05:33:22,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-20 05:33:22,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:33:22,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-20 05:33:22,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2021-11-20 05:33:22,161 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 104 [2021-11-20 05:33:22,164 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 131 transitions, 776 flow. Second operand has 22 states, 22 states have (on average 69.81818181818181) internal successors, (1536), 22 states have internal predecessors, (1536), 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) [2021-11-20 05:33:22,164 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:33:22,164 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 104 [2021-11-20 05:33:22,164 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:33:23,735 INFO L129 PetriNetUnfolder]: 697/1987 cut-off events. [2021-11-20 05:33:23,735 INFO L130 PetriNetUnfolder]: For 7270/7282 co-relation queries the response was YES. [2021-11-20 05:33:23,746 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6902 conditions, 1987 events. 697/1987 cut-off events. For 7270/7282 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 14362 event pairs, 140 based on Foata normal form. 41/1927 useless extension candidates. Maximal degree in co-relation 6020. Up to 430 conditions per place. [2021-11-20 05:33:23,769 INFO L132 encePairwiseOnDemand]: 94/104 looper letters, 122 selfloop transitions, 25 changer transitions 0/209 dead transitions. [2021-11-20 05:33:23,769 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 209 transitions, 1696 flow [2021-11-20 05:33:23,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-20 05:33:23,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-11-20 05:33:23,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 961 transitions. [2021-11-20 05:33:23,773 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7107988165680473 [2021-11-20 05:33:23,773 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 961 transitions. [2021-11-20 05:33:23,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 961 transitions. [2021-11-20 05:33:23,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:33:23,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 961 transitions. [2021-11-20 05:33:23,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 73.92307692307692) internal successors, (961), 13 states have internal predecessors, (961), 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) [2021-11-20 05:33:23,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 104.0) internal successors, (1456), 14 states have internal predecessors, (1456), 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) [2021-11-20 05:33:23,782 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 104.0) internal successors, (1456), 14 states have internal predecessors, (1456), 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) [2021-11-20 05:33:23,782 INFO L186 Difference]: Start difference. First operand has 140 places, 131 transitions, 776 flow. Second operand 13 states and 961 transitions. [2021-11-20 05:33:23,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 209 transitions, 1696 flow [2021-11-20 05:33:23,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 209 transitions, 1696 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-11-20 05:33:23,817 INFO L242 Difference]: Finished difference. Result has 157 places, 144 transitions, 977 flow [2021-11-20 05:33:23,818 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=776, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=977, PETRI_PLACES=157, PETRI_TRANSITIONS=144} [2021-11-20 05:33:23,820 INFO L334 CegarLoopForPetriNet]: 92 programPoint places, 65 predicate places. [2021-11-20 05:33:23,820 INFO L470 AbstractCegarLoop]: Abstraction has has 157 places, 144 transitions, 977 flow [2021-11-20 05:33:23,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 69.81818181818181) internal successors, (1536), 22 states have internal predecessors, (1536), 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) [2021-11-20 05:33:23,822 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:33:23,822 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:33:23,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 05:33:24,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-20 05:33:24,048 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 05:33:24,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:33:24,048 INFO L85 PathProgramCache]: Analyzing trace with hash 427151084, now seen corresponding path program 1 times [2021-11-20 05:33:24,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:33:24,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644450499] [2021-11-20 05:33:24,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:33:24,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:33:24,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:24,173 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 05:33:24,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:33:24,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644450499] [2021-11-20 05:33:24,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644450499] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:33:24,174 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:33:24,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 05:33:24,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67717277] [2021-11-20 05:33:24,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:33:24,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:33:24,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:33:24,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:33:24,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:33:24,177 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 104 [2021-11-20 05:33:24,178 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 144 transitions, 977 flow. Second operand has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 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) [2021-11-20 05:33:24,178 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:33:24,178 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 104 [2021-11-20 05:33:24,178 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:33:24,421 INFO L129 PetriNetUnfolder]: 229/1057 cut-off events. [2021-11-20 05:33:24,422 INFO L130 PetriNetUnfolder]: For 3486/3489 co-relation queries the response was YES. [2021-11-20 05:33:24,430 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3502 conditions, 1057 events. 229/1057 cut-off events. For 3486/3489 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 7284 event pairs, 29 based on Foata normal form. 16/1052 useless extension candidates. Maximal degree in co-relation 3055. Up to 207 conditions per place. [2021-11-20 05:33:24,438 INFO L132 encePairwiseOnDemand]: 100/104 looper letters, 22 selfloop transitions, 6 changer transitions 0/156 dead transitions. [2021-11-20 05:33:24,438 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 156 transitions, 1082 flow [2021-11-20 05:33:24,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:33:24,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-11-20 05:33:24,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 375 transitions. [2021-11-20 05:33:24,440 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9014423076923077 [2021-11-20 05:33:24,441 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 375 transitions. [2021-11-20 05:33:24,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 375 transitions. [2021-11-20 05:33:24,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:33:24,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 375 transitions. [2021-11-20 05:33:24,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 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) [2021-11-20 05:33:24,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 104.0) internal successors, (520), 5 states have internal predecessors, (520), 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) [2021-11-20 05:33:24,444 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 104.0) internal successors, (520), 5 states have internal predecessors, (520), 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) [2021-11-20 05:33:24,444 INFO L186 Difference]: Start difference. First operand has 157 places, 144 transitions, 977 flow. Second operand 4 states and 375 transitions. [2021-11-20 05:33:24,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 156 transitions, 1082 flow [2021-11-20 05:33:24,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 156 transitions, 1069 flow, removed 3 selfloop flow, removed 3 redundant places. [2021-11-20 05:33:24,467 INFO L242 Difference]: Finished difference. Result has 159 places, 146 transitions, 998 flow [2021-11-20 05:33:24,468 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=964, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=998, PETRI_PLACES=159, PETRI_TRANSITIONS=146} [2021-11-20 05:33:24,469 INFO L334 CegarLoopForPetriNet]: 92 programPoint places, 67 predicate places. [2021-11-20 05:33:24,469 INFO L470 AbstractCegarLoop]: Abstraction has has 159 places, 146 transitions, 998 flow [2021-11-20 05:33:24,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 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) [2021-11-20 05:33:24,484 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:33:24,484 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:33:24,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 05:33:24,485 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 05:33:24,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:33:24,485 INFO L85 PathProgramCache]: Analyzing trace with hash -555762570, now seen corresponding path program 2 times [2021-11-20 05:33:24,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:33:24,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918120159] [2021-11-20 05:33:24,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:33:24,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:33:24,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:24,573 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-20 05:33:24,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:33:24,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918120159] [2021-11-20 05:33:24,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918120159] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:33:24,574 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:33:24,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 05:33:24,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621765792] [2021-11-20 05:33:24,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:33:24,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:33:24,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:33:24,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:33:24,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:33:24,577 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 104 [2021-11-20 05:33:24,578 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 146 transitions, 998 flow. Second operand has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 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) [2021-11-20 05:33:24,578 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:33:24,578 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 104 [2021-11-20 05:33:24,578 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:33:25,043 INFO L129 PetriNetUnfolder]: 250/1871 cut-off events. [2021-11-20 05:33:25,043 INFO L130 PetriNetUnfolder]: For 7622/7818 co-relation queries the response was YES. [2021-11-20 05:33:25,057 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6282 conditions, 1871 events. 250/1871 cut-off events. For 7622/7818 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 17373 event pairs, 74 based on Foata normal form. 58/1867 useless extension candidates. Maximal degree in co-relation 5539. Up to 226 conditions per place. [2021-11-20 05:33:25,069 INFO L132 encePairwiseOnDemand]: 99/104 looper letters, 19 selfloop transitions, 5 changer transitions 0/157 dead transitions. [2021-11-20 05:33:25,069 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 157 transitions, 1076 flow [2021-11-20 05:33:25,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:33:25,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-11-20 05:33:25,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 376 transitions. [2021-11-20 05:33:25,071 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9038461538461539 [2021-11-20 05:33:25,071 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 376 transitions. [2021-11-20 05:33:25,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 376 transitions. [2021-11-20 05:33:25,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:33:25,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 376 transitions. [2021-11-20 05:33:25,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 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) [2021-11-20 05:33:25,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 104.0) internal successors, (520), 5 states have internal predecessors, (520), 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) [2021-11-20 05:33:25,075 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 104.0) internal successors, (520), 5 states have internal predecessors, (520), 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) [2021-11-20 05:33:25,075 INFO L186 Difference]: Start difference. First operand has 159 places, 146 transitions, 998 flow. Second operand 4 states and 376 transitions. [2021-11-20 05:33:25,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 157 transitions, 1076 flow [2021-11-20 05:33:25,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 157 transitions, 1076 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-11-20 05:33:25,110 INFO L242 Difference]: Finished difference. Result has 165 places, 149 transitions, 1032 flow [2021-11-20 05:33:25,110 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=998, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1032, PETRI_PLACES=165, PETRI_TRANSITIONS=149} [2021-11-20 05:33:25,111 INFO L334 CegarLoopForPetriNet]: 92 programPoint places, 73 predicate places. [2021-11-20 05:33:25,111 INFO L470 AbstractCegarLoop]: Abstraction has has 165 places, 149 transitions, 1032 flow [2021-11-20 05:33:25,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 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) [2021-11-20 05:33:25,112 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:33:25,112 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:33:25,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-20 05:33:25,112 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 05:33:25,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:33:25,113 INFO L85 PathProgramCache]: Analyzing trace with hash -794008814, now seen corresponding path program 1 times [2021-11-20 05:33:25,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:33:25,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726250444] [2021-11-20 05:33:25,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:33:25,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:33:25,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:25,318 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 05:33:25,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:33:25,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726250444] [2021-11-20 05:33:25,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726250444] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:33:25,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180814828] [2021-11-20 05:33:25,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:33:25,319 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:33:25,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:33:25,324 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:33:25,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 05:33:25,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:25,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-20 05:33:25,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:33:25,760 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 05:33:25,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:33:26,046 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 05:33:26,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180814828] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:33:26,047 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 05:33:26,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2021-11-20 05:33:26,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501992289] [2021-11-20 05:33:26,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 05:33:26,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 05:33:26,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:33:26,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 05:33:26,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-20 05:33:26,052 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 104 [2021-11-20 05:33:26,053 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 149 transitions, 1032 flow. Second operand has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 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) [2021-11-20 05:33:26,054 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:33:26,054 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 104 [2021-11-20 05:33:26,054 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:33:27,264 INFO L129 PetriNetUnfolder]: 647/4047 cut-off events. [2021-11-20 05:33:27,265 INFO L130 PetriNetUnfolder]: For 17622/18104 co-relation queries the response was YES. [2021-11-20 05:33:27,299 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13859 conditions, 4047 events. 647/4047 cut-off events. For 17622/18104 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 42410 event pairs, 81 based on Foata normal form. 90/4048 useless extension candidates. Maximal degree in co-relation 11418. Up to 563 conditions per place. [2021-11-20 05:33:27,327 INFO L132 encePairwiseOnDemand]: 92/104 looper letters, 30 selfloop transitions, 21 changer transitions 4/182 dead transitions. [2021-11-20 05:33:27,327 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 182 transitions, 1242 flow [2021-11-20 05:33:27,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 05:33:27,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-11-20 05:33:27,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 846 transitions. [2021-11-20 05:33:27,331 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8134615384615385 [2021-11-20 05:33:27,331 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 846 transitions. [2021-11-20 05:33:27,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 846 transitions. [2021-11-20 05:33:27,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:33:27,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 846 transitions. [2021-11-20 05:33:27,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 84.6) internal successors, (846), 10 states have internal predecessors, (846), 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) [2021-11-20 05:33:27,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 104.0) internal successors, (1144), 11 states have internal predecessors, (1144), 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) [2021-11-20 05:33:27,338 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 104.0) internal successors, (1144), 11 states have internal predecessors, (1144), 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) [2021-11-20 05:33:27,338 INFO L186 Difference]: Start difference. First operand has 165 places, 149 transitions, 1032 flow. Second operand 10 states and 846 transitions. [2021-11-20 05:33:27,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 182 transitions, 1242 flow [2021-11-20 05:33:27,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 182 transitions, 1242 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-11-20 05:33:27,420 INFO L242 Difference]: Finished difference. Result has 177 places, 161 transitions, 1144 flow [2021-11-20 05:33:27,421 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=1032, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1144, PETRI_PLACES=177, PETRI_TRANSITIONS=161} [2021-11-20 05:33:27,421 INFO L334 CegarLoopForPetriNet]: 92 programPoint places, 85 predicate places. [2021-11-20 05:33:27,421 INFO L470 AbstractCegarLoop]: Abstraction has has 177 places, 161 transitions, 1144 flow [2021-11-20 05:33:27,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 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) [2021-11-20 05:33:27,422 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:33:27,423 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:33:27,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-20 05:33:27,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:33:27,640 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 05:33:27,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:33:27,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1162160800, now seen corresponding path program 2 times [2021-11-20 05:33:27,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:33:27,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658824333] [2021-11-20 05:33:27,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:33:27,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:33:27,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:27,878 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 05:33:27,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:33:27,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658824333] [2021-11-20 05:33:27,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658824333] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:33:27,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160741160] [2021-11-20 05:33:27,879 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 05:33:27,879 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:33:27,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:33:27,884 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:33:27,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 05:33:27,953 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 05:33:27,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:33:27,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-20 05:33:27,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:33:28,347 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 05:33:28,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:33:28,657 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 05:33:28,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160741160] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:33:28,657 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 05:33:28,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2021-11-20 05:33:28,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264269492] [2021-11-20 05:33:28,658 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 05:33:28,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 05:33:28,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:33:28,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 05:33:28,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-20 05:33:28,662 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 104 [2021-11-20 05:33:28,664 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 161 transitions, 1144 flow. Second operand has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 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) [2021-11-20 05:33:28,664 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:33:28,664 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 104 [2021-11-20 05:33:28,665 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:33:29,630 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([254] L49-->L51: Formula: (= v_~pos~0_18 (+ v_~pos~0_17 1)) InVars {~pos~0=v_~pos~0_18} OutVars{thread1Thread1of1ForFork0_#t~post2=|v_thread1Thread1of1ForFork0_#t~post2_1|, ~pos~0=v_~pos~0_17} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_#t~post2, ~pos~0][81], [Black: 1917#(and (<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 723#(and (<= ~d2~0 (* 256 (div ~d2~0 256))) (<= 0 ~d2~0)), 130#(<= (+ ~i2~0 (* 4294967296 (div (* ~N~0 2) 4294967296)) 1) (+ (* 2 ~N~0) (* 4294967296 (div ~i2~0 4294967296)))), 60#L70true, Black: 1915#(and (<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 1922#true, Black: 701#(and (< (* 2147483648 (div (* ~N~0 2) 4294967296)) ~N~0) (<= |thread2Thread1of1ForFork1_#t~post4| (* 4294967296 (div |thread2Thread1of1ForFork1_#t~post4| 4294967296))) (<= ~i2~0 (+ (* 4294967296 (div (+ (- 1) ~i2~0) 4294967296)) 1))), Black: 182#true, Black: 134#(and (<= (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0) (+ (* 4294967296 (div ~i2~0 4294967296)) ~i1~0)) (<= (+ ~i2~0 (* 4294967296 (div (* ~N~0 2) 4294967296)) 1) (+ (* 2 ~N~0) (* 4294967296 (div ~i2~0 4294967296))))), Black: 705#(and (or (<= (mod (* ~N~0 2) 4294967296) (mod ~i1~0 4294967296)) (< (mod (+ ~i2~0 1) 4294967296) (mod (* ~N~0 2) 4294967296))) (< (* 2147483648 (div (* ~N~0 2) 4294967296)) ~N~0) (<= |thread2Thread1of1ForFork1_#t~post4| (* 4294967296 (div |thread2Thread1of1ForFork1_#t~post4| 4294967296))) (<= ~i2~0 (+ (* 4294967296 (div (+ (- 1) ~i2~0) 4294967296)) 1))), Black: 129#(<= (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0) (+ (* 4294967296 (div ~i2~0 4294967296)) ~i1~0)), Black: 403#(and (< (* 2147483648 (div (* ~N~0 2) 4294967296)) ~N~0) (<= ~i2~0 (+ (* 4294967296 (div (+ (- 1) ~i2~0) 4294967296)) 1))), Black: 707#(and (or (<= (mod (* ~N~0 2) 4294967296) (mod ~i1~0 4294967296)) (< (mod (+ ~i2~0 1) 4294967296) (mod (* ~N~0 2) 4294967296))) (< (* 2147483648 (div (* ~N~0 2) 4294967296)) ~N~0) (<= ~i2~0 (+ (* 4294967296 (div (+ (- 1) ~i2~0) 4294967296)) 1))), Black: 125#true, Black: 187#(and (<= ~i2~0 (* 4294967296 (div ~i2~0 4294967296))) (< (* 2147483648 (div (* ~N~0 2) 4294967296)) ~N~0)), Black: 697#(and (= (mod ~i2~0 4294967296) (mod ~i1~0 4294967296)) (< (* 2147483648 (div (* ~N~0 2) 4294967296)) ~N~0) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (= (mod ~i2~0 4294967296) 0)), Black: 548#(or (<= (mod (* ~N~0 2) 4294967296) (mod ~i1~0 4294967296)) (< (mod (+ ~i2~0 1) 4294967296) (mod (* ~N~0 2) 4294967296))), 1310#(= (* 256 (div ~d2~0 256)) ~d2~0), 1092#(< (mod ~i1~0 4294967296) (mod (* ~N~0 2) 4294967296)), Black: 722#(not (= (* 256 (div ~d2~0 256)) ~d2~0)), Black: 145#(<= (+ (* 2 ~N~0) (* 4294967296 (div ~i2~0 4294967296))) (+ ~i2~0 (* 4294967296 (div (* ~N~0 2) 4294967296)))), Black: 720#true, Black: 1291#(and (< (mod ~i1~0 4294967296) (mod (* ~N~0 2) 4294967296)) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (<= (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0) (+ (* 4294967296 (div ~i2~0 4294967296)) ~i1~0)) (= (mod ~i1~0 4294967296) 0)), Black: 1295#(and (= (mod |thread1Thread1of1ForFork0_#t~post3| 4294967296) 0) (= (mod (+ 4294967295 ~i1~0) 4294967296) 0) (< (mod (+ 4294967295 ~i1~0) 4294967296) (mod (* ~N~0 2) 4294967296)) (<= |thread1Thread1of1ForFork0_#t~post3| (* 2 (div (+ (* (div (+ |thread1Thread1of1ForFork0_#t~post3| (* (div ~i2~0 4294967296) 4294967296) (* ~i2~0 (- 1))) 4294967296) 4294967296) ~i2~0 (* (div ~i2~0 4294967296) (- 4294967296))) 2)))), Black: 149#(and (<= (+ (* 2 ~N~0) (* 4294967296 (div ~i2~0 4294967296))) (+ ~i2~0 (* 4294967296 (div (* ~N~0 2) 4294967296)))) (<= (+ (* 4294967296 (div ~i2~0 4294967296)) ~i1~0) (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0))), Black: 144#(<= (+ (* 4294967296 (div ~i2~0 4294967296)) ~i1~0) (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0)), 7#L94-4true, Black: 1297#(and (< (mod ~i1~0 4294967296) (mod (* ~N~0 2) 4294967296)) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (= (mod ~i1~0 4294967296) 0)), Black: 926#(and (= (mod (+ 4294967295 ~i1~0) 4294967296) 0) (< (mod (+ 4294967295 ~i1~0) 4294967296) (mod (* ~N~0 2) 4294967296))), 168#true, Black: 728#true, 476#(< (mod ~i2~0 4294967296) (mod (* ~N~0 2) 4294967296)), Black: 1308#true, 9#L51true, Black: 1311#(and (<= (div ~d2~0 256) 0) (<= 1 ~d2~0)), Black: 154#true, Black: 163#(and (<= (+ (* 4294967296 (div ~i2~0 4294967296)) ~i1~0) (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0)) (<= (+ ~i1~0 (* 4294967296 (div (* ~N~0 2) 4294967296)) 1) (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296))))), Black: 1315#true, Black: 1318#(and (<= (div ~d1~0 256) 0) (<= 1 ~d1~0)), 1323#true, 159#(<= (+ ~i1~0 (* 4294967296 (div (* ~N~0 2) 4294967296)) 1) (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296)))), 1317#(= (* 256 (div ~d1~0 256)) ~d1~0), 140#true, Black: 175#(and (<= (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296))) (+ ~i1~0 (* 4294967296 (div (* ~N~0 2) 4294967296)))) (<= (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0) (+ (* 4294967296 (div ~i2~0 4294967296)) ~i1~0))), Black: 173#(<= (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296))) (+ ~i1~0 (* 4294967296 (div (* ~N~0 2) 4294967296)))), Black: 110#(= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))), Black: 1327#(<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296)))]) [2021-11-20 05:33:29,631 INFO L384 tUnfolder$Statistics]: this new event has 89 ancestors and is cut-off event [2021-11-20 05:33:29,631 INFO L387 tUnfolder$Statistics]: existing Event has 82 ancestors and is cut-off event [2021-11-20 05:33:29,631 INFO L387 tUnfolder$Statistics]: existing Event has 82 ancestors and is cut-off event [2021-11-20 05:33:29,631 INFO L387 tUnfolder$Statistics]: existing Event has 89 ancestors and is cut-off event [2021-11-20 05:33:30,034 INFO L129 PetriNetUnfolder]: 677/4434 cut-off events. [2021-11-20 05:33:30,035 INFO L130 PetriNetUnfolder]: For 20112/20847 co-relation queries the response was YES. [2021-11-20 05:33:30,084 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15791 conditions, 4434 events. 677/4434 cut-off events. For 20112/20847 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 47975 event pairs, 112 based on Foata normal form. 101/4435 useless extension candidates. Maximal degree in co-relation 15608. Up to 849 conditions per place. [2021-11-20 05:33:30,117 INFO L132 encePairwiseOnDemand]: 92/104 looper letters, 40 selfloop transitions, 21 changer transitions 4/192 dead transitions. [2021-11-20 05:33:30,117 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 192 transitions, 1409 flow [2021-11-20 05:33:30,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 05:33:30,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-11-20 05:33:30,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 841 transitions. [2021-11-20 05:33:30,122 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8086538461538462 [2021-11-20 05:33:30,122 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 841 transitions. [2021-11-20 05:33:30,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 841 transitions. [2021-11-20 05:33:30,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:33:30,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 841 transitions. [2021-11-20 05:33:30,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 84.1) internal successors, (841), 10 states have internal predecessors, (841), 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) [2021-11-20 05:33:30,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 104.0) internal successors, (1144), 11 states have internal predecessors, (1144), 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) [2021-11-20 05:33:30,131 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 104.0) internal successors, (1144), 11 states have internal predecessors, (1144), 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) [2021-11-20 05:33:30,131 INFO L186 Difference]: Start difference. First operand has 177 places, 161 transitions, 1144 flow. Second operand 10 states and 841 transitions. [2021-11-20 05:33:30,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 192 transitions, 1409 flow [2021-11-20 05:33:30,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 192 transitions, 1344 flow, removed 27 selfloop flow, removed 5 redundant places. [2021-11-20 05:33:30,245 INFO L242 Difference]: Finished difference. Result has 184 places, 172 transitions, 1247 flow [2021-11-20 05:33:30,246 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=1105, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1247, PETRI_PLACES=184, PETRI_TRANSITIONS=172} [2021-11-20 05:33:30,247 INFO L334 CegarLoopForPetriNet]: 92 programPoint places, 92 predicate places. [2021-11-20 05:33:30,247 INFO L470 AbstractCegarLoop]: Abstraction has has 184 places, 172 transitions, 1247 flow [2021-11-20 05:33:30,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 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) [2021-11-20 05:33:30,248 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:33:30,249 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:33:30,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-20 05:33:30,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:33:30,464 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 05:33:30,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:33:30,464 INFO L85 PathProgramCache]: Analyzing trace with hash -405830240, now seen corresponding path program 3 times [2021-11-20 05:33:30,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:33:30,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448609982] [2021-11-20 05:33:30,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:33:30,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:33:30,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:30,646 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 05:33:30,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:33:30,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448609982] [2021-11-20 05:33:30,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448609982] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:33:30,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273827749] [2021-11-20 05:33:30,647 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 05:33:30,647 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:33:30,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:33:30,648 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:33:30,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-20 05:33:30,894 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-20 05:33:30,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:33:30,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-20 05:33:30,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:33:31,281 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 05:33:31,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:33:31,555 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 05:33:31,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273827749] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:33:31,556 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 05:33:31,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2021-11-20 05:33:31,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878410229] [2021-11-20 05:33:31,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 05:33:31,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 05:33:31,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:33:31,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 05:33:31,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-11-20 05:33:31,563 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 104 [2021-11-20 05:33:31,565 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 172 transitions, 1247 flow. Second operand has 12 states, 12 states have (on average 80.83333333333333) internal successors, (970), 12 states have internal predecessors, (970), 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) [2021-11-20 05:33:31,566 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:33:31,566 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 104 [2021-11-20 05:33:31,566 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:33:32,748 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([254] L49-->L51: Formula: (= v_~pos~0_18 (+ v_~pos~0_17 1)) InVars {~pos~0=v_~pos~0_18} OutVars{thread1Thread1of1ForFork0_#t~post2=|v_thread1Thread1of1ForFork0_#t~post2_1|, ~pos~0=v_~pos~0_17} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_#t~post2, ~pos~0][81], [60#L70true, 130#(<= (+ ~i2~0 (* 4294967296 (div (* ~N~0 2) 4294967296)) 1) (+ (* 2 ~N~0) (* 4294967296 (div ~i2~0 4294967296)))), 723#(and (<= ~d2~0 (* 256 (div ~d2~0 256))) (<= 0 ~d2~0)), 1922#true, Black: 134#(and (<= (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0) (+ (* 4294967296 (div ~i2~0 4294967296)) ~i1~0)) (<= (+ ~i2~0 (* 4294967296 (div (* ~N~0 2) 4294967296)) 1) (+ (* 2 ~N~0) (* 4294967296 (div ~i2~0 4294967296))))), Black: 129#(<= (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0) (+ (* 4294967296 (div ~i2~0 4294967296)) ~i1~0)), Black: 125#true, Black: 145#(<= (+ (* 2 ~N~0) (* 4294967296 (div ~i2~0 4294967296))) (+ ~i2~0 (* 4294967296 (div (* ~N~0 2) 4294967296)))), Black: 1291#(and (< (mod ~i1~0 4294967296) (mod (* ~N~0 2) 4294967296)) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (<= (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0) (+ (* 4294967296 (div ~i2~0 4294967296)) ~i1~0)) (= (mod ~i1~0 4294967296) 0)), Black: 149#(and (<= (+ (* 2 ~N~0) (* 4294967296 (div ~i2~0 4294967296))) (+ ~i2~0 (* 4294967296 (div (* ~N~0 2) 4294967296)))) (<= (+ (* 4294967296 (div ~i2~0 4294967296)) ~i1~0) (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0))), Black: 1295#(and (= (mod |thread1Thread1of1ForFork0_#t~post3| 4294967296) 0) (= (mod (+ 4294967295 ~i1~0) 4294967296) 0) (< (mod (+ 4294967295 ~i1~0) 4294967296) (mod (* ~N~0 2) 4294967296)) (<= |thread1Thread1of1ForFork0_#t~post3| (* 2 (div (+ (* (div (+ |thread1Thread1of1ForFork0_#t~post3| (* (div ~i2~0 4294967296) 4294967296) (* ~i2~0 (- 1))) 4294967296) 4294967296) ~i2~0 (* (div ~i2~0 4294967296) (- 4294967296))) 2)))), Black: 144#(<= (+ (* 4294967296 (div ~i2~0 4294967296)) ~i1~0) (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0)), Black: 1297#(and (< (mod ~i1~0 4294967296) (mod (* ~N~0 2) 4294967296)) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (= (mod ~i1~0 4294967296) 0)), Black: 926#(and (= (mod (+ 4294967295 ~i1~0) 4294967296) 0) (< (mod (+ 4294967295 ~i1~0) 4294967296) (mod (* ~N~0 2) 4294967296))), Black: 728#true, 476#(< (mod ~i2~0 4294967296) (mod (* ~N~0 2) 4294967296)), Black: 1308#true, Black: 1311#(and (<= (div ~d2~0 256) 0) (<= 1 ~d2~0)), 9#L51true, Black: 154#true, Black: 163#(and (<= (+ (* 4294967296 (div ~i2~0 4294967296)) ~i1~0) (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0)) (<= (+ ~i1~0 (* 4294967296 (div (* ~N~0 2) 4294967296)) 1) (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296))))), Black: 1315#true, Black: 1318#(and (<= (div ~d1~0 256) 0) (<= 1 ~d1~0)), 1323#true, Black: 175#(and (<= (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296))) (+ ~i1~0 (* 4294967296 (div (* ~N~0 2) 4294967296)))) (<= (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0) (+ (* 4294967296 (div ~i2~0 4294967296)) ~i1~0))), Black: 173#(<= (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296))) (+ ~i1~0 (* 4294967296 (div (* ~N~0 2) 4294967296)))), Black: 701#(and (< (* 2147483648 (div (* ~N~0 2) 4294967296)) ~N~0) (<= |thread2Thread1of1ForFork1_#t~post4| (* 4294967296 (div |thread2Thread1of1ForFork1_#t~post4| 4294967296))) (<= ~i2~0 (+ (* 4294967296 (div (+ (- 1) ~i2~0) 4294967296)) 1))), Black: 182#true, Black: 705#(and (or (<= (mod (* ~N~0 2) 4294967296) (mod ~i1~0 4294967296)) (< (mod (+ ~i2~0 1) 4294967296) (mod (* ~N~0 2) 4294967296))) (< (* 2147483648 (div (* ~N~0 2) 4294967296)) ~N~0) (<= |thread2Thread1of1ForFork1_#t~post4| (* 4294967296 (div |thread2Thread1of1ForFork1_#t~post4| 4294967296))) (<= ~i2~0 (+ (* 4294967296 (div (+ (- 1) ~i2~0) 4294967296)) 1))), Black: 403#(and (< (* 2147483648 (div (* ~N~0 2) 4294967296)) ~N~0) (<= ~i2~0 (+ (* 4294967296 (div (+ (- 1) ~i2~0) 4294967296)) 1))), Black: 707#(and (or (<= (mod (* ~N~0 2) 4294967296) (mod ~i1~0 4294967296)) (< (mod (+ ~i2~0 1) 4294967296) (mod (* ~N~0 2) 4294967296))) (< (* 2147483648 (div (* ~N~0 2) 4294967296)) ~N~0) (<= ~i2~0 (+ (* 4294967296 (div (+ (- 1) ~i2~0) 4294967296)) 1))), Black: 187#(and (<= ~i2~0 (* 4294967296 (div ~i2~0 4294967296))) (< (* 2147483648 (div (* ~N~0 2) 4294967296)) ~N~0)), Black: 697#(and (= (mod ~i2~0 4294967296) (mod ~i1~0 4294967296)) (< (* 2147483648 (div (* ~N~0 2) 4294967296)) ~N~0) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (= (mod ~i2~0 4294967296) 0)), Black: 548#(or (<= (mod (* ~N~0 2) 4294967296) (mod ~i1~0 4294967296)) (< (mod (+ ~i2~0 1) 4294967296) (mod (* ~N~0 2) 4294967296))), 1310#(= (* 256 (div ~d2~0 256)) ~d2~0), 1092#(< (mod ~i1~0 4294967296) (mod (* ~N~0 2) 4294967296)), Black: 2516#(and (<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 722#(not (= (* 256 (div ~d2~0 256)) ~d2~0)), Black: 2514#(and (<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 720#true, Black: 1928#(<= (+ ~pos~0 3) (* 4294967296 (div (+ ~pos~0 3) 4294967296))), 7#L94-4true, Black: 1926#(<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))), Black: 1927#(<= (+ ~pos~0 1) (* 4294967296 (div (+ ~pos~0 1) 4294967296))), 168#true, 159#(<= (+ ~i1~0 (* 4294967296 (div (* ~N~0 2) 4294967296)) 1) (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296)))), 1317#(= (* 256 (div ~d1~0 256)) ~d1~0), 140#true, 2523#true, Black: 110#(= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))), Black: 1327#(<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296)))]) [2021-11-20 05:33:32,749 INFO L384 tUnfolder$Statistics]: this new event has 89 ancestors and is cut-off event [2021-11-20 05:33:32,749 INFO L387 tUnfolder$Statistics]: existing Event has 89 ancestors and is cut-off event [2021-11-20 05:33:32,749 INFO L387 tUnfolder$Statistics]: existing Event has 82 ancestors and is cut-off event [2021-11-20 05:33:32,749 INFO L387 tUnfolder$Statistics]: existing Event has 89 ancestors and is cut-off event [2021-11-20 05:33:33,131 INFO L129 PetriNetUnfolder]: 832/5917 cut-off events. [2021-11-20 05:33:33,132 INFO L130 PetriNetUnfolder]: For 26469/27122 co-relation queries the response was YES. [2021-11-20 05:33:33,173 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20807 conditions, 5917 events. 832/5917 cut-off events. For 26469/27122 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 69832 event pairs, 134 based on Foata normal form. 159/5970 useless extension candidates. Maximal degree in co-relation 20560. Up to 870 conditions per place. [2021-11-20 05:33:33,199 INFO L132 encePairwiseOnDemand]: 92/104 looper letters, 46 selfloop transitions, 34 changer transitions 4/211 dead transitions. [2021-11-20 05:33:33,200 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 211 transitions, 1586 flow [2021-11-20 05:33:33,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 05:33:33,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-11-20 05:33:33,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 931 transitions. [2021-11-20 05:33:33,204 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8138111888111889 [2021-11-20 05:33:33,204 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 931 transitions. [2021-11-20 05:33:33,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 931 transitions. [2021-11-20 05:33:33,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:33:33,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 931 transitions. [2021-11-20 05:33:33,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 84.63636363636364) internal successors, (931), 11 states have internal predecessors, (931), 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) [2021-11-20 05:33:33,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 104.0) internal successors, (1248), 12 states have internal predecessors, (1248), 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) [2021-11-20 05:33:33,213 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 104.0) internal successors, (1248), 12 states have internal predecessors, (1248), 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) [2021-11-20 05:33:33,213 INFO L186 Difference]: Start difference. First operand has 184 places, 172 transitions, 1247 flow. Second operand 11 states and 931 transitions. [2021-11-20 05:33:33,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 211 transitions, 1586 flow [2021-11-20 05:33:33,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 211 transitions, 1555 flow, removed 11 selfloop flow, removed 5 redundant places. [2021-11-20 05:33:33,328 INFO L242 Difference]: Finished difference. Result has 190 places, 185 transitions, 1405 flow [2021-11-20 05:33:33,328 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=1230, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1405, PETRI_PLACES=190, PETRI_TRANSITIONS=185} [2021-11-20 05:33:33,329 INFO L334 CegarLoopForPetriNet]: 92 programPoint places, 98 predicate places. [2021-11-20 05:33:33,329 INFO L470 AbstractCegarLoop]: Abstraction has has 190 places, 185 transitions, 1405 flow [2021-11-20 05:33:33,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 80.83333333333333) internal successors, (970), 12 states have internal predecessors, (970), 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) [2021-11-20 05:33:33,330 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:33:33,330 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:33:33,335 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-20 05:33:33,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:33:33,535 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 05:33:33,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:33:33,537 INFO L85 PathProgramCache]: Analyzing trace with hash 64345376, now seen corresponding path program 4 times [2021-11-20 05:33:33,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:33:33,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401683091] [2021-11-20 05:33:33,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:33:33,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:33:33,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:33,762 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 05:33:33,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:33:33,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401683091] [2021-11-20 05:33:33,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401683091] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:33:33,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525117229] [2021-11-20 05:33:33,763 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-20 05:33:33,763 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:33:33,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:33:33,767 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:33:33,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-20 05:33:33,834 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-20 05:33:33,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:33:33,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-20 05:33:33,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:33:34,234 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 05:33:34,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:33:34,464 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 05:33:34,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525117229] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:33:34,465 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 05:33:34,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2021-11-20 05:33:34,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621452360] [2021-11-20 05:33:34,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 05:33:34,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 05:33:34,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:33:34,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 05:33:34,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-11-20 05:33:34,468 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 104 [2021-11-20 05:33:34,470 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 185 transitions, 1405 flow. Second operand has 12 states, 12 states have (on average 80.83333333333333) internal successors, (970), 12 states have internal predecessors, (970), 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) [2021-11-20 05:33:34,470 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:33:34,470 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 104 [2021-11-20 05:33:34,470 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:33:35,445 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([247] L42-1-->L42-2: Formula: (not (< (mod v_~i1~0_1 4294967296) (mod (* v_~N~0_1 2) 4294967296))) InVars {~i1~0=v_~i1~0_1, ~N~0=v_~N~0_1} OutVars{~i1~0=v_~i1~0_1, ~N~0=v_~N~0_1} AuxVars[] AssignedVars[][181], [723#(and (<= ~d2~0 (* 256 (div ~d2~0 256))) (<= 0 ~d2~0)), 154#true, 1922#true, Black: 130#(<= (+ ~i2~0 (* 4294967296 (div (* ~N~0 2) 4294967296)) 1) (+ (* 2 ~N~0) (* 4294967296 (div ~i2~0 4294967296)))), Black: 134#(and (<= (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0) (+ (* 4294967296 (div ~i2~0 4294967296)) ~i1~0)) (<= (+ ~i2~0 (* 4294967296 (div (* ~N~0 2) 4294967296)) 1) (+ (* 2 ~N~0) (* 4294967296 (div ~i2~0 4294967296))))), Black: 129#(<= (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0) (+ (* 4294967296 (div ~i2~0 4294967296)) ~i1~0)), 101#L42-2true, Black: 1291#(and (< (mod ~i1~0 4294967296) (mod (* ~N~0 2) 4294967296)) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (<= (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0) (+ (* 4294967296 (div ~i2~0 4294967296)) ~i1~0)) (= (mod ~i1~0 4294967296) 0)), Black: 145#(<= (+ (* 2 ~N~0) (* 4294967296 (div ~i2~0 4294967296))) (+ ~i2~0 (* 4294967296 (div (* ~N~0 2) 4294967296)))), Black: 149#(and (<= (+ (* 2 ~N~0) (* 4294967296 (div ~i2~0 4294967296))) (+ ~i2~0 (* 4294967296 (div (* ~N~0 2) 4294967296)))) (<= (+ (* 4294967296 (div ~i2~0 4294967296)) ~i1~0) (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0))), Black: 1295#(and (= (mod |thread1Thread1of1ForFork0_#t~post3| 4294967296) 0) (= (mod (+ 4294967295 ~i1~0) 4294967296) 0) (< (mod (+ 4294967295 ~i1~0) 4294967296) (mod (* ~N~0 2) 4294967296)) (<= |thread1Thread1of1ForFork0_#t~post3| (* 2 (div (+ (* (div (+ |thread1Thread1of1ForFork0_#t~post3| (* (div ~i2~0 4294967296) 4294967296) (* ~i2~0 (- 1))) 4294967296) 4294967296) ~i2~0 (* (div ~i2~0 4294967296) (- 4294967296))) 2)))), Black: 1297#(and (< (mod ~i1~0 4294967296) (mod (* ~N~0 2) 4294967296)) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (= (mod ~i1~0 4294967296) 0)), Black: 144#(<= (+ (* 4294967296 (div ~i2~0 4294967296)) ~i1~0) (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0)), Black: 926#(and (= (mod (+ 4294967295 ~i1~0) 4294967296) 0) (< (mod (+ 4294967295 ~i1~0) 4294967296) (mod (* ~N~0 2) 4294967296))), Black: 1308#true, Black: 1311#(and (<= (div ~d2~0 256) 0) (<= 1 ~d2~0)), Black: 159#(<= (+ ~i1~0 (* 4294967296 (div (* ~N~0 2) 4294967296)) 1) (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296)))), Black: 163#(and (<= (+ (* 4294967296 (div ~i2~0 4294967296)) ~i1~0) (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0)) (<= (+ ~i1~0 (* 4294967296 (div (* ~N~0 2) 4294967296)) 1) (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296))))), Black: 1315#true, Black: 1317#(= (* 256 (div ~d1~0 256)) ~d1~0), 1323#true, 173#(<= (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296))) (+ ~i1~0 (* 4294967296 (div (* ~N~0 2) 4294967296)))), 548#(or (<= (mod (* ~N~0 2) 4294967296) (mod ~i1~0 4294967296)) (< (mod (+ ~i2~0 1) 4294967296) (mod (* ~N~0 2) 4294967296))), 125#true, Black: 2527#(<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))), Black: 3116#(and (<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 3118#(and (<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 175#(and (<= (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296))) (+ ~i1~0 (* 4294967296 (div (* ~N~0 2) 4294967296)))) (<= (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0) (+ (* 4294967296 (div ~i2~0 4294967296)) ~i1~0))), 728#true, Black: 701#(and (< (* 2147483648 (div (* ~N~0 2) 4294967296)) ~N~0) (<= |thread2Thread1of1ForFork1_#t~post4| (* 4294967296 (div |thread2Thread1of1ForFork1_#t~post4| 4294967296))) (<= ~i2~0 (+ (* 4294967296 (div (+ (- 1) ~i2~0) 4294967296)) 1))), Black: 182#true, Black: 705#(and (or (<= (mod (* ~N~0 2) 4294967296) (mod ~i1~0 4294967296)) (< (mod (+ ~i2~0 1) 4294967296) (mod (* ~N~0 2) 4294967296))) (< (* 2147483648 (div (* ~N~0 2) 4294967296)) ~N~0) (<= |thread2Thread1of1ForFork1_#t~post4| (* 4294967296 (div |thread2Thread1of1ForFork1_#t~post4| 4294967296))) (<= ~i2~0 (+ (* 4294967296 (div (+ (- 1) ~i2~0) 4294967296)) 1))), Black: 403#(and (< (* 2147483648 (div (* ~N~0 2) 4294967296)) ~N~0) (<= ~i2~0 (+ (* 4294967296 (div (+ (- 1) ~i2~0) 4294967296)) 1))), Black: 707#(and (or (<= (mod (* ~N~0 2) 4294967296) (mod ~i1~0 4294967296)) (< (mod (+ ~i2~0 1) 4294967296) (mod (* ~N~0 2) 4294967296))) (< (* 2147483648 (div (* ~N~0 2) 4294967296)) ~N~0) (<= ~i2~0 (+ (* 4294967296 (div (+ (- 1) ~i2~0) 4294967296)) 1))), Black: 187#(and (<= ~i2~0 (* 4294967296 (div ~i2~0 4294967296))) (< (* 2147483648 (div (* ~N~0 2) 4294967296)) ~N~0)), Black: 697#(and (= (mod ~i2~0 4294967296) (mod ~i1~0 4294967296)) (< (* 2147483648 (div (* ~N~0 2) 4294967296)) ~N~0) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (= (mod ~i2~0 4294967296) 0)), Black: 476#(< (mod ~i2~0 4294967296) (mod (* ~N~0 2) 4294967296)), 1310#(= (* 256 (div ~d2~0 256)) ~d2~0), 3123#true, Black: 722#(not (= (* 256 (div ~d2~0 256)) ~d2~0)), Black: 720#true, Black: 1928#(<= (+ ~pos~0 3) (* 4294967296 (div (+ ~pos~0 3) 4294967296))), Black: 1926#(<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))), 7#L94-4true, Black: 1927#(<= (+ ~pos~0 1) (* 4294967296 (div (+ ~pos~0 1) 4294967296))), 75#L73-2true, 140#true, 1318#(and (<= (div ~d1~0 256) 0) (<= 1 ~d1~0)), 2523#true, Black: 110#(= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))), Black: 1327#(<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296)))]) [2021-11-20 05:33:35,445 INFO L384 tUnfolder$Statistics]: this new event has 90 ancestors and is cut-off event [2021-11-20 05:33:35,445 INFO L387 tUnfolder$Statistics]: existing Event has 83 ancestors and is cut-off event [2021-11-20 05:33:35,445 INFO L387 tUnfolder$Statistics]: existing Event has 76 ancestors and is cut-off event [2021-11-20 05:33:35,446 INFO L387 tUnfolder$Statistics]: existing Event has 83 ancestors and is cut-off event [2021-11-20 05:33:35,517 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([260] L61-1-->L61-2: Formula: (not (< (mod v_~i2~0_1 4294967296) (mod (* v_~N~0_3 2) 4294967296))) InVars {~i2~0=v_~i2~0_1, ~N~0=v_~N~0_3} OutVars{~i2~0=v_~i2~0_1, ~N~0=v_~N~0_3} AuxVars[] AssignedVars[][152], [723#(and (<= ~d2~0 (* 256 (div ~d2~0 256))) (<= 0 ~d2~0)), 154#true, 1922#true, Black: 130#(<= (+ ~i2~0 (* 4294967296 (div (* ~N~0 2) 4294967296)) 1) (+ (* 2 ~N~0) (* 4294967296 (div ~i2~0 4294967296)))), Black: 134#(and (<= (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0) (+ (* 4294967296 (div ~i2~0 4294967296)) ~i1~0)) (<= (+ ~i2~0 (* 4294967296 (div (* ~N~0 2) 4294967296)) 1) (+ (* 2 ~N~0) (* 4294967296 (div ~i2~0 4294967296))))), Black: 129#(<= (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0) (+ (* 4294967296 (div ~i2~0 4294967296)) ~i1~0)), Black: 1291#(and (< (mod ~i1~0 4294967296) (mod (* ~N~0 2) 4294967296)) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (<= (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0) (+ (* 4294967296 (div ~i2~0 4294967296)) ~i1~0)) (= (mod ~i1~0 4294967296) 0)), Black: 149#(and (<= (+ (* 2 ~N~0) (* 4294967296 (div ~i2~0 4294967296))) (+ ~i2~0 (* 4294967296 (div (* ~N~0 2) 4294967296)))) (<= (+ (* 4294967296 (div ~i2~0 4294967296)) ~i1~0) (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0))), Black: 1295#(and (= (mod |thread1Thread1of1ForFork0_#t~post3| 4294967296) 0) (= (mod (+ 4294967295 ~i1~0) 4294967296) 0) (< (mod (+ 4294967295 ~i1~0) 4294967296) (mod (* ~N~0 2) 4294967296)) (<= |thread1Thread1of1ForFork0_#t~post3| (* 2 (div (+ (* (div (+ |thread1Thread1of1ForFork0_#t~post3| (* (div ~i2~0 4294967296) 4294967296) (* ~i2~0 (- 1))) 4294967296) 4294967296) ~i2~0 (* (div ~i2~0 4294967296) (- 4294967296))) 2)))), Black: 1297#(and (< (mod ~i1~0 4294967296) (mod (* ~N~0 2) 4294967296)) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (= (mod ~i1~0 4294967296) 0)), Black: 144#(<= (+ (* 4294967296 (div ~i2~0 4294967296)) ~i1~0) (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0)), Black: 926#(and (= (mod (+ 4294967295 ~i1~0) 4294967296) 0) (< (mod (+ 4294967295 ~i1~0) 4294967296) (mod (* ~N~0 2) 4294967296))), Black: 1308#true, Black: 1311#(and (<= (div ~d2~0 256) 0) (<= 1 ~d2~0)), Black: 159#(<= (+ ~i1~0 (* 4294967296 (div (* ~N~0 2) 4294967296)) 1) (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296)))), Black: 163#(and (<= (+ (* 4294967296 (div ~i2~0 4294967296)) ~i1~0) (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0)) (<= (+ ~i1~0 (* 4294967296 (div (* ~N~0 2) 4294967296)) 1) (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296))))), Black: 1315#true, Black: 1317#(= (* 256 (div ~d1~0 256)) ~d1~0), 1323#true, 52#L61-2true, 125#true, Black: 2527#(<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))), 182#true, Black: 3116#(and (<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 3118#(and (<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 175#(and (<= (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296))) (+ ~i1~0 (* 4294967296 (div (* ~N~0 2) 4294967296)))) (<= (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0) (+ (* 4294967296 (div ~i2~0 4294967296)) ~i1~0))), Black: 173#(<= (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296))) (+ ~i1~0 (* 4294967296 (div (* ~N~0 2) 4294967296)))), 728#true, 145#(<= (+ (* 2 ~N~0) (* 4294967296 (div ~i2~0 4294967296))) (+ ~i2~0 (* 4294967296 (div (* ~N~0 2) 4294967296)))), Black: 701#(and (< (* 2147483648 (div (* ~N~0 2) 4294967296)) ~N~0) (<= |thread2Thread1of1ForFork1_#t~post4| (* 4294967296 (div |thread2Thread1of1ForFork1_#t~post4| 4294967296))) (<= ~i2~0 (+ (* 4294967296 (div (+ (- 1) ~i2~0) 4294967296)) 1))), Black: 705#(and (or (<= (mod (* ~N~0 2) 4294967296) (mod ~i1~0 4294967296)) (< (mod (+ ~i2~0 1) 4294967296) (mod (* ~N~0 2) 4294967296))) (< (* 2147483648 (div (* ~N~0 2) 4294967296)) ~N~0) (<= |thread2Thread1of1ForFork1_#t~post4| (* 4294967296 (div |thread2Thread1of1ForFork1_#t~post4| 4294967296))) (<= ~i2~0 (+ (* 4294967296 (div (+ (- 1) ~i2~0) 4294967296)) 1))), Black: 403#(and (< (* 2147483648 (div (* ~N~0 2) 4294967296)) ~N~0) (<= ~i2~0 (+ (* 4294967296 (div (+ (- 1) ~i2~0) 4294967296)) 1))), Black: 707#(and (or (<= (mod (* ~N~0 2) 4294967296) (mod ~i1~0 4294967296)) (< (mod (+ ~i2~0 1) 4294967296) (mod (* ~N~0 2) 4294967296))) (< (* 2147483648 (div (* ~N~0 2) 4294967296)) ~N~0) (<= ~i2~0 (+ (* 4294967296 (div (+ (- 1) ~i2~0) 4294967296)) 1))), Black: 187#(and (<= ~i2~0 (* 4294967296 (div ~i2~0 4294967296))) (< (* 2147483648 (div (* ~N~0 2) 4294967296)) ~N~0)), Black: 697#(and (= (mod ~i2~0 4294967296) (mod ~i1~0 4294967296)) (< (* 2147483648 (div (* ~N~0 2) 4294967296)) ~N~0) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (= (mod ~i2~0 4294967296) 0)), Black: 548#(or (<= (mod (* ~N~0 2) 4294967296) (mod ~i1~0 4294967296)) (< (mod (+ ~i2~0 1) 4294967296) (mod (* ~N~0 2) 4294967296))), Black: 476#(< (mod ~i2~0 4294967296) (mod (* ~N~0 2) 4294967296)), 1310#(= (* 256 (div ~d2~0 256)) ~d2~0), 3123#true, Black: 722#(not (= (* 256 (div ~d2~0 256)) ~d2~0)), Black: 720#true, Black: 1928#(<= (+ ~pos~0 3) (* 4294967296 (div (+ ~pos~0 3) 4294967296))), Black: 1926#(<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))), 7#L94-4true, Black: 1927#(<= (+ ~pos~0 1) (* 4294967296 (div (+ ~pos~0 1) 4294967296))), 168#true, 29#L54-2true, 1318#(and (<= (div ~d1~0 256) 0) (<= 1 ~d1~0)), 2523#true, Black: 110#(= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))), Black: 1327#(<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296)))]) [2021-11-20 05:33:35,518 INFO L384 tUnfolder$Statistics]: this new event has 90 ancestors and is cut-off event [2021-11-20 05:33:35,518 INFO L387 tUnfolder$Statistics]: existing Event has 83 ancestors and is cut-off event [2021-11-20 05:33:35,518 INFO L387 tUnfolder$Statistics]: existing Event has 76 ancestors and is cut-off event [2021-11-20 05:33:35,518 INFO L387 tUnfolder$Statistics]: existing Event has 83 ancestors and is cut-off event [2021-11-20 05:33:35,705 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([247] L42-1-->L42-2: Formula: (not (< (mod v_~i1~0_1 4294967296) (mod (* v_~N~0_1 2) 4294967296))) InVars {~i1~0=v_~i1~0_1, ~N~0=v_~N~0_1} OutVars{~i1~0=v_~i1~0_1, ~N~0=v_~N~0_1} AuxVars[] AssignedVars[][184], [723#(and (<= ~d2~0 (* 256 (div ~d2~0 256))) (<= 0 ~d2~0)), 154#true, 1922#true, Black: 130#(<= (+ ~i2~0 (* 4294967296 (div (* ~N~0 2) 4294967296)) 1) (+ (* 2 ~N~0) (* 4294967296 (div ~i2~0 4294967296)))), Black: 129#(<= (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0) (+ (* 4294967296 (div ~i2~0 4294967296)) ~i1~0)), 134#(and (<= (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0) (+ (* 4294967296 (div ~i2~0 4294967296)) ~i1~0)) (<= (+ ~i2~0 (* 4294967296 (div (* ~N~0 2) 4294967296)) 1) (+ (* 2 ~N~0) (* 4294967296 (div ~i2~0 4294967296))))), Black: 125#true, 101#L42-2true, Black: 1291#(and (< (mod ~i1~0 4294967296) (mod (* ~N~0 2) 4294967296)) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (<= (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0) (+ (* 4294967296 (div ~i2~0 4294967296)) ~i1~0)) (= (mod ~i1~0 4294967296) 0)), Black: 145#(<= (+ (* 2 ~N~0) (* 4294967296 (div ~i2~0 4294967296))) (+ ~i2~0 (* 4294967296 (div (* ~N~0 2) 4294967296)))), Black: 149#(and (<= (+ (* 2 ~N~0) (* 4294967296 (div ~i2~0 4294967296))) (+ ~i2~0 (* 4294967296 (div (* ~N~0 2) 4294967296)))) (<= (+ (* 4294967296 (div ~i2~0 4294967296)) ~i1~0) (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0))), Black: 1295#(and (= (mod |thread1Thread1of1ForFork0_#t~post3| 4294967296) 0) (= (mod (+ 4294967295 ~i1~0) 4294967296) 0) (< (mod (+ 4294967295 ~i1~0) 4294967296) (mod (* ~N~0 2) 4294967296)) (<= |thread1Thread1of1ForFork0_#t~post3| (* 2 (div (+ (* (div (+ |thread1Thread1of1ForFork0_#t~post3| (* (div ~i2~0 4294967296) 4294967296) (* ~i2~0 (- 1))) 4294967296) 4294967296) ~i2~0 (* (div ~i2~0 4294967296) (- 4294967296))) 2)))), Black: 1297#(and (< (mod ~i1~0 4294967296) (mod (* ~N~0 2) 4294967296)) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (= (mod ~i1~0 4294967296) 0)), Black: 144#(<= (+ (* 4294967296 (div ~i2~0 4294967296)) ~i1~0) (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0)), Black: 926#(and (= (mod (+ 4294967295 ~i1~0) 4294967296) 0) (< (mod (+ 4294967295 ~i1~0) 4294967296) (mod (* ~N~0 2) 4294967296))), Black: 1308#true, Black: 1311#(and (<= (div ~d2~0 256) 0) (<= 1 ~d2~0)), 26#L62true, Black: 159#(<= (+ ~i1~0 (* 4294967296 (div (* ~N~0 2) 4294967296)) 1) (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296)))), Black: 163#(and (<= (+ (* 4294967296 (div ~i2~0 4294967296)) ~i1~0) (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0)) (<= (+ ~i1~0 (* 4294967296 (div (* ~N~0 2) 4294967296)) 1) (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296))))), Black: 1315#true, Black: 1317#(= (* 256 (div ~d1~0 256)) ~d1~0), 1323#true, 173#(<= (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296))) (+ ~i1~0 (* 4294967296 (div (* ~N~0 2) 4294967296)))), Black: 2527#(<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))), Black: 3116#(and (<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 3118#(and (<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 175#(and (<= (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296))) (+ ~i1~0 (* 4294967296 (div (* ~N~0 2) 4294967296)))) (<= (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0) (+ (* 4294967296 (div ~i2~0 4294967296)) ~i1~0))), 728#true, Black: 701#(and (< (* 2147483648 (div (* ~N~0 2) 4294967296)) ~N~0) (<= |thread2Thread1of1ForFork1_#t~post4| (* 4294967296 (div |thread2Thread1of1ForFork1_#t~post4| 4294967296))) (<= ~i2~0 (+ (* 4294967296 (div (+ (- 1) ~i2~0) 4294967296)) 1))), Black: 182#true, Black: 705#(and (or (<= (mod (* ~N~0 2) 4294967296) (mod ~i1~0 4294967296)) (< (mod (+ ~i2~0 1) 4294967296) (mod (* ~N~0 2) 4294967296))) (< (* 2147483648 (div (* ~N~0 2) 4294967296)) ~N~0) (<= |thread2Thread1of1ForFork1_#t~post4| (* 4294967296 (div |thread2Thread1of1ForFork1_#t~post4| 4294967296))) (<= ~i2~0 (+ (* 4294967296 (div (+ (- 1) ~i2~0) 4294967296)) 1))), Black: 403#(and (< (* 2147483648 (div (* ~N~0 2) 4294967296)) ~N~0) (<= ~i2~0 (+ (* 4294967296 (div (+ (- 1) ~i2~0) 4294967296)) 1))), Black: 707#(and (or (<= (mod (* ~N~0 2) 4294967296) (mod ~i1~0 4294967296)) (< (mod (+ ~i2~0 1) 4294967296) (mod (* ~N~0 2) 4294967296))) (< (* 2147483648 (div (* ~N~0 2) 4294967296)) ~N~0) (<= ~i2~0 (+ (* 4294967296 (div (+ (- 1) ~i2~0) 4294967296)) 1))), Black: 187#(and (<= ~i2~0 (* 4294967296 (div ~i2~0 4294967296))) (< (* 2147483648 (div (* ~N~0 2) 4294967296)) ~N~0)), Black: 697#(and (= (mod ~i2~0 4294967296) (mod ~i1~0 4294967296)) (< (* 2147483648 (div (* ~N~0 2) 4294967296)) ~N~0) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (= (mod ~i2~0 4294967296) 0)), Black: 548#(or (<= (mod (* ~N~0 2) 4294967296) (mod ~i1~0 4294967296)) (< (mod (+ ~i2~0 1) 4294967296) (mod (* ~N~0 2) 4294967296))), Black: 476#(< (mod ~i2~0 4294967296) (mod (* ~N~0 2) 4294967296)), 1310#(= (* 256 (div ~d2~0 256)) ~d2~0), 3123#true, Black: 722#(not (= (* 256 (div ~d2~0 256)) ~d2~0)), Black: 720#true, Black: 1928#(<= (+ ~pos~0 3) (* 4294967296 (div (+ ~pos~0 3) 4294967296))), Black: 1926#(<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))), 7#L94-4true, Black: 1927#(<= (+ ~pos~0 1) (* 4294967296 (div (+ ~pos~0 1) 4294967296))), 709#(and (or (<= (mod (* ~N~0 2) 4294967296) (mod ~i1~0 4294967296)) (< (mod (+ ~i2~0 1) 4294967296) (mod (* ~N~0 2) 4294967296))) (< (mod ~i2~0 4294967296) (mod (* ~N~0 2) 4294967296))), 140#true, 1318#(and (<= (div ~d1~0 256) 0) (<= 1 ~d1~0)), 2523#true, Black: 110#(= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))), Black: 1327#(<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296)))]) [2021-11-20 05:33:35,705 INFO L384 tUnfolder$Statistics]: this new event has 92 ancestors and is cut-off event [2021-11-20 05:33:35,705 INFO L387 tUnfolder$Statistics]: existing Event has 85 ancestors and is cut-off event [2021-11-20 05:33:35,705 INFO L387 tUnfolder$Statistics]: existing Event has 78 ancestors and is cut-off event [2021-11-20 05:33:35,705 INFO L387 tUnfolder$Statistics]: existing Event has 85 ancestors and is cut-off event [2021-11-20 05:33:36,254 INFO L129 PetriNetUnfolder]: 1176/8183 cut-off events. [2021-11-20 05:33:36,254 INFO L130 PetriNetUnfolder]: For 39632/40653 co-relation queries the response was YES. [2021-11-20 05:33:36,304 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29454 conditions, 8183 events. 1176/8183 cut-off events. For 39632/40653 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 104266 event pairs, 141 based on Foata normal form. 225/8267 useless extension candidates. Maximal degree in co-relation 29105. Up to 995 conditions per place. [2021-11-20 05:33:36,335 INFO L132 encePairwiseOnDemand]: 92/104 looper letters, 56 selfloop transitions, 39 changer transitions 4/226 dead transitions. [2021-11-20 05:33:36,335 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 226 transitions, 1814 flow [2021-11-20 05:33:36,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 05:33:36,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-11-20 05:33:36,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 936 transitions. [2021-11-20 05:33:36,338 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8181818181818182 [2021-11-20 05:33:36,338 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 936 transitions. [2021-11-20 05:33:36,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 936 transitions. [2021-11-20 05:33:36,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:33:36,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 936 transitions. [2021-11-20 05:33:36,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 85.0909090909091) internal successors, (936), 11 states have internal predecessors, (936), 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) [2021-11-20 05:33:36,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 104.0) internal successors, (1248), 12 states have internal predecessors, (1248), 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) [2021-11-20 05:33:36,345 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 104.0) internal successors, (1248), 12 states have internal predecessors, (1248), 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) [2021-11-20 05:33:36,345 INFO L186 Difference]: Start difference. First operand has 190 places, 185 transitions, 1405 flow. Second operand 11 states and 936 transitions. [2021-11-20 05:33:36,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 226 transitions, 1814 flow [2021-11-20 05:33:36,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 226 transitions, 1743 flow, removed 31 selfloop flow, removed 5 redundant places. [2021-11-20 05:33:36,546 INFO L242 Difference]: Finished difference. Result has 196 places, 198 transitions, 1562 flow [2021-11-20 05:33:36,547 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=1368, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1562, PETRI_PLACES=196, PETRI_TRANSITIONS=198} [2021-11-20 05:33:36,547 INFO L334 CegarLoopForPetriNet]: 92 programPoint places, 104 predicate places. [2021-11-20 05:33:36,547 INFO L470 AbstractCegarLoop]: Abstraction has has 196 places, 198 transitions, 1562 flow [2021-11-20 05:33:36,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 80.83333333333333) internal successors, (970), 12 states have internal predecessors, (970), 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) [2021-11-20 05:33:36,548 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:33:36,548 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:33:36,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-20 05:33:36,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:33:36,763 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 05:33:36,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:33:36,764 INFO L85 PathProgramCache]: Analyzing trace with hash 420708708, now seen corresponding path program 5 times [2021-11-20 05:33:36,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:33:36,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597657268] [2021-11-20 05:33:36,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:33:36,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:33:36,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:36,959 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 05:33:36,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:33:36,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597657268] [2021-11-20 05:33:36,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597657268] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:33:36,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016385454] [2021-11-20 05:33:36,960 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-20 05:33:36,960 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:33:36,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:33:36,961 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:33:36,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-20 05:33:37,051 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-11-20 05:33:37,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:33:37,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-20 05:33:37,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:33:37,406 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 05:33:37,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:33:37,767 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 05:33:37,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016385454] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:33:37,767 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 05:33:37,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2021-11-20 05:33:37,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494868352] [2021-11-20 05:33:37,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 05:33:37,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 05:33:37,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:33:37,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 05:33:37,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-20 05:33:37,771 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 104 [2021-11-20 05:33:37,772 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 198 transitions, 1562 flow. Second operand has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 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) [2021-11-20 05:33:37,772 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:33:37,772 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 104 [2021-11-20 05:33:37,773 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:33:39,666 INFO L129 PetriNetUnfolder]: 1194/8471 cut-off events. [2021-11-20 05:33:39,666 INFO L130 PetriNetUnfolder]: For 41986/43221 co-relation queries the response was YES. [2021-11-20 05:33:39,711 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30694 conditions, 8471 events. 1194/8471 cut-off events. For 41986/43221 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 109184 event pairs, 221 based on Foata normal form. 230/8534 useless extension candidates. Maximal degree in co-relation 30323. Up to 1769 conditions per place. [2021-11-20 05:33:39,741 INFO L132 encePairwiseOnDemand]: 92/104 looper letters, 78 selfloop transitions, 29 changer transitions 4/238 dead transitions. [2021-11-20 05:33:39,741 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 238 transitions, 2027 flow [2021-11-20 05:33:39,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 05:33:39,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-11-20 05:33:39,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 844 transitions. [2021-11-20 05:33:39,744 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8115384615384615 [2021-11-20 05:33:39,744 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 844 transitions. [2021-11-20 05:33:39,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 844 transitions. [2021-11-20 05:33:39,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:33:39,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 844 transitions. [2021-11-20 05:33:39,747 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 84.4) internal successors, (844), 10 states have internal predecessors, (844), 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) [2021-11-20 05:33:39,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 104.0) internal successors, (1144), 11 states have internal predecessors, (1144), 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) [2021-11-20 05:33:39,749 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 104.0) internal successors, (1144), 11 states have internal predecessors, (1144), 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) [2021-11-20 05:33:39,750 INFO L186 Difference]: Start difference. First operand has 196 places, 198 transitions, 1562 flow. Second operand 10 states and 844 transitions. [2021-11-20 05:33:39,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 238 transitions, 2027 flow [2021-11-20 05:33:39,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 238 transitions, 1956 flow, removed 23 selfloop flow, removed 6 redundant places. [2021-11-20 05:33:39,944 INFO L242 Difference]: Finished difference. Result has 202 places, 218 transitions, 1799 flow [2021-11-20 05:33:39,945 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=1511, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1799, PETRI_PLACES=202, PETRI_TRANSITIONS=218} [2021-11-20 05:33:39,945 INFO L334 CegarLoopForPetriNet]: 92 programPoint places, 110 predicate places. [2021-11-20 05:33:39,945 INFO L470 AbstractCegarLoop]: Abstraction has has 202 places, 218 transitions, 1799 flow [2021-11-20 05:33:39,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 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) [2021-11-20 05:33:39,946 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:33:39,946 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:33:39,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-20 05:33:40,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-20 05:33:40,159 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 05:33:40,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:33:40,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1359929488, now seen corresponding path program 6 times [2021-11-20 05:33:40,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:33:40,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340928496] [2021-11-20 05:33:40,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:33:40,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:33:40,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:40,356 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 05:33:40,356 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:33:40,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340928496] [2021-11-20 05:33:40,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340928496] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:33:40,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433222768] [2021-11-20 05:33:40,357 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-20 05:33:40,357 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:33:40,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:33:40,358 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:33:40,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-20 05:33:40,623 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-11-20 05:33:40,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:33:40,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-20 05:33:40,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:33:40,949 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 05:33:40,949 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:33:41,197 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 05:33:41,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [433222768] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:33:41,198 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 05:33:41,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2021-11-20 05:33:41,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475871610] [2021-11-20 05:33:41,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 05:33:41,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 05:33:41,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:33:41,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 05:33:41,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-11-20 05:33:41,201 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 104 [2021-11-20 05:33:41,202 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 218 transitions, 1799 flow. Second operand has 12 states, 12 states have (on average 80.83333333333333) internal successors, (970), 12 states have internal predecessors, (970), 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) [2021-11-20 05:33:41,203 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:33:41,203 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 104 [2021-11-20 05:33:41,203 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:33:43,485 INFO L129 PetriNetUnfolder]: 1423/10240 cut-off events. [2021-11-20 05:33:43,485 INFO L130 PetriNetUnfolder]: For 52370/53822 co-relation queries the response was YES. [2021-11-20 05:33:43,679 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37168 conditions, 10240 events. 1423/10240 cut-off events. For 52370/53822 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 136601 event pairs, 199 based on Foata normal form. 391/10444 useless extension candidates. Maximal degree in co-relation 36704. Up to 1346 conditions per place. [2021-11-20 05:33:43,705 INFO L132 encePairwiseOnDemand]: 92/104 looper letters, 63 selfloop transitions, 70 changer transitions 4/264 dead transitions. [2021-11-20 05:33:43,705 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 264 transitions, 2375 flow [2021-11-20 05:33:43,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 05:33:43,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-11-20 05:33:43,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 934 transitions. [2021-11-20 05:33:43,707 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8164335664335665 [2021-11-20 05:33:43,707 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 934 transitions. [2021-11-20 05:33:43,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 934 transitions. [2021-11-20 05:33:43,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:33:43,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 934 transitions. [2021-11-20 05:33:43,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 84.9090909090909) internal successors, (934), 11 states have internal predecessors, (934), 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) [2021-11-20 05:33:43,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 104.0) internal successors, (1248), 12 states have internal predecessors, (1248), 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) [2021-11-20 05:33:43,713 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 104.0) internal successors, (1248), 12 states have internal predecessors, (1248), 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) [2021-11-20 05:33:43,713 INFO L186 Difference]: Start difference. First operand has 202 places, 218 transitions, 1799 flow. Second operand 11 states and 934 transitions. [2021-11-20 05:33:43,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 264 transitions, 2375 flow [2021-11-20 05:33:43,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 264 transitions, 2334 flow, removed 16 selfloop flow, removed 5 redundant places. [2021-11-20 05:33:43,903 INFO L242 Difference]: Finished difference. Result has 210 places, 237 transitions, 2213 flow [2021-11-20 05:33:43,903 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=1772, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2213, PETRI_PLACES=210, PETRI_TRANSITIONS=237} [2021-11-20 05:33:43,904 INFO L334 CegarLoopForPetriNet]: 92 programPoint places, 118 predicate places. [2021-11-20 05:33:43,904 INFO L470 AbstractCegarLoop]: Abstraction has has 210 places, 237 transitions, 2213 flow [2021-11-20 05:33:43,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 80.83333333333333) internal successors, (970), 12 states have internal predecessors, (970), 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) [2021-11-20 05:33:43,905 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:33:43,905 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:33:43,909 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-11-20 05:33:44,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-20 05:33:44,109 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 05:33:44,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:33:44,109 INFO L85 PathProgramCache]: Analyzing trace with hash 365230234, now seen corresponding path program 7 times [2021-11-20 05:33:44,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:33:44,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601921824] [2021-11-20 05:33:44,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:33:44,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:33:44,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:44,274 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 05:33:44,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:33:44,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601921824] [2021-11-20 05:33:44,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601921824] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:33:44,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588546554] [2021-11-20 05:33:44,275 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-20 05:33:44,275 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:33:44,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:33:44,276 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:33:44,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-20 05:33:44,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:44,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-20 05:33:44,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:33:44,659 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 05:33:44,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:33:44,898 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 05:33:44,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588546554] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:33:44,899 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 05:33:44,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2021-11-20 05:33:44,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743181973] [2021-11-20 05:33:44,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 05:33:44,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 05:33:44,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:33:44,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 05:33:44,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-20 05:33:44,902 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 104 [2021-11-20 05:33:44,904 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 237 transitions, 2213 flow. Second operand has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 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) [2021-11-20 05:33:44,904 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:33:44,904 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 104 [2021-11-20 05:33:44,904 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:33:47,204 INFO L129 PetriNetUnfolder]: 1498/10805 cut-off events. [2021-11-20 05:33:47,205 INFO L130 PetriNetUnfolder]: For 61002/62379 co-relation queries the response was YES. [2021-11-20 05:33:47,281 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41022 conditions, 10805 events. 1498/10805 cut-off events. For 61002/62379 co-relation queries the response was YES. Maximal size of possible extension queue 610. Compared 146152 event pairs, 291 based on Foata normal form. 277/10883 useless extension candidates. Maximal degree in co-relation 40534. Up to 2271 conditions per place. [2021-11-20 05:33:47,311 INFO L132 encePairwiseOnDemand]: 92/104 looper letters, 110 selfloop transitions, 24 changer transitions 4/265 dead transitions. [2021-11-20 05:33:47,311 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 265 transitions, 2678 flow [2021-11-20 05:33:47,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 05:33:47,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-11-20 05:33:47,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 843 transitions. [2021-11-20 05:33:47,313 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8105769230769231 [2021-11-20 05:33:47,314 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 843 transitions. [2021-11-20 05:33:47,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 843 transitions. [2021-11-20 05:33:47,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:33:47,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 843 transitions. [2021-11-20 05:33:47,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 84.3) internal successors, (843), 10 states have internal predecessors, (843), 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) [2021-11-20 05:33:47,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 104.0) internal successors, (1144), 11 states have internal predecessors, (1144), 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) [2021-11-20 05:33:47,319 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 104.0) internal successors, (1144), 11 states have internal predecessors, (1144), 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) [2021-11-20 05:33:47,320 INFO L186 Difference]: Start difference. First operand has 210 places, 237 transitions, 2213 flow. Second operand 10 states and 843 transitions. [2021-11-20 05:33:47,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 265 transitions, 2678 flow [2021-11-20 05:33:47,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 265 transitions, 2597 flow, removed 36 selfloop flow, removed 5 redundant places. [2021-11-20 05:33:47,529 INFO L242 Difference]: Finished difference. Result has 216 places, 245 transitions, 2324 flow [2021-11-20 05:33:47,530 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=2160, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2324, PETRI_PLACES=216, PETRI_TRANSITIONS=245} [2021-11-20 05:33:47,530 INFO L334 CegarLoopForPetriNet]: 92 programPoint places, 124 predicate places. [2021-11-20 05:33:47,530 INFO L470 AbstractCegarLoop]: Abstraction has has 216 places, 245 transitions, 2324 flow [2021-11-20 05:33:47,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 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) [2021-11-20 05:33:47,531 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:33:47,531 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:33:47,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-20 05:33:47,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-20 05:33:47,733 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 05:33:47,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:33:47,733 INFO L85 PathProgramCache]: Analyzing trace with hash -944834968, now seen corresponding path program 8 times [2021-11-20 05:33:47,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:33:47,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086530662] [2021-11-20 05:33:47,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:33:47,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:33:47,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:47,904 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 05:33:47,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:33:47,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086530662] [2021-11-20 05:33:47,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086530662] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:33:47,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876560864] [2021-11-20 05:33:47,905 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 05:33:47,905 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:33:47,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:33:47,906 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:33:47,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-20 05:33:47,982 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 05:33:47,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:33:47,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-20 05:33:47,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:33:48,318 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 05:33:48,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:33:48,572 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 05:33:48,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876560864] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:33:48,572 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 05:33:48,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2021-11-20 05:33:48,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410226642] [2021-11-20 05:33:48,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 05:33:48,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 05:33:48,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:33:48,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 05:33:48,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-11-20 05:33:48,576 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 104 [2021-11-20 05:33:48,577 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 245 transitions, 2324 flow. Second operand has 12 states, 12 states have (on average 80.83333333333333) internal successors, (970), 12 states have internal predecessors, (970), 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) [2021-11-20 05:33:48,578 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:33:48,578 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 104 [2021-11-20 05:33:48,578 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:33:51,634 INFO L129 PetriNetUnfolder]: 2013/14317 cut-off events. [2021-11-20 05:33:51,634 INFO L130 PetriNetUnfolder]: For 81843/84160 co-relation queries the response was YES. [2021-11-20 05:33:51,738 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53445 conditions, 14317 events. 2013/14317 cut-off events. For 81843/84160 co-relation queries the response was YES. Maximal size of possible extension queue 758. Compared 202688 event pairs, 297 based on Foata normal form. 471/14523 useless extension candidates. Maximal degree in co-relation 52744. Up to 2212 conditions per place. [2021-11-20 05:33:51,771 INFO L132 encePairwiseOnDemand]: 92/104 looper letters, 118 selfloop transitions, 48 changer transitions 4/297 dead transitions. [2021-11-20 05:33:51,771 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 297 transitions, 3032 flow [2021-11-20 05:33:51,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 05:33:51,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-11-20 05:33:51,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 936 transitions. [2021-11-20 05:33:51,773 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8181818181818182 [2021-11-20 05:33:51,773 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 936 transitions. [2021-11-20 05:33:51,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 936 transitions. [2021-11-20 05:33:51,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:33:51,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 936 transitions. [2021-11-20 05:33:51,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 85.0909090909091) internal successors, (936), 11 states have internal predecessors, (936), 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) [2021-11-20 05:33:51,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 104.0) internal successors, (1248), 12 states have internal predecessors, (1248), 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) [2021-11-20 05:33:51,777 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 104.0) internal successors, (1248), 12 states have internal predecessors, (1248), 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) [2021-11-20 05:33:51,777 INFO L186 Difference]: Start difference. First operand has 216 places, 245 transitions, 2324 flow. Second operand 11 states and 936 transitions. [2021-11-20 05:33:51,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 297 transitions, 3032 flow [2021-11-20 05:33:52,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 297 transitions, 2971 flow, removed 26 selfloop flow, removed 5 redundant places. [2021-11-20 05:33:52,109 INFO L242 Difference]: Finished difference. Result has 224 places, 269 transitions, 2714 flow [2021-11-20 05:33:52,110 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=2277, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2714, PETRI_PLACES=224, PETRI_TRANSITIONS=269} [2021-11-20 05:33:52,110 INFO L334 CegarLoopForPetriNet]: 92 programPoint places, 132 predicate places. [2021-11-20 05:33:52,111 INFO L470 AbstractCegarLoop]: Abstraction has has 224 places, 269 transitions, 2714 flow [2021-11-20 05:33:52,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 80.83333333333333) internal successors, (970), 12 states have internal predecessors, (970), 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) [2021-11-20 05:33:52,111 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:33:52,112 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:33:52,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-20 05:33:52,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-20 05:33:52,319 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 05:33:52,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:33:52,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1698190916, now seen corresponding path program 1 times [2021-11-20 05:33:52,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:33:52,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253844947] [2021-11-20 05:33:52,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:33:52,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:33:52,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:52,386 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 05:33:52,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:33:52,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253844947] [2021-11-20 05:33:52,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253844947] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:33:52,387 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:33:52,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 05:33:52,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874577651] [2021-11-20 05:33:52,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:33:52,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:33:52,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:33:52,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:33:52,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:33:52,390 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 104 [2021-11-20 05:33:52,390 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 269 transitions, 2714 flow. Second operand has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 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) [2021-11-20 05:33:52,390 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:33:52,390 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 104 [2021-11-20 05:33:52,391 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:33:54,013 INFO L129 PetriNetUnfolder]: 654/6663 cut-off events. [2021-11-20 05:33:54,014 INFO L130 PetriNetUnfolder]: For 36549/37284 co-relation queries the response was YES. [2021-11-20 05:33:54,075 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25510 conditions, 6663 events. 654/6663 cut-off events. For 36549/37284 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 84577 event pairs, 61 based on Foata normal form. 213/6840 useless extension candidates. Maximal degree in co-relation 25205. Up to 900 conditions per place. [2021-11-20 05:33:54,089 INFO L132 encePairwiseOnDemand]: 99/104 looper letters, 64 selfloop transitions, 7 changer transitions 0/249 dead transitions. [2021-11-20 05:33:54,089 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 249 transitions, 2564 flow [2021-11-20 05:33:54,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:33:54,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-11-20 05:33:54,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 371 transitions. [2021-11-20 05:33:54,090 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8918269230769231 [2021-11-20 05:33:54,090 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 371 transitions. [2021-11-20 05:33:54,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 371 transitions. [2021-11-20 05:33:54,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:33:54,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 371 transitions. [2021-11-20 05:33:54,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 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) [2021-11-20 05:33:54,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 104.0) internal successors, (520), 5 states have internal predecessors, (520), 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) [2021-11-20 05:33:54,093 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 104.0) internal successors, (520), 5 states have internal predecessors, (520), 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) [2021-11-20 05:33:54,093 INFO L186 Difference]: Start difference. First operand has 224 places, 269 transitions, 2714 flow. Second operand 4 states and 371 transitions. [2021-11-20 05:33:54,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 249 transitions, 2564 flow [2021-11-20 05:33:54,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 249 transitions, 2491 flow, removed 23 selfloop flow, removed 7 redundant places. [2021-11-20 05:33:54,252 INFO L242 Difference]: Finished difference. Result has 220 places, 245 transitions, 2367 flow [2021-11-20 05:33:54,252 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=2327, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2367, PETRI_PLACES=220, PETRI_TRANSITIONS=245} [2021-11-20 05:33:54,253 INFO L334 CegarLoopForPetriNet]: 92 programPoint places, 128 predicate places. [2021-11-20 05:33:54,253 INFO L470 AbstractCegarLoop]: Abstraction has has 220 places, 245 transitions, 2367 flow [2021-11-20 05:33:54,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 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) [2021-11-20 05:33:54,254 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:33:54,254 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:33:54,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-20 05:33:54,254 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 05:33:54,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:33:54,255 INFO L85 PathProgramCache]: Analyzing trace with hash -964319813, now seen corresponding path program 9 times [2021-11-20 05:33:54,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:33:54,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115227995] [2021-11-20 05:33:54,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:33:54,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:33:54,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:54,676 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:33:54,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:33:54,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115227995] [2021-11-20 05:33:54,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115227995] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:33:54,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866391726] [2021-11-20 05:33:54,677 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 05:33:54,677 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:33:54,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:33:54,684 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:33:54,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-20 05:33:54,991 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-20 05:33:54,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:33:54,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-20 05:33:54,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:33:58,466 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:33:58,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:34:10,268 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:34:10,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866391726] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:34:10,269 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 05:34:10,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 39 [2021-11-20 05:34:10,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216323684] [2021-11-20 05:34:10,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 05:34:10,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-11-20 05:34:10,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:34:10,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-11-20 05:34:10,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=1277, Unknown=1, NotChecked=0, Total=1482 [2021-11-20 05:34:10,274 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 104 [2021-11-20 05:34:10,277 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 245 transitions, 2367 flow. Second operand has 39 states, 39 states have (on average 69.56410256410257) internal successors, (2713), 39 states have internal predecessors, (2713), 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) [2021-11-20 05:34:10,277 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:34:10,277 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 104 [2021-11-20 05:34:10,278 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:34:17,400 WARN L227 SmtUtils]: Spent 5.63s on a formula simplification. DAG size of input: 53 DAG size of output: 49 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 05:34:50,633 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 05:34:50,970 INFO L129 PetriNetUnfolder]: 6363/20866 cut-off events. [2021-11-20 05:34:50,970 INFO L130 PetriNetUnfolder]: For 136867/137007 co-relation queries the response was YES. [2021-11-20 05:34:51,352 INFO L84 FinitePrefix]: Finished finitePrefix Result has 93358 conditions, 20866 events. 6363/20866 cut-off events. For 136867/137007 co-relation queries the response was YES. Maximal size of possible extension queue 1024. Compared 260985 event pairs, 460 based on Foata normal form. 503/21247 useless extension candidates. Maximal degree in co-relation 80149. Up to 3442 conditions per place. [2021-11-20 05:34:51,418 INFO L132 encePairwiseOnDemand]: 88/104 looper letters, 562 selfloop transitions, 100 changer transitions 0/776 dead transitions. [2021-11-20 05:34:51,418 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 776 transitions, 9080 flow [2021-11-20 05:34:51,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-20 05:34:51,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2021-11-20 05:34:51,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 3328 transitions. [2021-11-20 05:34:51,425 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6956521739130435 [2021-11-20 05:34:51,425 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 3328 transitions. [2021-11-20 05:34:51,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 3328 transitions. [2021-11-20 05:34:51,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:34:51,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 3328 transitions. [2021-11-20 05:34:51,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 72.34782608695652) internal successors, (3328), 46 states have internal predecessors, (3328), 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) [2021-11-20 05:34:51,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 104.0) internal successors, (4888), 47 states have internal predecessors, (4888), 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) [2021-11-20 05:34:51,442 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 104.0) internal successors, (4888), 47 states have internal predecessors, (4888), 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) [2021-11-20 05:34:51,442 INFO L186 Difference]: Start difference. First operand has 220 places, 245 transitions, 2367 flow. Second operand 46 states and 3328 transitions. [2021-11-20 05:34:51,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 776 transitions, 9080 flow [2021-11-20 05:34:52,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 776 transitions, 9044 flow, removed 15 selfloop flow, removed 1 redundant places. [2021-11-20 05:34:52,011 INFO L242 Difference]: Finished difference. Result has 282 places, 314 transitions, 3451 flow [2021-11-20 05:34:52,012 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=2355, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=3451, PETRI_PLACES=282, PETRI_TRANSITIONS=314} [2021-11-20 05:34:52,012 INFO L334 CegarLoopForPetriNet]: 92 programPoint places, 190 predicate places. [2021-11-20 05:34:52,012 INFO L470 AbstractCegarLoop]: Abstraction has has 282 places, 314 transitions, 3451 flow [2021-11-20 05:34:52,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 69.56410256410257) internal successors, (2713), 39 states have internal predecessors, (2713), 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) [2021-11-20 05:34:52,013 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:34:52,013 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:34:52,031 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-11-20 05:34:52,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:34:52,218 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 05:34:52,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:34:52,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1650136519, now seen corresponding path program 10 times [2021-11-20 05:34:52,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:34:52,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879623821] [2021-11-20 05:34:52,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:34:52,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:34:52,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:52,691 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:34:52,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:34:52,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879623821] [2021-11-20 05:34:52,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879623821] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:34:52,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448739255] [2021-11-20 05:34:52,692 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-20 05:34:52,692 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:34:52,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:34:52,699 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:34:52,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-20 05:34:52,907 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-20 05:34:52,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:34:52,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-20 05:34:52,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:34:53,965 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 05:34:53,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:34:56,320 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 05:34:56,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448739255] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:34:56,320 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 05:34:56,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 12] total 35 [2021-11-20 05:34:56,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043240607] [2021-11-20 05:34:56,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 05:34:56,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-11-20 05:34:56,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:34:56,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-11-20 05:34:56,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1079, Unknown=0, NotChecked=0, Total=1190 [2021-11-20 05:34:56,325 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 104 [2021-11-20 05:34:56,327 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 314 transitions, 3451 flow. Second operand has 35 states, 35 states have (on average 69.94285714285714) internal successors, (2448), 35 states have internal predecessors, (2448), 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) [2021-11-20 05:34:56,327 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:34:56,327 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 104 [2021-11-20 05:34:56,327 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:36:40,329 WARN L227 SmtUtils]: Spent 6.47s on a formula simplification that was a NOOP. DAG size: 70 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 05:37:27,551 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 05:38:17,633 INFO L129 PetriNetUnfolder]: 17780/54874 cut-off events. [2021-11-20 05:38:17,634 INFO L130 PetriNetUnfolder]: For 609964/610482 co-relation queries the response was YES. [2021-11-20 05:38:18,564 INFO L84 FinitePrefix]: Finished finitePrefix Result has 305481 conditions, 54874 events. 17780/54874 cut-off events. For 609964/610482 co-relation queries the response was YES. Maximal size of possible extension queue 1741. Compared 724775 event pairs, 1185 based on Foata normal form. 1531/56100 useless extension candidates. Maximal degree in co-relation 276614. Up to 6755 conditions per place. [2021-11-20 05:38:18,789 INFO L132 encePairwiseOnDemand]: 85/104 looper letters, 1168 selfloop transitions, 504 changer transitions 0/1786 dead transitions. [2021-11-20 05:38:18,789 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 1786 transitions, 23901 flow [2021-11-20 05:38:18,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2021-11-20 05:38:18,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2021-11-20 05:38:18,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 10182 transitions. [2021-11-20 05:38:18,807 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6894637053087758 [2021-11-20 05:38:18,807 INFO L72 ComplementDD]: Start complementDD. Operand 142 states and 10182 transitions. [2021-11-20 05:38:18,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 142 states and 10182 transitions. [2021-11-20 05:38:18,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:38:18,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 142 states and 10182 transitions. [2021-11-20 05:38:18,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 143 states, 142 states have (on average 71.70422535211267) internal successors, (10182), 142 states have internal predecessors, (10182), 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) [2021-11-20 05:38:18,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 143 states, 143 states have (on average 104.0) internal successors, (14872), 143 states have internal predecessors, (14872), 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) [2021-11-20 05:38:18,858 INFO L81 ComplementDD]: Finished complementDD. Result has 143 states, 143 states have (on average 104.0) internal successors, (14872), 143 states have internal predecessors, (14872), 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) [2021-11-20 05:38:18,858 INFO L186 Difference]: Start difference. First operand has 282 places, 314 transitions, 3451 flow. Second operand 142 states and 10182 transitions. [2021-11-20 05:38:18,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 1786 transitions, 23901 flow [2021-11-20 05:38:28,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 1786 transitions, 22372 flow, removed 612 selfloop flow, removed 15 redundant places. [2021-11-20 05:38:28,480 INFO L242 Difference]: Finished difference. Result has 470 places, 800 transitions, 10432 flow [2021-11-20 05:38:28,481 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=3184, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=142, PETRI_FLOW=10432, PETRI_PLACES=470, PETRI_TRANSITIONS=800} [2021-11-20 05:38:28,481 INFO L334 CegarLoopForPetriNet]: 92 programPoint places, 378 predicate places. [2021-11-20 05:38:28,482 INFO L470 AbstractCegarLoop]: Abstraction has has 470 places, 800 transitions, 10432 flow [2021-11-20 05:38:28,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 69.94285714285714) internal successors, (2448), 35 states have internal predecessors, (2448), 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) [2021-11-20 05:38:28,482 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:38:28,483 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:38:28,500 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-11-20 05:38:28,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:38:28,687 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 05:38:28,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:38:28,687 INFO L85 PathProgramCache]: Analyzing trace with hash 813513856, now seen corresponding path program 11 times [2021-11-20 05:38:28,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:38:28,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012230331] [2021-11-20 05:38:28,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:38:28,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:38:28,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:38:29,050 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:38:29,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:38:29,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012230331] [2021-11-20 05:38:29,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012230331] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:38:29,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101814872] [2021-11-20 05:38:29,051 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-20 05:38:29,051 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:38:29,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:38:29,051 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:38:29,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5746d4b-0d9b-431f-b6d9-d6e06728c5f9/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-20 05:38:29,241 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-11-20 05:38:29,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:38:29,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-20 05:38:29,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:38:30,617 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:38:30,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:38:48,955 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:38:48,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101814872] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:38:48,955 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 05:38:48,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 37 [2021-11-20 05:38:48,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384167875] [2021-11-20 05:38:48,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 05:38:48,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-11-20 05:38:48,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:38:48,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-11-20 05:38:48,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1191, Unknown=2, NotChecked=0, Total=1332 [2021-11-20 05:38:48,959 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 104 [2021-11-20 05:38:48,960 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 800 transitions, 10432 flow. Second operand has 37 states, 37 states have (on average 69.48648648648648) internal successors, (2571), 37 states have internal predecessors, (2571), 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) [2021-11-20 05:38:48,961 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:38:48,961 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 104 [2021-11-20 05:38:48,961 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand