./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab07ee-51ef-493a-b629-7ab62c2ed7f4/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab07ee-51ef-493a-b629-7ab62c2ed7f4/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab07ee-51ef-493a-b629-7ab62c2ed7f4/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab07ee-51ef-493a-b629-7ab62c2ed7f4/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab07ee-51ef-493a-b629-7ab62c2ed7f4/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab07ee-51ef-493a-b629-7ab62c2ed7f4/bin/uautomizer-QkZJyEgLgS --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 57b20b3268fa30a07af1365aac59c96531ad2ebea6861c18a1d5dfea8339adbb --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 02:23:18,468 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 02:23:18,471 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 02:23:18,517 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 02:23:18,518 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 02:23:18,519 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 02:23:18,520 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 02:23:18,522 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 02:23:18,524 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 02:23:18,526 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 02:23:18,528 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 02:23:18,532 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 02:23:18,532 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 02:23:18,539 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 02:23:18,541 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 02:23:18,544 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 02:23:18,547 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 02:23:18,548 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 02:23:18,550 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 02:23:18,552 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 02:23:18,554 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 02:23:18,555 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 02:23:18,557 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 02:23:18,558 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 02:23:18,562 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 02:23:18,563 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 02:23:18,563 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 02:23:18,564 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 02:23:18,565 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 02:23:18,566 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 02:23:18,567 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 02:23:18,568 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 02:23:18,569 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 02:23:18,570 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 02:23:18,571 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 02:23:18,572 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 02:23:18,572 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 02:23:18,573 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 02:23:18,573 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 02:23:18,575 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 02:23:18,576 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 02:23:18,577 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab07ee-51ef-493a-b629-7ab62c2ed7f4/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-23 02:23:18,602 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 02:23:18,603 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 02:23:18,603 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 02:23:18,603 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 02:23:18,604 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 02:23:18,605 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 02:23:18,605 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 02:23:18,606 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 02:23:18,606 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 02:23:18,606 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 02:23:18,607 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 02:23:18,607 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 02:23:18,607 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 02:23:18,607 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 02:23:18,608 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 02:23:18,608 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 02:23:18,608 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 02:23:18,609 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 02:23:18,609 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 02:23:18,609 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 02:23:18,609 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 02:23:18,610 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 02:23:18,610 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 02:23:18,610 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 02:23:18,610 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:23:18,611 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 02:23:18,611 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 02:23:18,611 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 02:23:18,612 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 02:23:18,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 02:23:18,612 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 02:23:18,612 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 02:23:18,613 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 02:23:18,613 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 02:23:18,613 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_16ab07ee-51ef-493a-b629-7ab62c2ed7f4/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab07ee-51ef-493a-b629-7ab62c2ed7f4/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57b20b3268fa30a07af1365aac59c96531ad2ebea6861c18a1d5dfea8339adbb [2022-11-23 02:23:18,890 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 02:23:18,924 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 02:23:18,927 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 02:23:18,928 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 02:23:18,929 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 02:23:18,931 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab07ee-51ef-493a-b629-7ab62c2ed7f4/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c [2022-11-23 02:23:22,207 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 02:23:22,456 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 02:23:22,457 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab07ee-51ef-493a-b629-7ab62c2ed7f4/sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c [2022-11-23 02:23:22,466 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab07ee-51ef-493a-b629-7ab62c2ed7f4/bin/uautomizer-QkZJyEgLgS/data/f83505cbc/0729a74e3eca4275951718a3ad0f346c/FLAGd8329c4f4 [2022-11-23 02:23:22,483 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab07ee-51ef-493a-b629-7ab62c2ed7f4/bin/uautomizer-QkZJyEgLgS/data/f83505cbc/0729a74e3eca4275951718a3ad0f346c [2022-11-23 02:23:22,486 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 02:23:22,488 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 02:23:22,490 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 02:23:22,490 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 02:23:22,494 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 02:23:22,495 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:23:22" (1/1) ... [2022-11-23 02:23:22,497 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38361c2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:22, skipping insertion in model container [2022-11-23 02:23:22,497 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:23:22" (1/1) ... [2022-11-23 02:23:22,506 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 02:23:22,540 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 02:23:22,820 WARN L237 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_16ab07ee-51ef-493a-b629-7ab62c2ed7f4/sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c[6501,6514] [2022-11-23 02:23:22,833 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:23:22,848 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 02:23:22,895 WARN L237 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_16ab07ee-51ef-493a-b629-7ab62c2ed7f4/sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c[6501,6514] [2022-11-23 02:23:22,900 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:23:22,917 INFO L208 MainTranslator]: Completed translation [2022-11-23 02:23:22,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:22 WrapperNode [2022-11-23 02:23:22,917 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 02:23:22,919 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 02:23:22,919 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 02:23:22,919 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 02:23:22,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:22" (1/1) ... [2022-11-23 02:23:22,942 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:22" (1/1) ... [2022-11-23 02:23:22,995 INFO L138 Inliner]: procedures = 26, calls = 76, calls flagged for inlining = 28, calls inlined = 42, statements flattened = 574 [2022-11-23 02:23:22,996 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 02:23:22,996 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 02:23:22,997 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 02:23:22,997 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 02:23:23,008 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:22" (1/1) ... [2022-11-23 02:23:23,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:22" (1/1) ... [2022-11-23 02:23:23,015 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:22" (1/1) ... [2022-11-23 02:23:23,016 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:22" (1/1) ... [2022-11-23 02:23:23,055 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:22" (1/1) ... [2022-11-23 02:23:23,064 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:22" (1/1) ... [2022-11-23 02:23:23,067 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:22" (1/1) ... [2022-11-23 02:23:23,069 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:22" (1/1) ... [2022-11-23 02:23:23,083 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 02:23:23,087 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 02:23:23,088 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 02:23:23,088 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 02:23:23,089 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:22" (1/1) ... [2022-11-23 02:23:23,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:23:23,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab07ee-51ef-493a-b629-7ab62c2ed7f4/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:23:23,126 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab07ee-51ef-493a-b629-7ab62c2ed7f4/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 02:23:23,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab07ee-51ef-493a-b629-7ab62c2ed7f4/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 02:23:23,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 02:23:23,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 02:23:23,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 02:23:23,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 02:23:23,178 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-23 02:23:23,178 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-23 02:23:23,179 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-23 02:23:23,179 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-23 02:23:23,179 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-23 02:23:23,179 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-23 02:23:23,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 02:23:23,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 02:23:23,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 02:23:23,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 02:23:23,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 02:23:23,182 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-23 02:23:23,404 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 02:23:23,407 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 02:23:24,641 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 02:23:24,673 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 02:23:24,679 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-23 02:23:24,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:23:24 BoogieIcfgContainer [2022-11-23 02:23:24,684 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 02:23:24,689 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 02:23:24,689 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 02:23:24,693 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 02:23:24,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:23:22" (1/3) ... [2022-11-23 02:23:24,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27ab4d12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:23:24, skipping insertion in model container [2022-11-23 02:23:24,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:22" (2/3) ... [2022-11-23 02:23:24,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27ab4d12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:23:24, skipping insertion in model container [2022-11-23 02:23:24,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:23:24" (3/3) ... [2022-11-23 02:23:24,699 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-subst.wvr.c [2022-11-23 02:23:24,710 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-23 02:23:24,723 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 02:23:24,724 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 02:23:24,724 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 02:23:24,987 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-23 02:23:25,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 698 places, 761 transitions, 1546 flow [2022-11-23 02:23:25,502 INFO L130 PetriNetUnfolder]: 73/758 cut-off events. [2022-11-23 02:23:25,502 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-23 02:23:25,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 771 conditions, 758 events. 73/758 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2695 event pairs, 0 based on Foata normal form. 0/684 useless extension candidates. Maximal degree in co-relation 559. Up to 2 conditions per place. [2022-11-23 02:23:25,533 INFO L82 GeneralOperation]: Start removeDead. Operand has 698 places, 761 transitions, 1546 flow [2022-11-23 02:23:25,554 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 684 places, 747 transitions, 1512 flow [2022-11-23 02:23:25,559 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 02:23:25,595 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 684 places, 747 transitions, 1512 flow [2022-11-23 02:23:25,604 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 684 places, 747 transitions, 1512 flow [2022-11-23 02:23:25,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 684 places, 747 transitions, 1512 flow [2022-11-23 02:23:26,017 INFO L130 PetriNetUnfolder]: 73/747 cut-off events. [2022-11-23 02:23:26,017 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-23 02:23:26,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 760 conditions, 747 events. 73/747 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2688 event pairs, 0 based on Foata normal form. 0/674 useless extension candidates. Maximal degree in co-relation 559. Up to 2 conditions per place. [2022-11-23 02:23:26,111 INFO L119 LiptonReduction]: Number of co-enabled transitions 187758 [2022-11-23 02:24:08,441 INFO L134 LiptonReduction]: Checked pairs total: 175151 [2022-11-23 02:24:08,441 INFO L136 LiptonReduction]: Total number of compositions: 938 [2022-11-23 02:24:08,460 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 02:24:08,468 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@415d4257, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 02:24:08,468 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-23 02:24:08,482 INFO L130 PetriNetUnfolder]: 14/49 cut-off events. [2022-11-23 02:24:08,483 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-23 02:24:08,483 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:24:08,484 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:24:08,485 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 02:24:08,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:24:08,491 INFO L85 PathProgramCache]: Analyzing trace with hash 334132079, now seen corresponding path program 1 times [2022-11-23 02:24:08,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:24:08,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969082620] [2022-11-23 02:24:08,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:24:08,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:24:08,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:24:09,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:24:09,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:24:09,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969082620] [2022-11-23 02:24:09,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969082620] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:24:09,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:24:09,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 02:24:09,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929707449] [2022-11-23 02:24:09,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:24:09,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:24:09,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:24:09,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:24:09,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:24:09,357 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 705 out of 1699 [2022-11-23 02:24:09,367 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 50 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 711.3333333333334) internal successors, (2134), 3 states have internal predecessors, (2134), 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) [2022-11-23 02:24:09,367 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:24:09,367 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 705 of 1699 [2022-11-23 02:24:09,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:24:10,494 INFO L130 PetriNetUnfolder]: 2776/3671 cut-off events. [2022-11-23 02:24:10,495 INFO L131 PetriNetUnfolder]: For 175/175 co-relation queries the response was YES. [2022-11-23 02:24:10,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7603 conditions, 3671 events. 2776/3671 cut-off events. For 175/175 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 12610 event pairs, 1657 based on Foata normal form. 0/2552 useless extension candidates. Maximal degree in co-relation 7072. Up to 3669 conditions per place. [2022-11-23 02:24:10,519 INFO L137 encePairwiseOnDemand]: 1691/1699 looper letters, 46 selfloop transitions, 6 changer transitions 0/52 dead transitions. [2022-11-23 02:24:10,519 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 52 transitions, 226 flow [2022-11-23 02:24:10,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:24:10,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:24:10,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2171 transitions. [2022-11-23 02:24:10,545 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4259368255836767 [2022-11-23 02:24:10,546 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2171 transitions. [2022-11-23 02:24:10,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2171 transitions. [2022-11-23 02:24:10,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:24:10,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2171 transitions. [2022-11-23 02:24:10,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 723.6666666666666) internal successors, (2171), 3 states have internal predecessors, (2171), 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) [2022-11-23 02:24:10,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1699.0) internal successors, (6796), 4 states have internal predecessors, (6796), 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) [2022-11-23 02:24:10,600 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1699.0) internal successors, (6796), 4 states have internal predecessors, (6796), 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) [2022-11-23 02:24:10,602 INFO L175 Difference]: Start difference. First operand has 46 places, 50 transitions, 118 flow. Second operand 3 states and 2171 transitions. [2022-11-23 02:24:10,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 52 transitions, 226 flow [2022-11-23 02:24:10,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 52 transitions, 214 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-23 02:24:10,617 INFO L231 Difference]: Finished difference. Result has 43 places, 52 transitions, 136 flow [2022-11-23 02:24:10,619 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1699, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=43, PETRI_TRANSITIONS=52} [2022-11-23 02:24:10,624 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, -3 predicate places. [2022-11-23 02:24:10,624 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 52 transitions, 136 flow [2022-11-23 02:24:10,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 711.3333333333334) internal successors, (2134), 3 states have internal predecessors, (2134), 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) [2022-11-23 02:24:10,626 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:24:10,626 INFO L209 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] [2022-11-23 02:24:10,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 02:24:10,628 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 02:24:10,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:24:10,642 INFO L85 PathProgramCache]: Analyzing trace with hash 399710625, now seen corresponding path program 1 times [2022-11-23 02:24:10,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:24:10,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527890854] [2022-11-23 02:24:10,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:24:10,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:24:10,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:24:10,916 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 02:24:10,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:24:10,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527890854] [2022-11-23 02:24:10,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527890854] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:24:10,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850903930] [2022-11-23 02:24:10,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:24:10,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:24:10,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab07ee-51ef-493a-b629-7ab62c2ed7f4/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:24:10,922 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab07ee-51ef-493a-b629-7ab62c2ed7f4/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:24:10,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab07ee-51ef-493a-b629-7ab62c2ed7f4/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 02:24:11,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:24:11,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 02:24:11,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:24:11,211 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 02:24:11,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:24:11,242 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 02:24:11,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850903930] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:24:11,243 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:24:11,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2022-11-23 02:24:11,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623237496] [2022-11-23 02:24:11,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:24:11,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 02:24:11,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:24:11,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 02:24:11,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2022-11-23 02:24:11,449 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 699 out of 1699 [2022-11-23 02:24:11,458 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 52 transitions, 136 flow. Second operand has 8 states, 8 states have (on average 702.75) internal successors, (5622), 8 states have internal predecessors, (5622), 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) [2022-11-23 02:24:11,459 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:24:11,459 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 699 of 1699 [2022-11-23 02:24:11,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:24:12,611 INFO L130 PetriNetUnfolder]: 2776/3680 cut-off events. [2022-11-23 02:24:12,612 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-11-23 02:24:12,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7497 conditions, 3680 events. 2776/3680 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 12619 event pairs, 1657 based on Foata normal form. 6/2569 useless extension candidates. Maximal degree in co-relation 7448. Up to 3669 conditions per place. [2022-11-23 02:24:12,642 INFO L137 encePairwiseOnDemand]: 1692/1699 looper letters, 46 selfloop transitions, 15 changer transitions 0/61 dead transitions. [2022-11-23 02:24:12,642 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 61 transitions, 294 flow [2022-11-23 02:24:12,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 02:24:12,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-23 02:24:12,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 4264 transitions. [2022-11-23 02:24:12,660 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4182852658426525 [2022-11-23 02:24:12,660 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 4264 transitions. [2022-11-23 02:24:12,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 4264 transitions. [2022-11-23 02:24:12,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:24:12,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 4264 transitions. [2022-11-23 02:24:12,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 710.6666666666666) internal successors, (4264), 6 states have internal predecessors, (4264), 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) [2022-11-23 02:24:12,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1699.0) internal successors, (11893), 7 states have internal predecessors, (11893), 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) [2022-11-23 02:24:12,716 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1699.0) internal successors, (11893), 7 states have internal predecessors, (11893), 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) [2022-11-23 02:24:12,716 INFO L175 Difference]: Start difference. First operand has 43 places, 52 transitions, 136 flow. Second operand 6 states and 4264 transitions. [2022-11-23 02:24:12,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 61 transitions, 294 flow [2022-11-23 02:24:12,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 61 transitions, 288 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 02:24:12,721 INFO L231 Difference]: Finished difference. Result has 50 places, 61 transitions, 226 flow [2022-11-23 02:24:12,722 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1699, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=226, PETRI_PLACES=50, PETRI_TRANSITIONS=61} [2022-11-23 02:24:12,723 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, 4 predicate places. [2022-11-23 02:24:12,723 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 61 transitions, 226 flow [2022-11-23 02:24:12,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 702.75) internal successors, (5622), 8 states have internal predecessors, (5622), 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) [2022-11-23 02:24:12,728 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:24:12,728 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:24:12,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab07ee-51ef-493a-b629-7ab62c2ed7f4/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 02:24:12,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab07ee-51ef-493a-b629-7ab62c2ed7f4/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:24:12,944 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 02:24:12,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:24:12,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1943664715, now seen corresponding path program 2 times [2022-11-23 02:24:12,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:24:12,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553028697] [2022-11-23 02:24:12,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:24:12,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:24:13,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:24:13,407 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 02:24:13,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:24:13,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553028697] [2022-11-23 02:24:13,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553028697] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:24:13,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345802729] [2022-11-23 02:24:13,413 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 02:24:13,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:24:13,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab07ee-51ef-493a-b629-7ab62c2ed7f4/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:24:13,415 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab07ee-51ef-493a-b629-7ab62c2ed7f4/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:24:13,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab07ee-51ef-493a-b629-7ab62c2ed7f4/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 02:24:13,627 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-23 02:24:13,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:24:13,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-23 02:24:13,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:24:15,462 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-23 02:24:15,462 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:24:15,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345802729] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:24:15,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:24:15,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2022-11-23 02:24:15,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454644667] [2022-11-23 02:24:15,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:24:15,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 02:24:15,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:24:15,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 02:24:15,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-23 02:24:16,154 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 683 out of 1699 [2022-11-23 02:24:16,159 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 61 transitions, 226 flow. Second operand has 5 states, 5 states have (on average 687.4) internal successors, (3437), 5 states have internal predecessors, (3437), 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) [2022-11-23 02:24:16,160 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:24:16,160 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 683 of 1699 [2022-11-23 02:24:16,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:24:18,580 INFO L130 PetriNetUnfolder]: 3116/4199 cut-off events. [2022-11-23 02:24:18,581 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2022-11-23 02:24:18,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8577 conditions, 4199 events. 3116/4199 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 16024 event pairs, 1657 based on Foata normal form. 1/2930 useless extension candidates. Maximal degree in co-relation 8489. Up to 3599 conditions per place. [2022-11-23 02:24:18,612 INFO L137 encePairwiseOnDemand]: 1695/1699 looper letters, 99 selfloop transitions, 2 changer transitions 7/108 dead transitions. [2022-11-23 02:24:18,613 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 108 transitions, 548 flow [2022-11-23 02:24:18,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 02:24:18,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-23 02:24:18,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3512 transitions. [2022-11-23 02:24:18,624 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41341965862271923 [2022-11-23 02:24:18,624 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3512 transitions. [2022-11-23 02:24:18,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3512 transitions. [2022-11-23 02:24:18,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:24:18,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3512 transitions. [2022-11-23 02:24:18,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 702.4) internal successors, (3512), 5 states have internal predecessors, (3512), 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) [2022-11-23 02:24:18,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1699.0) internal successors, (10194), 6 states have internal predecessors, (10194), 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) [2022-11-23 02:24:18,657 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1699.0) internal successors, (10194), 6 states have internal predecessors, (10194), 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) [2022-11-23 02:24:18,658 INFO L175 Difference]: Start difference. First operand has 50 places, 61 transitions, 226 flow. Second operand 5 states and 3512 transitions. [2022-11-23 02:24:18,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 108 transitions, 548 flow [2022-11-23 02:24:18,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 108 transitions, 524 flow, removed 9 selfloop flow, removed 1 redundant places. [2022-11-23 02:24:18,663 INFO L231 Difference]: Finished difference. Result has 56 places, 62 transitions, 217 flow [2022-11-23 02:24:18,664 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1699, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=217, PETRI_PLACES=56, PETRI_TRANSITIONS=62} [2022-11-23 02:24:18,665 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, 10 predicate places. [2022-11-23 02:24:18,665 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 62 transitions, 217 flow [2022-11-23 02:24:18,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 687.4) internal successors, (3437), 5 states have internal predecessors, (3437), 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) [2022-11-23 02:24:18,667 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:24:18,667 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:24:18,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab07ee-51ef-493a-b629-7ab62c2ed7f4/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 02:24:18,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab07ee-51ef-493a-b629-7ab62c2ed7f4/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:24:18,875 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 02:24:18,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:24:18,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1212285125, now seen corresponding path program 3 times [2022-11-23 02:24:18,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:24:18,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70160491] [2022-11-23 02:24:18,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:24:18,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:24:18,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:24:19,221 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 02:24:19,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:24:19,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70160491] [2022-11-23 02:24:19,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70160491] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:24:19,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524721176] [2022-11-23 02:24:19,223 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 02:24:19,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:24:19,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab07ee-51ef-493a-b629-7ab62c2ed7f4/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:24:19,225 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab07ee-51ef-493a-b629-7ab62c2ed7f4/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:24:19,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab07ee-51ef-493a-b629-7ab62c2ed7f4/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 02:24:19,435 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-23 02:24:19,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:24:19,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-23 02:24:19,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:24:20,831 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-23 02:24:20,832 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:24:20,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524721176] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:24:20,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:24:20,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2022-11-23 02:24:20,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140895338] [2022-11-23 02:24:20,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:24:20,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 02:24:20,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:24:20,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 02:24:20,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-23 02:24:21,328 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 683 out of 1699 [2022-11-23 02:24:21,332 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 62 transitions, 217 flow. Second operand has 5 states, 5 states have (on average 687.4) internal successors, (3437), 5 states have internal predecessors, (3437), 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) [2022-11-23 02:24:21,332 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:24:21,332 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 683 of 1699 [2022-11-23 02:24:21,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:24:23,494 INFO L130 PetriNetUnfolder]: 3316/4549 cut-off events. [2022-11-23 02:24:23,494 INFO L131 PetriNetUnfolder]: For 711/711 co-relation queries the response was YES. [2022-11-23 02:24:23,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9787 conditions, 4549 events. 3316/4549 cut-off events. For 711/711 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 18284 event pairs, 1919 based on Foata normal form. 1/3672 useless extension candidates. Maximal degree in co-relation 9755. Up to 4051 conditions per place. [2022-11-23 02:24:23,530 INFO L137 encePairwiseOnDemand]: 1695/1699 looper letters, 104 selfloop transitions, 3 changer transitions 7/114 dead transitions. [2022-11-23 02:24:23,530 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 114 transitions, 571 flow [2022-11-23 02:24:23,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 02:24:23,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-23 02:24:23,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3517 transitions. [2022-11-23 02:24:23,542 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4140082401412596 [2022-11-23 02:24:23,542 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3517 transitions. [2022-11-23 02:24:23,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3517 transitions. [2022-11-23 02:24:23,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:24:23,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3517 transitions. [2022-11-23 02:24:23,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 703.4) internal successors, (3517), 5 states have internal predecessors, (3517), 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) [2022-11-23 02:24:23,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1699.0) internal successors, (10194), 6 states have internal predecessors, (10194), 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) [2022-11-23 02:24:23,574 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1699.0) internal successors, (10194), 6 states have internal predecessors, (10194), 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) [2022-11-23 02:24:23,575 INFO L175 Difference]: Start difference. First operand has 56 places, 62 transitions, 217 flow. Second operand 5 states and 3517 transitions. [2022-11-23 02:24:23,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 114 transitions, 571 flow [2022-11-23 02:24:23,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 114 transitions, 562 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-11-23 02:24:23,582 INFO L231 Difference]: Finished difference. Result has 60 places, 63 transitions, 234 flow [2022-11-23 02:24:23,582 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1699, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=234, PETRI_PLACES=60, PETRI_TRANSITIONS=63} [2022-11-23 02:24:23,585 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, 14 predicate places. [2022-11-23 02:24:23,586 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 63 transitions, 234 flow [2022-11-23 02:24:23,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 687.4) internal successors, (3437), 5 states have internal predecessors, (3437), 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) [2022-11-23 02:24:23,587 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:24:23,588 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:24:23,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab07ee-51ef-493a-b629-7ab62c2ed7f4/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 02:24:23,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab07ee-51ef-493a-b629-7ab62c2ed7f4/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:24:23,795 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 02:24:23,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:24:23,795 INFO L85 PathProgramCache]: Analyzing trace with hash 790056833, now seen corresponding path program 4 times [2022-11-23 02:24:23,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:24:23,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143741832] [2022-11-23 02:24:23,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:24:23,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:24:23,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:24:24,187 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 02:24:24,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:24:24,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143741832] [2022-11-23 02:24:24,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143741832] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:24:24,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568615441] [2022-11-23 02:24:24,188 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 02:24:24,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:24:24,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab07ee-51ef-493a-b629-7ab62c2ed7f4/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:24:24,190 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab07ee-51ef-493a-b629-7ab62c2ed7f4/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:24:24,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab07ee-51ef-493a-b629-7ab62c2ed7f4/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 02:24:24,693 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 02:24:24,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:24:24,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-23 02:24:24,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:24:24,805 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 02:24:24,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:24:24,911 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 02:24:24,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568615441] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:24:24,911 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:24:24,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 17 [2022-11-23 02:24:24,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211631542] [2022-11-23 02:24:24,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:24:24,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-23 02:24:24,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:24:24,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-23 02:24:24,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2022-11-23 02:24:25,406 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 699 out of 1699 [2022-11-23 02:24:25,422 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 63 transitions, 234 flow. Second operand has 17 states, 17 states have (on average 701.2941176470588) internal successors, (11922), 17 states have internal predecessors, (11922), 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) [2022-11-23 02:24:25,422 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:24:25,422 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 699 of 1699 [2022-11-23 02:24:25,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:24:26,912 INFO L130 PetriNetUnfolder]: 3315/4544 cut-off events. [2022-11-23 02:24:26,912 INFO L131 PetriNetUnfolder]: For 1854/1854 co-relation queries the response was YES. [2022-11-23 02:24:26,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10297 conditions, 4544 events. 3315/4544 cut-off events. For 1854/1854 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 17982 event pairs, 2136 based on Foata normal form. 1/3667 useless extension candidates. Maximal degree in co-relation 10263. Up to 4530 conditions per place. [2022-11-23 02:24:26,957 INFO L137 encePairwiseOnDemand]: 1692/1699 looper letters, 48 selfloop transitions, 18 changer transitions 0/66 dead transitions. [2022-11-23 02:24:26,958 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 66 transitions, 384 flow [2022-11-23 02:24:26,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 02:24:26,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-23 02:24:26,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4960 transitions. [2022-11-23 02:24:26,971 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4170520474228538 [2022-11-23 02:24:26,972 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4960 transitions. [2022-11-23 02:24:26,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4960 transitions. [2022-11-23 02:24:26,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:24:26,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4960 transitions. [2022-11-23 02:24:26,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 708.5714285714286) internal successors, (4960), 7 states have internal predecessors, (4960), 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) [2022-11-23 02:24:27,007 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1699.0) internal successors, (13592), 8 states have internal predecessors, (13592), 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) [2022-11-23 02:24:27,012 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1699.0) internal successors, (13592), 8 states have internal predecessors, (13592), 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) [2022-11-23 02:24:27,013 INFO L175 Difference]: Start difference. First operand has 60 places, 63 transitions, 234 flow. Second operand 7 states and 4960 transitions. [2022-11-23 02:24:27,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 66 transitions, 384 flow [2022-11-23 02:24:27,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 66 transitions, 378 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-23 02:24:27,019 INFO L231 Difference]: Finished difference. Result has 64 places, 66 transitions, 296 flow [2022-11-23 02:24:27,020 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1699, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=296, PETRI_PLACES=64, PETRI_TRANSITIONS=66} [2022-11-23 02:24:27,022 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, 18 predicate places. [2022-11-23 02:24:27,024 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 66 transitions, 296 flow [2022-11-23 02:24:27,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 701.2941176470588) internal successors, (11922), 17 states have internal predecessors, (11922), 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) [2022-11-23 02:24:27,029 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:24:27,029 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:24:27,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab07ee-51ef-493a-b629-7ab62c2ed7f4/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 02:24:27,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ab07ee-51ef-493a-b629-7ab62c2ed7f4/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:24:27,237 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 02:24:27,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:24:27,238 INFO L85 PathProgramCache]: Analyzing trace with hash -863830801, now seen corresponding path program 5 times [2022-11-23 02:24:27,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:24:27,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649988020] [2022-11-23 02:24:27,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:24:27,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:24:27,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:24:29,392 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-23 02:24:29,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:24:29,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649988020] [2022-11-23 02:24:29,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649988020] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:24:29,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:24:29,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 02:24:29,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774550876] [2022-11-23 02:24:29,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:24:29,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 02:24:29,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:24:29,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 02:24:29,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 02:24:29,852 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 680 out of 1699 [2022-11-23 02:24:29,855 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 66 transitions, 296 flow. Second operand has 5 states, 5 states have (on average 684.4) internal successors, (3422), 5 states have internal predecessors, (3422), 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) [2022-11-23 02:24:29,855 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:24:29,856 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 680 of 1699 [2022-11-23 02:24:29,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:24:32,902 INFO L130 PetriNetUnfolder]: 7939/10807 cut-off events. [2022-11-23 02:24:32,902 INFO L131 PetriNetUnfolder]: For 1808/1808 co-relation queries the response was YES. [2022-11-23 02:24:32,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23194 conditions, 10807 events. 7939/10807 cut-off events. For 1808/1808 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 51973 event pairs, 1252 based on Foata normal form. 1/8396 useless extension candidates. Maximal degree in co-relation 23081. Up to 3855 conditions per place. [2022-11-23 02:24:32,971 INFO L137 encePairwiseOnDemand]: 1686/1699 looper letters, 164 selfloop transitions, 42 changer transitions 1/207 dead transitions. [2022-11-23 02:24:32,971 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 207 transitions, 1060 flow [2022-11-23 02:24:32,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 02:24:32,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-23 02:24:32,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4948 transitions. [2022-11-23 02:24:32,985 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41604305053392754 [2022-11-23 02:24:32,986 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4948 transitions. [2022-11-23 02:24:32,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4948 transitions. [2022-11-23 02:24:32,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:24:32,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4948 transitions. [2022-11-23 02:24:32,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 706.8571428571429) internal successors, (4948), 7 states have internal predecessors, (4948), 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) [2022-11-23 02:24:33,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1699.0) internal successors, (13592), 8 states have internal predecessors, (13592), 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) [2022-11-23 02:24:33,025 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1699.0) internal successors, (13592), 8 states have internal predecessors, (13592), 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) [2022-11-23 02:24:33,025 INFO L175 Difference]: Start difference. First operand has 64 places, 66 transitions, 296 flow. Second operand 7 states and 4948 transitions. [2022-11-23 02:24:33,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 207 transitions, 1060 flow [2022-11-23 02:24:33,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 207 transitions, 1024 flow, removed 6 selfloop flow, removed 4 redundant places. [2022-11-23 02:24:33,041 INFO L231 Difference]: Finished difference. Result has 71 places, 109 transitions, 587 flow [2022-11-23 02:24:33,041 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1699, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=587, PETRI_PLACES=71, PETRI_TRANSITIONS=109} [2022-11-23 02:24:33,044 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, 25 predicate places. [2022-11-23 02:24:33,044 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 109 transitions, 587 flow [2022-11-23 02:24:33,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 684.4) internal successors, (3422), 5 states have internal predecessors, (3422), 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) [2022-11-23 02:24:33,045 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:24:33,046 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:24:33,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 02:24:33,046 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 02:24:33,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:24:33,047 INFO L85 PathProgramCache]: Analyzing trace with hash 755652597, now seen corresponding path program 6 times [2022-11-23 02:24:33,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:24:33,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256080326] [2022-11-23 02:24:33,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:24:33,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:24:33,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:24:35,207 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-23 02:24:35,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:24:35,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256080326] [2022-11-23 02:24:35,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256080326] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:24:35,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:24:35,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 02:24:35,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270859759] [2022-11-23 02:24:35,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:24:35,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 02:24:35,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:24:35,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 02:24:35,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 02:24:35,592 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 680 out of 1699 [2022-11-23 02:24:35,595 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 109 transitions, 587 flow. Second operand has 5 states, 5 states have (on average 684.4) internal successors, (3422), 5 states have internal predecessors, (3422), 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) [2022-11-23 02:24:35,595 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:24:35,595 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 680 of 1699 [2022-11-23 02:24:35,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:24:39,193 INFO L130 PetriNetUnfolder]: 10285/13988 cut-off events. [2022-11-23 02:24:39,194 INFO L131 PetriNetUnfolder]: For 9963/9963 co-relation queries the response was YES. [2022-11-23 02:24:39,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39499 conditions, 13988 events. 10285/13988 cut-off events. For 9963/9963 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 68333 event pairs, 2739 based on Foata normal form. 1/11107 useless extension candidates. Maximal degree in co-relation 39399. Up to 7504 conditions per place. [2022-11-23 02:24:39,295 INFO L137 encePairwiseOnDemand]: 1686/1699 looper letters, 155 selfloop transitions, 47 changer transitions 2/204 dead transitions. [2022-11-23 02:24:39,295 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 204 transitions, 1387 flow [2022-11-23 02:24:39,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 02:24:39,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-23 02:24:39,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3518 transitions. [2022-11-23 02:24:39,305 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41412595644496764 [2022-11-23 02:24:39,305 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3518 transitions. [2022-11-23 02:24:39,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3518 transitions. [2022-11-23 02:24:39,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:24:39,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3518 transitions. [2022-11-23 02:24:39,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 703.6) internal successors, (3518), 5 states have internal predecessors, (3518), 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) [2022-11-23 02:24:39,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1699.0) internal successors, (10194), 6 states have internal predecessors, (10194), 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) [2022-11-23 02:24:39,333 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1699.0) internal successors, (10194), 6 states have internal predecessors, (10194), 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) [2022-11-23 02:24:39,333 INFO L175 Difference]: Start difference. First operand has 71 places, 109 transitions, 587 flow. Second operand 5 states and 3518 transitions. [2022-11-23 02:24:39,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 204 transitions, 1387 flow [2022-11-23 02:24:39,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 204 transitions, 1379 flow, removed 4 selfloop flow, removed 0 redundant places. [2022-11-23 02:24:39,481 INFO L231 Difference]: Finished difference. Result has 79 places, 146 transitions, 1039 flow [2022-11-23 02:24:39,481 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1699, PETRI_DIFFERENCE_MINUEND_FLOW=579, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1039, PETRI_PLACES=79, PETRI_TRANSITIONS=146} [2022-11-23 02:24:39,482 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, 33 predicate places. [2022-11-23 02:24:39,482 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 146 transitions, 1039 flow [2022-11-23 02:24:39,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 684.4) internal successors, (3422), 5 states have internal predecessors, (3422), 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) [2022-11-23 02:24:39,484 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:24:39,484 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:24:39,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 02:24:39,485 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 02:24:39,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:24:39,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1867495533, now seen corresponding path program 7 times [2022-11-23 02:24:39,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:24:39,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895172864] [2022-11-23 02:24:39,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:24:39,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:24:39,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:24:41,435 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-23 02:24:41,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:24:41,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895172864] [2022-11-23 02:24:41,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895172864] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:24:41,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:24:41,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 02:24:41,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837463580] [2022-11-23 02:24:41,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:24:41,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 02:24:41,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:24:41,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 02:24:41,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 02:24:41,819 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 680 out of 1699 [2022-11-23 02:24:41,823 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 146 transitions, 1039 flow. Second operand has 5 states, 5 states have (on average 684.4) internal successors, (3422), 5 states have internal predecessors, (3422), 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) [2022-11-23 02:24:41,823 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:24:41,823 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 680 of 1699 [2022-11-23 02:24:41,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:24:45,947 INFO L130 PetriNetUnfolder]: 10722/14647 cut-off events. [2022-11-23 02:24:45,948 INFO L131 PetriNetUnfolder]: For 19293/19293 co-relation queries the response was YES. [2022-11-23 02:24:46,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45986 conditions, 14647 events. 10722/14647 cut-off events. For 19293/19293 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 73209 event pairs, 4621 based on Foata normal form. 1/11640 useless extension candidates. Maximal degree in co-relation 45882. Up to 12088 conditions per place. [2022-11-23 02:24:46,069 INFO L137 encePairwiseOnDemand]: 1687/1699 looper letters, 203 selfloop transitions, 43 changer transitions 2/248 dead transitions. [2022-11-23 02:24:46,069 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 248 transitions, 2064 flow [2022-11-23 02:24:46,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 02:24:46,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-23 02:24:46,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3529 transitions. [2022-11-23 02:24:46,079 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41542083578575634 [2022-11-23 02:24:46,080 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3529 transitions. [2022-11-23 02:24:46,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3529 transitions. [2022-11-23 02:24:46,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:24:46,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3529 transitions. [2022-11-23 02:24:46,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 705.8) internal successors, (3529), 5 states have internal predecessors, (3529), 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) [2022-11-23 02:24:46,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1699.0) internal successors, (10194), 6 states have internal predecessors, (10194), 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) [2022-11-23 02:24:46,112 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1699.0) internal successors, (10194), 6 states have internal predecessors, (10194), 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) [2022-11-23 02:24:46,112 INFO L175 Difference]: Start difference. First operand has 79 places, 146 transitions, 1039 flow. Second operand 5 states and 3529 transitions. [2022-11-23 02:24:46,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 248 transitions, 2064 flow [2022-11-23 02:24:46,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 248 transitions, 2052 flow, removed 6 selfloop flow, removed 0 redundant places. [2022-11-23 02:24:46,334 INFO L231 Difference]: Finished difference. Result has 86 places, 173 transitions, 1468 flow [2022-11-23 02:24:46,334 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1699, PETRI_DIFFERENCE_MINUEND_FLOW=1031, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1468, PETRI_PLACES=86, PETRI_TRANSITIONS=173} [2022-11-23 02:24:46,337 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, 40 predicate places. [2022-11-23 02:24:46,338 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 173 transitions, 1468 flow [2022-11-23 02:24:46,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 684.4) internal successors, (3422), 5 states have internal predecessors, (3422), 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) [2022-11-23 02:24:46,340 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:24:46,340 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:24:46,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 02:24:46,341 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 02:24:46,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:24:46,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1033694959, now seen corresponding path program 8 times [2022-11-23 02:24:46,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:24:46,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846895058] [2022-11-23 02:24:46,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:24:46,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:24:46,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:24:48,161 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-23 02:24:48,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:24:48,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846895058] [2022-11-23 02:24:48,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846895058] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:24:48,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:24:48,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 02:24:48,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964057225] [2022-11-23 02:24:48,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:24:48,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 02:24:48,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:24:48,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 02:24:48,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 02:24:48,541 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 680 out of 1699 [2022-11-23 02:24:48,544 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 173 transitions, 1468 flow. Second operand has 5 states, 5 states have (on average 684.4) internal successors, (3422), 5 states have internal predecessors, (3422), 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) [2022-11-23 02:24:48,545 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:24:48,545 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 680 of 1699 [2022-11-23 02:24:48,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:24:52,961 INFO L130 PetriNetUnfolder]: 10875/14878 cut-off events. [2022-11-23 02:24:52,961 INFO L131 PetriNetUnfolder]: For 27454/27454 co-relation queries the response was YES. [2022-11-23 02:24:53,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51000 conditions, 14878 events. 10875/14878 cut-off events. For 27454/27454 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 75317 event pairs, 2601 based on Foata normal form. 1/11817 useless extension candidates. Maximal degree in co-relation 50892. Up to 7630 conditions per place. [2022-11-23 02:24:53,092 INFO L137 encePairwiseOnDemand]: 1691/1699 looper letters, 200 selfloop transitions, 41 changer transitions 2/243 dead transitions. [2022-11-23 02:24:53,092 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 243 transitions, 2285 flow [2022-11-23 02:24:53,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 02:24:53,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-23 02:24:53,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3521 transitions. [2022-11-23 02:24:53,102 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41447910535609184 [2022-11-23 02:24:53,102 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3521 transitions. [2022-11-23 02:24:53,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3521 transitions. [2022-11-23 02:24:53,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:24:53,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3521 transitions. [2022-11-23 02:24:53,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 704.2) internal successors, (3521), 5 states have internal predecessors, (3521), 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) [2022-11-23 02:24:53,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1699.0) internal successors, (10194), 6 states have internal predecessors, (10194), 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) [2022-11-23 02:24:53,128 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1699.0) internal successors, (10194), 6 states have internal predecessors, (10194), 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) [2022-11-23 02:24:53,128 INFO L175 Difference]: Start difference. First operand has 86 places, 173 transitions, 1468 flow. Second operand 5 states and 3521 transitions. [2022-11-23 02:24:53,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 243 transitions, 2285 flow [2022-11-23 02:24:53,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 243 transitions, 2277 flow, removed 4 selfloop flow, removed 0 redundant places. [2022-11-23 02:24:53,441 INFO L231 Difference]: Finished difference. Result has 92 places, 180 transitions, 1651 flow [2022-11-23 02:24:53,441 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1699, PETRI_DIFFERENCE_MINUEND_FLOW=1464, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1651, PETRI_PLACES=92, PETRI_TRANSITIONS=180} [2022-11-23 02:24:53,442 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, 46 predicate places. [2022-11-23 02:24:53,442 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 180 transitions, 1651 flow [2022-11-23 02:24:53,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 684.4) internal successors, (3422), 5 states have internal predecessors, (3422), 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) [2022-11-23 02:24:53,444 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:24:53,444 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:24:53,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 02:24:53,445 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 02:24:53,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:24:53,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1852949305, now seen corresponding path program 1 times [2022-11-23 02:24:53,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:24:53,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670414171] [2022-11-23 02:24:53,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:24:53,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:24:53,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:24:53,663 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-23 02:24:53,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:24:53,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670414171] [2022-11-23 02:24:53,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670414171] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:24:53,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:24:53,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 02:24:53,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483689885] [2022-11-23 02:24:53,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:24:53,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:24:53,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:24:53,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:24:53,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:24:53,730 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 710 out of 1699 [2022-11-23 02:24:53,732 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 180 transitions, 1651 flow. Second operand has 3 states, 3 states have (on average 717.6666666666666) internal successors, (2153), 3 states have internal predecessors, (2153), 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) [2022-11-23 02:24:53,732 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:24:53,732 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 710 of 1699 [2022-11-23 02:24:53,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:24:59,382 INFO L130 PetriNetUnfolder]: 15958/21706 cut-off events. [2022-11-23 02:24:59,383 INFO L131 PetriNetUnfolder]: For 48017/48017 co-relation queries the response was YES. [2022-11-23 02:24:59,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77683 conditions, 21706 events. 15958/21706 cut-off events. For 48017/48017 co-relation queries the response was YES. Maximal size of possible extension queue 687. Compared 112193 event pairs, 5575 based on Foata normal form. 0/17404 useless extension candidates. Maximal degree in co-relation 77572. Up to 15263 conditions per place. [2022-11-23 02:24:59,599 INFO L137 encePairwiseOnDemand]: 1694/1699 looper letters, 230 selfloop transitions, 9 changer transitions 0/239 dead transitions. [2022-11-23 02:24:59,599 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 239 transitions, 2529 flow [2022-11-23 02:24:59,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:24:59,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:24:59,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2210 transitions. [2022-11-23 02:24:59,607 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4335883853247008 [2022-11-23 02:24:59,607 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2210 transitions. [2022-11-23 02:24:59,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2210 transitions. [2022-11-23 02:24:59,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:24:59,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2210 transitions. [2022-11-23 02:24:59,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 736.6666666666666) internal successors, (2210), 3 states have internal predecessors, (2210), 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) [2022-11-23 02:24:59,623 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1699.0) internal successors, (6796), 4 states have internal predecessors, (6796), 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) [2022-11-23 02:24:59,625 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1699.0) internal successors, (6796), 4 states have internal predecessors, (6796), 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) [2022-11-23 02:24:59,625 INFO L175 Difference]: Start difference. First operand has 92 places, 180 transitions, 1651 flow. Second operand 3 states and 2210 transitions. [2022-11-23 02:24:59,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 239 transitions, 2529 flow [2022-11-23 02:25:00,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 239 transitions, 2462 flow, removed 12 selfloop flow, removed 2 redundant places. [2022-11-23 02:25:00,224 INFO L231 Difference]: Finished difference. Result has 93 places, 182 transitions, 1627 flow [2022-11-23 02:25:00,225 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1699, PETRI_DIFFERENCE_MINUEND_FLOW=1588, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1627, PETRI_PLACES=93, PETRI_TRANSITIONS=182} [2022-11-23 02:25:00,225 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, 47 predicate places. [2022-11-23 02:25:00,226 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 182 transitions, 1627 flow [2022-11-23 02:25:00,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 717.6666666666666) internal successors, (2153), 3 states have internal predecessors, (2153), 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) [2022-11-23 02:25:00,226 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:25:00,226 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:25:00,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 02:25:00,227 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 02:25:00,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:25:00,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1064343492, now seen corresponding path program 1 times [2022-11-23 02:25:00,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:25:00,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120281922] [2022-11-23 02:25:00,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:25:00,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:25:00,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:25:00,502 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-23 02:25:00,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:25:00,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120281922] [2022-11-23 02:25:00,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120281922] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:25:00,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:25:00,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 02:25:00,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183542279] [2022-11-23 02:25:00,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:25:00,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:25:00,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:25:00,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:25:00,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:25:00,573 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 710 out of 1699 [2022-11-23 02:25:00,576 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 182 transitions, 1627 flow. Second operand has 3 states, 3 states have (on average 717.6666666666666) internal successors, (2153), 3 states have internal predecessors, (2153), 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) [2022-11-23 02:25:00,576 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:25:00,577 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 710 of 1699 [2022-11-23 02:25:00,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:25:08,328 INFO L130 PetriNetUnfolder]: 23006/31270 cut-off events. [2022-11-23 02:25:08,328 INFO L131 PetriNetUnfolder]: For 62979/62979 co-relation queries the response was YES. [2022-11-23 02:25:08,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108651 conditions, 31270 events. 23006/31270 cut-off events. For 62979/62979 co-relation queries the response was YES. Maximal size of possible extension queue 881. Compared 167228 event pairs, 8821 based on Foata normal form. 388/26244 useless extension candidates. Maximal degree in co-relation 108540. Up to 21229 conditions per place. [2022-11-23 02:25:08,611 INFO L137 encePairwiseOnDemand]: 1694/1699 looper letters, 229 selfloop transitions, 12 changer transitions 0/241 dead transitions. [2022-11-23 02:25:08,611 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 241 transitions, 2554 flow [2022-11-23 02:25:08,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:25:08,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:25:08,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2210 transitions. [2022-11-23 02:25:08,618 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4335883853247008 [2022-11-23 02:25:08,619 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2210 transitions. [2022-11-23 02:25:08,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2210 transitions. [2022-11-23 02:25:08,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:25:08,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2210 transitions. [2022-11-23 02:25:08,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 736.6666666666666) internal successors, (2210), 3 states have internal predecessors, (2210), 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) [2022-11-23 02:25:08,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1699.0) internal successors, (6796), 4 states have internal predecessors, (6796), 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) [2022-11-23 02:25:08,637 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1699.0) internal successors, (6796), 4 states have internal predecessors, (6796), 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) [2022-11-23 02:25:08,637 INFO L175 Difference]: Start difference. First operand has 93 places, 182 transitions, 1627 flow. Second operand 3 states and 2210 transitions. [2022-11-23 02:25:08,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 241 transitions, 2554 flow [2022-11-23 02:25:09,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 241 transitions, 2537 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 02:25:09,654 INFO L231 Difference]: Finished difference. Result has 95 places, 173 transitions, 1547 flow [2022-11-23 02:25:09,655 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1699, PETRI_DIFFERENCE_MINUEND_FLOW=1495, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1547, PETRI_PLACES=95, PETRI_TRANSITIONS=173} [2022-11-23 02:25:09,655 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, 49 predicate places. [2022-11-23 02:25:09,655 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 173 transitions, 1547 flow [2022-11-23 02:25:09,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 717.6666666666666) internal successors, (2153), 3 states have internal predecessors, (2153), 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) [2022-11-23 02:25:09,656 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:25:09,656 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:25:09,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-23 02:25:09,657 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 02:25:09,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:25:09,657 INFO L85 PathProgramCache]: Analyzing trace with hash -23346958, now seen corresponding path program 1 times [2022-11-23 02:25:09,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:25:09,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442075943] [2022-11-23 02:25:09,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:25:09,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:25:09,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:25:09,935 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-23 02:25:09,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:25:09,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442075943] [2022-11-23 02:25:09,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442075943] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:25:09,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:25:09,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 02:25:09,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834615446] [2022-11-23 02:25:09,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:25:09,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:25:09,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:25:09,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:25:09,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:25:09,998 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 710 out of 1699 [2022-11-23 02:25:10,001 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 173 transitions, 1547 flow. Second operand has 3 states, 3 states have (on average 717.6666666666666) internal successors, (2153), 3 states have internal predecessors, (2153), 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) [2022-11-23 02:25:10,001 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:25:10,001 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 710 of 1699 [2022-11-23 02:25:10,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand