./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f055d59-8e90-49d5-b69f-1859c207e6e8/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f055d59-8e90-49d5-b69f-1859c207e6e8/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f055d59-8e90-49d5-b69f-1859c207e6e8/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f055d59-8e90-49d5-b69f-1859c207e6e8/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f055d59-8e90-49d5-b69f-1859c207e6e8/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f055d59-8e90-49d5-b69f-1859c207e6e8/bin/uautomizer-vX5HgA9Q3a --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 d721a74d879c75d156b7dfbd9383140c70ef6831602ea84a0f8988cd7fdc0c32 --- 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-b5237d8 [2022-11-21 09:16:19,934 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 09:16:19,936 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 09:16:19,961 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 09:16:19,961 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 09:16:19,965 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 09:16:19,969 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 09:16:19,973 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 09:16:19,976 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 09:16:19,984 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 09:16:19,986 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 09:16:19,988 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 09:16:19,988 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 09:16:19,995 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 09:16:19,996 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 09:16:19,998 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 09:16:19,999 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 09:16:20,000 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 09:16:20,001 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 09:16:20,003 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 09:16:20,004 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 09:16:20,006 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 09:16:20,008 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 09:16:20,010 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 09:16:20,014 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 09:16:20,024 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 09:16:20,025 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 09:16:20,026 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 09:16:20,027 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 09:16:20,028 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 09:16:20,028 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 09:16:20,029 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 09:16:20,030 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 09:16:20,030 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 09:16:20,031 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 09:16:20,036 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 09:16:20,037 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 09:16:20,038 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 09:16:20,038 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 09:16:20,039 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 09:16:20,040 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 09:16:20,041 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f055d59-8e90-49d5-b69f-1859c207e6e8/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 09:16:20,082 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 09:16:20,088 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 09:16:20,089 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 09:16:20,089 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 09:16:20,090 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 09:16:20,091 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 09:16:20,092 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 09:16:20,092 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 09:16:20,092 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 09:16:20,092 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 09:16:20,093 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 09:16:20,094 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 09:16:20,094 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 09:16:20,094 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 09:16:20,094 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 09:16:20,095 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 09:16:20,095 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 09:16:20,095 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 09:16:20,095 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 09:16:20,095 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 09:16:20,096 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 09:16:20,096 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 09:16:20,096 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 09:16:20,096 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 09:16:20,097 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 09:16:20,097 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 09:16:20,097 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 09:16:20,097 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 09:16:20,098 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 09:16:20,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 09:16:20,099 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 09:16:20,099 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 09:16:20,099 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 09:16:20,100 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f055d59-8e90-49d5-b69f-1859c207e6e8/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f055d59-8e90-49d5-b69f-1859c207e6e8/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d721a74d879c75d156b7dfbd9383140c70ef6831602ea84a0f8988cd7fdc0c32 [2022-11-21 09:16:20,403 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 09:16:20,435 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 09:16:20,438 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 09:16:20,439 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 09:16:20,440 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 09:16:20,442 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f055d59-8e90-49d5-b69f-1859c207e6e8/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c [2022-11-21 09:16:23,629 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 09:16:23,908 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 09:16:23,909 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f055d59-8e90-49d5-b69f-1859c207e6e8/sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c [2022-11-21 09:16:23,916 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f055d59-8e90-49d5-b69f-1859c207e6e8/bin/uautomizer-vX5HgA9Q3a/data/70fe3ba59/72a569bb045444f2b6d97c3f1de1a40f/FLAG918680d5d [2022-11-21 09:16:23,934 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f055d59-8e90-49d5-b69f-1859c207e6e8/bin/uautomizer-vX5HgA9Q3a/data/70fe3ba59/72a569bb045444f2b6d97c3f1de1a40f [2022-11-21 09:16:23,937 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 09:16:23,939 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 09:16:23,940 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 09:16:23,941 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 09:16:23,945 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 09:16:23,946 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:16:23" (1/1) ... [2022-11-21 09:16:23,947 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cec02dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:16:23, skipping insertion in model container [2022-11-21 09:16:23,947 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:16:23" (1/1) ... [2022-11-21 09:16:23,956 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 09:16:23,980 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 09:16:24,200 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_0f055d59-8e90-49d5-b69f-1859c207e6e8/sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c[3770,3783] [2022-11-21 09:16:24,213 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 09:16:24,224 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 09:16:24,261 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_0f055d59-8e90-49d5-b69f-1859c207e6e8/sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c[3770,3783] [2022-11-21 09:16:24,277 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 09:16:24,298 INFO L208 MainTranslator]: Completed translation [2022-11-21 09:16:24,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:16:24 WrapperNode [2022-11-21 09:16:24,299 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 09:16:24,300 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 09:16:24,300 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 09:16:24,300 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 09:16:24,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:16:24" (1/1) ... [2022-11-21 09:16:24,319 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:16:24" (1/1) ... [2022-11-21 09:16:24,359 INFO L138 Inliner]: procedures = 27, calls = 73, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 245 [2022-11-21 09:16:24,365 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 09:16:24,366 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 09:16:24,367 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 09:16:24,367 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 09:16:24,379 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:16:24" (1/1) ... [2022-11-21 09:16:24,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:16:24" (1/1) ... [2022-11-21 09:16:24,402 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:16:24" (1/1) ... [2022-11-21 09:16:24,403 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:16:24" (1/1) ... [2022-11-21 09:16:24,416 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:16:24" (1/1) ... [2022-11-21 09:16:24,439 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:16:24" (1/1) ... [2022-11-21 09:16:24,442 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:16:24" (1/1) ... [2022-11-21 09:16:24,444 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:16:24" (1/1) ... [2022-11-21 09:16:24,447 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 09:16:24,463 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 09:16:24,463 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 09:16:24,463 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 09:16:24,464 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:16:24" (1/1) ... [2022-11-21 09:16:24,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 09:16:24,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f055d59-8e90-49d5-b69f-1859c207e6e8/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:16:24,505 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f055d59-8e90-49d5-b69f-1859c207e6e8/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 09:16:24,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f055d59-8e90-49d5-b69f-1859c207e6e8/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 09:16:24,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 09:16:24,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 09:16:24,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 09:16:24,556 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 09:16:24,556 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-21 09:16:24,557 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-21 09:16:24,557 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-21 09:16:24,557 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-21 09:16:24,557 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-21 09:16:24,557 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-21 09:16:24,557 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-21 09:16:24,558 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-21 09:16:24,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 09:16:24,558 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-21 09:16:24,558 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-21 09:16:24,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-21 09:16:24,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 09:16:24,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 09:16:24,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 09:16:24,561 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 09:16:24,765 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 09:16:24,767 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 09:16:25,289 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 09:16:25,517 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 09:16:25,517 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-21 09:16:25,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:16:25 BoogieIcfgContainer [2022-11-21 09:16:25,521 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 09:16:25,523 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 09:16:25,523 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 09:16:25,527 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 09:16:25,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 09:16:23" (1/3) ... [2022-11-21 09:16:25,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c568e97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:16:25, skipping insertion in model container [2022-11-21 09:16:25,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:16:24" (2/3) ... [2022-11-21 09:16:25,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c568e97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:16:25, skipping insertion in model container [2022-11-21 09:16:25,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:16:25" (3/3) ... [2022-11-21 09:16:25,531 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-equiv.wvr.c [2022-11-21 09:16:25,541 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 09:16:25,554 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 09:16:25,554 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 09:16:25,554 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 09:16:25,688 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2022-11-21 09:16:25,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 204 places, 205 transitions, 454 flow [2022-11-21 09:16:25,821 INFO L130 PetriNetUnfolder]: 14/190 cut-off events. [2022-11-21 09:16:25,821 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-21 09:16:25,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 190 events. 14/190 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 160 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 162. Up to 3 conditions per place. [2022-11-21 09:16:25,829 INFO L82 GeneralOperation]: Start removeDead. Operand has 204 places, 205 transitions, 454 flow [2022-11-21 09:16:25,835 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 180 places, 181 transitions, 392 flow [2022-11-21 09:16:25,850 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 09:16:25,860 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;@e14b3ec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 09:16:25,862 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-21 09:16:25,948 INFO L130 PetriNetUnfolder]: 14/180 cut-off events. [2022-11-21 09:16:25,948 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-21 09:16:25,949 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:16:25,950 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:16:25,951 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-21 09:16:25,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:16:25,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1467035071, now seen corresponding path program 1 times [2022-11-21 09:16:25,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:16:25,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627996417] [2022-11-21 09:16:25,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:16:25,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:16:26,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:26,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:16:26,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:16:26,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627996417] [2022-11-21 09:16:26,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627996417] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:16:26,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:16:26,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 09:16:26,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044182843] [2022-11-21 09:16:26,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:16:26,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-21 09:16:26,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:16:26,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-21 09:16:26,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 09:16:26,394 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 207 [2022-11-21 09:16:26,397 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 181 transitions, 392 flow. Second operand has 2 states, 2 states have (on average 181.5) internal successors, (363), 2 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:16:26,398 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:16:26,398 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 207 [2022-11-21 09:16:26,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:16:26,706 INFO L130 PetriNetUnfolder]: 191/594 cut-off events. [2022-11-21 09:16:26,706 INFO L131 PetriNetUnfolder]: For 114/114 co-relation queries the response was YES. [2022-11-21 09:16:26,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1008 conditions, 594 events. 191/594 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2258 event pairs, 111 based on Foata normal form. 64/606 useless extension candidates. Maximal degree in co-relation 865. Up to 286 conditions per place. [2022-11-21 09:16:26,720 INFO L137 encePairwiseOnDemand]: 199/207 looper letters, 21 selfloop transitions, 0 changer transitions 4/173 dead transitions. [2022-11-21 09:16:26,721 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 173 transitions, 418 flow [2022-11-21 09:16:26,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-21 09:16:26,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-21 09:16:26,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 375 transitions. [2022-11-21 09:16:26,744 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9057971014492754 [2022-11-21 09:16:26,745 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 375 transitions. [2022-11-21 09:16:26,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 375 transitions. [2022-11-21 09:16:26,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:16:26,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 375 transitions. [2022-11-21 09:16:26,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 187.5) internal successors, (375), 2 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:16:26,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 207.0) internal successors, (621), 3 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:16:26,770 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 207.0) internal successors, (621), 3 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:16:26,773 INFO L175 Difference]: Start difference. First operand has 180 places, 181 transitions, 392 flow. Second operand 2 states and 375 transitions. [2022-11-21 09:16:26,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 173 transitions, 418 flow [2022-11-21 09:16:26,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 173 transitions, 398 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-21 09:16:26,788 INFO L231 Difference]: Finished difference. Result has 173 places, 169 transitions, 348 flow [2022-11-21 09:16:26,791 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=348, PETRI_PLACES=173, PETRI_TRANSITIONS=169} [2022-11-21 09:16:26,798 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, -7 predicate places. [2022-11-21 09:16:26,799 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 169 transitions, 348 flow [2022-11-21 09:16:26,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 181.5) internal successors, (363), 2 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:16:26,799 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:16:26,800 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:16:26,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 09:16:26,801 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-21 09:16:26,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:16:26,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1127857623, now seen corresponding path program 1 times [2022-11-21 09:16:26,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:16:26,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445561398] [2022-11-21 09:16:26,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:16:26,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:16:27,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:27,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:16:27,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:16:27,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445561398] [2022-11-21 09:16:27,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445561398] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:16:27,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:16:27,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 09:16:27,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827267484] [2022-11-21 09:16:27,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:16:27,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 09:16:27,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:16:27,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 09:16:27,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 09:16:27,461 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 207 [2022-11-21 09:16:27,462 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 169 transitions, 348 flow. Second operand has 6 states, 6 states have (on average 154.5) internal successors, (927), 6 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:16:27,463 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:16:27,463 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 207 [2022-11-21 09:16:27,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:16:28,050 INFO L130 PetriNetUnfolder]: 481/1385 cut-off events. [2022-11-21 09:16:28,050 INFO L131 PetriNetUnfolder]: For 66/66 co-relation queries the response was YES. [2022-11-21 09:16:28,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2212 conditions, 1385 events. 481/1385 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 8488 event pairs, 149 based on Foata normal form. 1/1264 useless extension candidates. Maximal degree in co-relation 2209. Up to 353 conditions per place. [2022-11-21 09:16:28,062 INFO L137 encePairwiseOnDemand]: 196/207 looper letters, 69 selfloop transitions, 10 changer transitions 4/211 dead transitions. [2022-11-21 09:16:28,063 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 211 transitions, 614 flow [2022-11-21 09:16:28,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 09:16:28,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-21 09:16:28,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 978 transitions. [2022-11-21 09:16:28,068 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7874396135265701 [2022-11-21 09:16:28,069 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 978 transitions. [2022-11-21 09:16:28,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 978 transitions. [2022-11-21 09:16:28,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:16:28,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 978 transitions. [2022-11-21 09:16:28,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 163.0) internal successors, (978), 6 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:16:28,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 207.0) internal successors, (1449), 7 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:16:28,079 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 207.0) internal successors, (1449), 7 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:16:28,079 INFO L175 Difference]: Start difference. First operand has 173 places, 169 transitions, 348 flow. Second operand 6 states and 978 transitions. [2022-11-21 09:16:28,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 211 transitions, 614 flow [2022-11-21 09:16:28,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 211 transitions, 614 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 09:16:28,088 INFO L231 Difference]: Finished difference. Result has 178 places, 175 transitions, 407 flow [2022-11-21 09:16:28,089 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=407, PETRI_PLACES=178, PETRI_TRANSITIONS=175} [2022-11-21 09:16:28,090 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, -2 predicate places. [2022-11-21 09:16:28,091 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 175 transitions, 407 flow [2022-11-21 09:16:28,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 154.5) internal successors, (927), 6 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:16:28,092 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:16:28,092 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:16:28,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 09:16:28,092 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-21 09:16:28,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:16:28,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1017906927, now seen corresponding path program 2 times [2022-11-21 09:16:28,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:16:28,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544741910] [2022-11-21 09:16:28,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:16:28,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:16:28,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:28,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:16:28,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:16:28,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544741910] [2022-11-21 09:16:28,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544741910] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:16:28,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:16:28,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 09:16:28,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973471602] [2022-11-21 09:16:28,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:16:28,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 09:16:28,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:16:28,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 09:16:28,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 09:16:28,561 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 207 [2022-11-21 09:16:28,563 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 175 transitions, 407 flow. Second operand has 6 states, 6 states have (on average 154.5) internal successors, (927), 6 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:16:28,563 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:16:28,563 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 207 [2022-11-21 09:16:28,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:16:29,279 INFO L130 PetriNetUnfolder]: 703/1924 cut-off events. [2022-11-21 09:16:29,280 INFO L131 PetriNetUnfolder]: For 344/344 co-relation queries the response was YES. [2022-11-21 09:16:29,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3539 conditions, 1924 events. 703/1924 cut-off events. For 344/344 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 12969 event pairs, 240 based on Foata normal form. 1/1743 useless extension candidates. Maximal degree in co-relation 3531. Up to 590 conditions per place. [2022-11-21 09:16:29,299 INFO L137 encePairwiseOnDemand]: 197/207 looper letters, 75 selfloop transitions, 10 changer transitions 4/217 dead transitions. [2022-11-21 09:16:29,300 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 217 transitions, 712 flow [2022-11-21 09:16:29,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 09:16:29,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-21 09:16:29,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 978 transitions. [2022-11-21 09:16:29,305 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7874396135265701 [2022-11-21 09:16:29,305 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 978 transitions. [2022-11-21 09:16:29,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 978 transitions. [2022-11-21 09:16:29,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:16:29,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 978 transitions. [2022-11-21 09:16:29,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 163.0) internal successors, (978), 6 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:16:29,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 207.0) internal successors, (1449), 7 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:16:29,313 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 207.0) internal successors, (1449), 7 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:16:29,313 INFO L175 Difference]: Start difference. First operand has 178 places, 175 transitions, 407 flow. Second operand 6 states and 978 transitions. [2022-11-21 09:16:29,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 217 transitions, 712 flow [2022-11-21 09:16:29,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 217 transitions, 702 flow, removed 5 selfloop flow, removed 2 redundant places. [2022-11-21 09:16:29,323 INFO L231 Difference]: Finished difference. Result has 183 places, 180 transitions, 473 flow [2022-11-21 09:16:29,324 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=403, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=473, PETRI_PLACES=183, PETRI_TRANSITIONS=180} [2022-11-21 09:16:29,325 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, 3 predicate places. [2022-11-21 09:16:29,326 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 180 transitions, 473 flow [2022-11-21 09:16:29,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 154.5) internal successors, (927), 6 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:16:29,327 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:16:29,327 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:16:29,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 09:16:29,328 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-21 09:16:29,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:16:29,329 INFO L85 PathProgramCache]: Analyzing trace with hash -643086626, now seen corresponding path program 1 times [2022-11-21 09:16:29,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:16:29,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456437869] [2022-11-21 09:16:29,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:16:29,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:16:29,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:29,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:16:29,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:16:29,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456437869] [2022-11-21 09:16:29,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456437869] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:16:29,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:16:29,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 09:16:29,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800769004] [2022-11-21 09:16:29,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:16:29,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 09:16:29,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:16:29,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 09:16:29,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 09:16:29,861 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 207 [2022-11-21 09:16:29,863 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 180 transitions, 473 flow. Second operand has 7 states, 7 states have (on average 160.0) internal successors, (1120), 7 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:16:29,863 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:16:29,863 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 207 [2022-11-21 09:16:29,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:16:30,794 INFO L130 PetriNetUnfolder]: 1018/2906 cut-off events. [2022-11-21 09:16:30,794 INFO L131 PetriNetUnfolder]: For 1384/1384 co-relation queries the response was YES. [2022-11-21 09:16:30,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5645 conditions, 2906 events. 1018/2906 cut-off events. For 1384/1384 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 22008 event pairs, 398 based on Foata normal form. 54/2671 useless extension candidates. Maximal degree in co-relation 5634. Up to 777 conditions per place. [2022-11-21 09:16:30,821 INFO L137 encePairwiseOnDemand]: 199/207 looper letters, 107 selfloop transitions, 8 changer transitions 0/246 dead transitions. [2022-11-21 09:16:30,822 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 246 transitions, 967 flow [2022-11-21 09:16:30,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 09:16:30,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-21 09:16:30,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1339 transitions. [2022-11-21 09:16:30,827 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8085748792270532 [2022-11-21 09:16:30,831 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1339 transitions. [2022-11-21 09:16:30,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1339 transitions. [2022-11-21 09:16:30,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:16:30,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1339 transitions. [2022-11-21 09:16:30,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 167.375) internal successors, (1339), 8 states have internal predecessors, (1339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:16:30,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 207.0) internal successors, (1863), 9 states have internal predecessors, (1863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:16:30,843 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 207.0) internal successors, (1863), 9 states have internal predecessors, (1863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:16:30,844 INFO L175 Difference]: Start difference. First operand has 183 places, 180 transitions, 473 flow. Second operand 8 states and 1339 transitions. [2022-11-21 09:16:30,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 246 transitions, 967 flow [2022-11-21 09:16:30,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 246 transitions, 961 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-11-21 09:16:30,863 INFO L231 Difference]: Finished difference. Result has 190 places, 185 transitions, 529 flow [2022-11-21 09:16:30,863 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=529, PETRI_PLACES=190, PETRI_TRANSITIONS=185} [2022-11-21 09:16:30,865 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, 10 predicate places. [2022-11-21 09:16:30,866 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 185 transitions, 529 flow [2022-11-21 09:16:30,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 160.0) internal successors, (1120), 7 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:16:30,867 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:16:30,867 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:16:30,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 09:16:30,867 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-21 09:16:30,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:16:30,868 INFO L85 PathProgramCache]: Analyzing trace with hash -587709809, now seen corresponding path program 1 times [2022-11-21 09:16:30,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:16:30,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403004694] [2022-11-21 09:16:30,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:16:30,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:16:30,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:31,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:16:31,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:16:31,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403004694] [2022-11-21 09:16:31,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403004694] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:16:31,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:16:31,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 09:16:31,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113136074] [2022-11-21 09:16:31,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:16:31,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 09:16:31,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:16:31,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 09:16:31,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 09:16:31,296 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 207 [2022-11-21 09:16:31,298 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 185 transitions, 529 flow. Second operand has 7 states, 7 states have (on average 160.0) internal successors, (1120), 7 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:16:31,298 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:16:31,298 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 207 [2022-11-21 09:16:31,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:16:32,100 INFO L130 PetriNetUnfolder]: 723/2409 cut-off events. [2022-11-21 09:16:32,101 INFO L131 PetriNetUnfolder]: For 1558/1558 co-relation queries the response was YES. [2022-11-21 09:16:32,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4809 conditions, 2409 events. 723/2409 cut-off events. For 1558/1558 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 17702 event pairs, 206 based on Foata normal form. 93/2306 useless extension candidates. Maximal degree in co-relation 4795. Up to 609 conditions per place. [2022-11-21 09:16:32,121 INFO L137 encePairwiseOnDemand]: 197/207 looper letters, 67 selfloop transitions, 6 changer transitions 20/224 dead transitions. [2022-11-21 09:16:32,121 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 224 transitions, 894 flow [2022-11-21 09:16:32,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 09:16:32,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-21 09:16:32,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1323 transitions. [2022-11-21 09:16:32,126 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7989130434782609 [2022-11-21 09:16:32,126 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1323 transitions. [2022-11-21 09:16:32,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1323 transitions. [2022-11-21 09:16:32,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:16:32,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1323 transitions. [2022-11-21 09:16:32,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 165.375) internal successors, (1323), 8 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:16:32,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 207.0) internal successors, (1863), 9 states have internal predecessors, (1863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:16:32,135 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 207.0) internal successors, (1863), 9 states have internal predecessors, (1863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:16:32,135 INFO L175 Difference]: Start difference. First operand has 190 places, 185 transitions, 529 flow. Second operand 8 states and 1323 transitions. [2022-11-21 09:16:32,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 224 transitions, 894 flow [2022-11-21 09:16:32,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 224 transitions, 891 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 09:16:32,143 INFO L231 Difference]: Finished difference. Result has 199 places, 183 transitions, 531 flow [2022-11-21 09:16:32,144 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=531, PETRI_PLACES=199, PETRI_TRANSITIONS=183} [2022-11-21 09:16:32,147 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, 19 predicate places. [2022-11-21 09:16:32,147 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 183 transitions, 531 flow [2022-11-21 09:16:32,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 160.0) internal successors, (1120), 7 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:16:32,148 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:16:32,148 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:16:32,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 09:16:32,148 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-21 09:16:32,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:16:32,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1060492647, now seen corresponding path program 1 times [2022-11-21 09:16:32,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:16:32,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989579070] [2022-11-21 09:16:32,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:16:32,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:16:32,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:32,650 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:16:32,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:16:32,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989579070] [2022-11-21 09:16:32,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989579070] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 09:16:32,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692898564] [2022-11-21 09:16:32,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:16:32,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:16:32,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f055d59-8e90-49d5-b69f-1859c207e6e8/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:16:32,658 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f055d59-8e90-49d5-b69f-1859c207e6e8/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:16:32,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f055d59-8e90-49d5-b69f-1859c207e6e8/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 09:16:32,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:32,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-21 09:16:32,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:16:33,242 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:16:33,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:16:33,532 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:16:33,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692898564] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:16:33,533 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 09:16:33,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-21 09:16:33,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205979606] [2022-11-21 09:16:33,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 09:16:33,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-21 09:16:33,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:16:33,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-21 09:16:33,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2022-11-21 09:16:33,541 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 207 [2022-11-21 09:16:33,545 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 183 transitions, 531 flow. Second operand has 18 states, 18 states have (on average 158.05555555555554) internal successors, (2845), 18 states have internal predecessors, (2845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:16:33,546 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:16:33,546 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 207 [2022-11-21 09:16:33,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:16:34,695 INFO L130 PetriNetUnfolder]: 931/2874 cut-off events. [2022-11-21 09:16:34,696 INFO L131 PetriNetUnfolder]: For 2862/2862 co-relation queries the response was YES. [2022-11-21 09:16:34,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6656 conditions, 2874 events. 931/2874 cut-off events. For 2862/2862 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 22359 event pairs, 320 based on Foata normal form. 54/2659 useless extension candidates. Maximal degree in co-relation 6638. Up to 733 conditions per place. [2022-11-21 09:16:34,732 INFO L137 encePairwiseOnDemand]: 193/207 looper letters, 113 selfloop transitions, 16 changer transitions 0/259 dead transitions. [2022-11-21 09:16:34,732 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 259 transitions, 1152 flow [2022-11-21 09:16:34,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 09:16:34,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-21 09:16:34,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2267 transitions. [2022-11-21 09:16:34,738 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.782263630089717 [2022-11-21 09:16:34,738 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2267 transitions. [2022-11-21 09:16:34,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2267 transitions. [2022-11-21 09:16:34,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:16:34,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2267 transitions. [2022-11-21 09:16:34,747 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 161.92857142857142) internal successors, (2267), 14 states have internal predecessors, (2267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:16:34,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 207.0) internal successors, (3105), 15 states have internal predecessors, (3105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:16:34,755 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 207.0) internal successors, (3105), 15 states have internal predecessors, (3105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:16:34,755 INFO L175 Difference]: Start difference. First operand has 199 places, 183 transitions, 531 flow. Second operand 14 states and 2267 transitions. [2022-11-21 09:16:34,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 259 transitions, 1152 flow [2022-11-21 09:16:34,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 259 transitions, 1099 flow, removed 19 selfloop flow, removed 9 redundant places. [2022-11-21 09:16:34,775 INFO L231 Difference]: Finished difference. Result has 205 places, 191 transitions, 603 flow [2022-11-21 09:16:34,776 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=504, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=603, PETRI_PLACES=205, PETRI_TRANSITIONS=191} [2022-11-21 09:16:34,779 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, 25 predicate places. [2022-11-21 09:16:34,779 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 191 transitions, 603 flow [2022-11-21 09:16:34,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 158.05555555555554) internal successors, (2845), 18 states have internal predecessors, (2845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:16:34,782 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:16:34,782 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:16:34,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f055d59-8e90-49d5-b69f-1859c207e6e8/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 09:16:34,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f055d59-8e90-49d5-b69f-1859c207e6e8/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:16:34,996 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-21 09:16:34,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:16:34,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1393575078, now seen corresponding path program 1 times [2022-11-21 09:16:34,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:16:34,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090813518] [2022-11-21 09:16:34,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:16:34,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:16:35,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:35,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:16:35,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:16:35,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090813518] [2022-11-21 09:16:35,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090813518] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 09:16:35,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699229836] [2022-11-21 09:16:35,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:16:35,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:16:35,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f055d59-8e90-49d5-b69f-1859c207e6e8/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:16:35,474 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f055d59-8e90-49d5-b69f-1859c207e6e8/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:16:35,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f055d59-8e90-49d5-b69f-1859c207e6e8/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 09:16:35,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:35,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-21 09:16:35,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:16:35,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:16:35,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:16:36,190 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:16:36,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1699229836] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:16:36,191 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 09:16:36,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-21 09:16:36,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104090541] [2022-11-21 09:16:36,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 09:16:36,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-21 09:16:36,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:16:36,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-21 09:16:36,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2022-11-21 09:16:36,197 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 207 [2022-11-21 09:16:36,201 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 191 transitions, 603 flow. Second operand has 18 states, 18 states have (on average 158.16666666666666) internal successors, (2847), 18 states have internal predecessors, (2847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:16:36,201 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:16:36,201 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 207 [2022-11-21 09:16:36,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:16:37,066 INFO L130 PetriNetUnfolder]: 723/2424 cut-off events. [2022-11-21 09:16:37,066 INFO L131 PetriNetUnfolder]: For 2035/2035 co-relation queries the response was YES. [2022-11-21 09:16:37,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5368 conditions, 2424 events. 723/2424 cut-off events. For 2035/2035 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 17935 event pairs, 191 based on Foata normal form. 16/2235 useless extension candidates. Maximal degree in co-relation 5349. Up to 609 conditions per place. [2022-11-21 09:16:37,089 INFO L137 encePairwiseOnDemand]: 191/207 looper letters, 65 selfloop transitions, 14 changer transitions 22/231 dead transitions. [2022-11-21 09:16:37,089 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 231 transitions, 1004 flow [2022-11-21 09:16:37,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 09:16:37,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-21 09:16:37,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2249 transitions. [2022-11-21 09:16:37,095 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7760524499654935 [2022-11-21 09:16:37,096 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2249 transitions. [2022-11-21 09:16:37,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2249 transitions. [2022-11-21 09:16:37,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:16:37,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2249 transitions. [2022-11-21 09:16:37,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 160.64285714285714) internal successors, (2249), 14 states have internal predecessors, (2249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:16:37,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 207.0) internal successors, (3105), 15 states have internal predecessors, (3105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:16:37,110 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 207.0) internal successors, (3105), 15 states have internal predecessors, (3105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:16:37,110 INFO L175 Difference]: Start difference. First operand has 205 places, 191 transitions, 603 flow. Second operand 14 states and 2249 transitions. [2022-11-21 09:16:37,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 231 transitions, 1004 flow [2022-11-21 09:16:37,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 231 transitions, 987 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-11-21 09:16:37,118 INFO L231 Difference]: Finished difference. Result has 215 places, 187 transitions, 587 flow [2022-11-21 09:16:37,118 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=586, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=587, PETRI_PLACES=215, PETRI_TRANSITIONS=187} [2022-11-21 09:16:37,120 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, 35 predicate places. [2022-11-21 09:16:37,124 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 187 transitions, 587 flow [2022-11-21 09:16:37,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 158.16666666666666) internal successors, (2847), 18 states have internal predecessors, (2847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:16:37,126 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:16:37,126 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:16:37,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f055d59-8e90-49d5-b69f-1859c207e6e8/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 09:16:37,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f055d59-8e90-49d5-b69f-1859c207e6e8/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-21 09:16:37,333 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-21 09:16:37,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:16:37,334 INFO L85 PathProgramCache]: Analyzing trace with hash 2042272650, now seen corresponding path program 1 times [2022-11-21 09:16:37,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:16:37,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747622968] [2022-11-21 09:16:37,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:16:37,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:16:37,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:37,797 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 09:16:37,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:16:37,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747622968] [2022-11-21 09:16:37,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747622968] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 09:16:37,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436478567] [2022-11-21 09:16:37,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:16:37,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:16:37,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f055d59-8e90-49d5-b69f-1859c207e6e8/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:16:37,800 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f055d59-8e90-49d5-b69f-1859c207e6e8/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:16:37,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f055d59-8e90-49d5-b69f-1859c207e6e8/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 09:16:37,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:38,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-21 09:16:38,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:16:38,264 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 09:16:38,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:16:38,581 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 09:16:38,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436478567] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-21 09:16:38,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-21 09:16:38,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 9] total 18 [2022-11-21 09:16:38,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883754167] [2022-11-21 09:16:38,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:16:38,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 09:16:38,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:16:38,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 09:16:38,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2022-11-21 09:16:38,586 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 207 [2022-11-21 09:16:38,588 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 187 transitions, 587 flow. Second operand has 9 states, 9 states have (on average 159.22222222222223) internal successors, (1433), 9 states have internal predecessors, (1433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:16:38,589 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:16:38,589 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 207 [2022-11-21 09:16:38,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:16:39,164 INFO L130 PetriNetUnfolder]: 493/1507 cut-off events. [2022-11-21 09:16:39,165 INFO L131 PetriNetUnfolder]: For 1838/1838 co-relation queries the response was YES. [2022-11-21 09:16:39,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3718 conditions, 1507 events. 493/1507 cut-off events. For 1838/1838 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 9493 event pairs, 213 based on Foata normal form. 31/1408 useless extension candidates. Maximal degree in co-relation 3697. Up to 694 conditions per place. [2022-11-21 09:16:39,185 INFO L137 encePairwiseOnDemand]: 195/207 looper letters, 58 selfloop transitions, 11 changer transitions 0/199 dead transitions. [2022-11-21 09:16:39,185 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 199 transitions, 790 flow [2022-11-21 09:16:39,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 09:16:39,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-21 09:16:39,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1605 transitions. [2022-11-21 09:16:39,191 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7753623188405797 [2022-11-21 09:16:39,191 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1605 transitions. [2022-11-21 09:16:39,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1605 transitions. [2022-11-21 09:16:39,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:16:39,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1605 transitions. [2022-11-21 09:16:39,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 160.5) internal successors, (1605), 10 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:16:39,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 207.0) internal successors, (2277), 11 states have internal predecessors, (2277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:16:39,204 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 207.0) internal successors, (2277), 11 states have internal predecessors, (2277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:16:39,204 INFO L175 Difference]: Start difference. First operand has 215 places, 187 transitions, 587 flow. Second operand 10 states and 1605 transitions. [2022-11-21 09:16:39,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 199 transitions, 790 flow [2022-11-21 09:16:39,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 199 transitions, 740 flow, removed 13 selfloop flow, removed 14 redundant places. [2022-11-21 09:16:39,253 INFO L231 Difference]: Finished difference. Result has 208 places, 190 transitions, 595 flow [2022-11-21 09:16:39,253 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=545, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=595, PETRI_PLACES=208, PETRI_TRANSITIONS=190} [2022-11-21 09:16:39,256 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, 28 predicate places. [2022-11-21 09:16:39,256 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 190 transitions, 595 flow [2022-11-21 09:16:39,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 159.22222222222223) internal successors, (1433), 9 states have internal predecessors, (1433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:16:39,257 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:16:39,258 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:16:39,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f055d59-8e90-49d5-b69f-1859c207e6e8/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 09:16:39,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f055d59-8e90-49d5-b69f-1859c207e6e8/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:16:39,464 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-21 09:16:39,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:16:39,464 INFO L85 PathProgramCache]: Analyzing trace with hash -11487384, now seen corresponding path program 2 times [2022-11-21 09:16:39,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:16:39,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657360351] [2022-11-21 09:16:39,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:16:39,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:16:39,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:39,907 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 09:16:39,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:16:39,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657360351] [2022-11-21 09:16:39,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657360351] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 09:16:39,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355363652] [2022-11-21 09:16:39,909 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 09:16:39,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:16:39,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f055d59-8e90-49d5-b69f-1859c207e6e8/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:16:39,914 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f055d59-8e90-49d5-b69f-1859c207e6e8/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:16:39,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f055d59-8e90-49d5-b69f-1859c207e6e8/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 09:16:40,098 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 09:16:40,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 09:16:40,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-21 09:16:40,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:16:40,370 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 09:16:40,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:16:40,715 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 09:16:40,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355363652] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-21 09:16:40,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-21 09:16:40,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 9] total 18 [2022-11-21 09:16:40,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958076141] [2022-11-21 09:16:40,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:16:40,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 09:16:40,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:16:40,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 09:16:40,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2022-11-21 09:16:40,719 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 207 [2022-11-21 09:16:40,730 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 190 transitions, 595 flow. Second operand has 9 states, 9 states have (on average 159.22222222222223) internal successors, (1433), 9 states have internal predecessors, (1433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:16:40,737 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:16:40,738 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 207 [2022-11-21 09:16:40,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:16:41,258 INFO L130 PetriNetUnfolder]: 419/1263 cut-off events. [2022-11-21 09:16:41,259 INFO L131 PetriNetUnfolder]: For 1221/1221 co-relation queries the response was YES. [2022-11-21 09:16:41,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3096 conditions, 1263 events. 419/1263 cut-off events. For 1221/1221 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 7418 event pairs, 169 based on Foata normal form. 38/1188 useless extension candidates. Maximal degree in co-relation 3077. Up to 542 conditions per place. [2022-11-21 09:16:41,272 INFO L137 encePairwiseOnDemand]: 197/207 looper letters, 74 selfloop transitions, 10 changer transitions 0/214 dead transitions. [2022-11-21 09:16:41,272 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 214 transitions, 888 flow [2022-11-21 09:16:41,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 09:16:41,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-21 09:16:41,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1611 transitions. [2022-11-21 09:16:41,276 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7782608695652173 [2022-11-21 09:16:41,277 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1611 transitions. [2022-11-21 09:16:41,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1611 transitions. [2022-11-21 09:16:41,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:16:41,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1611 transitions. [2022-11-21 09:16:41,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 161.1) internal successors, (1611), 10 states have internal predecessors, (1611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:16:41,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 207.0) internal successors, (2277), 11 states have internal predecessors, (2277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:16:41,287 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 207.0) internal successors, (2277), 11 states have internal predecessors, (2277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:16:41,287 INFO L175 Difference]: Start difference. First operand has 208 places, 190 transitions, 595 flow. Second operand 10 states and 1611 transitions. [2022-11-21 09:16:41,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 214 transitions, 888 flow [2022-11-21 09:16:41,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 214 transitions, 857 flow, removed 6 selfloop flow, removed 7 redundant places. [2022-11-21 09:16:41,295 INFO L231 Difference]: Finished difference. Result has 211 places, 191 transitions, 600 flow [2022-11-21 09:16:41,295 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=571, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=600, PETRI_PLACES=211, PETRI_TRANSITIONS=191} [2022-11-21 09:16:41,297 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, 31 predicate places. [2022-11-21 09:16:41,297 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 191 transitions, 600 flow [2022-11-21 09:16:41,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 159.22222222222223) internal successors, (1433), 9 states have internal predecessors, (1433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:16:41,298 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:16:41,298 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:16:41,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f055d59-8e90-49d5-b69f-1859c207e6e8/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-21 09:16:41,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f055d59-8e90-49d5-b69f-1859c207e6e8/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:16:41,505 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-21 09:16:41,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:16:41,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1911270421, now seen corresponding path program 1 times [2022-11-21 09:16:41,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:16:41,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222553499] [2022-11-21 09:16:41,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:16:41,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:16:41,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:43,297 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-21 09:16:43,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:16:43,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222553499] [2022-11-21 09:16:43,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222553499] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 09:16:43,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878605499] [2022-11-21 09:16:43,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:16:43,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:16:43,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f055d59-8e90-49d5-b69f-1859c207e6e8/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:16:43,300 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f055d59-8e90-49d5-b69f-1859c207e6e8/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:16:43,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f055d59-8e90-49d5-b69f-1859c207e6e8/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-21 09:16:43,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:43,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-21 09:16:43,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:16:43,791 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-21 09:16:44,007 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-21 09:16:44,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:16:44,352 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 09:16:44,355 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 16 [2022-11-21 09:16:44,439 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-21 09:16:44,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878605499] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:16:44,440 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 09:16:44,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10, 10] total 22 [2022-11-21 09:16:44,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857594959] [2022-11-21 09:16:44,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 09:16:44,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-21 09:16:44,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:16:44,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-21 09:16:44,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2022-11-21 09:16:44,447 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 207 [2022-11-21 09:16:44,451 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 191 transitions, 600 flow. Second operand has 22 states, 22 states have (on average 122.36363636363636) internal successors, (2692), 22 states have internal predecessors, (2692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:16:44,452 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:16:44,452 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 207 [2022-11-21 09:16:44,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:16:48,841 INFO L130 PetriNetUnfolder]: 5301/10684 cut-off events. [2022-11-21 09:16:48,841 INFO L131 PetriNetUnfolder]: For 12073/12073 co-relation queries the response was YES. [2022-11-21 09:16:48,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28853 conditions, 10684 events. 5301/10684 cut-off events. For 12073/12073 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 87959 event pairs, 1109 based on Foata normal form. 2/10083 useless extension candidates. Maximal degree in co-relation 28833. Up to 3397 conditions per place. [2022-11-21 09:16:48,972 INFO L137 encePairwiseOnDemand]: 187/207 looper letters, 272 selfloop transitions, 77 changer transitions 8/461 dead transitions. [2022-11-21 09:16:48,972 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 461 transitions, 2481 flow [2022-11-21 09:16:48,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-21 09:16:48,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-11-21 09:16:48,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3620 transitions. [2022-11-21 09:16:48,981 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6245686680469289 [2022-11-21 09:16:48,986 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3620 transitions. [2022-11-21 09:16:48,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3620 transitions. [2022-11-21 09:16:48,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:16:48,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3620 transitions. [2022-11-21 09:16:48,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 129.28571428571428) internal successors, (3620), 28 states have internal predecessors, (3620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:16:49,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 207.0) internal successors, (6003), 29 states have internal predecessors, (6003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:16:49,014 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 207.0) internal successors, (6003), 29 states have internal predecessors, (6003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:16:49,014 INFO L175 Difference]: Start difference. First operand has 211 places, 191 transitions, 600 flow. Second operand 28 states and 3620 transitions. [2022-11-21 09:16:49,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 461 transitions, 2481 flow [2022-11-21 09:16:49,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 461 transitions, 2448 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-21 09:16:49,048 INFO L231 Difference]: Finished difference. Result has 246 places, 260 transitions, 1251 flow [2022-11-21 09:16:49,049 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=583, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1251, PETRI_PLACES=246, PETRI_TRANSITIONS=260} [2022-11-21 09:16:49,049 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, 66 predicate places. [2022-11-21 09:16:49,050 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 260 transitions, 1251 flow [2022-11-21 09:16:49,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 122.36363636363636) internal successors, (2692), 22 states have internal predecessors, (2692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:16:49,051 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:16:49,051 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:16:49,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f055d59-8e90-49d5-b69f-1859c207e6e8/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-21 09:16:49,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f055d59-8e90-49d5-b69f-1859c207e6e8/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-21 09:16:49,260 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-21 09:16:49,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:16:49,260 INFO L85 PathProgramCache]: Analyzing trace with hash 344882515, now seen corresponding path program 2 times [2022-11-21 09:16:49,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:16:49,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067070114] [2022-11-21 09:16:49,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:16:49,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:16:49,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:51,696 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-21 09:16:51,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:16:51,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067070114] [2022-11-21 09:16:51,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067070114] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 09:16:51,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943293165] [2022-11-21 09:16:51,697 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 09:16:51,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:16:51,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f055d59-8e90-49d5-b69f-1859c207e6e8/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:16:51,698 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f055d59-8e90-49d5-b69f-1859c207e6e8/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:16:51,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f055d59-8e90-49d5-b69f-1859c207e6e8/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-21 09:16:51,928 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 09:16:51,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 09:16:51,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 84 conjunts are in the unsatisfiable core [2022-11-21 09:16:51,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:16:52,554 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-21 09:16:52,898 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-21 09:16:52,964 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-21 09:16:53,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 09:16:53,413 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-21 09:16:53,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 09:16:53,533 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-21 09:16:53,657 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-21 09:16:53,837 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:16:53,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:16:54,137 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~X_0~0.offset 4 (* 4 c_~i_3~0)))) (and (forall ((v_ArrVal_386 (Array Int Int))) (< (+ (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork3_~#t3~0.base| v_ArrVal_386) c_~X_0~0.base) .cse0) c_~s_2~0) (+ c_~s_6~0 1))) (forall ((v_ArrVal_386 (Array Int Int))) (<= c_~s_6~0 (+ (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork3_~#t3~0.base| v_ArrVal_386) c_~X_0~0.base) .cse0) c_~s_2~0))))) is different from false [2022-11-21 09:16:54,202 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~X_0~0.offset 4 (* 4 c_~i_3~0)))) (and (forall ((v_ArrVal_386 (Array Int Int)) (v_ArrVal_385 (Array Int Int))) (<= c_~s_6~0 (+ (select (select (store (store |c_#memory_int| |c_thread1Thread1of1ForFork3_~#t2~0.base| v_ArrVal_385) |c_thread1Thread1of1ForFork3_~#t3~0.base| v_ArrVal_386) c_~X_0~0.base) .cse0) c_~s_2~0))) (forall ((v_ArrVal_386 (Array Int Int)) (v_ArrVal_385 (Array Int Int))) (< (+ (select (select (store (store |c_#memory_int| |c_thread1Thread1of1ForFork3_~#t2~0.base| v_ArrVal_385) |c_thread1Thread1of1ForFork3_~#t3~0.base| v_ArrVal_386) c_~X_0~0.base) .cse0) c_~s_2~0) (+ c_~s_6~0 1))))) is different from false [2022-11-21 09:16:54,237 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~X_0~0.offset 4))) (and (forall ((v_ArrVal_386 (Array Int Int)) (v_ArrVal_385 (Array Int Int))) (<= c_~s_6~0 (select (select (store (store |c_#memory_int| |c_thread1Thread1of1ForFork3_~#t2~0.base| v_ArrVal_385) |c_thread1Thread1of1ForFork3_~#t3~0.base| v_ArrVal_386) c_~X_0~0.base) .cse0))) (forall ((v_ArrVal_386 (Array Int Int)) (v_ArrVal_385 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_thread1Thread1of1ForFork3_~#t2~0.base| v_ArrVal_385) |c_thread1Thread1of1ForFork3_~#t3~0.base| v_ArrVal_386) c_~X_0~0.base) .cse0) (+ c_~s_6~0 1))))) is different from false [2022-11-21 09:16:54,282 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~X_0~0.offset 4))) (and (forall ((v_ArrVal_386 (Array Int Int)) (v_ArrVal_385 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_thread1Thread1of1ForFork3_~#t2~0.base| v_ArrVal_385) |c_thread1Thread1of1ForFork3_~#t3~0.base| v_ArrVal_386) c_~X_0~0.base) .cse0) (+ c_~s_6~0 c_~t_8~0 1))) (forall ((v_ArrVal_386 (Array Int Int)) (v_ArrVal_385 (Array Int Int))) (<= (+ c_~s_6~0 c_~t_8~0) (select (select (store (store |c_#memory_int| |c_thread1Thread1of1ForFork3_~#t2~0.base| v_ArrVal_385) |c_thread1Thread1of1ForFork3_~#t3~0.base| v_ArrVal_386) c_~X_0~0.base) .cse0))))) is different from false [2022-11-21 09:16:54,298 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (select (select |c_#memory_int| c_~X_0~0.base) (+ c_~X_0~0.offset 4 (* 4 c_~i_7~0)))) (.cse0 (+ c_~X_0~0.offset 4))) (and (forall ((v_ArrVal_386 (Array Int Int)) (v_ArrVal_385 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_thread1Thread1of1ForFork3_~#t2~0.base| v_ArrVal_385) |c_thread1Thread1of1ForFork3_~#t3~0.base| v_ArrVal_386) c_~X_0~0.base) .cse0) (+ c_~s_6~0 .cse1 1))) (forall ((v_ArrVal_386 (Array Int Int)) (v_ArrVal_385 (Array Int Int))) (<= (+ c_~s_6~0 .cse1) (select (select (store (store |c_#memory_int| |c_thread1Thread1of1ForFork3_~#t2~0.base| v_ArrVal_385) |c_thread1Thread1of1ForFork3_~#t3~0.base| v_ArrVal_386) c_~X_0~0.base) .cse0))))) is different from false [2022-11-21 09:16:54,335 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~X_0~0.offset 4))) (let ((.cse1 (select (select |c_#memory_int| c_~X_0~0.base) .cse0))) (and (forall ((v_ArrVal_386 (Array Int Int)) (v_ArrVal_385 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_thread1Thread1of1ForFork3_~#t2~0.base| v_ArrVal_385) |c_thread1Thread1of1ForFork3_~#t3~0.base| v_ArrVal_386) c_~X_0~0.base) .cse0) (+ .cse1 1))) (forall ((v_ArrVal_386 (Array Int Int)) (v_ArrVal_385 (Array Int Int))) (<= .cse1 (select (select (store (store |c_#memory_int| |c_thread1Thread1of1ForFork3_~#t2~0.base| v_ArrVal_385) |c_thread1Thread1of1ForFork3_~#t3~0.base| v_ArrVal_386) c_~X_0~0.base) .cse0)))))) is different from false [2022-11-21 09:16:54,370 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~X_0~0.offset 4))) (let ((.cse1 (select (select |c_#memory_int| c_~X_0~0.base) .cse0))) (and (forall ((|v_thread1Thread1of1ForFork3_~#t3~0.base_27| Int)) (or (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork3_~#t3~0.base_27|)) (forall ((v_ArrVal_386 (Array Int Int)) (v_ArrVal_385 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_thread1Thread1of1ForFork3_~#t2~0.base| v_ArrVal_385) |v_thread1Thread1of1ForFork3_~#t3~0.base_27| v_ArrVal_386) c_~X_0~0.base) .cse0) (+ .cse1 1))))) (forall ((|v_thread1Thread1of1ForFork3_~#t3~0.base_27| Int)) (or (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork3_~#t3~0.base_27|)) (forall ((v_ArrVal_386 (Array Int Int)) (v_ArrVal_385 (Array Int Int))) (<= .cse1 (select (select (store (store |c_#memory_int| |c_thread1Thread1of1ForFork3_~#t2~0.base| v_ArrVal_385) |v_thread1Thread1of1ForFork3_~#t3~0.base_27| v_ArrVal_386) c_~X_0~0.base) .cse0)))))))) is different from false [2022-11-21 09:17:19,921 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 09:17:19,922 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 48 [2022-11-21 09:17:19,934 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2838 treesize of output 2622 [2022-11-21 09:17:20,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2574 treesize of output 2318 [2022-11-21 09:17:20,127 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2318 treesize of output 2174 [2022-11-21 09:17:20,155 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2174 treesize of output 1918 [2022-11-21 09:17:20,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1918 treesize of output 1790 [2022-11-21 09:18:07,614 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-21 09:18:07,614 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 1 [2022-11-21 09:18:16,154 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-21 09:18:16,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943293165] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:18:16,155 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 09:18:16,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 29, 29] total 66 [2022-11-21 09:18:16,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416905238] [2022-11-21 09:18:16,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 09:18:16,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-11-21 09:18:16,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:18:16,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-11-21 09:18:16,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=291, Invalid=3125, Unknown=34, NotChecked=840, Total=4290 [2022-11-21 09:18:16,164 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 207 [2022-11-21 09:18:16,171 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 260 transitions, 1251 flow. Second operand has 66 states, 66 states have (on average 100.74242424242425) internal successors, (6649), 66 states have internal predecessors, (6649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:18:16,171 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:18:16,171 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 207 [2022-11-21 09:18:16,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:18:35,750 INFO L130 PetriNetUnfolder]: 19971/39599 cut-off events. [2022-11-21 09:18:35,750 INFO L131 PetriNetUnfolder]: For 108569/108806 co-relation queries the response was YES. [2022-11-21 09:18:36,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131099 conditions, 39599 events. 19971/39599 cut-off events. For 108569/108806 co-relation queries the response was YES. Maximal size of possible extension queue 1825. Compared 396829 event pairs, 2709 based on Foata normal form. 137/37318 useless extension candidates. Maximal degree in co-relation 131063. Up to 4985 conditions per place. [2022-11-21 09:18:36,390 INFO L137 encePairwiseOnDemand]: 164/207 looper letters, 801 selfloop transitions, 268 changer transitions 10/1161 dead transitions. [2022-11-21 09:18:36,391 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 1161 transitions, 9164 flow [2022-11-21 09:18:36,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-11-21 09:18:36,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2022-11-21 09:18:36,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 6611 transitions. [2022-11-21 09:18:36,407 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.523560624059555 [2022-11-21 09:18:36,407 INFO L72 ComplementDD]: Start complementDD. Operand 61 states and 6611 transitions. [2022-11-21 09:18:36,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 6611 transitions. [2022-11-21 09:18:36,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:18:36,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 61 states and 6611 transitions. [2022-11-21 09:18:36,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 62 states, 61 states have (on average 108.37704918032787) internal successors, (6611), 61 states have internal predecessors, (6611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:18:36,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 62 states, 62 states have (on average 207.0) internal successors, (12834), 62 states have internal predecessors, (12834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:18:36,454 INFO L81 ComplementDD]: Finished complementDD. Result has 62 states, 62 states have (on average 207.0) internal successors, (12834), 62 states have internal predecessors, (12834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:18:36,454 INFO L175 Difference]: Start difference. First operand has 246 places, 260 transitions, 1251 flow. Second operand 61 states and 6611 transitions. [2022-11-21 09:18:36,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 1161 transitions, 9164 flow [2022-11-21 09:18:37,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 1161 transitions, 8924 flow, removed 86 selfloop flow, removed 11 redundant places. [2022-11-21 09:18:37,332 INFO L231 Difference]: Finished difference. Result has 328 places, 517 transitions, 4395 flow [2022-11-21 09:18:37,333 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=1192, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=61, PETRI_FLOW=4395, PETRI_PLACES=328, PETRI_TRANSITIONS=517} [2022-11-21 09:18:37,333 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, 148 predicate places. [2022-11-21 09:18:37,334 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 517 transitions, 4395 flow [2022-11-21 09:18:37,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 100.74242424242425) internal successors, (6649), 66 states have internal predecessors, (6649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:18:37,336 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:18:37,336 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:18:37,346 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f055d59-8e90-49d5-b69f-1859c207e6e8/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-21 09:18:37,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f055d59-8e90-49d5-b69f-1859c207e6e8/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:18:37,544 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-21 09:18:37,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:18:37,544 INFO L85 PathProgramCache]: Analyzing trace with hash 232562282, now seen corresponding path program 1 times [2022-11-21 09:18:37,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:18:37,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058234614] [2022-11-21 09:18:37,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:18:37,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:18:37,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:18:39,551 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-21 09:18:39,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:18:39,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058234614] [2022-11-21 09:18:39,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058234614] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 09:18:39,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054858791] [2022-11-21 09:18:39,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:18:39,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:18:39,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f055d59-8e90-49d5-b69f-1859c207e6e8/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:18:39,553 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f055d59-8e90-49d5-b69f-1859c207e6e8/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:18:39,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f055d59-8e90-49d5-b69f-1859c207e6e8/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-21 09:18:39,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:18:39,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 64 conjunts are in the unsatisfiable core [2022-11-21 09:18:39,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:18:40,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 09:18:40,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-21 09:18:40,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-21 09:18:40,574 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 09:18:40,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:18:40,857 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_435 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork3_~#t3~0.base| v_ArrVal_435) c_~X_0~0.base) (+ c_~X_0~0.offset 4)) c_~s_2~0)) is different from false [2022-11-21 09:18:40,878 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_435 (Array Int Int))) (= (+ c_~t_4~0 c_~s_2~0) (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork3_~#t3~0.base| v_ArrVal_435) c_~X_0~0.base) (+ c_~X_0~0.offset 4)))) is different from false [2022-11-21 09:18:40,889 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 09:18:40,890 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 34 [2022-11-21 09:18:40,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-21 09:18:41,255 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 1 not checked. [2022-11-21 09:18:41,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054858791] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:18:41,256 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 09:18:41,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 17] total 42 [2022-11-21 09:18:41,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144278830] [2022-11-21 09:18:41,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 09:18:41,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-21 09:18:41,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:18:41,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-21 09:18:41,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1435, Unknown=2, NotChecked=154, Total=1722 [2022-11-21 09:18:41,264 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 207 [2022-11-21 09:18:41,267 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 517 transitions, 4395 flow. Second operand has 42 states, 42 states have (on average 108.54761904761905) internal successors, (4559), 42 states have internal predecessors, (4559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:18:41,267 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:18:41,267 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 207 [2022-11-21 09:18:41,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:19:01,088 INFO L130 PetriNetUnfolder]: 27309/54181 cut-off events. [2022-11-21 09:19:01,088 INFO L131 PetriNetUnfolder]: For 391674/392721 co-relation queries the response was YES. [2022-11-21 09:19:01,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269137 conditions, 54181 events. 27309/54181 cut-off events. For 391674/392721 co-relation queries the response was YES. Maximal size of possible extension queue 2591. Compared 570756 event pairs, 2229 based on Foata normal form. 608/51514 useless extension candidates. Maximal degree in co-relation 269068. Up to 21528 conditions per place. [2022-11-21 09:19:02,350 INFO L137 encePairwiseOnDemand]: 175/207 looper letters, 556 selfloop transitions, 376 changer transitions 5/1039 dead transitions. [2022-11-21 09:19:02,350 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 1039 transitions, 11834 flow [2022-11-21 09:19:02,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-21 09:19:02,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-21 09:19:02,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 4136 transitions. [2022-11-21 09:19:02,363 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5550187869028449 [2022-11-21 09:19:02,363 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 4136 transitions. [2022-11-21 09:19:02,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 4136 transitions. [2022-11-21 09:19:02,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:19:02,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 4136 transitions. [2022-11-21 09:19:02,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 114.88888888888889) internal successors, (4136), 36 states have internal predecessors, (4136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:19:02,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 207.0) internal successors, (7659), 37 states have internal predecessors, (7659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:19:02,392 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 207.0) internal successors, (7659), 37 states have internal predecessors, (7659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:19:02,393 INFO L175 Difference]: Start difference. First operand has 328 places, 517 transitions, 4395 flow. Second operand 36 states and 4136 transitions. [2022-11-21 09:19:02,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 1039 transitions, 11834 flow [2022-11-21 09:19:10,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 1039 transitions, 11327 flow, removed 238 selfloop flow, removed 17 redundant places. [2022-11-21 09:19:10,110 INFO L231 Difference]: Finished difference. Result has 360 places, 701 transitions, 7926 flow [2022-11-21 09:19:10,111 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=4160, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=517, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=217, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=7926, PETRI_PLACES=360, PETRI_TRANSITIONS=701} [2022-11-21 09:19:10,116 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, 180 predicate places. [2022-11-21 09:19:10,117 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 701 transitions, 7926 flow [2022-11-21 09:19:10,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 108.54761904761905) internal successors, (4559), 42 states have internal predecessors, (4559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:19:10,118 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:19:10,118 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:19:10,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f055d59-8e90-49d5-b69f-1859c207e6e8/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-21 09:19:10,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f055d59-8e90-49d5-b69f-1859c207e6e8/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:19:10,319 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-21 09:19:10,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:19:10,319 INFO L85 PathProgramCache]: Analyzing trace with hash -433191321, now seen corresponding path program 1 times [2022-11-21 09:19:10,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:19:10,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908873891] [2022-11-21 09:19:10,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:19:10,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:19:10,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:11,456 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-21 09:19:11,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:19:11,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908873891] [2022-11-21 09:19:11,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908873891] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 09:19:11,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609038114] [2022-11-21 09:19:11,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:19:11,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:19:11,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f055d59-8e90-49d5-b69f-1859c207e6e8/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:19:11,458 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f055d59-8e90-49d5-b69f-1859c207e6e8/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:19:11,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f055d59-8e90-49d5-b69f-1859c207e6e8/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-21 09:19:11,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:11,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 57 conjunts are in the unsatisfiable core [2022-11-21 09:19:11,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:19:11,971 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-21 09:19:12,068 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 09:19:12,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:19:12,348 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 09:19:12,348 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 16 [2022-11-21 09:19:12,431 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-21 09:19:12,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609038114] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:19:12,431 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 09:19:12,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 10] total 25 [2022-11-21 09:19:12,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110012554] [2022-11-21 09:19:12,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 09:19:12,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-21 09:19:12,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:19:12,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-21 09:19:12,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2022-11-21 09:19:12,437 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 207 [2022-11-21 09:19:12,440 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 701 transitions, 7926 flow. Second operand has 25 states, 25 states have (on average 116.8) internal successors, (2920), 25 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:19:12,441 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:19:12,441 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 207 [2022-11-21 09:19:12,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand