./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-barrier.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc2f55f-3fd5-425b-a574-0b0be3cf1b38/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc2f55f-3fd5-425b-a574-0b0be3cf1b38/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc2f55f-3fd5-425b-a574-0b0be3cf1b38/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc2f55f-3fd5-425b-a574-0b0be3cf1b38/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-barrier.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc2f55f-3fd5-425b-a574-0b0be3cf1b38/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc2f55f-3fd5-425b-a574-0b0be3cf1b38/bin/uautomizer-tPACEb0tL8 --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 22b51332425cd14048935a20a73abea0065b1633fac56d6d6be511ab67585236 --- 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-e04fb08 [2022-11-16 10:54:20,860 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 10:54:20,862 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 10:54:20,892 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 10:54:20,892 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 10:54:20,895 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 10:54:20,898 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 10:54:20,905 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 10:54:20,907 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 10:54:20,913 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 10:54:20,913 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 10:54:20,914 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 10:54:20,915 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 10:54:20,918 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 10:54:20,919 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 10:54:20,922 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 10:54:20,924 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 10:54:20,924 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 10:54:20,926 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 10:54:20,932 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 10:54:20,933 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 10:54:20,940 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 10:54:20,941 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 10:54:20,943 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 10:54:20,947 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 10:54:20,951 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 10:54:20,952 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 10:54:20,953 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 10:54:20,955 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 10:54:20,956 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 10:54:20,957 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 10:54:20,958 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 10:54:20,959 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 10:54:20,961 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 10:54:20,962 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 10:54:20,963 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 10:54:20,964 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 10:54:20,965 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 10:54:20,965 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 10:54:20,966 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 10:54:20,966 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 10:54:20,967 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc2f55f-3fd5-425b-a574-0b0be3cf1b38/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 10:54:21,013 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 10:54:21,014 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 10:54:21,015 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 10:54:21,015 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 10:54:21,016 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 10:54:21,017 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 10:54:21,017 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 10:54:21,018 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 10:54:21,018 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 10:54:21,018 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 10:54:21,019 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 10:54:21,019 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 10:54:21,020 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 10:54:21,020 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 10:54:21,020 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 10:54:21,020 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 10:54:21,021 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 10:54:21,021 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 10:54:21,021 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 10:54:21,021 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 10:54:21,022 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 10:54:21,022 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 10:54:21,022 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 10:54:21,022 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 10:54:21,023 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 10:54:21,023 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 10:54:21,025 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 10:54:21,025 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 10:54:21,025 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 10:54:21,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 10:54:21,026 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 10:54:21,026 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 10:54:21,027 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 10:54:21,027 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_5fc2f55f-3fd5-425b-a574-0b0be3cf1b38/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc2f55f-3fd5-425b-a574-0b0be3cf1b38/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22b51332425cd14048935a20a73abea0065b1633fac56d6d6be511ab67585236 [2022-11-16 10:54:21,322 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 10:54:21,346 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 10:54:21,348 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 10:54:21,350 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 10:54:21,351 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 10:54:21,352 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc2f55f-3fd5-425b-a574-0b0be3cf1b38/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/parallel-barrier.wvr.c [2022-11-16 10:54:21,422 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc2f55f-3fd5-425b-a574-0b0be3cf1b38/bin/uautomizer-tPACEb0tL8/data/4627cba98/4303ae6e0c5d4f169a918dd5927bd850/FLAG575333770 [2022-11-16 10:54:21,872 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 10:54:21,873 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc2f55f-3fd5-425b-a574-0b0be3cf1b38/sv-benchmarks/c/weaver/parallel-barrier.wvr.c [2022-11-16 10:54:21,880 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc2f55f-3fd5-425b-a574-0b0be3cf1b38/bin/uautomizer-tPACEb0tL8/data/4627cba98/4303ae6e0c5d4f169a918dd5927bd850/FLAG575333770 [2022-11-16 10:54:22,258 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc2f55f-3fd5-425b-a574-0b0be3cf1b38/bin/uautomizer-tPACEb0tL8/data/4627cba98/4303ae6e0c5d4f169a918dd5927bd850 [2022-11-16 10:54:22,260 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 10:54:22,262 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 10:54:22,263 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 10:54:22,263 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 10:54:22,267 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 10:54:22,268 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:54:22" (1/1) ... [2022-11-16 10:54:22,269 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14211b61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:22, skipping insertion in model container [2022-11-16 10:54:22,269 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:54:22" (1/1) ... [2022-11-16 10:54:22,277 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 10:54:22,318 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 10:54:22,534 WARN L229 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_5fc2f55f-3fd5-425b-a574-0b0be3cf1b38/sv-benchmarks/c/weaver/parallel-barrier.wvr.c[4722,4735] [2022-11-16 10:54:22,538 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 10:54:22,547 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 10:54:22,579 WARN L229 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_5fc2f55f-3fd5-425b-a574-0b0be3cf1b38/sv-benchmarks/c/weaver/parallel-barrier.wvr.c[4722,4735] [2022-11-16 10:54:22,580 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 10:54:22,596 INFO L208 MainTranslator]: Completed translation [2022-11-16 10:54:22,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:22 WrapperNode [2022-11-16 10:54:22,597 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 10:54:22,597 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 10:54:22,597 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 10:54:22,598 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 10:54:22,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:22" (1/1) ... [2022-11-16 10:54:22,622 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:22" (1/1) ... [2022-11-16 10:54:22,653 INFO L138 Inliner]: procedures = 25, calls = 98, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 253 [2022-11-16 10:54:22,653 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 10:54:22,654 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 10:54:22,654 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 10:54:22,654 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 10:54:22,661 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:22" (1/1) ... [2022-11-16 10:54:22,662 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:22" (1/1) ... [2022-11-16 10:54:22,665 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:22" (1/1) ... [2022-11-16 10:54:22,666 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:22" (1/1) ... [2022-11-16 10:54:22,673 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:22" (1/1) ... [2022-11-16 10:54:22,675 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:22" (1/1) ... [2022-11-16 10:54:22,677 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:22" (1/1) ... [2022-11-16 10:54:22,678 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:22" (1/1) ... [2022-11-16 10:54:22,681 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 10:54:22,682 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 10:54:22,682 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 10:54:22,682 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 10:54:22,683 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:22" (1/1) ... [2022-11-16 10:54:22,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 10:54:22,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc2f55f-3fd5-425b-a574-0b0be3cf1b38/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:54:22,715 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc2f55f-3fd5-425b-a574-0b0be3cf1b38/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 10:54:22,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc2f55f-3fd5-425b-a574-0b0be3cf1b38/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 10:54:22,769 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 10:54:22,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 10:54:22,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 10:54:22,771 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 10:54:22,771 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 10:54:22,771 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 10:54:22,772 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 10:54:22,778 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 10:54:22,778 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 10:54:22,778 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 10:54:22,778 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-16 10:54:22,779 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-16 10:54:22,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 10:54:22,779 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-11-16 10:54:22,779 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-11-16 10:54:22,779 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-11-16 10:54:22,780 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-11-16 10:54:22,780 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 10:54:22,780 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 10:54:22,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 10:54:22,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 10:54:22,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 10:54:22,782 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 10:54:22,891 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 10:54:22,893 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 10:54:23,250 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 10:54:23,382 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 10:54:23,382 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 10:54:23,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 10:54:23 BoogieIcfgContainer [2022-11-16 10:54:23,385 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 10:54:23,403 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 10:54:23,403 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 10:54:23,407 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 10:54:23,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 10:54:22" (1/3) ... [2022-11-16 10:54:23,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4be01902 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:54:23, skipping insertion in model container [2022-11-16 10:54:23,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:22" (2/3) ... [2022-11-16 10:54:23,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4be01902 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:54:23, skipping insertion in model container [2022-11-16 10:54:23,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 10:54:23" (3/3) ... [2022-11-16 10:54:23,415 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-barrier.wvr.c [2022-11-16 10:54:23,425 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 10:54:23,436 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 10:54:23,436 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 10:54:23,436 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 10:54:23,634 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2022-11-16 10:54:23,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 246 places, 235 transitions, 542 flow [2022-11-16 10:54:23,857 INFO L130 PetriNetUnfolder]: 8/207 cut-off events. [2022-11-16 10:54:23,857 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-16 10:54:23,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236 conditions, 207 events. 8/207 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 238 event pairs, 0 based on Foata normal form. 0/198 useless extension candidates. Maximal degree in co-relation 177. Up to 3 conditions per place. [2022-11-16 10:54:23,869 INFO L82 GeneralOperation]: Start removeDead. Operand has 246 places, 235 transitions, 542 flow [2022-11-16 10:54:23,886 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 209 places, 198 transitions, 444 flow [2022-11-16 10:54:23,904 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 10:54:23,914 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;@2ece16f9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 10:54:23,914 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-11-16 10:54:24,020 INFO L130 PetriNetUnfolder]: 8/197 cut-off events. [2022-11-16 10:54:24,021 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-16 10:54:24,021 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:24,022 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:24,022 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-16 10:54:24,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:24,028 INFO L85 PathProgramCache]: Analyzing trace with hash 2113144844, now seen corresponding path program 1 times [2022-11-16 10:54:24,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:24,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704628777] [2022-11-16 10:54:24,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:24,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:24,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:25,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:25,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:25,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704628777] [2022-11-16 10:54:25,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704628777] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:25,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:25,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 10:54:25,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858748883] [2022-11-16 10:54:25,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:25,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 10:54:25,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:25,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 10:54:25,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 10:54:25,361 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 239 [2022-11-16 10:54:25,371 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 198 transitions, 444 flow. Second operand has 5 states, 5 states have (on average 202.6) internal successors, (1013), 5 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:25,372 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:25,372 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 239 [2022-11-16 10:54:25,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:25,962 INFO L130 PetriNetUnfolder]: 300/1160 cut-off events. [2022-11-16 10:54:25,962 INFO L131 PetriNetUnfolder]: For 372/372 co-relation queries the response was YES. [2022-11-16 10:54:25,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1986 conditions, 1160 events. 300/1160 cut-off events. For 372/372 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 6494 event pairs, 155 based on Foata normal form. 50/1092 useless extension candidates. Maximal degree in co-relation 1761. Up to 289 conditions per place. [2022-11-16 10:54:25,981 INFO L137 encePairwiseOnDemand]: 228/239 looper letters, 48 selfloop transitions, 6 changer transitions 3/221 dead transitions. [2022-11-16 10:54:25,982 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 221 transitions, 663 flow [2022-11-16 10:54:25,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 10:54:25,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 10:54:26,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1053 transitions. [2022-11-16 10:54:26,006 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8811715481171548 [2022-11-16 10:54:26,007 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1053 transitions. [2022-11-16 10:54:26,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1053 transitions. [2022-11-16 10:54:26,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:26,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1053 transitions. [2022-11-16 10:54:26,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 210.6) internal successors, (1053), 5 states have internal predecessors, (1053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:26,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:26,036 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:26,038 INFO L175 Difference]: Start difference. First operand has 209 places, 198 transitions, 444 flow. Second operand 5 states and 1053 transitions. [2022-11-16 10:54:26,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 221 transitions, 663 flow [2022-11-16 10:54:26,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 221 transitions, 589 flow, removed 0 selfloop flow, removed 12 redundant places. [2022-11-16 10:54:26,054 INFO L231 Difference]: Finished difference. Result has 202 places, 191 transitions, 416 flow [2022-11-16 10:54:26,057 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=416, PETRI_PLACES=202, PETRI_TRANSITIONS=191} [2022-11-16 10:54:26,061 INFO L288 CegarLoopForPetriNet]: 209 programPoint places, -7 predicate places. [2022-11-16 10:54:26,062 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 191 transitions, 416 flow [2022-11-16 10:54:26,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 202.6) internal successors, (1013), 5 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:26,063 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:26,064 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:26,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 10:54:26,065 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-16 10:54:26,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:26,066 INFO L85 PathProgramCache]: Analyzing trace with hash -310643362, now seen corresponding path program 2 times [2022-11-16 10:54:26,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:26,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565672497] [2022-11-16 10:54:26,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:26,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:26,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:26,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:26,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:26,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565672497] [2022-11-16 10:54:26,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565672497] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:26,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:26,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 10:54:26,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664339118] [2022-11-16 10:54:26,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:26,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 10:54:26,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:26,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 10:54:26,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 10:54:26,688 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 239 [2022-11-16 10:54:26,691 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 191 transitions, 416 flow. Second operand has 5 states, 5 states have (on average 202.6) internal successors, (1013), 5 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:26,691 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:26,692 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 239 [2022-11-16 10:54:26,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:27,073 INFO L130 PetriNetUnfolder]: 264/1094 cut-off events. [2022-11-16 10:54:27,074 INFO L131 PetriNetUnfolder]: For 121/121 co-relation queries the response was YES. [2022-11-16 10:54:27,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1639 conditions, 1094 events. 264/1094 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 6033 event pairs, 107 based on Foata normal form. 20/1002 useless extension candidates. Maximal degree in co-relation 1236. Up to 258 conditions per place. [2022-11-16 10:54:27,083 INFO L137 encePairwiseOnDemand]: 232/239 looper letters, 48 selfloop transitions, 6 changer transitions 1/218 dead transitions. [2022-11-16 10:54:27,083 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 218 transitions, 607 flow [2022-11-16 10:54:27,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 10:54:27,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 10:54:27,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1046 transitions. [2022-11-16 10:54:27,086 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8753138075313808 [2022-11-16 10:54:27,086 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1046 transitions. [2022-11-16 10:54:27,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1046 transitions. [2022-11-16 10:54:27,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:27,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1046 transitions. [2022-11-16 10:54:27,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 209.2) internal successors, (1046), 5 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:27,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:27,094 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:27,094 INFO L175 Difference]: Start difference. First operand has 202 places, 191 transitions, 416 flow. Second operand 5 states and 1046 transitions. [2022-11-16 10:54:27,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 218 transitions, 607 flow [2022-11-16 10:54:27,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 218 transitions, 595 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 10:54:27,101 INFO L231 Difference]: Finished difference. Result has 200 places, 190 transitions, 420 flow [2022-11-16 10:54:27,102 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=420, PETRI_PLACES=200, PETRI_TRANSITIONS=190} [2022-11-16 10:54:27,103 INFO L288 CegarLoopForPetriNet]: 209 programPoint places, -9 predicate places. [2022-11-16 10:54:27,103 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 190 transitions, 420 flow [2022-11-16 10:54:27,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 202.6) internal successors, (1013), 5 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:27,104 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:27,104 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:27,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 10:54:27,105 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-16 10:54:27,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:27,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1575453765, now seen corresponding path program 1 times [2022-11-16 10:54:27,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:27,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43609631] [2022-11-16 10:54:27,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:27,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:27,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:27,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:27,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:27,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43609631] [2022-11-16 10:54:27,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43609631] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:27,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:27,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 10:54:27,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214552340] [2022-11-16 10:54:27,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:27,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 10:54:27,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:27,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 10:54:27,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 10:54:27,551 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 239 [2022-11-16 10:54:27,553 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 190 transitions, 420 flow. Second operand has 5 states, 5 states have (on average 202.6) internal successors, (1013), 5 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:27,553 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:27,553 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 239 [2022-11-16 10:54:27,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:27,950 INFO L130 PetriNetUnfolder]: 274/1085 cut-off events. [2022-11-16 10:54:27,950 INFO L131 PetriNetUnfolder]: For 147/147 co-relation queries the response was YES. [2022-11-16 10:54:27,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1675 conditions, 1085 events. 274/1085 cut-off events. For 147/147 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 6109 event pairs, 120 based on Foata normal form. 10/1011 useless extension candidates. Maximal degree in co-relation 1269. Up to 292 conditions per place. [2022-11-16 10:54:27,960 INFO L137 encePairwiseOnDemand]: 232/239 looper letters, 49 selfloop transitions, 6 changer transitions 0/218 dead transitions. [2022-11-16 10:54:27,960 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 218 transitions, 614 flow [2022-11-16 10:54:27,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 10:54:27,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 10:54:27,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1046 transitions. [2022-11-16 10:54:27,964 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8753138075313808 [2022-11-16 10:54:27,964 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1046 transitions. [2022-11-16 10:54:27,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1046 transitions. [2022-11-16 10:54:27,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:27,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1046 transitions. [2022-11-16 10:54:27,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 209.2) internal successors, (1046), 5 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:27,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:27,972 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:27,972 INFO L175 Difference]: Start difference. First operand has 200 places, 190 transitions, 420 flow. Second operand 5 states and 1046 transitions. [2022-11-16 10:54:27,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 218 transitions, 614 flow [2022-11-16 10:54:27,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 218 transitions, 602 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 10:54:27,978 INFO L231 Difference]: Finished difference. Result has 200 places, 190 transitions, 426 flow [2022-11-16 10:54:27,978 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=426, PETRI_PLACES=200, PETRI_TRANSITIONS=190} [2022-11-16 10:54:27,979 INFO L288 CegarLoopForPetriNet]: 209 programPoint places, -9 predicate places. [2022-11-16 10:54:27,979 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 190 transitions, 426 flow [2022-11-16 10:54:27,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 202.6) internal successors, (1013), 5 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:27,980 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:27,981 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:27,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 10:54:27,981 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-16 10:54:27,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:27,982 INFO L85 PathProgramCache]: Analyzing trace with hash -106266993, now seen corresponding path program 2 times [2022-11-16 10:54:27,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:27,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570027389] [2022-11-16 10:54:27,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:27,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:28,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:30,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:30,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:30,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570027389] [2022-11-16 10:54:30,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570027389] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:30,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:30,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-11-16 10:54:30,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989240261] [2022-11-16 10:54:30,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:30,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-16 10:54:30,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:30,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-16 10:54:30,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=717, Unknown=0, NotChecked=0, Total=812 [2022-11-16 10:54:30,307 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 239 [2022-11-16 10:54:30,313 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 190 transitions, 426 flow. Second operand has 29 states, 29 states have (on average 157.17241379310346) internal successors, (4558), 29 states have internal predecessors, (4558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:30,314 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:30,314 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 239 [2022-11-16 10:54:30,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:36,704 INFO L130 PetriNetUnfolder]: 5453/10826 cut-off events. [2022-11-16 10:54:36,704 INFO L131 PetriNetUnfolder]: For 1996/1996 co-relation queries the response was YES. [2022-11-16 10:54:36,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20522 conditions, 10826 events. 5453/10826 cut-off events. For 1996/1996 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 80538 event pairs, 775 based on Foata normal form. 1/10227 useless extension candidates. Maximal degree in co-relation 19491. Up to 3881 conditions per place. [2022-11-16 10:54:36,801 INFO L137 encePairwiseOnDemand]: 210/239 looper letters, 315 selfloop transitions, 129 changer transitions 23/590 dead transitions. [2022-11-16 10:54:36,803 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 590 transitions, 2423 flow [2022-11-16 10:54:36,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-16 10:54:36,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2022-11-16 10:54:36,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 7753 transitions. [2022-11-16 10:54:36,823 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6901985222113416 [2022-11-16 10:54:36,823 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 7753 transitions. [2022-11-16 10:54:36,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 7753 transitions. [2022-11-16 10:54:36,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:36,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 7753 transitions. [2022-11-16 10:54:36,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 164.95744680851064) internal successors, (7753), 47 states have internal predecessors, (7753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:36,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 239.0) internal successors, (11472), 48 states have internal predecessors, (11472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:36,876 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 239.0) internal successors, (11472), 48 states have internal predecessors, (11472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:36,877 INFO L175 Difference]: Start difference. First operand has 200 places, 190 transitions, 426 flow. Second operand 47 states and 7753 transitions. [2022-11-16 10:54:36,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 590 transitions, 2423 flow [2022-11-16 10:54:36,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 590 transitions, 2343 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 10:54:36,896 INFO L231 Difference]: Finished difference. Result has 273 places, 323 transitions, 1175 flow [2022-11-16 10:54:36,897 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=1175, PETRI_PLACES=273, PETRI_TRANSITIONS=323} [2022-11-16 10:54:36,898 INFO L288 CegarLoopForPetriNet]: 209 programPoint places, 64 predicate places. [2022-11-16 10:54:36,899 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 323 transitions, 1175 flow [2022-11-16 10:54:36,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 157.17241379310346) internal successors, (4558), 29 states have internal predecessors, (4558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:36,901 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:36,902 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:36,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 10:54:36,902 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-16 10:54:36,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:36,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1459608115, now seen corresponding path program 3 times [2022-11-16 10:54:36,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:36,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002662166] [2022-11-16 10:54:36,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:36,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:37,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:38,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:38,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:38,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002662166] [2022-11-16 10:54:38,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002662166] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:38,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:38,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-11-16 10:54:38,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540036676] [2022-11-16 10:54:38,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:38,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-16 10:54:38,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:38,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-16 10:54:38,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=501, Unknown=0, NotChecked=0, Total=552 [2022-11-16 10:54:38,535 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 239 [2022-11-16 10:54:38,539 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 323 transitions, 1175 flow. Second operand has 24 states, 24 states have (on average 165.375) internal successors, (3969), 24 states have internal predecessors, (3969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:38,540 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:38,540 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 239 [2022-11-16 10:54:38,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:45,787 INFO L130 PetriNetUnfolder]: 6889/13044 cut-off events. [2022-11-16 10:54:45,788 INFO L131 PetriNetUnfolder]: For 16008/16010 co-relation queries the response was YES. [2022-11-16 10:54:45,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35850 conditions, 13044 events. 6889/13044 cut-off events. For 16008/16010 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 98452 event pairs, 1526 based on Foata normal form. 1/12165 useless extension candidates. Maximal degree in co-relation 35798. Up to 5192 conditions per place. [2022-11-16 10:54:45,929 INFO L137 encePairwiseOnDemand]: 216/239 looper letters, 408 selfloop transitions, 174 changer transitions 20/737 dead transitions. [2022-11-16 10:54:45,929 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 737 transitions, 4176 flow [2022-11-16 10:54:45,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-11-16 10:54:45,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2022-11-16 10:54:45,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 8935 transitions. [2022-11-16 10:54:45,947 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.718941100740264 [2022-11-16 10:54:45,947 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 8935 transitions. [2022-11-16 10:54:45,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 8935 transitions. [2022-11-16 10:54:45,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:45,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 8935 transitions. [2022-11-16 10:54:45,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 171.82692307692307) internal successors, (8935), 52 states have internal predecessors, (8935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:45,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 239.0) internal successors, (12667), 53 states have internal predecessors, (12667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:45,995 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 239.0) internal successors, (12667), 53 states have internal predecessors, (12667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:45,995 INFO L175 Difference]: Start difference. First operand has 273 places, 323 transitions, 1175 flow. Second operand 52 states and 8935 transitions. [2022-11-16 10:54:45,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 737 transitions, 4176 flow [2022-11-16 10:54:46,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 737 transitions, 4150 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-16 10:54:46,071 INFO L231 Difference]: Finished difference. Result has 341 places, 475 transitions, 2584 flow [2022-11-16 10:54:46,072 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=1165, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=2584, PETRI_PLACES=341, PETRI_TRANSITIONS=475} [2022-11-16 10:54:46,074 INFO L288 CegarLoopForPetriNet]: 209 programPoint places, 132 predicate places. [2022-11-16 10:54:46,074 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 475 transitions, 2584 flow [2022-11-16 10:54:46,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 165.375) internal successors, (3969), 24 states have internal predecessors, (3969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:46,076 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:46,077 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:46,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 10:54:46,077 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-16 10:54:46,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:46,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1613649291, now seen corresponding path program 4 times [2022-11-16 10:54:46,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:46,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559020305] [2022-11-16 10:54:46,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:46,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:46,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:46,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:46,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:46,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559020305] [2022-11-16 10:54:46,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559020305] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:46,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:46,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 10:54:46,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358559767] [2022-11-16 10:54:46,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:46,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 10:54:46,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:46,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 10:54:46,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 10:54:46,534 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 239 [2022-11-16 10:54:46,535 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 475 transitions, 2584 flow. Second operand has 5 states, 5 states have (on average 202.6) internal successors, (1013), 5 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:46,535 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:46,536 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 239 [2022-11-16 10:54:46,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:48,377 INFO L130 PetriNetUnfolder]: 2285/6409 cut-off events. [2022-11-16 10:54:48,378 INFO L131 PetriNetUnfolder]: For 13936/14274 co-relation queries the response was YES. [2022-11-16 10:54:48,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17301 conditions, 6409 events. 2285/6409 cut-off events. For 13936/14274 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 55652 event pairs, 824 based on Foata normal form. 111/5871 useless extension candidates. Maximal degree in co-relation 17228. Up to 1712 conditions per place. [2022-11-16 10:54:48,472 INFO L137 encePairwiseOnDemand]: 232/239 looper letters, 49 selfloop transitions, 9 changer transitions 0/502 dead transitions. [2022-11-16 10:54:48,472 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 502 transitions, 2784 flow [2022-11-16 10:54:48,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 10:54:48,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 10:54:48,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1046 transitions. [2022-11-16 10:54:48,475 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8753138075313808 [2022-11-16 10:54:48,475 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1046 transitions. [2022-11-16 10:54:48,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1046 transitions. [2022-11-16 10:54:48,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:48,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1046 transitions. [2022-11-16 10:54:48,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 209.2) internal successors, (1046), 5 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:48,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:48,481 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:48,481 INFO L175 Difference]: Start difference. First operand has 341 places, 475 transitions, 2584 flow. Second operand 5 states and 1046 transitions. [2022-11-16 10:54:48,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 502 transitions, 2784 flow [2022-11-16 10:54:48,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 502 transitions, 2448 flow, removed 156 selfloop flow, removed 7 redundant places. [2022-11-16 10:54:48,721 INFO L231 Difference]: Finished difference. Result has 335 places, 474 transitions, 2267 flow [2022-11-16 10:54:48,722 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=2242, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2267, PETRI_PLACES=335, PETRI_TRANSITIONS=474} [2022-11-16 10:54:48,724 INFO L288 CegarLoopForPetriNet]: 209 programPoint places, 126 predicate places. [2022-11-16 10:54:48,724 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 474 transitions, 2267 flow [2022-11-16 10:54:48,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 202.6) internal successors, (1013), 5 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:48,725 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:48,725 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:48,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 10:54:48,726 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-16 10:54:48,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:48,726 INFO L85 PathProgramCache]: Analyzing trace with hash -484304023, now seen corresponding path program 1 times [2022-11-16 10:54:48,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:48,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274252487] [2022-11-16 10:54:48,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:48,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:48,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:50,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:50,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:50,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274252487] [2022-11-16 10:54:50,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274252487] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:50,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:50,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-11-16 10:54:50,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191735942] [2022-11-16 10:54:50,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:50,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-16 10:54:50,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:50,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-16 10:54:50,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=754, Unknown=0, NotChecked=0, Total=870 [2022-11-16 10:54:50,908 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 239 [2022-11-16 10:54:50,913 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 474 transitions, 2267 flow. Second operand has 30 states, 30 states have (on average 157.1) internal successors, (4713), 30 states have internal predecessors, (4713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:50,914 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:50,914 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 239 [2022-11-16 10:54:50,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:58,099 INFO L130 PetriNetUnfolder]: 7788/14899 cut-off events. [2022-11-16 10:54:58,099 INFO L131 PetriNetUnfolder]: For 37941/37941 co-relation queries the response was YES. [2022-11-16 10:54:58,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48404 conditions, 14899 events. 7788/14899 cut-off events. For 37941/37941 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 114770 event pairs, 2012 based on Foata normal form. 1/13841 useless extension candidates. Maximal degree in co-relation 47244. Up to 6943 conditions per place. [2022-11-16 10:54:58,300 INFO L137 encePairwiseOnDemand]: 210/239 looper letters, 486 selfloop transitions, 227 changer transitions 23/859 dead transitions. [2022-11-16 10:54:58,301 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 859 transitions, 6104 flow [2022-11-16 10:54:58,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-16 10:54:58,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2022-11-16 10:54:58,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 7877 transitions. [2022-11-16 10:54:58,314 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6866283124128313 [2022-11-16 10:54:58,314 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 7877 transitions. [2022-11-16 10:54:58,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 7877 transitions. [2022-11-16 10:54:58,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:58,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 7877 transitions. [2022-11-16 10:54:58,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 164.10416666666666) internal successors, (7877), 48 states have internal predecessors, (7877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:58,348 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 239.0) internal successors, (11711), 49 states have internal predecessors, (11711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:58,352 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 239.0) internal successors, (11711), 49 states have internal predecessors, (11711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:58,352 INFO L175 Difference]: Start difference. First operand has 335 places, 474 transitions, 2267 flow. Second operand 48 states and 7877 transitions. [2022-11-16 10:54:58,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 859 transitions, 6104 flow [2022-11-16 10:54:58,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 859 transitions, 6064 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 10:54:58,589 INFO L231 Difference]: Finished difference. Result has 404 places, 623 transitions, 4097 flow [2022-11-16 10:54:58,590 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=2249, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=4097, PETRI_PLACES=404, PETRI_TRANSITIONS=623} [2022-11-16 10:54:58,591 INFO L288 CegarLoopForPetriNet]: 209 programPoint places, 195 predicate places. [2022-11-16 10:54:58,591 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 623 transitions, 4097 flow [2022-11-16 10:54:58,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 157.1) internal successors, (4713), 30 states have internal predecessors, (4713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:58,593 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:58,593 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:58,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 10:54:58,594 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-16 10:54:58,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:58,594 INFO L85 PathProgramCache]: Analyzing trace with hash 502588187, now seen corresponding path program 2 times [2022-11-16 10:54:58,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:58,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616899409] [2022-11-16 10:54:58,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:58,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:58,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:59,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:59,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:59,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616899409] [2022-11-16 10:54:59,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616899409] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:59,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:55:00,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-11-16 10:55:00,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364034838] [2022-11-16 10:55:00,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:55:00,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-16 10:55:00,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:55:00,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-16 10:55:00,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=493, Unknown=0, NotChecked=0, Total=552 [2022-11-16 10:55:00,004 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 239 [2022-11-16 10:55:00,008 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 623 transitions, 4097 flow. Second operand has 24 states, 24 states have (on average 165.375) internal successors, (3969), 24 states have internal predecessors, (3969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:00,008 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:55:00,008 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 239 [2022-11-16 10:55:00,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:55:07,217 INFO L130 PetriNetUnfolder]: 7871/15243 cut-off events. [2022-11-16 10:55:07,217 INFO L131 PetriNetUnfolder]: For 63340/63374 co-relation queries the response was YES. [2022-11-16 10:55:07,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55221 conditions, 15243 events. 7871/15243 cut-off events. For 63340/63374 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 120986 event pairs, 1788 based on Foata normal form. 6/14103 useless extension candidates. Maximal degree in co-relation 55112. Up to 7103 conditions per place. [2022-11-16 10:55:07,624 INFO L137 encePairwiseOnDemand]: 216/239 looper letters, 583 selfloop transitions, 289 changer transitions 20/1031 dead transitions. [2022-11-16 10:55:07,624 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 1031 transitions, 8786 flow [2022-11-16 10:55:07,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-16 10:55:07,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2022-11-16 10:55:07,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 8599 transitions. [2022-11-16 10:55:07,641 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.719581589958159 [2022-11-16 10:55:07,641 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 8599 transitions. [2022-11-16 10:55:07,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 8599 transitions. [2022-11-16 10:55:07,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:55:07,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 8599 transitions. [2022-11-16 10:55:07,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 171.98) internal successors, (8599), 50 states have internal predecessors, (8599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:07,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 239.0) internal successors, (12189), 51 states have internal predecessors, (12189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:07,689 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 239.0) internal successors, (12189), 51 states have internal predecessors, (12189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:07,689 INFO L175 Difference]: Start difference. First operand has 404 places, 623 transitions, 4097 flow. Second operand 50 states and 8599 transitions. [2022-11-16 10:55:07,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 1031 transitions, 8786 flow [2022-11-16 10:55:08,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 1031 transitions, 8232 flow, removed 275 selfloop flow, removed 5 redundant places. [2022-11-16 10:55:08,251 INFO L231 Difference]: Finished difference. Result has 462 places, 766 transitions, 5844 flow [2022-11-16 10:55:08,252 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=3677, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=623, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=5844, PETRI_PLACES=462, PETRI_TRANSITIONS=766} [2022-11-16 10:55:08,252 INFO L288 CegarLoopForPetriNet]: 209 programPoint places, 253 predicate places. [2022-11-16 10:55:08,252 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 766 transitions, 5844 flow [2022-11-16 10:55:08,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 165.375) internal successors, (3969), 24 states have internal predecessors, (3969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:08,254 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:55:08,254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:55:08,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 10:55:08,254 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-16 10:55:08,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:08,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1898893893, now seen corresponding path program 3 times [2022-11-16 10:55:08,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:55:08,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417199922] [2022-11-16 10:55:08,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:08,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:55:08,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:09,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:55:09,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:55:09,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417199922] [2022-11-16 10:55:09,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417199922] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:55:09,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:55:09,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-11-16 10:55:09,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713949904] [2022-11-16 10:55:09,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:55:09,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-16 10:55:09,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:55:09,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-16 10:55:09,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=494, Unknown=0, NotChecked=0, Total=552 [2022-11-16 10:55:09,859 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 239 [2022-11-16 10:55:09,864 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 766 transitions, 5844 flow. Second operand has 24 states, 24 states have (on average 165.375) internal successors, (3969), 24 states have internal predecessors, (3969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:09,864 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:55:09,864 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 239 [2022-11-16 10:55:09,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:55:17,043 INFO L130 PetriNetUnfolder]: 8380/16466 cut-off events. [2022-11-16 10:55:17,043 INFO L131 PetriNetUnfolder]: For 90838/90876 co-relation queries the response was YES. [2022-11-16 10:55:17,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62774 conditions, 16466 events. 8380/16466 cut-off events. For 90838/90876 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 134680 event pairs, 1704 based on Foata normal form. 10/15174 useless extension candidates. Maximal degree in co-relation 62644. Up to 7450 conditions per place. [2022-11-16 10:55:17,309 INFO L137 encePairwiseOnDemand]: 216/239 looper letters, 524 selfloop transitions, 328 changer transitions 15/1006 dead transitions. [2022-11-16 10:55:17,309 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 1006 transitions, 9290 flow [2022-11-16 10:55:17,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-16 10:55:17,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-16 10:55:17,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 5209 transitions. [2022-11-16 10:55:17,319 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7264993026499302 [2022-11-16 10:55:17,319 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 5209 transitions. [2022-11-16 10:55:17,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 5209 transitions. [2022-11-16 10:55:17,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:55:17,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 5209 transitions. [2022-11-16 10:55:17,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 173.63333333333333) internal successors, (5209), 30 states have internal predecessors, (5209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:17,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 239.0) internal successors, (7409), 31 states have internal predecessors, (7409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:17,342 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 239.0) internal successors, (7409), 31 states have internal predecessors, (7409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:17,342 INFO L175 Difference]: Start difference. First operand has 462 places, 766 transitions, 5844 flow. Second operand 30 states and 5209 transitions. [2022-11-16 10:55:17,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 1006 transitions, 9290 flow [2022-11-16 10:55:17,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 481 places, 1006 transitions, 8713 flow, removed 270 selfloop flow, removed 6 redundant places. [2022-11-16 10:55:17,928 INFO L231 Difference]: Finished difference. Result has 492 places, 819 transitions, 6656 flow [2022-11-16 10:55:17,929 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=5278, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=766, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=283, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=6656, PETRI_PLACES=492, PETRI_TRANSITIONS=819} [2022-11-16 10:55:17,930 INFO L288 CegarLoopForPetriNet]: 209 programPoint places, 283 predicate places. [2022-11-16 10:55:17,930 INFO L495 AbstractCegarLoop]: Abstraction has has 492 places, 819 transitions, 6656 flow [2022-11-16 10:55:17,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 165.375) internal successors, (3969), 24 states have internal predecessors, (3969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:17,931 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:55:17,931 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:55:17,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 10:55:17,931 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-16 10:55:17,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:17,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1617534097, now seen corresponding path program 4 times [2022-11-16 10:55:17,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:55:17,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946367599] [2022-11-16 10:55:17,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:17,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:55:18,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:19,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:55:19,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:55:19,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946367599] [2022-11-16 10:55:19,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946367599] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:55:19,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:55:19,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-11-16 10:55:19,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264606078] [2022-11-16 10:55:19,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:55:19,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-16 10:55:19,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:55:19,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-16 10:55:19,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=503, Unknown=0, NotChecked=0, Total=552 [2022-11-16 10:55:19,406 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 239 [2022-11-16 10:55:19,409 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 819 transitions, 6656 flow. Second operand has 24 states, 24 states have (on average 165.375) internal successors, (3969), 24 states have internal predecessors, (3969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:19,409 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:55:19,409 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 239 [2022-11-16 10:55:19,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:55:28,742 INFO L130 PetriNetUnfolder]: 9103/17734 cut-off events. [2022-11-16 10:55:28,742 INFO L131 PetriNetUnfolder]: For 121729/121759 co-relation queries the response was YES. [2022-11-16 10:55:28,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71445 conditions, 17734 events. 9103/17734 cut-off events. For 121729/121759 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 145114 event pairs, 2620 based on Foata normal form. 7/16226 useless extension candidates. Maximal degree in co-relation 71297. Up to 7778 conditions per place. [2022-11-16 10:55:29,105 INFO L137 encePairwiseOnDemand]: 216/239 looper letters, 689 selfloop transitions, 410 changer transitions 20/1258 dead transitions. [2022-11-16 10:55:29,105 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 538 places, 1258 transitions, 13170 flow [2022-11-16 10:55:29,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-16 10:55:29,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2022-11-16 10:55:29,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 8534 transitions. [2022-11-16 10:55:29,118 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7141422594142259 [2022-11-16 10:55:29,119 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 8534 transitions. [2022-11-16 10:55:29,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 8534 transitions. [2022-11-16 10:55:29,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:55:29,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 8534 transitions. [2022-11-16 10:55:29,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 170.68) internal successors, (8534), 50 states have internal predecessors, (8534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:29,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 239.0) internal successors, (12189), 51 states have internal predecessors, (12189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:29,150 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 239.0) internal successors, (12189), 51 states have internal predecessors, (12189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:29,150 INFO L175 Difference]: Start difference. First operand has 492 places, 819 transitions, 6656 flow. Second operand 50 states and 8534 transitions. [2022-11-16 10:55:29,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 538 places, 1258 transitions, 13170 flow [2022-11-16 10:55:30,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 1258 transitions, 12537 flow, removed 180 selfloop flow, removed 10 redundant places. [2022-11-16 10:55:30,051 INFO L231 Difference]: Finished difference. Result has 546 places, 1041 transitions, 10059 flow [2022-11-16 10:55:30,053 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=6219, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=819, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=202, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=535, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=10059, PETRI_PLACES=546, PETRI_TRANSITIONS=1041} [2022-11-16 10:55:30,053 INFO L288 CegarLoopForPetriNet]: 209 programPoint places, 337 predicate places. [2022-11-16 10:55:30,054 INFO L495 AbstractCegarLoop]: Abstraction has has 546 places, 1041 transitions, 10059 flow [2022-11-16 10:55:30,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 165.375) internal successors, (3969), 24 states have internal predecessors, (3969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:30,054 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:55:30,055 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:55:30,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 10:55:30,055 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-16 10:55:30,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:30,056 INFO L85 PathProgramCache]: Analyzing trace with hash 441768683, now seen corresponding path program 5 times [2022-11-16 10:55:30,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:55:30,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797541836] [2022-11-16 10:55:30,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:30,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:55:30,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:31,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:55:31,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:55:31,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797541836] [2022-11-16 10:55:31,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797541836] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:55:31,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:55:31,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-11-16 10:55:31,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712496578] [2022-11-16 10:55:31,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:55:31,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-16 10:55:31,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:55:31,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-16 10:55:31,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=494, Unknown=0, NotChecked=0, Total=552 [2022-11-16 10:55:31,444 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 239 [2022-11-16 10:55:31,446 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 546 places, 1041 transitions, 10059 flow. Second operand has 24 states, 24 states have (on average 165.375) internal successors, (3969), 24 states have internal predecessors, (3969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:31,446 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:55:31,446 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 239 [2022-11-16 10:55:31,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:55:41,078 INFO L130 PetriNetUnfolder]: 9686/19003 cut-off events. [2022-11-16 10:55:41,078 INFO L131 PetriNetUnfolder]: For 142614/142665 co-relation queries the response was YES. [2022-11-16 10:55:41,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79583 conditions, 19003 events. 9686/19003 cut-off events. For 142614/142665 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 159351 event pairs, 2054 based on Foata normal form. 11/17361 useless extension candidates. Maximal degree in co-relation 79414. Up to 8562 conditions per place. [2022-11-16 10:55:41,507 INFO L137 encePairwiseOnDemand]: 216/239 looper letters, 655 selfloop transitions, 543 changer transitions 15/1352 dead transitions. [2022-11-16 10:55:41,507 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 582 places, 1352 transitions, 14823 flow [2022-11-16 10:55:41,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-16 10:55:41,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-11-16 10:55:41,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 7086 transitions. [2022-11-16 10:55:41,516 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.723135013776916 [2022-11-16 10:55:41,516 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 7086 transitions. [2022-11-16 10:55:41,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 7086 transitions. [2022-11-16 10:55:41,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:55:41,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 7086 transitions. [2022-11-16 10:55:41,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 172.82926829268294) internal successors, (7086), 41 states have internal predecessors, (7086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:41,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 239.0) internal successors, (10038), 42 states have internal predecessors, (10038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:41,539 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 239.0) internal successors, (10038), 42 states have internal predecessors, (10038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:41,540 INFO L175 Difference]: Start difference. First operand has 546 places, 1041 transitions, 10059 flow. Second operand 41 states and 7086 transitions. [2022-11-16 10:55:41,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 582 places, 1352 transitions, 14823 flow [2022-11-16 10:55:42,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 577 places, 1352 transitions, 14253 flow, removed 283 selfloop flow, removed 5 redundant places. [2022-11-16 10:55:42,572 INFO L231 Difference]: Finished difference. Result has 586 places, 1112 transitions, 11753 flow [2022-11-16 10:55:42,573 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=9515, PETRI_DIFFERENCE_MINUEND_PLACES=537, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1041, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=479, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=558, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=11753, PETRI_PLACES=586, PETRI_TRANSITIONS=1112} [2022-11-16 10:55:42,574 INFO L288 CegarLoopForPetriNet]: 209 programPoint places, 377 predicate places. [2022-11-16 10:55:42,574 INFO L495 AbstractCegarLoop]: Abstraction has has 586 places, 1112 transitions, 11753 flow [2022-11-16 10:55:42,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 165.375) internal successors, (3969), 24 states have internal predecessors, (3969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:42,575 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:55:42,575 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:55:42,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 10:55:42,576 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-16 10:55:42,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:42,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1445000917, now seen corresponding path program 6 times [2022-11-16 10:55:42,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:55:42,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475578403] [2022-11-16 10:55:42,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:42,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:55:42,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:44,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:55:44,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:55:44,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475578403] [2022-11-16 10:55:44,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475578403] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:55:44,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:55:44,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-11-16 10:55:44,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905849663] [2022-11-16 10:55:44,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:55:44,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-16 10:55:44,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:55:44,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-16 10:55:44,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=775, Unknown=0, NotChecked=0, Total=870 [2022-11-16 10:55:44,893 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 239 [2022-11-16 10:55:44,898 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 586 places, 1112 transitions, 11753 flow. Second operand has 30 states, 30 states have (on average 157.1) internal successors, (4713), 30 states have internal predecessors, (4713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:44,898 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:55:44,898 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 239 [2022-11-16 10:55:44,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand