./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-node-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_23d762e4-d4dc-44b3-8a40-7b920c0a1055/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23d762e4-d4dc-44b3-8a40-7b920c0a1055/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23d762e4-d4dc-44b3-8a40-7b920c0a1055/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23d762e4-d4dc-44b3-8a40-7b920c0a1055/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-node-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23d762e4-d4dc-44b3-8a40-7b920c0a1055/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23d762e4-d4dc-44b3-8a40-7b920c0a1055/bin/uautomizer-uyxdKDjOR8 --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 b79c2a620eba99d5ba65b548a8599a4feb45877b2c0c8388713c23f9a60bea18 --- 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-2329fc7 [2022-12-13 13:40:21,006 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 13:40:21,007 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 13:40:21,020 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 13:40:21,021 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 13:40:21,021 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 13:40:21,022 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 13:40:21,023 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 13:40:21,024 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 13:40:21,025 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 13:40:21,026 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 13:40:21,026 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 13:40:21,027 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 13:40:21,027 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 13:40:21,028 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 13:40:21,029 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 13:40:21,030 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 13:40:21,030 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 13:40:21,031 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 13:40:21,033 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 13:40:21,034 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 13:40:21,034 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 13:40:21,035 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 13:40:21,036 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 13:40:21,038 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 13:40:21,039 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 13:40:21,039 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 13:40:21,039 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 13:40:21,040 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 13:40:21,040 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 13:40:21,041 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 13:40:21,041 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 13:40:21,042 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 13:40:21,042 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 13:40:21,043 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 13:40:21,043 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 13:40:21,044 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 13:40:21,044 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 13:40:21,044 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 13:40:21,045 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 13:40:21,045 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 13:40:21,046 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23d762e4-d4dc-44b3-8a40-7b920c0a1055/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 13:40:21,060 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 13:40:21,061 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 13:40:21,061 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 13:40:21,061 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 13:40:21,061 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 13:40:21,061 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 13:40:21,062 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 13:40:21,062 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 13:40:21,062 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 13:40:21,062 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 13:40:21,062 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 13:40:21,063 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 13:40:21,063 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 13:40:21,063 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 13:40:21,063 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 13:40:21,063 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 13:40:21,063 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 13:40:21,063 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 13:40:21,063 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 13:40:21,063 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 13:40:21,064 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 13:40:21,064 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 13:40:21,064 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 13:40:21,064 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 13:40:21,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:40:21,064 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 13:40:21,064 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 13:40:21,064 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 13:40:21,065 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 13:40:21,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 13:40:21,065 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 13:40:21,065 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 13:40:21,065 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 13:40:21,065 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 13:40:21,065 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 13:40:21,065 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23d762e4-d4dc-44b3-8a40-7b920c0a1055/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23d762e4-d4dc-44b3-8a40-7b920c0a1055/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b79c2a620eba99d5ba65b548a8599a4feb45877b2c0c8388713c23f9a60bea18 [2022-12-13 13:40:21,249 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 13:40:21,269 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 13:40:21,272 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 13:40:21,273 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 13:40:21,273 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 13:40:21,275 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23d762e4-d4dc-44b3-8a40-7b920c0a1055/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/chl-node-trans.wvr.c [2022-12-13 13:40:23,904 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 13:40:24,032 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 13:40:24,033 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23d762e4-d4dc-44b3-8a40-7b920c0a1055/sv-benchmarks/c/weaver/chl-node-trans.wvr.c [2022-12-13 13:40:24,040 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23d762e4-d4dc-44b3-8a40-7b920c0a1055/bin/uautomizer-uyxdKDjOR8/data/fd45d173c/d88831b6e7be4446b40924974d2e8297/FLAG30214bce7 [2022-12-13 13:40:24,054 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23d762e4-d4dc-44b3-8a40-7b920c0a1055/bin/uautomizer-uyxdKDjOR8/data/fd45d173c/d88831b6e7be4446b40924974d2e8297 [2022-12-13 13:40:24,056 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 13:40:24,058 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 13:40:24,059 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 13:40:24,059 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 13:40:24,063 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 13:40:24,063 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:40:24" (1/1) ... [2022-12-13 13:40:24,064 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@90b4836 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:40:24, skipping insertion in model container [2022-12-13 13:40:24,065 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:40:24" (1/1) ... [2022-12-13 13:40:24,072 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 13:40:24,093 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 13:40:24,232 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23d762e4-d4dc-44b3-8a40-7b920c0a1055/sv-benchmarks/c/weaver/chl-node-trans.wvr.c[3945,3958] [2022-12-13 13:40:24,242 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:40:24,249 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 13:40:24,269 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23d762e4-d4dc-44b3-8a40-7b920c0a1055/sv-benchmarks/c/weaver/chl-node-trans.wvr.c[3945,3958] [2022-12-13 13:40:24,274 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:40:24,284 INFO L208 MainTranslator]: Completed translation [2022-12-13 13:40:24,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:40:24 WrapperNode [2022-12-13 13:40:24,285 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 13:40:24,285 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 13:40:24,285 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 13:40:24,286 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 13:40:24,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:40:24" (1/1) ... [2022-12-13 13:40:24,298 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:40:24" (1/1) ... [2022-12-13 13:40:24,323 INFO L138 Inliner]: procedures = 27, calls = 66, calls flagged for inlining = 22, calls inlined = 34, statements flattened = 413 [2022-12-13 13:40:24,323 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 13:40:24,323 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 13:40:24,324 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 13:40:24,324 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 13:40:24,331 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:40:24" (1/1) ... [2022-12-13 13:40:24,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:40:24" (1/1) ... [2022-12-13 13:40:24,334 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:40:24" (1/1) ... [2022-12-13 13:40:24,334 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:40:24" (1/1) ... [2022-12-13 13:40:24,342 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:40:24" (1/1) ... [2022-12-13 13:40:24,346 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:40:24" (1/1) ... [2022-12-13 13:40:24,348 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:40:24" (1/1) ... [2022-12-13 13:40:24,350 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:40:24" (1/1) ... [2022-12-13 13:40:24,353 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 13:40:24,353 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 13:40:24,353 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 13:40:24,353 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 13:40:24,354 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:40:24" (1/1) ... [2022-12-13 13:40:24,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:40:24,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23d762e4-d4dc-44b3-8a40-7b920c0a1055/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:40:24,378 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23d762e4-d4dc-44b3-8a40-7b920c0a1055/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 13:40:24,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23d762e4-d4dc-44b3-8a40-7b920c0a1055/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 13:40:24,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 13:40:24,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 13:40:24,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 13:40:24,412 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 13:40:24,412 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 13:40:24,412 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 13:40:24,412 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 13:40:24,412 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 13:40:24,412 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 13:40:24,412 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 13:40:24,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 13:40:24,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 13:40:24,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 13:40:24,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 13:40:24,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 13:40:24,415 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 13:40:24,511 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 13:40:24,513 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 13:40:24,954 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 13:40:24,967 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 13:40:24,967 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-12-13 13:40:24,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:40:24 BoogieIcfgContainer [2022-12-13 13:40:24,970 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 13:40:24,972 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 13:40:24,973 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 13:40:24,976 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 13:40:24,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 01:40:24" (1/3) ... [2022-12-13 13:40:24,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a3a6022 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:40:24, skipping insertion in model container [2022-12-13 13:40:24,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:40:24" (2/3) ... [2022-12-13 13:40:24,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a3a6022 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:40:24, skipping insertion in model container [2022-12-13 13:40:24,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:40:24" (3/3) ... [2022-12-13 13:40:24,979 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-trans.wvr.c [2022-12-13 13:40:24,988 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 13:40:24,995 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 13:40:24,996 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 13:40:24,996 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 13:40:25,089 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 13:40:25,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 513 places, 544 transitions, 1112 flow [2022-12-13 13:40:25,304 INFO L130 PetriNetUnfolder]: 41/541 cut-off events. [2022-12-13 13:40:25,304 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 13:40:25,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 554 conditions, 541 events. 41/541 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 691 event pairs, 0 based on Foata normal form. 0/499 useless extension candidates. Maximal degree in co-relation 459. Up to 2 conditions per place. [2022-12-13 13:40:25,313 INFO L82 GeneralOperation]: Start removeDead. Operand has 513 places, 544 transitions, 1112 flow [2022-12-13 13:40:25,322 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 499 places, 530 transitions, 1078 flow [2022-12-13 13:40:25,325 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 13:40:25,334 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 499 places, 530 transitions, 1078 flow [2022-12-13 13:40:25,337 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 499 places, 530 transitions, 1078 flow [2022-12-13 13:40:25,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 499 places, 530 transitions, 1078 flow [2022-12-13 13:40:25,464 INFO L130 PetriNetUnfolder]: 41/530 cut-off events. [2022-12-13 13:40:25,464 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 13:40:25,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 543 conditions, 530 events. 41/530 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 692 event pairs, 0 based on Foata normal form. 0/489 useless extension candidates. Maximal degree in co-relation 459. Up to 2 conditions per place. [2022-12-13 13:40:25,474 INFO L119 LiptonReduction]: Number of co-enabled transitions 21384 [2022-12-13 13:40:39,934 INFO L134 LiptonReduction]: Checked pairs total: 23011 [2022-12-13 13:40:39,934 INFO L136 LiptonReduction]: Total number of compositions: 617 [2022-12-13 13:40:39,944 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 13:40:39,948 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;@17f7096a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 13:40:39,948 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-13 13:40:39,954 INFO L130 PetriNetUnfolder]: 10/41 cut-off events. [2022-12-13 13:40:39,955 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 13:40:39,955 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:40:39,955 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] [2022-12-13 13:40:39,956 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 13:40:39,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:40:39,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1258022810, now seen corresponding path program 1 times [2022-12-13 13:40:39,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:40:39,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034816090] [2022-12-13 13:40:39,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:40:39,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:40:40,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:40:40,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:40:40,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:40:40,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034816090] [2022-12-13 13:40:40,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034816090] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:40:40,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:40:40,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:40:40,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112764612] [2022-12-13 13:40:40,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:40:40,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:40:40,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:40:40,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:40:40,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:40:40,250 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 501 out of 1161 [2022-12-13 13:40:40,254 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 42 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 510.3333333333333) internal successors, (1531), 3 states have internal predecessors, (1531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:40,254 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:40:40,254 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 501 of 1161 [2022-12-13 13:40:40,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:40:40,480 INFO L130 PetriNetUnfolder]: 835/1228 cut-off events. [2022-12-13 13:40:40,481 INFO L131 PetriNetUnfolder]: For 90/90 co-relation queries the response was YES. [2022-12-13 13:40:40,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2608 conditions, 1228 events. 835/1228 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4549 event pairs, 477 based on Foata normal form. 0/1030 useless extension candidates. Maximal degree in co-relation 2392. Up to 913 conditions per place. [2022-12-13 13:40:40,486 INFO L137 encePairwiseOnDemand]: 1157/1161 looper letters, 54 selfloop transitions, 3 changer transitions 0/57 dead transitions. [2022-12-13 13:40:40,486 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 57 transitions, 252 flow [2022-12-13 13:40:40,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:40:40,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:40:40,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1561 transitions. [2022-12-13 13:40:40,507 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4481768590295722 [2022-12-13 13:40:40,508 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1561 transitions. [2022-12-13 13:40:40,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1561 transitions. [2022-12-13 13:40:40,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:40:40,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1561 transitions. [2022-12-13 13:40:40,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 520.3333333333334) internal successors, (1561), 3 states have internal predecessors, (1561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:40,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1161.0) internal successors, (4644), 4 states have internal predecessors, (4644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:40,531 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1161.0) internal successors, (4644), 4 states have internal predecessors, (4644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:40,533 INFO L175 Difference]: Start difference. First operand has 42 places, 42 transitions, 102 flow. Second operand 3 states and 1561 transitions. [2022-12-13 13:40:40,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 57 transitions, 252 flow [2022-12-13 13:40:40,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 57 transitions, 236 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-13 13:40:40,537 INFO L231 Difference]: Finished difference. Result has 40 places, 43 transitions, 108 flow [2022-12-13 13:40:40,539 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1161, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=40, PETRI_TRANSITIONS=43} [2022-12-13 13:40:40,542 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, -2 predicate places. [2022-12-13 13:40:40,542 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 43 transitions, 108 flow [2022-12-13 13:40:40,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 510.3333333333333) internal successors, (1531), 3 states have internal predecessors, (1531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:40,543 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:40:40,543 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] [2022-12-13 13:40:40,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 13:40:40,543 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 13:40:40,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:40:40,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1260649244, now seen corresponding path program 1 times [2022-12-13 13:40:40,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:40:40,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759990902] [2022-12-13 13:40:40,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:40:40,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:40:40,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:40:40,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:40:40,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:40:40,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759990902] [2022-12-13 13:40:40,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759990902] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:40:40,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:40:40,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:40:40,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066804569] [2022-12-13 13:40:40,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:40:40,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:40:40,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:40:40,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:40:40,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:40:40,673 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 501 out of 1161 [2022-12-13 13:40:40,675 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 43 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 510.6666666666667) internal successors, (1532), 3 states have internal predecessors, (1532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:40,675 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:40:40,675 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 501 of 1161 [2022-12-13 13:40:40,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:40:40,903 INFO L130 PetriNetUnfolder]: 943/1388 cut-off events. [2022-12-13 13:40:40,903 INFO L131 PetriNetUnfolder]: For 517/517 co-relation queries the response was YES. [2022-12-13 13:40:40,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3253 conditions, 1388 events. 943/1388 cut-off events. For 517/517 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5055 event pairs, 541 based on Foata normal form. 0/1278 useless extension candidates. Maximal degree in co-relation 1664. Up to 1017 conditions per place. [2022-12-13 13:40:40,908 INFO L137 encePairwiseOnDemand]: 1157/1161 looper letters, 56 selfloop transitions, 3 changer transitions 0/59 dead transitions. [2022-12-13 13:40:40,908 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 59 transitions, 276 flow [2022-12-13 13:40:40,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:40:40,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:40:40,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1561 transitions. [2022-12-13 13:40:40,916 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4481768590295722 [2022-12-13 13:40:40,916 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1561 transitions. [2022-12-13 13:40:40,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1561 transitions. [2022-12-13 13:40:40,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:40:40,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1561 transitions. [2022-12-13 13:40:40,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 520.3333333333334) internal successors, (1561), 3 states have internal predecessors, (1561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:40,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1161.0) internal successors, (4644), 4 states have internal predecessors, (4644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:40,941 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1161.0) internal successors, (4644), 4 states have internal predecessors, (4644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:40,941 INFO L175 Difference]: Start difference. First operand has 40 places, 43 transitions, 108 flow. Second operand 3 states and 1561 transitions. [2022-12-13 13:40:40,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 59 transitions, 276 flow [2022-12-13 13:40:40,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 59 transitions, 264 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 13:40:40,945 INFO L231 Difference]: Finished difference. Result has 42 places, 44 transitions, 120 flow [2022-12-13 13:40:40,945 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1161, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=42, PETRI_TRANSITIONS=44} [2022-12-13 13:40:40,946 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2022-12-13 13:40:40,946 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 44 transitions, 120 flow [2022-12-13 13:40:40,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 510.6666666666667) internal successors, (1532), 3 states have internal predecessors, (1532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:40,948 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:40:40,948 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] [2022-12-13 13:40:40,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 13:40:40,949 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 13:40:40,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:40:40,949 INFO L85 PathProgramCache]: Analyzing trace with hash -451135943, now seen corresponding path program 1 times [2022-12-13 13:40:40,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:40:40,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573506812] [2022-12-13 13:40:40,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:40:40,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:40:40,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:40:41,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:40:41,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:40:41,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573506812] [2022-12-13 13:40:41,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573506812] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:40:41,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:40:41,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 13:40:41,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309155751] [2022-12-13 13:40:41,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:40:41,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:40:41,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:40:41,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:40:41,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:40:41,215 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 496 out of 1161 [2022-12-13 13:40:41,217 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 44 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 506.0) internal successors, (1518), 3 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:41,217 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:40:41,217 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 496 of 1161 [2022-12-13 13:40:41,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:40:41,421 INFO L130 PetriNetUnfolder]: 943/1389 cut-off events. [2022-12-13 13:40:41,421 INFO L131 PetriNetUnfolder]: For 387/387 co-relation queries the response was YES. [2022-12-13 13:40:41,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3522 conditions, 1389 events. 943/1389 cut-off events. For 387/387 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5042 event pairs, 733 based on Foata normal form. 0/1333 useless extension candidates. Maximal degree in co-relation 1959. Up to 1389 conditions per place. [2022-12-13 13:40:41,431 INFO L137 encePairwiseOnDemand]: 1158/1161 looper letters, 43 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2022-12-13 13:40:41,431 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 45 transitions, 212 flow [2022-12-13 13:40:41,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:40:41,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:40:41,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1532 transitions. [2022-12-13 13:40:41,438 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4398507034165949 [2022-12-13 13:40:41,438 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1532 transitions. [2022-12-13 13:40:41,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1532 transitions. [2022-12-13 13:40:41,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:40:41,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1532 transitions. [2022-12-13 13:40:41,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 510.6666666666667) internal successors, (1532), 3 states have internal predecessors, (1532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:41,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1161.0) internal successors, (4644), 4 states have internal predecessors, (4644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:41,461 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1161.0) internal successors, (4644), 4 states have internal predecessors, (4644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:41,462 INFO L175 Difference]: Start difference. First operand has 42 places, 44 transitions, 120 flow. Second operand 3 states and 1532 transitions. [2022-12-13 13:40:41,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 45 transitions, 212 flow [2022-12-13 13:40:41,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 45 transitions, 206 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 13:40:41,469 INFO L231 Difference]: Finished difference. Result has 43 places, 45 transitions, 126 flow [2022-12-13 13:40:41,470 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1161, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=43, PETRI_TRANSITIONS=45} [2022-12-13 13:40:41,470 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2022-12-13 13:40:41,471 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 45 transitions, 126 flow [2022-12-13 13:40:41,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 506.0) internal successors, (1518), 3 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:41,473 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:40:41,473 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] [2022-12-13 13:40:41,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 13:40:41,473 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 13:40:41,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:40:41,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1995423241, now seen corresponding path program 1 times [2022-12-13 13:40:41,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:40:41,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368988182] [2022-12-13 13:40:41,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:40:41,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:40:41,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:40:41,609 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:40:41,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:40:41,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368988182] [2022-12-13 13:40:41,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368988182] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:40:41,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:40:41,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:40:41,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729561610] [2022-12-13 13:40:41,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:40:41,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:40:41,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:40:41,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:40:41,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 13:40:41,687 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 494 out of 1161 [2022-12-13 13:40:41,690 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 45 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 501.75) internal successors, (2007), 4 states have internal predecessors, (2007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:41,690 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:40:41,690 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 494 of 1161 [2022-12-13 13:40:41,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:40:41,932 INFO L130 PetriNetUnfolder]: 943/1390 cut-off events. [2022-12-13 13:40:41,932 INFO L131 PetriNetUnfolder]: For 236/236 co-relation queries the response was YES. [2022-12-13 13:40:41,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3374 conditions, 1390 events. 943/1390 cut-off events. For 236/236 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5044 event pairs, 733 based on Foata normal form. 0/1282 useless extension candidates. Maximal degree in co-relation 3361. Up to 1388 conditions per place. [2022-12-13 13:40:41,937 INFO L137 encePairwiseOnDemand]: 1156/1161 looper letters, 42 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2022-12-13 13:40:41,937 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 46 transitions, 220 flow [2022-12-13 13:40:41,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 13:40:41,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 13:40:41,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2021 transitions. [2022-12-13 13:40:41,940 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4351851851851852 [2022-12-13 13:40:41,941 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2021 transitions. [2022-12-13 13:40:41,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2021 transitions. [2022-12-13 13:40:41,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:40:41,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2021 transitions. [2022-12-13 13:40:41,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 505.25) internal successors, (2021), 4 states have internal predecessors, (2021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:41,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1161.0) internal successors, (5805), 5 states have internal predecessors, (5805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:41,951 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1161.0) internal successors, (5805), 5 states have internal predecessors, (5805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:41,952 INFO L175 Difference]: Start difference. First operand has 43 places, 45 transitions, 126 flow. Second operand 4 states and 2021 transitions. [2022-12-13 13:40:41,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 46 transitions, 220 flow [2022-12-13 13:40:41,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 46 transitions, 216 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 13:40:41,954 INFO L231 Difference]: Finished difference. Result has 46 places, 46 transitions, 140 flow [2022-12-13 13:40:41,954 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1161, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=140, PETRI_PLACES=46, PETRI_TRANSITIONS=46} [2022-12-13 13:40:41,955 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2022-12-13 13:40:41,955 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 46 transitions, 140 flow [2022-12-13 13:40:41,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 501.75) internal successors, (2007), 4 states have internal predecessors, (2007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:41,956 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:40:41,956 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] [2022-12-13 13:40:41,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 13:40:41,956 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 13:40:41,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:40:41,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1305054406, now seen corresponding path program 1 times [2022-12-13 13:40:41,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:40:41,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642330672] [2022-12-13 13:40:41,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:40:41,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:40:41,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:40:42,071 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 13:40:42,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:40:42,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642330672] [2022-12-13 13:40:42,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642330672] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:40:42,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:40:42,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:40:42,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557609662] [2022-12-13 13:40:42,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:40:42,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:40:42,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:40:42,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:40:42,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 13:40:42,139 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 494 out of 1161 [2022-12-13 13:40:42,142 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 46 transitions, 140 flow. Second operand has 4 states, 4 states have (on average 502.0) internal successors, (2008), 4 states have internal predecessors, (2008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:42,142 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:40:42,142 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 494 of 1161 [2022-12-13 13:40:42,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:40:42,388 INFO L130 PetriNetUnfolder]: 943/1391 cut-off events. [2022-12-13 13:40:42,388 INFO L131 PetriNetUnfolder]: For 236/236 co-relation queries the response was YES. [2022-12-13 13:40:42,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3383 conditions, 1391 events. 943/1391 cut-off events. For 236/236 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5044 event pairs, 733 based on Foata normal form. 0/1284 useless extension candidates. Maximal degree in co-relation 3361. Up to 1389 conditions per place. [2022-12-13 13:40:42,393 INFO L137 encePairwiseOnDemand]: 1156/1161 looper letters, 43 selfloop transitions, 4 changer transitions 0/47 dead transitions. [2022-12-13 13:40:42,393 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 47 transitions, 236 flow [2022-12-13 13:40:42,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 13:40:42,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 13:40:42,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2021 transitions. [2022-12-13 13:40:42,401 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4351851851851852 [2022-12-13 13:40:42,401 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2021 transitions. [2022-12-13 13:40:42,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2021 transitions. [2022-12-13 13:40:42,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:40:42,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2021 transitions. [2022-12-13 13:40:42,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 505.25) internal successors, (2021), 4 states have internal predecessors, (2021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:42,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1161.0) internal successors, (5805), 5 states have internal predecessors, (5805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:42,418 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1161.0) internal successors, (5805), 5 states have internal predecessors, (5805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:42,418 INFO L175 Difference]: Start difference. First operand has 46 places, 46 transitions, 140 flow. Second operand 4 states and 2021 transitions. [2022-12-13 13:40:42,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 47 transitions, 236 flow [2022-12-13 13:40:42,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 47 transitions, 235 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 13:40:42,420 INFO L231 Difference]: Finished difference. Result has 49 places, 47 transitions, 157 flow [2022-12-13 13:40:42,420 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1161, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=157, PETRI_PLACES=49, PETRI_TRANSITIONS=47} [2022-12-13 13:40:42,420 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 7 predicate places. [2022-12-13 13:40:42,421 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 47 transitions, 157 flow [2022-12-13 13:40:42,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 502.0) internal successors, (2008), 4 states have internal predecessors, (2008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:42,421 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:40:42,421 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] [2022-12-13 13:40:42,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 13:40:42,422 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 13:40:42,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:40:42,422 INFO L85 PathProgramCache]: Analyzing trace with hash -859244272, now seen corresponding path program 1 times [2022-12-13 13:40:42,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:40:42,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255411356] [2022-12-13 13:40:42,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:40:42,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:40:42,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:40:42,534 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 13:40:42,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:40:42,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255411356] [2022-12-13 13:40:42,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255411356] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:40:42,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:40:42,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:40:42,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440772602] [2022-12-13 13:40:42,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:40:42,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:40:42,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:40:42,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:40:42,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 13:40:42,591 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 494 out of 1161 [2022-12-13 13:40:42,592 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 47 transitions, 157 flow. Second operand has 4 states, 4 states have (on average 502.25) internal successors, (2009), 4 states have internal predecessors, (2009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:42,592 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:40:42,593 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 494 of 1161 [2022-12-13 13:40:42,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:40:42,854 INFO L130 PetriNetUnfolder]: 943/1392 cut-off events. [2022-12-13 13:40:42,854 INFO L131 PetriNetUnfolder]: For 237/237 co-relation queries the response was YES. [2022-12-13 13:40:42,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3394 conditions, 1392 events. 943/1392 cut-off events. For 237/237 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5044 event pairs, 733 based on Foata normal form. 0/1286 useless extension candidates. Maximal degree in co-relation 3368. Up to 1391 conditions per place. [2022-12-13 13:40:42,864 INFO L137 encePairwiseOnDemand]: 1157/1161 looper letters, 45 selfloop transitions, 3 changer transitions 0/48 dead transitions. [2022-12-13 13:40:42,864 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 48 transitions, 255 flow [2022-12-13 13:40:42,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 13:40:42,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 13:40:42,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2020 transitions. [2022-12-13 13:40:42,870 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43496985357450474 [2022-12-13 13:40:42,870 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2020 transitions. [2022-12-13 13:40:42,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2020 transitions. [2022-12-13 13:40:42,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:40:42,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2020 transitions. [2022-12-13 13:40:42,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 505.0) internal successors, (2020), 4 states have internal predecessors, (2020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:42,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1161.0) internal successors, (5805), 5 states have internal predecessors, (5805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:42,884 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1161.0) internal successors, (5805), 5 states have internal predecessors, (5805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:42,885 INFO L175 Difference]: Start difference. First operand has 49 places, 47 transitions, 157 flow. Second operand 4 states and 2020 transitions. [2022-12-13 13:40:42,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 48 transitions, 255 flow [2022-12-13 13:40:42,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 48 transitions, 251 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 13:40:42,888 INFO L231 Difference]: Finished difference. Result has 51 places, 48 transitions, 167 flow [2022-12-13 13:40:42,888 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1161, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=167, PETRI_PLACES=51, PETRI_TRANSITIONS=48} [2022-12-13 13:40:42,888 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 9 predicate places. [2022-12-13 13:40:42,888 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 48 transitions, 167 flow [2022-12-13 13:40:42,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 502.25) internal successors, (2009), 4 states have internal predecessors, (2009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:42,890 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:40:42,890 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] [2022-12-13 13:40:42,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 13:40:42,890 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 13:40:42,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:40:42,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1741998769, now seen corresponding path program 1 times [2022-12-13 13:40:42,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:40:42,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900673918] [2022-12-13 13:40:42,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:40:42,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:40:42,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:40:43,048 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 13:40:43,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:40:43,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900673918] [2022-12-13 13:40:43,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900673918] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:40:43,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:40:43,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:40:43,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580945990] [2022-12-13 13:40:43,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:40:43,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:40:43,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:40:43,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:40:43,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 13:40:43,118 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 494 out of 1161 [2022-12-13 13:40:43,120 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 167 flow. Second operand has 4 states, 4 states have (on average 502.5) internal successors, (2010), 4 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:43,120 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:40:43,120 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 494 of 1161 [2022-12-13 13:40:43,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:40:43,412 INFO L130 PetriNetUnfolder]: 943/1393 cut-off events. [2022-12-13 13:40:43,413 INFO L131 PetriNetUnfolder]: For 237/237 co-relation queries the response was YES. [2022-12-13 13:40:43,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3401 conditions, 1393 events. 943/1393 cut-off events. For 237/237 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5044 event pairs, 733 based on Foata normal form. 0/1288 useless extension candidates. Maximal degree in co-relation 3374. Up to 1392 conditions per place. [2022-12-13 13:40:43,420 INFO L137 encePairwiseOnDemand]: 1157/1161 looper letters, 46 selfloop transitions, 3 changer transitions 0/49 dead transitions. [2022-12-13 13:40:43,420 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 49 transitions, 267 flow [2022-12-13 13:40:43,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 13:40:43,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 13:40:43,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2020 transitions. [2022-12-13 13:40:43,424 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43496985357450474 [2022-12-13 13:40:43,424 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2020 transitions. [2022-12-13 13:40:43,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2020 transitions. [2022-12-13 13:40:43,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:40:43,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2020 transitions. [2022-12-13 13:40:43,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 505.0) internal successors, (2020), 4 states have internal predecessors, (2020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:43,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1161.0) internal successors, (5805), 5 states have internal predecessors, (5805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:43,431 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1161.0) internal successors, (5805), 5 states have internal predecessors, (5805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:43,431 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 167 flow. Second operand 4 states and 2020 transitions. [2022-12-13 13:40:43,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 49 transitions, 267 flow [2022-12-13 13:40:43,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 49 transitions, 261 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-12-13 13:40:43,433 INFO L231 Difference]: Finished difference. Result has 53 places, 49 transitions, 175 flow [2022-12-13 13:40:43,434 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1161, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=175, PETRI_PLACES=53, PETRI_TRANSITIONS=49} [2022-12-13 13:40:43,434 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 11 predicate places. [2022-12-13 13:40:43,434 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 49 transitions, 175 flow [2022-12-13 13:40:43,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 502.5) internal successors, (2010), 4 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:43,435 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:40:43,435 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] [2022-12-13 13:40:43,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 13:40:43,435 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 13:40:43,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:40:43,435 INFO L85 PathProgramCache]: Analyzing trace with hash -665173547, now seen corresponding path program 1 times [2022-12-13 13:40:43,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:40:43,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641735588] [2022-12-13 13:40:43,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:40:43,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:40:43,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:40:43,551 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 13:40:43,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:40:43,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641735588] [2022-12-13 13:40:43,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641735588] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:40:43,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:40:43,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:40:43,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56176684] [2022-12-13 13:40:43,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:40:43,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:40:43,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:40:43,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:40:43,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 13:40:43,629 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 494 out of 1161 [2022-12-13 13:40:43,631 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 49 transitions, 175 flow. Second operand has 4 states, 4 states have (on average 502.75) internal successors, (2011), 4 states have internal predecessors, (2011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:43,631 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:40:43,631 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 494 of 1161 [2022-12-13 13:40:43,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:40:43,848 INFO L130 PetriNetUnfolder]: 943/1394 cut-off events. [2022-12-13 13:40:43,848 INFO L131 PetriNetUnfolder]: For 239/239 co-relation queries the response was YES. [2022-12-13 13:40:43,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3407 conditions, 1394 events. 943/1394 cut-off events. For 239/239 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5044 event pairs, 733 based on Foata normal form. 0/1290 useless extension candidates. Maximal degree in co-relation 3379. Up to 1393 conditions per place. [2022-12-13 13:40:43,854 INFO L137 encePairwiseOnDemand]: 1157/1161 looper letters, 47 selfloop transitions, 3 changer transitions 0/50 dead transitions. [2022-12-13 13:40:43,855 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 50 transitions, 277 flow [2022-12-13 13:40:43,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 13:40:43,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 13:40:43,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2020 transitions. [2022-12-13 13:40:43,858 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43496985357450474 [2022-12-13 13:40:43,858 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2020 transitions. [2022-12-13 13:40:43,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2020 transitions. [2022-12-13 13:40:43,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:40:43,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2020 transitions. [2022-12-13 13:40:43,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 505.0) internal successors, (2020), 4 states have internal predecessors, (2020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:43,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1161.0) internal successors, (5805), 5 states have internal predecessors, (5805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:43,866 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1161.0) internal successors, (5805), 5 states have internal predecessors, (5805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:43,866 INFO L175 Difference]: Start difference. First operand has 53 places, 49 transitions, 175 flow. Second operand 4 states and 2020 transitions. [2022-12-13 13:40:43,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 50 transitions, 277 flow [2022-12-13 13:40:43,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 50 transitions, 271 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-12-13 13:40:43,868 INFO L231 Difference]: Finished difference. Result has 55 places, 50 transitions, 183 flow [2022-12-13 13:40:43,868 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1161, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=183, PETRI_PLACES=55, PETRI_TRANSITIONS=50} [2022-12-13 13:40:43,869 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 13 predicate places. [2022-12-13 13:40:43,869 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 50 transitions, 183 flow [2022-12-13 13:40:43,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 502.75) internal successors, (2011), 4 states have internal predecessors, (2011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:43,869 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:40:43,870 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] [2022-12-13 13:40:43,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 13:40:43,870 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 13:40:43,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:40:43,870 INFO L85 PathProgramCache]: Analyzing trace with hash -756070603, now seen corresponding path program 1 times [2022-12-13 13:40:43,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:40:43,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877997689] [2022-12-13 13:40:43,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:40:43,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:40:44,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:40:45,264 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 13:40:45,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:40:45,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877997689] [2022-12-13 13:40:45,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877997689] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:40:45,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:40:45,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-13 13:40:45,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857269435] [2022-12-13 13:40:45,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:40:45,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 13:40:45,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:40:45,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 13:40:45,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-12-13 13:40:46,800 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 450 out of 1161 [2022-12-13 13:40:46,804 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 50 transitions, 183 flow. Second operand has 15 states, 15 states have (on average 452.4) internal successors, (6786), 15 states have internal predecessors, (6786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:46,805 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:40:46,805 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 450 of 1161 [2022-12-13 13:40:46,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:40:47,824 INFO L130 PetriNetUnfolder]: 1807/2784 cut-off events. [2022-12-13 13:40:47,825 INFO L131 PetriNetUnfolder]: For 557/557 co-relation queries the response was YES. [2022-12-13 13:40:47,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6869 conditions, 2784 events. 1807/2784 cut-off events. For 557/557 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 13310 event pairs, 635 based on Foata normal form. 1/2612 useless extension candidates. Maximal degree in co-relation 6840. Up to 1336 conditions per place. [2022-12-13 13:40:47,836 INFO L137 encePairwiseOnDemand]: 1149/1161 looper letters, 134 selfloop transitions, 14 changer transitions 7/155 dead transitions. [2022-12-13 13:40:47,836 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 155 transitions, 796 flow [2022-12-13 13:40:47,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 13:40:47,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-13 13:40:47,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 5092 transitions. [2022-12-13 13:40:47,842 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3987158405763057 [2022-12-13 13:40:47,842 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 5092 transitions. [2022-12-13 13:40:47,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 5092 transitions. [2022-12-13 13:40:47,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:40:47,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 5092 transitions. [2022-12-13 13:40:47,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 462.90909090909093) internal successors, (5092), 11 states have internal predecessors, (5092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:47,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 1161.0) internal successors, (13932), 12 states have internal predecessors, (13932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:47,889 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 1161.0) internal successors, (13932), 12 states have internal predecessors, (13932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:47,890 INFO L175 Difference]: Start difference. First operand has 55 places, 50 transitions, 183 flow. Second operand 11 states and 5092 transitions. [2022-12-13 13:40:47,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 155 transitions, 796 flow [2022-12-13 13:40:47,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 155 transitions, 790 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-12-13 13:40:47,898 INFO L231 Difference]: Finished difference. Result has 70 places, 62 transitions, 279 flow [2022-12-13 13:40:47,899 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1161, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=279, PETRI_PLACES=70, PETRI_TRANSITIONS=62} [2022-12-13 13:40:47,899 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 28 predicate places. [2022-12-13 13:40:47,899 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 62 transitions, 279 flow [2022-12-13 13:40:47,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 452.4) internal successors, (6786), 15 states have internal predecessors, (6786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:47,902 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:40:47,902 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] [2022-12-13 13:40:47,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 13:40:47,902 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 13:40:47,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:40:47,902 INFO L85 PathProgramCache]: Analyzing trace with hash 865891991, now seen corresponding path program 2 times [2022-12-13 13:40:47,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:40:47,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023427172] [2022-12-13 13:40:47,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:40:47,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:40:48,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:40:48,668 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 13:40:48,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:40:48,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023427172] [2022-12-13 13:40:48,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023427172] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:40:48,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:40:48,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 13:40:48,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878552406] [2022-12-13 13:40:48,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:40:48,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 13:40:48,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:40:48,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 13:40:48,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-12-13 13:40:49,361 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 468 out of 1161 [2022-12-13 13:40:49,364 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 62 transitions, 279 flow. Second operand has 9 states, 9 states have (on average 472.0) internal successors, (4248), 9 states have internal predecessors, (4248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:49,364 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:40:49,364 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 468 of 1161 [2022-12-13 13:40:49,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:40:50,560 INFO L130 PetriNetUnfolder]: 3111/4871 cut-off events. [2022-12-13 13:40:50,560 INFO L131 PetriNetUnfolder]: For 4844/4844 co-relation queries the response was YES. [2022-12-13 13:40:50,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14404 conditions, 4871 events. 3111/4871 cut-off events. For 4844/4844 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 26743 event pairs, 885 based on Foata normal form. 1/4772 useless extension candidates. Maximal degree in co-relation 14368. Up to 1894 conditions per place. [2022-12-13 13:40:50,597 INFO L137 encePairwiseOnDemand]: 1152/1161 looper letters, 137 selfloop transitions, 17 changer transitions 11/165 dead transitions. [2022-12-13 13:40:50,597 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 165 transitions, 1016 flow [2022-12-13 13:40:50,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 13:40:50,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 13:40:50,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 4340 transitions. [2022-12-13 13:40:50,605 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4153507512680639 [2022-12-13 13:40:50,605 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 4340 transitions. [2022-12-13 13:40:50,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 4340 transitions. [2022-12-13 13:40:50,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:40:50,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 4340 transitions. [2022-12-13 13:40:50,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 482.22222222222223) internal successors, (4340), 9 states have internal predecessors, (4340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:50,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1161.0) internal successors, (11610), 10 states have internal predecessors, (11610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:50,624 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1161.0) internal successors, (11610), 10 states have internal predecessors, (11610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:50,624 INFO L175 Difference]: Start difference. First operand has 70 places, 62 transitions, 279 flow. Second operand 9 states and 4340 transitions. [2022-12-13 13:40:50,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 165 transitions, 1016 flow [2022-12-13 13:40:50,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 165 transitions, 1005 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-12-13 13:40:50,657 INFO L231 Difference]: Finished difference. Result has 81 places, 71 transitions, 390 flow [2022-12-13 13:40:50,657 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1161, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=390, PETRI_PLACES=81, PETRI_TRANSITIONS=71} [2022-12-13 13:40:50,658 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 39 predicate places. [2022-12-13 13:40:50,658 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 71 transitions, 390 flow [2022-12-13 13:40:50,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 472.0) internal successors, (4248), 9 states have internal predecessors, (4248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:50,659 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:40:50,659 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] [2022-12-13 13:40:50,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 13:40:50,659 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 13:40:50,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:40:50,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1010691597, now seen corresponding path program 3 times [2022-12-13 13:40:50,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:40:50,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743005695] [2022-12-13 13:40:50,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:40:50,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:40:50,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:40:51,317 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 13:40:51,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:40:51,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743005695] [2022-12-13 13:40:51,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743005695] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:40:51,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:40:51,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 13:40:51,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538321525] [2022-12-13 13:40:51,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:40:51,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 13:40:51,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:40:51,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 13:40:51,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-12-13 13:40:51,888 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 468 out of 1161 [2022-12-13 13:40:51,891 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 71 transitions, 390 flow. Second operand has 9 states, 9 states have (on average 472.0) internal successors, (4248), 9 states have internal predecessors, (4248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:51,891 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:40:51,891 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 468 of 1161 [2022-12-13 13:40:51,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:40:53,280 INFO L130 PetriNetUnfolder]: 4120/6658 cut-off events. [2022-12-13 13:40:53,281 INFO L131 PetriNetUnfolder]: For 12986/12986 co-relation queries the response was YES. [2022-12-13 13:40:53,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22543 conditions, 6658 events. 4120/6658 cut-off events. For 12986/12986 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 40874 event pairs, 1715 based on Foata normal form. 1/6559 useless extension candidates. Maximal degree in co-relation 22502. Up to 4134 conditions per place. [2022-12-13 13:40:53,308 INFO L137 encePairwiseOnDemand]: 1151/1161 looper letters, 146 selfloop transitions, 33 changer transitions 7/186 dead transitions. [2022-12-13 13:40:53,308 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 186 transitions, 1333 flow [2022-12-13 13:40:53,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 13:40:53,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 13:40:53,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 4343 transitions. [2022-12-13 13:40:53,314 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4156378600823045 [2022-12-13 13:40:53,314 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 4343 transitions. [2022-12-13 13:40:53,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 4343 transitions. [2022-12-13 13:40:53,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:40:53,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 4343 transitions. [2022-12-13 13:40:53,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 482.55555555555554) internal successors, (4343), 9 states have internal predecessors, (4343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:53,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1161.0) internal successors, (11610), 10 states have internal predecessors, (11610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:53,325 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1161.0) internal successors, (11610), 10 states have internal predecessors, (11610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:53,325 INFO L175 Difference]: Start difference. First operand has 81 places, 71 transitions, 390 flow. Second operand 9 states and 4343 transitions. [2022-12-13 13:40:53,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 186 transitions, 1333 flow [2022-12-13 13:40:53,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 186 transitions, 1305 flow, removed 14 selfloop flow, removed 3 redundant places. [2022-12-13 13:40:53,364 INFO L231 Difference]: Finished difference. Result has 90 places, 93 transitions, 680 flow [2022-12-13 13:40:53,364 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1161, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=680, PETRI_PLACES=90, PETRI_TRANSITIONS=93} [2022-12-13 13:40:53,364 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 48 predicate places. [2022-12-13 13:40:53,364 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 93 transitions, 680 flow [2022-12-13 13:40:53,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 472.0) internal successors, (4248), 9 states have internal predecessors, (4248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:53,365 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:40:53,365 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] [2022-12-13 13:40:53,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 13:40:53,365 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 13:40:53,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:40:53,365 INFO L85 PathProgramCache]: Analyzing trace with hash -994634299, now seen corresponding path program 1 times [2022-12-13 13:40:53,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:40:53,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999936318] [2022-12-13 13:40:53,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:40:53,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:40:53,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:40:54,187 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 13:40:54,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:40:54,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999936318] [2022-12-13 13:40:54,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999936318] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:40:54,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:40:54,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-13 13:40:54,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908499411] [2022-12-13 13:40:54,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:40:54,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 13:40:54,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:40:54,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 13:40:54,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-12-13 13:40:55,251 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 455 out of 1161 [2022-12-13 13:40:55,253 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 93 transitions, 680 flow. Second operand has 13 states, 13 states have (on average 457.7692307692308) internal successors, (5951), 13 states have internal predecessors, (5951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:55,253 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:40:55,253 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 455 of 1161 [2022-12-13 13:40:55,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:40:57,830 INFO L130 PetriNetUnfolder]: 9931/16146 cut-off events. [2022-12-13 13:40:57,831 INFO L131 PetriNetUnfolder]: For 48280/48280 co-relation queries the response was YES. [2022-12-13 13:40:57,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59021 conditions, 16146 events. 9931/16146 cut-off events. For 48280/48280 co-relation queries the response was YES. Maximal size of possible extension queue 869. Compared 117117 event pairs, 3889 based on Foata normal form. 2/15859 useless extension candidates. Maximal degree in co-relation 58975. Up to 6321 conditions per place. [2022-12-13 13:40:57,894 INFO L137 encePairwiseOnDemand]: 1149/1161 looper letters, 255 selfloop transitions, 17 changer transitions 7/279 dead transitions. [2022-12-13 13:40:57,894 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 279 transitions, 2405 flow [2022-12-13 13:40:57,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 13:40:57,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 13:40:57,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 5616 transitions. [2022-12-13 13:40:57,900 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40310077519379844 [2022-12-13 13:40:57,900 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 5616 transitions. [2022-12-13 13:40:57,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 5616 transitions. [2022-12-13 13:40:57,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:40:57,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 5616 transitions. [2022-12-13 13:40:57,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 468.0) internal successors, (5616), 12 states have internal predecessors, (5616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:57,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 1161.0) internal successors, (15093), 13 states have internal predecessors, (15093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:57,914 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 1161.0) internal successors, (15093), 13 states have internal predecessors, (15093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:57,914 INFO L175 Difference]: Start difference. First operand has 90 places, 93 transitions, 680 flow. Second operand 12 states and 5616 transitions. [2022-12-13 13:40:57,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 279 transitions, 2405 flow [2022-12-13 13:40:58,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 279 transitions, 2329 flow, removed 13 selfloop flow, removed 2 redundant places. [2022-12-13 13:40:58,133 INFO L231 Difference]: Finished difference. Result has 104 places, 102 transitions, 799 flow [2022-12-13 13:40:58,134 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1161, PETRI_DIFFERENCE_MINUEND_FLOW=649, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=799, PETRI_PLACES=104, PETRI_TRANSITIONS=102} [2022-12-13 13:40:58,134 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 62 predicate places. [2022-12-13 13:40:58,134 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 102 transitions, 799 flow [2022-12-13 13:40:58,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 457.7692307692308) internal successors, (5951), 13 states have internal predecessors, (5951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:58,135 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:40:58,135 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] [2022-12-13 13:40:58,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 13:40:58,135 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 13:40:58,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:40:58,135 INFO L85 PathProgramCache]: Analyzing trace with hash -726823625, now seen corresponding path program 4 times [2022-12-13 13:40:58,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:40:58,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719697803] [2022-12-13 13:40:58,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:40:58,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:40:58,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:40:58,627 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 13:40:58,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:40:58,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719697803] [2022-12-13 13:40:58,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719697803] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:40:58,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:40:58,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 13:40:58,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405170326] [2022-12-13 13:40:58,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:40:58,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 13:40:58,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:40:58,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 13:40:58,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-12-13 13:40:59,460 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 468 out of 1161 [2022-12-13 13:40:59,463 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 102 transitions, 799 flow. Second operand has 9 states, 9 states have (on average 472.0) internal successors, (4248), 9 states have internal predecessors, (4248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:59,463 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:40:59,463 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 468 of 1161 [2022-12-13 13:40:59,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:41:02,612 INFO L130 PetriNetUnfolder]: 11243/18685 cut-off events. [2022-12-13 13:41:02,612 INFO L131 PetriNetUnfolder]: For 64692/64692 co-relation queries the response was YES. [2022-12-13 13:41:02,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70726 conditions, 18685 events. 11243/18685 cut-off events. For 64692/64692 co-relation queries the response was YES. Maximal size of possible extension queue 1064. Compared 143599 event pairs, 2358 based on Foata normal form. 3/18687 useless extension candidates. Maximal degree in co-relation 70673. Up to 6392 conditions per place. [2022-12-13 13:41:02,712 INFO L137 encePairwiseOnDemand]: 1152/1161 looper letters, 185 selfloop transitions, 36 changer transitions 11/232 dead transitions. [2022-12-13 13:41:02,712 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 232 transitions, 2027 flow [2022-12-13 13:41:02,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 13:41:02,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 13:41:02,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 4348 transitions. [2022-12-13 13:41:02,718 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4161163747727055 [2022-12-13 13:41:02,718 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 4348 transitions. [2022-12-13 13:41:02,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 4348 transitions. [2022-12-13 13:41:02,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:41:02,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 4348 transitions. [2022-12-13 13:41:02,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 483.1111111111111) internal successors, (4348), 9 states have internal predecessors, (4348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:41:02,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1161.0) internal successors, (11610), 10 states have internal predecessors, (11610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:41:02,733 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1161.0) internal successors, (11610), 10 states have internal predecessors, (11610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:41:02,733 INFO L175 Difference]: Start difference. First operand has 104 places, 102 transitions, 799 flow. Second operand 9 states and 4348 transitions. [2022-12-13 13:41:02,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 232 transitions, 2027 flow [2022-12-13 13:41:03,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 232 transitions, 1974 flow, removed 14 selfloop flow, removed 6 redundant places. [2022-12-13 13:41:03,210 INFO L231 Difference]: Finished difference. Result has 112 places, 108 transitions, 970 flow [2022-12-13 13:41:03,210 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1161, PETRI_DIFFERENCE_MINUEND_FLOW=770, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=970, PETRI_PLACES=112, PETRI_TRANSITIONS=108} [2022-12-13 13:41:03,210 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 70 predicate places. [2022-12-13 13:41:03,210 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 108 transitions, 970 flow [2022-12-13 13:41:03,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 472.0) internal successors, (4248), 9 states have internal predecessors, (4248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:41:03,211 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:41:03,211 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] [2022-12-13 13:41:03,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 13:41:03,211 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 13:41:03,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:41:03,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1640544807, now seen corresponding path program 5 times [2022-12-13 13:41:03,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:41:03,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597761255] [2022-12-13 13:41:03,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:41:03,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:41:03,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:41:03,855 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 13:41:03,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:41:03,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597761255] [2022-12-13 13:41:03,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597761255] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:41:03,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:41:03,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 13:41:03,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021030479] [2022-12-13 13:41:03,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:41:03,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 13:41:03,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:41:03,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 13:41:03,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 13:41:04,254 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 470 out of 1161 [2022-12-13 13:41:04,256 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 108 transitions, 970 flow. Second operand has 8 states, 8 states have (on average 474.5) internal successors, (3796), 8 states have internal predecessors, (3796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:41:04,256 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:41:04,256 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 470 of 1161 [2022-12-13 13:41:04,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:41:07,889 INFO L130 PetriNetUnfolder]: 14106/24178 cut-off events. [2022-12-13 13:41:07,889 INFO L131 PetriNetUnfolder]: For 115534/115534 co-relation queries the response was YES. [2022-12-13 13:41:07,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97257 conditions, 24178 events. 14106/24178 cut-off events. For 115534/115534 co-relation queries the response was YES. Maximal size of possible extension queue 1468. Compared 200723 event pairs, 6215 based on Foata normal form. 6/24183 useless extension candidates. Maximal degree in co-relation 97200. Up to 15607 conditions per place. [2022-12-13 13:41:08,002 INFO L137 encePairwiseOnDemand]: 1152/1161 looper letters, 161 selfloop transitions, 38 changer transitions 7/206 dead transitions. [2022-12-13 13:41:08,002 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 206 transitions, 2126 flow [2022-12-13 13:41:08,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 13:41:08,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 13:41:08,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 3866 transitions. [2022-12-13 13:41:08,007 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41623600344530576 [2022-12-13 13:41:08,007 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 3866 transitions. [2022-12-13 13:41:08,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 3866 transitions. [2022-12-13 13:41:08,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:41:08,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 3866 transitions. [2022-12-13 13:41:08,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 483.25) internal successors, (3866), 8 states have internal predecessors, (3866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:41:08,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 1161.0) internal successors, (10449), 9 states have internal predecessors, (10449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:41:08,015 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 1161.0) internal successors, (10449), 9 states have internal predecessors, (10449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:41:08,016 INFO L175 Difference]: Start difference. First operand has 112 places, 108 transitions, 970 flow. Second operand 8 states and 3866 transitions. [2022-12-13 13:41:08,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 206 transitions, 2126 flow [2022-12-13 13:41:09,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 206 transitions, 2052 flow, removed 18 selfloop flow, removed 4 redundant places. [2022-12-13 13:41:09,022 INFO L231 Difference]: Finished difference. Result has 117 places, 127 transitions, 1301 flow [2022-12-13 13:41:09,023 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1161, PETRI_DIFFERENCE_MINUEND_FLOW=934, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1301, PETRI_PLACES=117, PETRI_TRANSITIONS=127} [2022-12-13 13:41:09,023 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 75 predicate places. [2022-12-13 13:41:09,023 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 127 transitions, 1301 flow [2022-12-13 13:41:09,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 474.5) internal successors, (3796), 8 states have internal predecessors, (3796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:41:09,023 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:41:09,024 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] [2022-12-13 13:41:09,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 13:41:09,024 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 13:41:09,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:41:09,024 INFO L85 PathProgramCache]: Analyzing trace with hash -525662923, now seen corresponding path program 2 times [2022-12-13 13:41:09,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:41:09,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754518498] [2022-12-13 13:41:09,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:41:09,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:41:09,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:41:09,828 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 13:41:09,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:41:09,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754518498] [2022-12-13 13:41:09,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754518498] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:41:09,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599578921] [2022-12-13 13:41:09,828 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 13:41:09,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:41:09,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23d762e4-d4dc-44b3-8a40-7b920c0a1055/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:41:09,830 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23d762e4-d4dc-44b3-8a40-7b920c0a1055/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:41:09,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23d762e4-d4dc-44b3-8a40-7b920c0a1055/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 13:41:09,971 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 13:41:09,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:41:09,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-13 13:41:09,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:41:10,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:41:10,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-13 13:41:10,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:41:10,217 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-13 13:41:44,045 WARN L233 SmtUtils]: Spent 25.28s on a formula simplification that was a NOOP. DAG size: 118 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 13:49:32,428 WARN L233 SmtUtils]: Spent 7.79m on a formula simplification that was a NOOP. DAG size: 6760 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-12-13 13:49:32,432 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:49:32,436 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 47 select indices, 47 select index equivalence classes, 0 disjoint index pairs (out of 1081 index pairs), introduced 47 new quantified variables, introduced 1081 case distinctions, treesize of input 982 treesize of output 20190