./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475211e6-35bc-4a1c-98b2-a9dde0baaf4d/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475211e6-35bc-4a1c-98b2-a9dde0baaf4d/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475211e6-35bc-4a1c-98b2-a9dde0baaf4d/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475211e6-35bc-4a1c-98b2-a9dde0baaf4d/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475211e6-35bc-4a1c-98b2-a9dde0baaf4d/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475211e6-35bc-4a1c-98b2-a9dde0baaf4d/bin/uautomizer-J5u9QxTXDZ --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 7912270168edfe57ed71790473a28594e3bc48002f5ead86961705c042bbf781 --- 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-dbf71c6-m [2022-10-17 10:49:51,998 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:49:52,002 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:49:52,057 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:49:52,058 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:49:52,062 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:49:52,065 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:49:52,071 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:49:52,074 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:49:52,079 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:49:52,081 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:49:52,083 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:49:52,084 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:49:52,087 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:49:52,089 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:49:52,091 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:49:52,093 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:49:52,094 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:49:52,097 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:49:52,106 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:49:52,111 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:49:52,112 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:49:52,113 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:49:52,114 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:49:52,119 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:49:52,119 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:49:52,120 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:49:52,121 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:49:52,122 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:49:52,123 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:49:52,123 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:49:52,124 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:49:52,125 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:49:52,126 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:49:52,127 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:49:52,127 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:49:52,128 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:49:52,128 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:49:52,129 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:49:52,129 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:49:52,130 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:49:52,131 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475211e6-35bc-4a1c-98b2-a9dde0baaf4d/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:49:52,156 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:49:52,156 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:49:52,156 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:49:52,157 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:49:52,157 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:49:52,158 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:49:52,158 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:49:52,159 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:49:52,159 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:49:52,159 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:49:52,159 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:49:52,159 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:49:52,160 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:49:52,160 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:49:52,160 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:49:52,160 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:49:52,161 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:49:52,161 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:49:52,161 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:49:52,161 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:49:52,161 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:49:52,162 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:49:52,162 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:49:52,162 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:49:52,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:49:52,163 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:49:52,163 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:49:52,163 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:49:52,163 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:49:52,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:49:52,164 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:49:52,164 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:49:52,164 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:49:52,164 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475211e6-35bc-4a1c-98b2-a9dde0baaf4d/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475211e6-35bc-4a1c-98b2-a9dde0baaf4d/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7912270168edfe57ed71790473a28594e3bc48002f5ead86961705c042bbf781 [2022-10-17 10:49:52,499 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:49:52,521 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:49:52,524 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:49:52,526 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:49:52,532 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:49:52,534 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475211e6-35bc-4a1c-98b2-a9dde0baaf4d/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-10-17 10:49:52,631 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475211e6-35bc-4a1c-98b2-a9dde0baaf4d/bin/uautomizer-J5u9QxTXDZ/data/cb75ef3cf/ce14e763ffc54d88a9bc242d9f3e937d/FLAGb1f719103 [2022-10-17 10:49:53,175 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:49:53,175 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475211e6-35bc-4a1c-98b2-a9dde0baaf4d/sv-benchmarks/c/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-10-17 10:49:53,212 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475211e6-35bc-4a1c-98b2-a9dde0baaf4d/bin/uautomizer-J5u9QxTXDZ/data/cb75ef3cf/ce14e763ffc54d88a9bc242d9f3e937d/FLAGb1f719103 [2022-10-17 10:49:53,470 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475211e6-35bc-4a1c-98b2-a9dde0baaf4d/bin/uautomizer-J5u9QxTXDZ/data/cb75ef3cf/ce14e763ffc54d88a9bc242d9f3e937d [2022-10-17 10:49:53,473 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:49:53,475 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:49:53,478 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:49:53,478 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:49:53,487 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:49:53,488 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:49:53" (1/1) ... [2022-10-17 10:49:53,489 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@637361c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:49:53, skipping insertion in model container [2022-10-17 10:49:53,492 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:49:53" (1/1) ... [2022-10-17 10:49:53,500 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:49:53,575 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:49:53,776 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475211e6-35bc-4a1c-98b2-a9dde0baaf4d/sv-benchmarks/c/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-10-17 10:49:53,960 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:49:53,969 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:49:53,982 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475211e6-35bc-4a1c-98b2-a9dde0baaf4d/sv-benchmarks/c/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-10-17 10:49:54,016 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:49:54,058 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:49:54,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:49:54 WrapperNode [2022-10-17 10:49:54,059 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:49:54,060 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:49:54,060 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:49:54,061 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:49:54,073 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:49:54" (1/1) ... [2022-10-17 10:49:54,090 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:49:54" (1/1) ... [2022-10-17 10:49:54,114 INFO L138 Inliner]: procedures = 177, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 83 [2022-10-17 10:49:54,114 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:49:54,115 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:49:54,115 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:49:54,115 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:49:54,125 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:49:54" (1/1) ... [2022-10-17 10:49:54,125 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:49:54" (1/1) ... [2022-10-17 10:49:54,129 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:49:54" (1/1) ... [2022-10-17 10:49:54,129 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:49:54" (1/1) ... [2022-10-17 10:49:54,136 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:49:54" (1/1) ... [2022-10-17 10:49:54,138 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:49:54" (1/1) ... [2022-10-17 10:49:54,140 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:49:54" (1/1) ... [2022-10-17 10:49:54,142 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:49:54" (1/1) ... [2022-10-17 10:49:54,146 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:49:54,147 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:49:54,147 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:49:54,147 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:49:54,148 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:49:54" (1/1) ... [2022-10-17 10:49:54,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:49:54,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475211e6-35bc-4a1c-98b2-a9dde0baaf4d/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:49:54,181 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475211e6-35bc-4a1c-98b2-a9dde0baaf4d/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:49:54,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475211e6-35bc-4a1c-98b2-a9dde0baaf4d/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:49:54,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:49:54,260 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-10-17 10:49:54,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:49:54,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:49:54,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:49:54,261 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-10-17 10:49:54,261 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-10-17 10:49:54,263 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-10-17 10:49:54,264 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-10-17 10:49:54,264 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-10-17 10:49:54,265 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-10-17 10:49:54,265 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-10-17 10:49:54,265 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-10-17 10:49:54,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:49:54,265 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-10-17 10:49:54,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:49:54,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:49:54,267 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-17 10:49:54,498 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:49:54,500 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:49:54,699 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:49:54,708 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:49:54,709 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 10:49:54,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:49:54 BoogieIcfgContainer [2022-10-17 10:49:54,712 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:49:54,715 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:49:54,716 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:49:54,720 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:49:54,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:49:53" (1/3) ... [2022-10-17 10:49:54,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5966486f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:49:54, skipping insertion in model container [2022-10-17 10:49:54,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:49:54" (2/3) ... [2022-10-17 10:49:54,722 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5966486f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:49:54, skipping insertion in model container [2022-10-17 10:49:54,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:49:54" (3/3) ... [2022-10-17 10:49:54,723 INFO L112 eAbstractionObserver]: Analyzing ICFG safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-10-17 10:49:54,734 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-17 10:49:54,744 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:49:54,758 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:49:54,758 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-17 10:49:54,886 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-10-17 10:49:54,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 107 transitions, 234 flow [2022-10-17 10:49:55,015 INFO L130 PetriNetUnfolder]: 2/103 cut-off events. [2022-10-17 10:49:55,016 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:49:55,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 103 events. 2/103 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 83. Up to 2 conditions per place. [2022-10-17 10:49:55,021 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 107 transitions, 234 flow [2022-10-17 10:49:55,027 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 99 places, 87 transitions, 186 flow [2022-10-17 10:49:55,043 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:49:55,057 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;@44c8d837, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:49:55,058 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-10-17 10:49:55,138 INFO L130 PetriNetUnfolder]: 1/86 cut-off events. [2022-10-17 10:49:55,139 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:49:55,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:49:55,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:49:55,141 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 2 more)] === [2022-10-17 10:49:55,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:49:55,148 INFO L85 PathProgramCache]: Analyzing trace with hash 915847760, now seen corresponding path program 1 times [2022-10-17 10:49:55,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:49:55,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542121865] [2022-10-17 10:49:55,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:49:55,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:49:55,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:49:56,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:49:56,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:49:56,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542121865] [2022-10-17 10:49:56,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542121865] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:49:56,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:49:56,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:49:56,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469500601] [2022-10-17 10:49:56,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:49:56,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:49:56,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:49:56,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:49:56,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:49:56,283 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 107 [2022-10-17 10:49:56,288 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 87 transitions, 186 flow. Second operand has 6 states, 6 states have (on average 92.83333333333333) internal successors, (557), 6 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:49:56,288 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:49:56,289 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 107 [2022-10-17 10:49:56,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:49:56,581 INFO L130 PetriNetUnfolder]: 4/108 cut-off events. [2022-10-17 10:49:56,582 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-10-17 10:49:56,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 108 events. 4/108 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 118 event pairs, 0 based on Foata normal form. 4/111 useless extension candidates. Maximal degree in co-relation 112. Up to 9 conditions per place. [2022-10-17 10:49:56,584 INFO L137 encePairwiseOnDemand]: 100/107 looper letters, 11 selfloop transitions, 2 changer transitions 11/97 dead transitions. [2022-10-17 10:49:56,585 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 97 transitions, 255 flow [2022-10-17 10:49:56,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:49:56,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-10-17 10:49:56,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 846 transitions. [2022-10-17 10:49:56,606 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8785046728971962 [2022-10-17 10:49:56,607 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 846 transitions. [2022-10-17 10:49:56,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 846 transitions. [2022-10-17 10:49:56,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:49:56,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 846 transitions. [2022-10-17 10:49:56,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 94.0) internal successors, (846), 9 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:49:56,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 107.0) internal successors, (1070), 10 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:49:56,634 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 107.0) internal successors, (1070), 10 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:49:56,636 INFO L175 Difference]: Start difference. First operand has 99 places, 87 transitions, 186 flow. Second operand 9 states and 846 transitions. [2022-10-17 10:49:56,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 97 transitions, 255 flow [2022-10-17 10:49:56,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 97 transitions, 250 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-10-17 10:49:56,645 INFO L231 Difference]: Finished difference. Result has 110 places, 85 transitions, 198 flow [2022-10-17 10:49:56,647 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=198, PETRI_PLACES=110, PETRI_TRANSITIONS=85} [2022-10-17 10:49:56,651 INFO L287 CegarLoopForPetriNet]: 99 programPoint places, 11 predicate places. [2022-10-17 10:49:56,651 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 85 transitions, 198 flow [2022-10-17 10:49:56,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 92.83333333333333) internal successors, (557), 6 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:49:56,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:49:56,652 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:49:56,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:49:56,653 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 2 more)] === [2022-10-17 10:49:56,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:49:56,654 INFO L85 PathProgramCache]: Analyzing trace with hash 910095985, now seen corresponding path program 1 times [2022-10-17 10:49:56,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:49:56,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330870475] [2022-10-17 10:49:56,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:49:56,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:49:56,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:49:57,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:49:57,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:49:57,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330870475] [2022-10-17 10:49:57,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330870475] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:49:57,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:49:57,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:49:57,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793043764] [2022-10-17 10:49:57,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:49:57,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:49:57,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:49:57,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:49:57,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:49:57,037 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 107 [2022-10-17 10:49:57,039 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 85 transitions, 198 flow. Second operand has 7 states, 7 states have (on average 87.14285714285714) internal successors, (610), 7 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:49:57,039 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:49:57,039 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 107 [2022-10-17 10:49:57,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:49:57,346 INFO L130 PetriNetUnfolder]: 64/252 cut-off events. [2022-10-17 10:49:57,347 INFO L131 PetriNetUnfolder]: For 63/66 co-relation queries the response was YES. [2022-10-17 10:49:57,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 498 conditions, 252 events. 64/252 cut-off events. For 63/66 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 817 event pairs, 12 based on Foata normal form. 6/243 useless extension candidates. Maximal degree in co-relation 460. Up to 75 conditions per place. [2022-10-17 10:49:57,355 INFO L137 encePairwiseOnDemand]: 101/107 looper letters, 21 selfloop transitions, 2 changer transitions 19/109 dead transitions. [2022-10-17 10:49:57,355 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 109 transitions, 357 flow [2022-10-17 10:49:57,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:49:57,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-10-17 10:49:57,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 809 transitions. [2022-10-17 10:49:57,361 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8400830737279336 [2022-10-17 10:49:57,361 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 809 transitions. [2022-10-17 10:49:57,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 809 transitions. [2022-10-17 10:49:57,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:49:57,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 809 transitions. [2022-10-17 10:49:57,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 89.88888888888889) internal successors, (809), 9 states have internal predecessors, (809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:49:57,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 107.0) internal successors, (1070), 10 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:49:57,371 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 107.0) internal successors, (1070), 10 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:49:57,371 INFO L175 Difference]: Start difference. First operand has 110 places, 85 transitions, 198 flow. Second operand 9 states and 809 transitions. [2022-10-17 10:49:57,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 109 transitions, 357 flow [2022-10-17 10:49:57,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 109 transitions, 323 flow, removed 14 selfloop flow, removed 8 redundant places. [2022-10-17 10:49:57,381 INFO L231 Difference]: Finished difference. Result has 110 places, 85 transitions, 202 flow [2022-10-17 10:49:57,382 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=202, PETRI_PLACES=110, PETRI_TRANSITIONS=85} [2022-10-17 10:49:57,383 INFO L287 CegarLoopForPetriNet]: 99 programPoint places, 11 predicate places. [2022-10-17 10:49:57,383 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 85 transitions, 202 flow [2022-10-17 10:49:57,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 87.14285714285714) internal successors, (610), 7 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:49:57,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:49:57,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:49:57,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:49:57,385 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 2 more)] === [2022-10-17 10:49:57,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:49:57,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1485840750, now seen corresponding path program 1 times [2022-10-17 10:49:57,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:49:57,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603947765] [2022-10-17 10:49:57,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:49:57,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:49:57,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:49:57,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:49:57,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:49:57,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603947765] [2022-10-17 10:49:57,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603947765] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:49:57,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:49:57,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:49:57,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205328597] [2022-10-17 10:49:57,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:49:57,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:49:57,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:49:57,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:49:57,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:49:57,797 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 107 [2022-10-17 10:49:57,798 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 85 transitions, 202 flow. Second operand has 7 states, 7 states have (on average 85.42857142857143) internal successors, (598), 7 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:49:57,798 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:49:57,799 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 107 [2022-10-17 10:49:57,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:49:58,304 INFO L130 PetriNetUnfolder]: 154/443 cut-off events. [2022-10-17 10:49:58,305 INFO L131 PetriNetUnfolder]: For 144/249 co-relation queries the response was YES. [2022-10-17 10:49:58,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 915 conditions, 443 events. 154/443 cut-off events. For 144/249 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1920 event pairs, 18 based on Foata normal form. 10/432 useless extension candidates. Maximal degree in co-relation 868. Up to 89 conditions per place. [2022-10-17 10:49:58,327 INFO L137 encePairwiseOnDemand]: 93/107 looper letters, 25 selfloop transitions, 14 changer transitions 44/148 dead transitions. [2022-10-17 10:49:58,327 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 148 transitions, 562 flow [2022-10-17 10:49:58,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-10-17 10:49:58,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-10-17 10:49:58,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1498 transitions. [2022-10-17 10:49:58,333 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8235294117647058 [2022-10-17 10:49:58,334 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1498 transitions. [2022-10-17 10:49:58,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1498 transitions. [2022-10-17 10:49:58,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:49:58,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1498 transitions. [2022-10-17 10:49:58,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 88.11764705882354) internal successors, (1498), 17 states have internal predecessors, (1498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:49:58,348 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 107.0) internal successors, (1926), 18 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:49:58,349 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 107.0) internal successors, (1926), 18 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:49:58,350 INFO L175 Difference]: Start difference. First operand has 110 places, 85 transitions, 202 flow. Second operand 17 states and 1498 transitions. [2022-10-17 10:49:58,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 148 transitions, 562 flow [2022-10-17 10:49:58,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 148 transitions, 500 flow, removed 28 selfloop flow, removed 8 redundant places. [2022-10-17 10:49:58,360 INFO L231 Difference]: Finished difference. Result has 127 places, 93 transitions, 318 flow [2022-10-17 10:49:58,361 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=318, PETRI_PLACES=127, PETRI_TRANSITIONS=93} [2022-10-17 10:49:58,364 INFO L287 CegarLoopForPetriNet]: 99 programPoint places, 28 predicate places. [2022-10-17 10:49:58,364 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 93 transitions, 318 flow [2022-10-17 10:49:58,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 85.42857142857143) internal successors, (598), 7 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:49:58,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:49:58,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:49:58,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:49:58,366 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 2 more)] === [2022-10-17 10:49:58,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:49:58,367 INFO L85 PathProgramCache]: Analyzing trace with hash 130923872, now seen corresponding path program 2 times [2022-10-17 10:49:58,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:49:58,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132649160] [2022-10-17 10:49:58,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:49:58,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:49:58,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:49:58,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:49:58,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:49:58,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132649160] [2022-10-17 10:49:58,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132649160] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:49:58,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:49:58,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-17 10:49:58,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949788211] [2022-10-17 10:49:58,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:49:58,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 10:49:58,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:49:58,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 10:49:58,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:49:58,735 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 107 [2022-10-17 10:49:58,736 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 93 transitions, 318 flow. Second operand has 8 states, 8 states have (on average 85.125) internal successors, (681), 8 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:49:58,736 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:49:58,736 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 107 [2022-10-17 10:49:58,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:49:59,051 INFO L130 PetriNetUnfolder]: 108/366 cut-off events. [2022-10-17 10:49:59,052 INFO L131 PetriNetUnfolder]: For 2239/2773 co-relation queries the response was YES. [2022-10-17 10:49:59,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1521 conditions, 366 events. 108/366 cut-off events. For 2239/2773 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1455 event pairs, 28 based on Foata normal form. 8/349 useless extension candidates. Maximal degree in co-relation 1459. Up to 108 conditions per place. [2022-10-17 10:49:59,058 INFO L137 encePairwiseOnDemand]: 99/107 looper letters, 20 selfloop transitions, 4 changer transitions 33/122 dead transitions. [2022-10-17 10:49:59,059 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 122 transitions, 813 flow [2022-10-17 10:49:59,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:49:59,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-10-17 10:49:59,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 882 transitions. [2022-10-17 10:49:59,063 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8242990654205608 [2022-10-17 10:49:59,063 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 882 transitions. [2022-10-17 10:49:59,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 882 transitions. [2022-10-17 10:49:59,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:49:59,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 882 transitions. [2022-10-17 10:49:59,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 88.2) internal successors, (882), 10 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:49:59,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:49:59,071 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:49:59,071 INFO L175 Difference]: Start difference. First operand has 127 places, 93 transitions, 318 flow. Second operand 10 states and 882 transitions. [2022-10-17 10:49:59,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 122 transitions, 813 flow [2022-10-17 10:49:59,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 122 transitions, 651 flow, removed 75 selfloop flow, removed 10 redundant places. [2022-10-17 10:49:59,083 INFO L231 Difference]: Finished difference. Result has 122 places, 85 transitions, 264 flow [2022-10-17 10:49:59,084 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=264, PETRI_PLACES=122, PETRI_TRANSITIONS=85} [2022-10-17 10:49:59,084 INFO L287 CegarLoopForPetriNet]: 99 programPoint places, 23 predicate places. [2022-10-17 10:49:59,085 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 85 transitions, 264 flow [2022-10-17 10:49:59,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 85.125) internal successors, (681), 8 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:49:59,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:49:59,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:49:59,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:49:59,086 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 2 more)] === [2022-10-17 10:49:59,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:49:59,087 INFO L85 PathProgramCache]: Analyzing trace with hash 308034481, now seen corresponding path program 1 times [2022-10-17 10:49:59,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:49:59,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665690883] [2022-10-17 10:49:59,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:49:59,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:49:59,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:49:59,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:49:59,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:49:59,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665690883] [2022-10-17 10:49:59,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665690883] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:49:59,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:49:59,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:49:59,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848665975] [2022-10-17 10:49:59,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:49:59,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:49:59,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:49:59,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:49:59,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:49:59,392 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 107 [2022-10-17 10:49:59,394 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 85 transitions, 264 flow. Second operand has 7 states, 7 states have (on average 89.85714285714286) internal successors, (629), 7 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:49:59,394 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:49:59,394 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 107 [2022-10-17 10:49:59,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:49:59,671 INFO L130 PetriNetUnfolder]: 67/350 cut-off events. [2022-10-17 10:49:59,671 INFO L131 PetriNetUnfolder]: For 988/1151 co-relation queries the response was YES. [2022-10-17 10:49:59,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1018 conditions, 350 events. 67/350 cut-off events. For 988/1151 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1652 event pairs, 35 based on Foata normal form. 9/331 useless extension candidates. Maximal degree in co-relation 959. Up to 82 conditions per place. [2022-10-17 10:49:59,677 INFO L137 encePairwiseOnDemand]: 99/107 looper letters, 16 selfloop transitions, 4 changer transitions 18/108 dead transitions. [2022-10-17 10:49:59,678 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 108 transitions, 525 flow [2022-10-17 10:49:59,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:49:59,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-10-17 10:49:59,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 920 transitions. [2022-10-17 10:49:59,682 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8598130841121495 [2022-10-17 10:49:59,682 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 920 transitions. [2022-10-17 10:49:59,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 920 transitions. [2022-10-17 10:49:59,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:49:59,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 920 transitions. [2022-10-17 10:49:59,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:49:59,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:49:59,693 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:49:59,693 INFO L175 Difference]: Start difference. First operand has 122 places, 85 transitions, 264 flow. Second operand 10 states and 920 transitions. [2022-10-17 10:49:59,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 108 transitions, 525 flow [2022-10-17 10:49:59,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 108 transitions, 435 flow, removed 36 selfloop flow, removed 14 redundant places. [2022-10-17 10:49:59,703 INFO L231 Difference]: Finished difference. Result has 118 places, 85 transitions, 250 flow [2022-10-17 10:49:59,704 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=250, PETRI_PLACES=118, PETRI_TRANSITIONS=85} [2022-10-17 10:49:59,707 INFO L287 CegarLoopForPetriNet]: 99 programPoint places, 19 predicate places. [2022-10-17 10:49:59,707 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 85 transitions, 250 flow [2022-10-17 10:49:59,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 89.85714285714286) internal successors, (629), 7 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:49:59,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:49:59,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:49:59,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:49:59,709 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 2 more)] === [2022-10-17 10:49:59,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:49:59,710 INFO L85 PathProgramCache]: Analyzing trace with hash -104181128, now seen corresponding path program 1 times [2022-10-17 10:49:59,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:49:59,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872719621] [2022-10-17 10:49:59,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:49:59,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:49:59,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:50:00,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:50:00,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:50:00,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872719621] [2022-10-17 10:50:00,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872719621] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:50:00,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:50:00,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:50:00,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537984651] [2022-10-17 10:50:00,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:50:00,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:50:00,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:50:00,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:50:00,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:50:00,011 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 107 [2022-10-17 10:50:00,012 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 85 transitions, 250 flow. Second operand has 6 states, 6 states have (on average 89.83333333333333) internal successors, (539), 6 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:00,012 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:50:00,013 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 107 [2022-10-17 10:50:00,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:50:00,413 INFO L130 PetriNetUnfolder]: 458/1051 cut-off events. [2022-10-17 10:50:00,413 INFO L131 PetriNetUnfolder]: For 1096/1162 co-relation queries the response was YES. [2022-10-17 10:50:00,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2502 conditions, 1051 events. 458/1051 cut-off events. For 1096/1162 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 6480 event pairs, 99 based on Foata normal form. 20/991 useless extension candidates. Maximal degree in co-relation 2448. Up to 297 conditions per place. [2022-10-17 10:50:00,437 INFO L137 encePairwiseOnDemand]: 97/107 looper letters, 27 selfloop transitions, 17 changer transitions 4/118 dead transitions. [2022-10-17 10:50:00,437 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 118 transitions, 416 flow [2022-10-17 10:50:00,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:50:00,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-10-17 10:50:00,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 842 transitions. [2022-10-17 10:50:00,442 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8743509865005192 [2022-10-17 10:50:00,442 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 842 transitions. [2022-10-17 10:50:00,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 842 transitions. [2022-10-17 10:50:00,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:50:00,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 842 transitions. [2022-10-17 10:50:00,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 93.55555555555556) internal successors, (842), 9 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:00,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 107.0) internal successors, (1070), 10 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:00,450 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 107.0) internal successors, (1070), 10 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:00,450 INFO L175 Difference]: Start difference. First operand has 118 places, 85 transitions, 250 flow. Second operand 9 states and 842 transitions. [2022-10-17 10:50:00,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 118 transitions, 416 flow [2022-10-17 10:50:00,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 118 transitions, 390 flow, removed 8 selfloop flow, removed 10 redundant places. [2022-10-17 10:50:00,460 INFO L231 Difference]: Finished difference. Result has 115 places, 100 transitions, 347 flow [2022-10-17 10:50:00,461 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=347, PETRI_PLACES=115, PETRI_TRANSITIONS=100} [2022-10-17 10:50:00,464 INFO L287 CegarLoopForPetriNet]: 99 programPoint places, 16 predicate places. [2022-10-17 10:50:00,464 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 100 transitions, 347 flow [2022-10-17 10:50:00,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 89.83333333333333) internal successors, (539), 6 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:00,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:50:00,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:50:00,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 10:50:00,466 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 2 more)] === [2022-10-17 10:50:00,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:50:00,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1106219206, now seen corresponding path program 1 times [2022-10-17 10:50:00,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:50:00,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994659154] [2022-10-17 10:50:00,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:50:00,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:50:00,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:50:00,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:50:00,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:50:00,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994659154] [2022-10-17 10:50:00,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994659154] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:50:00,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:50:00,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:50:00,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755975925] [2022-10-17 10:50:00,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:50:00,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:50:00,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:50:00,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:50:00,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:50:00,801 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 107 [2022-10-17 10:50:00,803 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 100 transitions, 347 flow. Second operand has 7 states, 7 states have (on average 89.71428571428571) internal successors, (628), 7 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:00,803 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:50:00,803 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 107 [2022-10-17 10:50:00,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:50:01,229 INFO L130 PetriNetUnfolder]: 449/1042 cut-off events. [2022-10-17 10:50:01,229 INFO L131 PetriNetUnfolder]: For 2659/3119 co-relation queries the response was YES. [2022-10-17 10:50:01,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3604 conditions, 1042 events. 449/1042 cut-off events. For 2659/3119 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 6569 event pairs, 47 based on Foata normal form. 38/1022 useless extension candidates. Maximal degree in co-relation 3553. Up to 449 conditions per place. [2022-10-17 10:50:01,249 INFO L137 encePairwiseOnDemand]: 97/107 looper letters, 30 selfloop transitions, 33 changer transitions 4/137 dead transitions. [2022-10-17 10:50:01,250 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 137 transitions, 722 flow [2022-10-17 10:50:01,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-17 10:50:01,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-10-17 10:50:01,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1121 transitions. [2022-10-17 10:50:01,256 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8730529595015576 [2022-10-17 10:50:01,256 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1121 transitions. [2022-10-17 10:50:01,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1121 transitions. [2022-10-17 10:50:01,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:50:01,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1121 transitions. [2022-10-17 10:50:01,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 93.41666666666667) internal successors, (1121), 12 states have internal predecessors, (1121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:01,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 107.0) internal successors, (1391), 13 states have internal predecessors, (1391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:01,269 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 107.0) internal successors, (1391), 13 states have internal predecessors, (1391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:01,270 INFO L175 Difference]: Start difference. First operand has 115 places, 100 transitions, 347 flow. Second operand 12 states and 1121 transitions. [2022-10-17 10:50:01,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 137 transitions, 722 flow [2022-10-17 10:50:01,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 137 transitions, 720 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-10-17 10:50:01,279 INFO L231 Difference]: Finished difference. Result has 130 places, 117 transitions, 596 flow [2022-10-17 10:50:01,280 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=596, PETRI_PLACES=130, PETRI_TRANSITIONS=117} [2022-10-17 10:50:01,280 INFO L287 CegarLoopForPetriNet]: 99 programPoint places, 31 predicate places. [2022-10-17 10:50:01,281 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 117 transitions, 596 flow [2022-10-17 10:50:01,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 89.71428571428571) internal successors, (628), 7 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:01,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:50:01,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:50:01,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 10:50:01,283 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 2 more)] === [2022-10-17 10:50:01,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:50:01,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1133511157, now seen corresponding path program 1 times [2022-10-17 10:50:01,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:50:01,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830799074] [2022-10-17 10:50:01,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:50:01,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:50:01,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:50:01,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:50:01,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:50:01,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830799074] [2022-10-17 10:50:01,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830799074] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:50:01,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:50:01,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-17 10:50:01,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875124044] [2022-10-17 10:50:01,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:50:01,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 10:50:01,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:50:01,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 10:50:01,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:50:01,584 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 107 [2022-10-17 10:50:01,586 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 117 transitions, 596 flow. Second operand has 8 states, 8 states have (on average 89.625) internal successors, (717), 8 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:01,586 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:50:01,586 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 107 [2022-10-17 10:50:01,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:50:02,081 INFO L130 PetriNetUnfolder]: 375/898 cut-off events. [2022-10-17 10:50:02,081 INFO L131 PetriNetUnfolder]: For 6945/9687 co-relation queries the response was YES. [2022-10-17 10:50:02,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4414 conditions, 898 events. 375/898 cut-off events. For 6945/9687 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 5701 event pairs, 10 based on Foata normal form. 57/912 useless extension candidates. Maximal degree in co-relation 4356. Up to 413 conditions per place. [2022-10-17 10:50:02,098 INFO L137 encePairwiseOnDemand]: 97/107 looper letters, 26 selfloop transitions, 51 changer transitions 10/157 dead transitions. [2022-10-17 10:50:02,098 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 157 transitions, 1188 flow [2022-10-17 10:50:02,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-17 10:50:02,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-10-17 10:50:02,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1399 transitions. [2022-10-17 10:50:02,104 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8716510903426792 [2022-10-17 10:50:02,104 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1399 transitions. [2022-10-17 10:50:02,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1399 transitions. [2022-10-17 10:50:02,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:50:02,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1399 transitions. [2022-10-17 10:50:02,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 93.26666666666667) internal successors, (1399), 15 states have internal predecessors, (1399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:02,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 107.0) internal successors, (1712), 16 states have internal predecessors, (1712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:02,120 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 107.0) internal successors, (1712), 16 states have internal predecessors, (1712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:02,120 INFO L175 Difference]: Start difference. First operand has 130 places, 117 transitions, 596 flow. Second operand 15 states and 1399 transitions. [2022-10-17 10:50:02,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 157 transitions, 1188 flow [2022-10-17 10:50:02,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 157 transitions, 1099 flow, removed 36 selfloop flow, removed 4 redundant places. [2022-10-17 10:50:02,143 INFO L231 Difference]: Finished difference. Result has 145 places, 139 transitions, 927 flow [2022-10-17 10:50:02,144 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=515, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=927, PETRI_PLACES=145, PETRI_TRANSITIONS=139} [2022-10-17 10:50:02,146 INFO L287 CegarLoopForPetriNet]: 99 programPoint places, 46 predicate places. [2022-10-17 10:50:02,146 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 139 transitions, 927 flow [2022-10-17 10:50:02,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 89.625) internal successors, (717), 8 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:02,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:50:02,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:50:02,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-17 10:50:02,148 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 2 more)] === [2022-10-17 10:50:02,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:50:02,148 INFO L85 PathProgramCache]: Analyzing trace with hash 763823098, now seen corresponding path program 1 times [2022-10-17 10:50:02,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:50:02,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587768632] [2022-10-17 10:50:02,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:50:02,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:50:02,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:50:02,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:50:02,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:50:02,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587768632] [2022-10-17 10:50:02,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587768632] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:50:02,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:50:02,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-10-17 10:50:02,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310284315] [2022-10-17 10:50:02,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:50:02,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-17 10:50:02,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:50:02,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-17 10:50:02,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:50:02,437 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 107 [2022-10-17 10:50:02,439 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 139 transitions, 927 flow. Second operand has 9 states, 9 states have (on average 89.55555555555556) internal successors, (806), 9 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:02,439 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:50:02,439 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 107 [2022-10-17 10:50:02,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:50:02,985 INFO L130 PetriNetUnfolder]: 301/789 cut-off events. [2022-10-17 10:50:02,985 INFO L131 PetriNetUnfolder]: For 7062/7635 co-relation queries the response was YES. [2022-10-17 10:50:02,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4146 conditions, 789 events. 301/789 cut-off events. For 7062/7635 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5372 event pairs, 4 based on Foata normal form. 68/819 useless extension candidates. Maximal degree in co-relation 4082. Up to 270 conditions per place. [2022-10-17 10:50:03,000 INFO L137 encePairwiseOnDemand]: 97/107 looper letters, 19 selfloop transitions, 57 changer transitions 20/166 dead transitions. [2022-10-17 10:50:03,001 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 166 transitions, 1368 flow [2022-10-17 10:50:03,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-10-17 10:50:03,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-10-17 10:50:03,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1661 transitions. [2022-10-17 10:50:03,009 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8624091381100727 [2022-10-17 10:50:03,009 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1661 transitions. [2022-10-17 10:50:03,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1661 transitions. [2022-10-17 10:50:03,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:50:03,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1661 transitions. [2022-10-17 10:50:03,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 92.27777777777777) internal successors, (1661), 18 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:03,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 107.0) internal successors, (2033), 19 states have internal predecessors, (2033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:03,028 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 107.0) internal successors, (2033), 19 states have internal predecessors, (2033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:03,028 INFO L175 Difference]: Start difference. First operand has 145 places, 139 transitions, 927 flow. Second operand 18 states and 1661 transitions. [2022-10-17 10:50:03,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 166 transitions, 1368 flow [2022-10-17 10:50:03,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 166 transitions, 1175 flow, removed 72 selfloop flow, removed 9 redundant places. [2022-10-17 10:50:03,100 INFO L231 Difference]: Finished difference. Result has 159 places, 139 transitions, 876 flow [2022-10-17 10:50:03,100 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=742, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=876, PETRI_PLACES=159, PETRI_TRANSITIONS=139} [2022-10-17 10:50:03,102 INFO L287 CegarLoopForPetriNet]: 99 programPoint places, 60 predicate places. [2022-10-17 10:50:03,102 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 139 transitions, 876 flow [2022-10-17 10:50:03,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 89.55555555555556) internal successors, (806), 9 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:03,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:50:03,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:50:03,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-17 10:50:03,103 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 2 more)] === [2022-10-17 10:50:03,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:50:03,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1888289169, now seen corresponding path program 1 times [2022-10-17 10:50:03,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:50:03,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8107194] [2022-10-17 10:50:03,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:50:03,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:50:03,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:50:03,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:50:03,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:50:03,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8107194] [2022-10-17 10:50:03,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8107194] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:50:03,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:50:03,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:50:03,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453133498] [2022-10-17 10:50:03,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:50:03,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:50:03,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:50:03,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:50:03,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:50:03,365 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 107 [2022-10-17 10:50:03,366 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 139 transitions, 876 flow. Second operand has 7 states, 7 states have (on average 85.85714285714286) internal successors, (601), 7 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:03,367 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:50:03,367 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 107 [2022-10-17 10:50:03,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:50:03,792 INFO L130 PetriNetUnfolder]: 469/1426 cut-off events. [2022-10-17 10:50:03,792 INFO L131 PetriNetUnfolder]: For 5341/5473 co-relation queries the response was YES. [2022-10-17 10:50:03,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5325 conditions, 1426 events. 469/1426 cut-off events. For 5341/5473 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 12189 event pairs, 2 based on Foata normal form. 1/1338 useless extension candidates. Maximal degree in co-relation 5253. Up to 200 conditions per place. [2022-10-17 10:50:03,819 INFO L137 encePairwiseOnDemand]: 95/107 looper letters, 16 selfloop transitions, 8 changer transitions 4/147 dead transitions. [2022-10-17 10:50:03,819 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 147 transitions, 968 flow [2022-10-17 10:50:03,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-17 10:50:03,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-10-17 10:50:03,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 693 transitions. [2022-10-17 10:50:03,822 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8095794392523364 [2022-10-17 10:50:03,822 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 693 transitions. [2022-10-17 10:50:03,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 693 transitions. [2022-10-17 10:50:03,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:50:03,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 693 transitions. [2022-10-17 10:50:03,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 86.625) internal successors, (693), 8 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:03,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 107.0) internal successors, (963), 9 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:03,830 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 107.0) internal successors, (963), 9 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:03,830 INFO L175 Difference]: Start difference. First operand has 159 places, 139 transitions, 876 flow. Second operand 8 states and 693 transitions. [2022-10-17 10:50:03,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 147 transitions, 968 flow [2022-10-17 10:50:03,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 147 transitions, 745 flow, removed 42 selfloop flow, removed 23 redundant places. [2022-10-17 10:50:03,951 INFO L231 Difference]: Finished difference. Result has 146 places, 142 transitions, 713 flow [2022-10-17 10:50:03,953 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=665, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=713, PETRI_PLACES=146, PETRI_TRANSITIONS=142} [2022-10-17 10:50:03,954 INFO L287 CegarLoopForPetriNet]: 99 programPoint places, 47 predicate places. [2022-10-17 10:50:03,954 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 142 transitions, 713 flow [2022-10-17 10:50:03,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 85.85714285714286) internal successors, (601), 7 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:03,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:50:03,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:50:03,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-10-17 10:50:03,956 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 2 more)] === [2022-10-17 10:50:03,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:50:03,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1430318031, now seen corresponding path program 2 times [2022-10-17 10:50:03,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:50:03,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583448212] [2022-10-17 10:50:03,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:50:03,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:50:03,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:50:04,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:50:04,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:50:04,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583448212] [2022-10-17 10:50:04,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583448212] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:50:04,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:50:04,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:50:04,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052357161] [2022-10-17 10:50:04,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:50:04,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:50:04,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:50:04,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:50:04,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:50:04,214 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 107 [2022-10-17 10:50:04,216 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 142 transitions, 713 flow. Second operand has 7 states, 7 states have (on average 90.14285714285714) internal successors, (631), 7 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:04,216 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:50:04,216 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 107 [2022-10-17 10:50:04,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:50:04,681 INFO L130 PetriNetUnfolder]: 613/1852 cut-off events. [2022-10-17 10:50:04,681 INFO L131 PetriNetUnfolder]: For 3321/3393 co-relation queries the response was YES. [2022-10-17 10:50:04,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5277 conditions, 1852 events. 613/1852 cut-off events. For 3321/3393 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 17120 event pairs, 1 based on Foata normal form. 1/1749 useless extension candidates. Maximal degree in co-relation 5253. Up to 235 conditions per place. [2022-10-17 10:50:04,700 INFO L137 encePairwiseOnDemand]: 101/107 looper letters, 0 selfloop transitions, 0 changer transitions 144/144 dead transitions. [2022-10-17 10:50:04,700 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 144 transitions, 764 flow [2022-10-17 10:50:04,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:50:04,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-10-17 10:50:04,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 635 transitions. [2022-10-17 10:50:04,702 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8477970627503337 [2022-10-17 10:50:04,702 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 635 transitions. [2022-10-17 10:50:04,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 635 transitions. [2022-10-17 10:50:04,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:50:04,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 635 transitions. [2022-10-17 10:50:04,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 90.71428571428571) internal successors, (635), 7 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:04,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 107.0) internal successors, (856), 8 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:04,707 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 107.0) internal successors, (856), 8 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:04,708 INFO L175 Difference]: Start difference. First operand has 146 places, 142 transitions, 713 flow. Second operand 7 states and 635 transitions. [2022-10-17 10:50:04,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 144 transitions, 764 flow [2022-10-17 10:50:04,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 144 transitions, 749 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-10-17 10:50:04,817 INFO L231 Difference]: Finished difference. Result has 143 places, 0 transitions, 0 flow [2022-10-17 10:50:04,817 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=143, PETRI_TRANSITIONS=0} [2022-10-17 10:50:04,818 INFO L287 CegarLoopForPetriNet]: 99 programPoint places, 44 predicate places. [2022-10-17 10:50:04,818 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 0 transitions, 0 flow [2022-10-17 10:50:04,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 90.14285714285714) internal successors, (631), 7 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:04,821 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-10-17 10:50:04,822 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2022-10-17 10:50:04,822 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-10-17 10:50:04,823 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2022-10-17 10:50:04,823 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2022-10-17 10:50:04,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-10-17 10:50:04,824 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:50:04,828 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-10-17 10:50:04,828 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-17 10:50:04,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.10 10:50:04 BasicIcfg [2022-10-17 10:50:04,834 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-17 10:50:04,835 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 10:50:04,835 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 10:50:04,835 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 10:50:04,836 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:49:54" (3/4) ... [2022-10-17 10:50:04,839 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-10-17 10:50:04,847 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-10-17 10:50:04,847 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-10-17 10:50:04,848 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-10-17 10:50:04,848 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2022-10-17 10:50:04,855 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2022-10-17 10:50:04,856 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-10-17 10:50:04,856 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-10-17 10:50:04,856 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-10-17 10:50:04,906 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475211e6-35bc-4a1c-98b2-a9dde0baaf4d/bin/uautomizer-J5u9QxTXDZ/witness.graphml [2022-10-17 10:50:04,906 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 10:50:04,907 INFO L158 Benchmark]: Toolchain (without parser) took 11431.94ms. Allocated memory was 92.3MB in the beginning and 195.0MB in the end (delta: 102.8MB). Free memory was 52.1MB in the beginning and 118.3MB in the end (delta: -66.2MB). Peak memory consumption was 37.4MB. Max. memory is 16.1GB. [2022-10-17 10:50:04,908 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 92.3MB. Free memory was 70.4MB in the beginning and 70.3MB in the end (delta: 125.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:50:04,908 INFO L158 Benchmark]: CACSL2BoogieTranslator took 581.74ms. Allocated memory is still 92.3MB. Free memory was 51.8MB in the beginning and 57.5MB in the end (delta: -5.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-10-17 10:50:04,909 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.24ms. Allocated memory is still 92.3MB. Free memory was 57.5MB in the beginning and 55.3MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 10:50:04,909 INFO L158 Benchmark]: Boogie Preprocessor took 30.91ms. Allocated memory is still 92.3MB. Free memory was 55.3MB in the beginning and 53.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:50:04,910 INFO L158 Benchmark]: RCFGBuilder took 565.60ms. Allocated memory is still 92.3MB. Free memory was 53.6MB in the beginning and 39.7MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-10-17 10:50:04,910 INFO L158 Benchmark]: TraceAbstraction took 10119.01ms. Allocated memory was 92.3MB in the beginning and 195.0MB in the end (delta: 102.8MB). Free memory was 38.9MB in the beginning and 121.5MB in the end (delta: -82.5MB). Peak memory consumption was 20.6MB. Max. memory is 16.1GB. [2022-10-17 10:50:04,911 INFO L158 Benchmark]: Witness Printer took 71.76ms. Allocated memory is still 195.0MB. Free memory was 121.5MB in the beginning and 118.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-10-17 10:50:04,913 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 92.3MB. Free memory was 70.4MB in the beginning and 70.3MB in the end (delta: 125.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 581.74ms. Allocated memory is still 92.3MB. Free memory was 51.8MB in the beginning and 57.5MB in the end (delta: -5.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.24ms. Allocated memory is still 92.3MB. Free memory was 57.5MB in the beginning and 55.3MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.91ms. Allocated memory is still 92.3MB. Free memory was 55.3MB in the beginning and 53.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 565.60ms. Allocated memory is still 92.3MB. Free memory was 53.6MB in the beginning and 39.7MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 10119.01ms. Allocated memory was 92.3MB in the beginning and 195.0MB in the end (delta: 102.8MB). Free memory was 38.9MB in the beginning and 121.5MB in the end (delta: -82.5MB). Peak memory consumption was 20.6MB. Max. memory is 16.1GB. * Witness Printer took 71.76ms. Allocated memory is still 195.0MB. Free memory was 121.5MB in the beginning and 118.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 136 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.1s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 9.9s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 5.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 420 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 420 mSDsluCounter, 503 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 575 mSDsCounter, 162 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 827 IncrementalHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 162 mSolverCounterUnsat, 116 mSDtfsCounter, 827 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 161 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=927occurred in iteration=8, InterpolantAutomatonStates: 124, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 776 NumberOfCodeBlocks, 776 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 765 ConstructedInterpolants, 0 QuantifiedInterpolants, 2565 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-10-17 10:50:04,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475211e6-35bc-4a1c-98b2-a9dde0baaf4d/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE