./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix021_power.oepc_pso.oepc_rmo.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62c80fa8-64ba-4275-9511-783a2792057f/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62c80fa8-64ba-4275-9511-783a2792057f/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62c80fa8-64ba-4275-9511-783a2792057f/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62c80fa8-64ba-4275-9511-783a2792057f/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix021_power.oepc_pso.oepc_rmo.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62c80fa8-64ba-4275-9511-783a2792057f/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62c80fa8-64ba-4275-9511-783a2792057f/bin/uautomizer-TMbwUNV5ro --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 8943650a21e052edc6a6af145da55799620df509a78c8e503eca6167eaa2f8fc --- 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-8393723 [2022-11-18 20:09:55,239 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:09:55,242 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:09:55,279 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:09:55,279 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:09:55,280 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:09:55,282 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:09:55,296 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:09:55,298 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:09:55,299 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:09:55,300 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:09:55,301 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:09:55,301 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:09:55,302 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:09:55,303 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:09:55,304 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:09:55,305 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:09:55,306 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:09:55,309 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:09:55,317 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:09:55,321 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:09:55,326 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:09:55,330 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:09:55,331 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:09:55,337 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:09:55,338 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:09:55,338 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:09:55,339 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:09:55,339 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:09:55,340 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:09:55,340 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:09:55,341 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:09:55,342 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:09:55,342 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:09:55,343 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:09:55,343 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:09:55,344 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:09:55,344 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:09:55,345 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:09:55,346 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:09:55,346 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:09:55,351 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62c80fa8-64ba-4275-9511-783a2792057f/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 20:09:55,392 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:09:55,393 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:09:55,393 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:09:55,393 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:09:55,394 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:09:55,394 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:09:55,395 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:09:55,395 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:09:55,395 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:09:55,396 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:09:55,397 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:09:55,397 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:09:55,397 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:09:55,397 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:09:55,397 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:09:55,398 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:09:55,398 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:09:55,398 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:09:55,398 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:09:55,398 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:09:55,399 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:09:55,399 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:09:55,399 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:09:55,399 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:09:55,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:09:55,400 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:09:55,400 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:09:55,400 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:09:55,400 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:09:55,400 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:09:55,402 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:09:55,402 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:09:55,402 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:09:55,403 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_62c80fa8-64ba-4275-9511-783a2792057f/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62c80fa8-64ba-4275-9511-783a2792057f/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8943650a21e052edc6a6af145da55799620df509a78c8e503eca6167eaa2f8fc [2022-11-18 20:09:55,683 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:09:55,712 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:09:55,715 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:09:55,716 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:09:55,717 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:09:55,718 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62c80fa8-64ba-4275-9511-783a2792057f/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/pthread-wmm/mix021_power.oepc_pso.oepc_rmo.oepc.i [2022-11-18 20:09:55,797 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62c80fa8-64ba-4275-9511-783a2792057f/bin/uautomizer-TMbwUNV5ro/data/b91a97b7e/3da3042e8597486fb541f250922d837f/FLAG96b2f22ef [2022-11-18 20:09:56,274 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:09:56,275 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62c80fa8-64ba-4275-9511-783a2792057f/sv-benchmarks/c/pthread-wmm/mix021_power.oepc_pso.oepc_rmo.oepc.i [2022-11-18 20:09:56,306 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62c80fa8-64ba-4275-9511-783a2792057f/bin/uautomizer-TMbwUNV5ro/data/b91a97b7e/3da3042e8597486fb541f250922d837f/FLAG96b2f22ef [2022-11-18 20:09:56,603 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62c80fa8-64ba-4275-9511-783a2792057f/bin/uautomizer-TMbwUNV5ro/data/b91a97b7e/3da3042e8597486fb541f250922d837f [2022-11-18 20:09:56,606 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:09:56,607 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:09:56,608 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:09:56,609 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:09:56,612 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:09:56,613 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:09:56" (1/1) ... [2022-11-18 20:09:56,614 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20ed2ea2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:09:56, skipping insertion in model container [2022-11-18 20:09:56,614 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:09:56" (1/1) ... [2022-11-18 20:09:56,621 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:09:56,658 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:09:56,886 WARN L234 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_62c80fa8-64ba-4275-9511-783a2792057f/sv-benchmarks/c/pthread-wmm/mix021_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2022-11-18 20:09:57,195 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:09:57,207 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:09:57,223 WARN L234 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_62c80fa8-64ba-4275-9511-783a2792057f/sv-benchmarks/c/pthread-wmm/mix021_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2022-11-18 20:09:57,300 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:09:57,354 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:09:57,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:09:57 WrapperNode [2022-11-18 20:09:57,354 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:09:57,355 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:09:57,356 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:09:57,356 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:09:57,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:09:57" (1/1) ... [2022-11-18 20:09:57,400 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:09:57" (1/1) ... [2022-11-18 20:09:57,443 INFO L138 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 144 [2022-11-18 20:09:57,446 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:09:57,447 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:09:57,447 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:09:57,448 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:09:57,456 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:09:57" (1/1) ... [2022-11-18 20:09:57,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:09:57" (1/1) ... [2022-11-18 20:09:57,460 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:09:57" (1/1) ... [2022-11-18 20:09:57,460 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:09:57" (1/1) ... [2022-11-18 20:09:57,481 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:09:57" (1/1) ... [2022-11-18 20:09:57,483 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:09:57" (1/1) ... [2022-11-18 20:09:57,484 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:09:57" (1/1) ... [2022-11-18 20:09:57,486 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:09:57" (1/1) ... [2022-11-18 20:09:57,489 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:09:57,490 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:09:57,490 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:09:57,490 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:09:57,507 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:09:57" (1/1) ... [2022-11-18 20:09:57,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:09:57,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62c80fa8-64ba-4275-9511-783a2792057f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:09:57,545 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62c80fa8-64ba-4275-9511-783a2792057f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:09:57,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62c80fa8-64ba-4275-9511-783a2792057f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:09:57,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:09:57,582 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 20:09:57,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:09:57,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:09:57,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:09:57,583 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-18 20:09:57,583 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-18 20:09:57,583 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-18 20:09:57,583 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-18 20:09:57,583 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-18 20:09:57,584 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-18 20:09:57,584 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-11-18 20:09:57,584 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-11-18 20:09:57,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:09:57,584 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 20:09:57,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:09:57,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:09:57,586 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:09:57,726 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:09:57,728 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:09:58,251 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:09:58,406 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:09:58,406 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 20:09:58,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:09:58 BoogieIcfgContainer [2022-11-18 20:09:58,409 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:09:58,411 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:09:58,412 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:09:58,415 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:09:58,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:09:56" (1/3) ... [2022-11-18 20:09:58,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e3388dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:09:58, skipping insertion in model container [2022-11-18 20:09:58,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:09:57" (2/3) ... [2022-11-18 20:09:58,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e3388dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:09:58, skipping insertion in model container [2022-11-18 20:09:58,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:09:58" (3/3) ... [2022-11-18 20:09:58,418 INFO L112 eAbstractionObserver]: Analyzing ICFG mix021_power.oepc_pso.oepc_rmo.oepc.i [2022-11-18 20:09:58,426 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:09:58,437 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:09:58,437 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-18 20:09:58,438 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:09:58,503 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 20:09:58,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 137 transitions, 294 flow [2022-11-18 20:09:58,595 INFO L130 PetriNetUnfolder]: 2/133 cut-off events. [2022-11-18 20:09:58,596 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:09:58,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 133 events. 2/133 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 71 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 92. Up to 2 conditions per place. [2022-11-18 20:09:58,601 INFO L82 GeneralOperation]: Start removeDead. Operand has 148 places, 137 transitions, 294 flow [2022-11-18 20:09:58,606 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 144 places, 133 transitions, 278 flow [2022-11-18 20:09:58,616 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:09:58,623 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;@6da04907, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:09:58,623 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-18 20:09:58,634 INFO L130 PetriNetUnfolder]: 0/50 cut-off events. [2022-11-18 20:09:58,634 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:09:58,634 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:09:58,635 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:09:58,635 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 20:09:58,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:09:58,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1278159159, now seen corresponding path program 1 times [2022-11-18 20:09:58,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:09:58,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879726759] [2022-11-18 20:09:58,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:09:58,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:09:58,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:59,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:09:59,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:09:59,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879726759] [2022-11-18 20:09:59,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879726759] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:09:59,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:09:59,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:09:59,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067398582] [2022-11-18 20:09:59,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:09:59,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:09:59,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:09:59,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:09:59,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:09:59,313 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 137 [2022-11-18 20:09:59,318 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 133 transitions, 278 flow. Second operand has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:59,318 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:09:59,319 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 137 [2022-11-18 20:09:59,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:09:59,715 INFO L130 PetriNetUnfolder]: 162/620 cut-off events. [2022-11-18 20:09:59,715 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2022-11-18 20:09:59,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 926 conditions, 620 events. 162/620 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3411 event pairs, 132 based on Foata normal form. 41/619 useless extension candidates. Maximal degree in co-relation 869. Up to 191 conditions per place. [2022-11-18 20:09:59,730 INFO L137 encePairwiseOnDemand]: 132/137 looper letters, 18 selfloop transitions, 2 changer transitions 0/137 dead transitions. [2022-11-18 20:09:59,730 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 137 transitions, 335 flow [2022-11-18 20:09:59,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:09:59,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:09:59,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 388 transitions. [2022-11-18 20:09:59,753 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9440389294403893 [2022-11-18 20:09:59,754 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 388 transitions. [2022-11-18 20:09:59,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 388 transitions. [2022-11-18 20:09:59,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:09:59,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 388 transitions. [2022-11-18 20:09:59,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:59,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:59,778 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:59,780 INFO L175 Difference]: Start difference. First operand has 144 places, 133 transitions, 278 flow. Second operand 3 states and 388 transitions. [2022-11-18 20:09:59,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 137 transitions, 335 flow [2022-11-18 20:09:59,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 137 transitions, 328 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:09:59,792 INFO L231 Difference]: Finished difference. Result has 140 places, 129 transitions, 270 flow [2022-11-18 20:09:59,794 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=270, PETRI_PLACES=140, PETRI_TRANSITIONS=129} [2022-11-18 20:09:59,798 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, -4 predicate places. [2022-11-18 20:09:59,799 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 129 transitions, 270 flow [2022-11-18 20:09:59,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:59,799 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:09:59,800 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:09:59,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:09:59,801 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 20:09:59,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:09:59,803 INFO L85 PathProgramCache]: Analyzing trace with hash 2119633754, now seen corresponding path program 1 times [2022-11-18 20:09:59,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:09:59,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305268172] [2022-11-18 20:09:59,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:09:59,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:09:59,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:00,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:10:00,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:10:00,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305268172] [2022-11-18 20:10:00,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305268172] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:10:00,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:10:00,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:10:00,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815924287] [2022-11-18 20:10:00,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:10:00,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:10:00,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:10:00,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:10:00,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:10:00,371 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 137 [2022-11-18 20:10:00,372 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 129 transitions, 270 flow. Second operand has 7 states, 7 states have (on average 106.28571428571429) internal successors, (744), 7 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:10:00,373 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:10:00,373 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 137 [2022-11-18 20:10:00,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:10:06,214 INFO L130 PetriNetUnfolder]: 13320/29116 cut-off events. [2022-11-18 20:10:06,214 INFO L131 PetriNetUnfolder]: For 1069/1069 co-relation queries the response was YES. [2022-11-18 20:10:06,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48585 conditions, 29116 events. 13320/29116 cut-off events. For 1069/1069 co-relation queries the response was YES. Maximal size of possible extension queue 1159. Compared 301499 event pairs, 1164 based on Foata normal form. 0/28582 useless extension candidates. Maximal degree in co-relation 48525. Up to 6340 conditions per place. [2022-11-18 20:10:06,402 INFO L137 encePairwiseOnDemand]: 125/137 looper letters, 46 selfloop transitions, 8 changer transitions 125/266 dead transitions. [2022-11-18 20:10:06,403 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 266 transitions, 898 flow [2022-11-18 20:10:06,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 20:10:06,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-18 20:10:06,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1521 transitions. [2022-11-18 20:10:06,408 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8540145985401459 [2022-11-18 20:10:06,408 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1521 transitions. [2022-11-18 20:10:06,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1521 transitions. [2022-11-18 20:10:06,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:10:06,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1521 transitions. [2022-11-18 20:10:06,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 117.0) internal successors, (1521), 13 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:10:06,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:10:06,420 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:10:06,420 INFO L175 Difference]: Start difference. First operand has 140 places, 129 transitions, 270 flow. Second operand 13 states and 1521 transitions. [2022-11-18 20:10:06,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 266 transitions, 898 flow [2022-11-18 20:10:06,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 266 transitions, 872 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:10:06,427 INFO L231 Difference]: Finished difference. Result has 162 places, 121 transitions, 352 flow [2022-11-18 20:10:06,427 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=352, PETRI_PLACES=162, PETRI_TRANSITIONS=121} [2022-11-18 20:10:06,428 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 18 predicate places. [2022-11-18 20:10:06,428 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 121 transitions, 352 flow [2022-11-18 20:10:06,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.28571428571429) internal successors, (744), 7 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:10:06,429 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:10:06,429 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:10:06,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:10:06,430 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 20:10:06,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:10:06,431 INFO L85 PathProgramCache]: Analyzing trace with hash -383908476, now seen corresponding path program 1 times [2022-11-18 20:10:06,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:10:06,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426193790] [2022-11-18 20:10:06,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:10:06,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:10:06,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:06,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:10:06,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:10:06,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426193790] [2022-11-18 20:10:06,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426193790] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:10:06,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:10:06,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:10:06,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521569512] [2022-11-18 20:10:06,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:10:06,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:10:06,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:10:06,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:10:06,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:10:06,822 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 137 [2022-11-18 20:10:06,824 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 121 transitions, 352 flow. Second operand has 7 states, 7 states have (on average 106.42857142857143) internal successors, (745), 7 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:10:06,824 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:10:06,824 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 137 [2022-11-18 20:10:06,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:10:10,376 INFO L130 PetriNetUnfolder]: 9662/16481 cut-off events. [2022-11-18 20:10:10,376 INFO L131 PetriNetUnfolder]: For 33049/33049 co-relation queries the response was YES. [2022-11-18 20:10:10,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51663 conditions, 16481 events. 9662/16481 cut-off events. For 33049/33049 co-relation queries the response was YES. Maximal size of possible extension queue 801. Compared 126295 event pairs, 1984 based on Foata normal form. 326/16434 useless extension candidates. Maximal degree in co-relation 51591. Up to 5235 conditions per place. [2022-11-18 20:10:10,502 INFO L137 encePairwiseOnDemand]: 124/137 looper letters, 49 selfloop transitions, 17 changer transitions 100/253 dead transitions. [2022-11-18 20:10:10,502 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 253 transitions, 1432 flow [2022-11-18 20:10:10,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 20:10:10,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-18 20:10:10,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1515 transitions. [2022-11-18 20:10:10,509 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8506457046603032 [2022-11-18 20:10:10,510 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1515 transitions. [2022-11-18 20:10:10,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1515 transitions. [2022-11-18 20:10:10,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:10:10,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1515 transitions. [2022-11-18 20:10:10,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 116.53846153846153) internal successors, (1515), 13 states have internal predecessors, (1515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:10:10,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:10:10,520 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:10:10,520 INFO L175 Difference]: Start difference. First operand has 162 places, 121 transitions, 352 flow. Second operand 13 states and 1515 transitions. [2022-11-18 20:10:10,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 253 transitions, 1432 flow [2022-11-18 20:10:10,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 253 transitions, 1404 flow, removed 12 selfloop flow, removed 4 redundant places. [2022-11-18 20:10:10,819 INFO L231 Difference]: Finished difference. Result has 159 places, 130 transitions, 525 flow [2022-11-18 20:10:10,820 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=525, PETRI_PLACES=159, PETRI_TRANSITIONS=130} [2022-11-18 20:10:10,820 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 15 predicate places. [2022-11-18 20:10:10,821 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 130 transitions, 525 flow [2022-11-18 20:10:10,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.42857142857143) internal successors, (745), 7 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:10:10,821 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:10:10,822 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:10:10,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:10:10,822 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 20:10:10,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:10:10,823 INFO L85 PathProgramCache]: Analyzing trace with hash -545408253, now seen corresponding path program 1 times [2022-11-18 20:10:10,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:10:10,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161147225] [2022-11-18 20:10:10,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:10:10,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:10:10,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:11,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:10:11,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:10:11,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161147225] [2022-11-18 20:10:11,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161147225] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:10:11,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:10:11,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:10:11,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356847834] [2022-11-18 20:10:11,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:10:11,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:10:11,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:10:11,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:10:11,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:10:11,188 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 137 [2022-11-18 20:10:11,189 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 130 transitions, 525 flow. Second operand has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:10:11,189 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:10:11,189 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 137 [2022-11-18 20:10:11,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:10:13,946 INFO L130 PetriNetUnfolder]: 7125/13105 cut-off events. [2022-11-18 20:10:13,946 INFO L131 PetriNetUnfolder]: For 49009/50640 co-relation queries the response was YES. [2022-11-18 20:10:14,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45108 conditions, 13105 events. 7125/13105 cut-off events. For 49009/50640 co-relation queries the response was YES. Maximal size of possible extension queue 766. Compared 107041 event pairs, 2662 based on Foata normal form. 548/13036 useless extension candidates. Maximal degree in co-relation 45028. Up to 5945 conditions per place. [2022-11-18 20:10:14,075 INFO L137 encePairwiseOnDemand]: 130/137 looper letters, 32 selfloop transitions, 7 changer transitions 67/211 dead transitions. [2022-11-18 20:10:14,076 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 211 transitions, 1337 flow [2022-11-18 20:10:14,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:10:14,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:10:14,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1088 transitions. [2022-11-18 20:10:14,079 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8824006488240065 [2022-11-18 20:10:14,079 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1088 transitions. [2022-11-18 20:10:14,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1088 transitions. [2022-11-18 20:10:14,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:10:14,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1088 transitions. [2022-11-18 20:10:14,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 120.88888888888889) internal successors, (1088), 9 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:10:14,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 137.0) internal successors, (1370), 10 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:10:14,086 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 137.0) internal successors, (1370), 10 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:10:14,087 INFO L175 Difference]: Start difference. First operand has 159 places, 130 transitions, 525 flow. Second operand 9 states and 1088 transitions. [2022-11-18 20:10:14,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 211 transitions, 1337 flow [2022-11-18 20:10:14,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 211 transitions, 1289 flow, removed 24 selfloop flow, removed 9 redundant places. [2022-11-18 20:10:14,378 INFO L231 Difference]: Finished difference. Result has 156 places, 136 transitions, 644 flow [2022-11-18 20:10:14,379 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=644, PETRI_PLACES=156, PETRI_TRANSITIONS=136} [2022-11-18 20:10:14,380 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 12 predicate places. [2022-11-18 20:10:14,380 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 136 transitions, 644 flow [2022-11-18 20:10:14,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:10:14,380 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:10:14,381 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:10:14,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:10:14,381 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 20:10:14,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:10:14,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1100444344, now seen corresponding path program 1 times [2022-11-18 20:10:14,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:10:14,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195603071] [2022-11-18 20:10:14,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:10:14,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:10:14,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:14,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:10:14,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:10:14,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195603071] [2022-11-18 20:10:14,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195603071] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:10:14,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:10:14,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:10:14,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970791084] [2022-11-18 20:10:14,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:10:14,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:10:14,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:10:14,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:10:14,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:10:14,668 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 137 [2022-11-18 20:10:14,669 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 136 transitions, 644 flow. Second operand has 7 states, 7 states have (on average 106.71428571428571) internal successors, (747), 7 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:10:14,669 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:10:14,669 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 137 [2022-11-18 20:10:14,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:10:18,377 INFO L130 PetriNetUnfolder]: 9343/16694 cut-off events. [2022-11-18 20:10:18,377 INFO L131 PetriNetUnfolder]: For 66448/66698 co-relation queries the response was YES. [2022-11-18 20:10:18,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59317 conditions, 16694 events. 9343/16694 cut-off events. For 66448/66698 co-relation queries the response was YES. Maximal size of possible extension queue 782. Compared 133553 event pairs, 2020 based on Foata normal form. 262/16265 useless extension candidates. Maximal degree in co-relation 59233. Up to 4348 conditions per place. [2022-11-18 20:10:18,508 INFO L137 encePairwiseOnDemand]: 125/137 looper letters, 58 selfloop transitions, 24 changer transitions 92/261 dead transitions. [2022-11-18 20:10:18,508 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 261 transitions, 1822 flow [2022-11-18 20:10:18,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 20:10:18,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-18 20:10:18,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1498 transitions. [2022-11-18 20:10:18,512 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.841100505334082 [2022-11-18 20:10:18,512 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1498 transitions. [2022-11-18 20:10:18,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1498 transitions. [2022-11-18 20:10:18,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:10:18,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1498 transitions. [2022-11-18 20:10:18,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 115.23076923076923) internal successors, (1498), 13 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) [2022-11-18 20:10:18,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:10:18,521 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:10:18,521 INFO L175 Difference]: Start difference. First operand has 156 places, 136 transitions, 644 flow. Second operand 13 states and 1498 transitions. [2022-11-18 20:10:18,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 261 transitions, 1822 flow [2022-11-18 20:10:18,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 261 transitions, 1768 flow, removed 23 selfloop flow, removed 4 redundant places. [2022-11-18 20:10:18,690 INFO L231 Difference]: Finished difference. Result has 170 places, 143 transitions, 843 flow [2022-11-18 20:10:18,690 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=627, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=843, PETRI_PLACES=170, PETRI_TRANSITIONS=143} [2022-11-18 20:10:18,694 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 26 predicate places. [2022-11-18 20:10:18,695 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 143 transitions, 843 flow [2022-11-18 20:10:18,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.71428571428571) internal successors, (747), 7 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:10:18,695 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:10:18,695 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:10:18,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:10:18,696 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 20:10:18,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:10:18,697 INFO L85 PathProgramCache]: Analyzing trace with hash 2124534054, now seen corresponding path program 1 times [2022-11-18 20:10:18,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:10:18,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266534072] [2022-11-18 20:10:18,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:10:18,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:10:18,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:18,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:10:18,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:10:18,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266534072] [2022-11-18 20:10:18,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266534072] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:10:18,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:10:18,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:10:18,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051250224] [2022-11-18 20:10:18,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:10:18,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:10:18,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:10:18,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:10:18,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:10:18,962 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 137 [2022-11-18 20:10:18,964 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 143 transitions, 843 flow. Second operand has 6 states, 6 states have (on average 112.0) internal successors, (672), 6 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:10:18,964 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:10:18,964 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 137 [2022-11-18 20:10:18,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:10:27,939 INFO L130 PetriNetUnfolder]: 29208/51369 cut-off events. [2022-11-18 20:10:27,939 INFO L131 PetriNetUnfolder]: For 102081/115221 co-relation queries the response was YES. [2022-11-18 20:10:28,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126699 conditions, 51369 events. 29208/51369 cut-off events. For 102081/115221 co-relation queries the response was YES. Maximal size of possible extension queue 2844. Compared 491197 event pairs, 1817 based on Foata normal form. 555/49731 useless extension candidates. Maximal degree in co-relation 126609. Up to 16623 conditions per place. [2022-11-18 20:10:28,390 INFO L137 encePairwiseOnDemand]: 126/137 looper letters, 101 selfloop transitions, 20 changer transitions 0/239 dead transitions. [2022-11-18 20:10:28,390 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 239 transitions, 1535 flow [2022-11-18 20:10:28,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:10:28,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 20:10:28,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1207 transitions. [2022-11-18 20:10:28,398 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.881021897810219 [2022-11-18 20:10:28,399 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1207 transitions. [2022-11-18 20:10:28,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1207 transitions. [2022-11-18 20:10:28,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:10:28,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1207 transitions. [2022-11-18 20:10:28,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 120.7) internal successors, (1207), 10 states have internal predecessors, (1207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:10:28,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 137.0) internal successors, (1507), 11 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:10:28,406 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 137.0) internal successors, (1507), 11 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:10:28,406 INFO L175 Difference]: Start difference. First operand has 170 places, 143 transitions, 843 flow. Second operand 10 states and 1207 transitions. [2022-11-18 20:10:28,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 239 transitions, 1535 flow [2022-11-18 20:10:28,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 239 transitions, 1511 flow, removed 12 selfloop flow, removed 3 redundant places. [2022-11-18 20:10:28,551 INFO L231 Difference]: Finished difference. Result has 173 places, 161 transitions, 962 flow [2022-11-18 20:10:28,551 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=819, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=962, PETRI_PLACES=173, PETRI_TRANSITIONS=161} [2022-11-18 20:10:28,553 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 29 predicate places. [2022-11-18 20:10:28,554 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 161 transitions, 962 flow [2022-11-18 20:10:28,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 112.0) internal successors, (672), 6 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:10:28,554 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:10:28,554 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:10:28,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:10:28,555 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 20:10:28,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:10:28,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1422842106, now seen corresponding path program 1 times [2022-11-18 20:10:28,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:10:28,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100261955] [2022-11-18 20:10:28,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:10:28,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:10:28,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:28,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:10:28,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:10:28,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100261955] [2022-11-18 20:10:28,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100261955] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:10:28,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:10:28,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:10:28,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835467697] [2022-11-18 20:10:28,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:10:28,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:10:28,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:10:28,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:10:28,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:10:28,844 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 137 [2022-11-18 20:10:28,845 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 161 transitions, 962 flow. Second operand has 6 states, 6 states have (on average 114.5) internal successors, (687), 6 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:10:28,845 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:10:28,845 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 137 [2022-11-18 20:10:28,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:10:34,584 INFO L130 PetriNetUnfolder]: 10337/29309 cut-off events. [2022-11-18 20:10:34,584 INFO L131 PetriNetUnfolder]: For 89009/93609 co-relation queries the response was YES. [2022-11-18 20:10:34,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89763 conditions, 29309 events. 10337/29309 cut-off events. For 89009/93609 co-relation queries the response was YES. Maximal size of possible extension queue 1944. Compared 383156 event pairs, 4227 based on Foata normal form. 602/27739 useless extension candidates. Maximal degree in co-relation 89667. Up to 5687 conditions per place. [2022-11-18 20:10:34,915 INFO L137 encePairwiseOnDemand]: 131/137 looper letters, 68 selfloop transitions, 18 changer transitions 6/221 dead transitions. [2022-11-18 20:10:34,915 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 221 transitions, 1550 flow [2022-11-18 20:10:34,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:10:34,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:10:34,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1084 transitions. [2022-11-18 20:10:34,919 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8791565287915653 [2022-11-18 20:10:34,919 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1084 transitions. [2022-11-18 20:10:34,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1084 transitions. [2022-11-18 20:10:34,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:10:34,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1084 transitions. [2022-11-18 20:10:34,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 120.44444444444444) internal successors, (1084), 9 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:10:34,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 137.0) internal successors, (1370), 10 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:10:34,927 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 137.0) internal successors, (1370), 10 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:10:34,927 INFO L175 Difference]: Start difference. First operand has 173 places, 161 transitions, 962 flow. Second operand 9 states and 1084 transitions. [2022-11-18 20:10:34,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 221 transitions, 1550 flow [2022-11-18 20:10:35,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 221 transitions, 1519 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:10:35,539 INFO L231 Difference]: Finished difference. Result has 186 places, 169 transitions, 1110 flow [2022-11-18 20:10:35,539 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=938, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1110, PETRI_PLACES=186, PETRI_TRANSITIONS=169} [2022-11-18 20:10:35,540 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 42 predicate places. [2022-11-18 20:10:35,540 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 169 transitions, 1110 flow [2022-11-18 20:10:35,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 114.5) internal successors, (687), 6 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:10:35,541 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:10:35,541 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:10:35,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:10:35,541 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 20:10:35,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:10:35,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1007757656, now seen corresponding path program 1 times [2022-11-18 20:10:35,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:10:35,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847268391] [2022-11-18 20:10:35,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:10:35,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:10:35,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:35,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:10:35,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:10:35,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847268391] [2022-11-18 20:10:35,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847268391] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:10:35,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:10:35,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:10:35,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396935041] [2022-11-18 20:10:35,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:10:35,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:10:35,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:10:35,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:10:35,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:10:35,817 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 137 [2022-11-18 20:10:35,818 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 169 transitions, 1110 flow. Second operand has 7 states, 7 states have (on average 112.0) internal successors, (784), 7 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:10:35,818 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:10:35,818 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 137 [2022-11-18 20:10:35,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand