./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix021.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cceca4c7-783d-4485-9695-920704d1d266/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cceca4c7-783d-4485-9695-920704d1d266/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cceca4c7-783d-4485-9695-920704d1d266/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cceca4c7-783d-4485-9695-920704d1d266/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix021.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cceca4c7-783d-4485-9695-920704d1d266/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cceca4c7-783d-4485-9695-920704d1d266/bin/uautomizer-J5u9QxTXDZ --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 576d0750cd121d18ae295ddde1dd1649436f79f5ff3834655e4b6c15fd1260db --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 10:12:04,385 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:12:04,391 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:12:04,426 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:12:04,426 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:12:04,428 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:12:04,430 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:12:04,432 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:12:04,438 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:12:04,439 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:12:04,440 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:12:04,442 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:12:04,442 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:12:04,443 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:12:04,445 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:12:04,446 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:12:04,447 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:12:04,448 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:12:04,450 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:12:04,456 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:12:04,465 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:12:04,473 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:12:04,475 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:12:04,476 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:12:04,482 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:12:04,482 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:12:04,483 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:12:04,484 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:12:04,485 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:12:04,486 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:12:04,486 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:12:04,487 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:12:04,488 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:12:04,496 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:12:04,497 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:12:04,497 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:12:04,498 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:12:04,498 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:12:04,499 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:12:04,500 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:12:04,500 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:12:04,501 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cceca4c7-783d-4485-9695-920704d1d266/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:12:04,548 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:12:04,549 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:12:04,549 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:12:04,550 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:12:04,551 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:12:04,551 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:12:04,552 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:12:04,552 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:12:04,553 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:12:04,568 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:12:04,569 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:12:04,569 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:12:04,569 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:12:04,569 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:12:04,570 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:12:04,570 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:12:04,570 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:12:04,570 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:12:04,570 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:12:04,571 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:12:04,571 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:12:04,571 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:12:04,571 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:12:04,571 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:12:04,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:12:04,572 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:12:04,573 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:12:04,574 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:12:04,574 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:12:04,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:12:04,574 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:12:04,575 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:12:04,575 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:12:04,575 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_cceca4c7-783d-4485-9695-920704d1d266/bin/uautomizer-J5u9QxTXDZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cceca4c7-783d-4485-9695-920704d1d266/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 576d0750cd121d18ae295ddde1dd1649436f79f5ff3834655e4b6c15fd1260db [2022-10-17 10:12:04,835 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:12:04,873 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:12:04,876 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:12:04,877 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:12:04,878 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:12:04,879 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cceca4c7-783d-4485-9695-920704d1d266/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/pthread-wmm/mix021.opt.i [2022-10-17 10:12:04,943 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cceca4c7-783d-4485-9695-920704d1d266/bin/uautomizer-J5u9QxTXDZ/data/f58072c5f/0b12d9df4a1a4ead9beb367cad7b5bd7/FLAGa8c357c36 [2022-10-17 10:12:05,576 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:12:05,577 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cceca4c7-783d-4485-9695-920704d1d266/sv-benchmarks/c/pthread-wmm/mix021.opt.i [2022-10-17 10:12:05,598 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cceca4c7-783d-4485-9695-920704d1d266/bin/uautomizer-J5u9QxTXDZ/data/f58072c5f/0b12d9df4a1a4ead9beb367cad7b5bd7/FLAGa8c357c36 [2022-10-17 10:12:05,790 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cceca4c7-783d-4485-9695-920704d1d266/bin/uautomizer-J5u9QxTXDZ/data/f58072c5f/0b12d9df4a1a4ead9beb367cad7b5bd7 [2022-10-17 10:12:05,793 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:12:05,795 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:12:05,796 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:12:05,797 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:12:05,800 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:12:05,801 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:12:05" (1/1) ... [2022-10-17 10:12:05,802 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49b360fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:12:05, skipping insertion in model container [2022-10-17 10:12:05,803 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:12:05" (1/1) ... [2022-10-17 10:12:05,810 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:12:05,857 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:12:06,058 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cceca4c7-783d-4485-9695-920704d1d266/sv-benchmarks/c/pthread-wmm/mix021.opt.i[944,957] [2022-10-17 10:12:06,282 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:12:06,291 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:12:06,303 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cceca4c7-783d-4485-9695-920704d1d266/sv-benchmarks/c/pthread-wmm/mix021.opt.i[944,957] [2022-10-17 10:12:06,370 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:12:06,427 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:12:06,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:12:06 WrapperNode [2022-10-17 10:12:06,428 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:12:06,429 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:12:06,429 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:12:06,430 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:12:06,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:12:06" (1/1) ... [2022-10-17 10:12:06,479 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:12:06" (1/1) ... [2022-10-17 10:12:06,535 INFO L138 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 294 [2022-10-17 10:12:06,536 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:12:06,536 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:12:06,536 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:12:06,536 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:12:06,545 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:12:06" (1/1) ... [2022-10-17 10:12:06,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:12:06" (1/1) ... [2022-10-17 10:12:06,555 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:12:06" (1/1) ... [2022-10-17 10:12:06,555 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:12:06" (1/1) ... [2022-10-17 10:12:06,568 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:12:06" (1/1) ... [2022-10-17 10:12:06,574 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:12:06" (1/1) ... [2022-10-17 10:12:06,578 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:12:06" (1/1) ... [2022-10-17 10:12:06,581 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:12:06" (1/1) ... [2022-10-17 10:12:06,587 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:12:06,594 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:12:06,594 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:12:06,594 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:12:06,595 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:12:06" (1/1) ... [2022-10-17 10:12:06,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:12:06,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cceca4c7-783d-4485-9695-920704d1d266/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:12:06,648 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cceca4c7-783d-4485-9695-920704d1d266/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:12:06,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cceca4c7-783d-4485-9695-920704d1d266/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:12:06,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:12:06,687 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-10-17 10:12:06,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:12:06,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:12:06,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:12:06,688 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-10-17 10:12:06,688 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-10-17 10:12:06,688 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-10-17 10:12:06,689 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-10-17 10:12:06,689 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-10-17 10:12:06,689 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-10-17 10:12:06,689 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-10-17 10:12:06,689 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-10-17 10:12:06,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:12:06,690 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-10-17 10:12:06,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:12:06,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:12:06,692 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-17 10:12:06,838 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:12:06,840 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:12:07,753 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:12:08,439 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:12:08,440 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 10:12:08,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:12:08 BoogieIcfgContainer [2022-10-17 10:12:08,443 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:12:08,446 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:12:08,446 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:12:08,450 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:12:08,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:12:05" (1/3) ... [2022-10-17 10:12:08,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b61ff58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:12:08, skipping insertion in model container [2022-10-17 10:12:08,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:12:06" (2/3) ... [2022-10-17 10:12:08,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b61ff58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:12:08, skipping insertion in model container [2022-10-17 10:12:08,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:12:08" (3/3) ... [2022-10-17 10:12:08,457 INFO L112 eAbstractionObserver]: Analyzing ICFG mix021.opt.i [2022-10-17 10:12:08,467 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-17 10:12:08,478 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:12:08,479 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-10-17 10:12:08,479 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-17 10:12:08,583 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-10-17 10:12:08,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 134 transitions, 288 flow [2022-10-17 10:12:08,737 INFO L130 PetriNetUnfolder]: 2/130 cut-off events. [2022-10-17 10:12:08,737 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:12:08,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 130 events. 2/130 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 63 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 89. Up to 2 conditions per place. [2022-10-17 10:12:08,742 INFO L82 GeneralOperation]: Start removeDead. Operand has 145 places, 134 transitions, 288 flow [2022-10-17 10:12:08,748 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 141 places, 130 transitions, 272 flow [2022-10-17 10:12:08,758 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:12:08,765 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;@86a793b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:12:08,765 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-10-17 10:12:08,805 INFO L130 PetriNetUnfolder]: 0/89 cut-off events. [2022-10-17 10:12:08,806 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:12:08,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:12:08,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:12:08,808 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:12:08,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:12:08,816 INFO L85 PathProgramCache]: Analyzing trace with hash 873912980, now seen corresponding path program 1 times [2022-10-17 10:12:08,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:12:08,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236616872] [2022-10-17 10:12:08,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:12:08,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:12:09,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:12:09,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:12:09,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:12:09,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236616872] [2022-10-17 10:12:09,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236616872] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:12:09,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:12:09,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:12:09,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93144697] [2022-10-17 10:12:09,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:12:09,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:12:09,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:12:09,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:12:09,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:12:09,741 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 134 [2022-10-17 10:12:09,754 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 130 transitions, 272 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) [2022-10-17 10:12:09,754 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:12:09,754 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 134 [2022-10-17 10:12:09,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:12:09,929 INFO L130 PetriNetUnfolder]: 14/211 cut-off events. [2022-10-17 10:12:09,929 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-10-17 10:12:09,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 262 conditions, 211 events. 14/211 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 438 event pairs, 6 based on Foata normal form. 5/205 useless extension candidates. Maximal degree in co-relation 205. Up to 25 conditions per place. [2022-10-17 10:12:09,933 INFO L137 encePairwiseOnDemand]: 129/134 looper letters, 10 selfloop transitions, 2 changer transitions 0/128 dead transitions. [2022-10-17 10:12:09,933 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 128 transitions, 292 flow [2022-10-17 10:12:09,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:12:09,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 10:12:09,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 377 transitions. [2022-10-17 10:12:09,950 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9378109452736318 [2022-10-17 10:12:09,951 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 377 transitions. [2022-10-17 10:12:09,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 377 transitions. [2022-10-17 10:12:09,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:12:09,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 377 transitions. [2022-10-17 10:12:09,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:12:09,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:12:09,968 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:12:09,970 INFO L175 Difference]: Start difference. First operand has 141 places, 130 transitions, 272 flow. Second operand 3 states and 377 transitions. [2022-10-17 10:12:09,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 128 transitions, 292 flow [2022-10-17 10:12:09,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 128 transitions, 288 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-10-17 10:12:09,979 INFO L231 Difference]: Finished difference. Result has 137 places, 126 transitions, 264 flow [2022-10-17 10:12:09,982 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=264, PETRI_PLACES=137, PETRI_TRANSITIONS=126} [2022-10-17 10:12:09,986 INFO L287 CegarLoopForPetriNet]: 141 programPoint places, -4 predicate places. [2022-10-17 10:12:09,986 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 126 transitions, 264 flow [2022-10-17 10:12:09,987 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) [2022-10-17 10:12:09,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:12:09,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:12:09,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:12:09,988 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:12:09,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:12:09,989 INFO L85 PathProgramCache]: Analyzing trace with hash -279105822, now seen corresponding path program 1 times [2022-10-17 10:12:09,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:12:09,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478658003] [2022-10-17 10:12:09,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:12:09,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:12:10,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:12:10,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:12:10,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:12:10,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478658003] [2022-10-17 10:12:10,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478658003] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:12:10,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:12:10,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:12:10,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360932585] [2022-10-17 10:12:10,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:12:10,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:12:10,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:12:10,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:12:10,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:12:10,563 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 134 [2022-10-17 10:12:10,571 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 126 transitions, 264 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) [2022-10-17 10:12:10,571 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:12:10,571 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 134 [2022-10-17 10:12:10,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:12:13,627 INFO L130 PetriNetUnfolder]: 3270/7989 cut-off events. [2022-10-17 10:12:13,628 INFO L131 PetriNetUnfolder]: For 126/126 co-relation queries the response was YES. [2022-10-17 10:12:13,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12897 conditions, 7989 events. 3270/7989 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 73951 event pairs, 390 based on Foata normal form. 0/7802 useless extension candidates. Maximal degree in co-relation 12837. Up to 1496 conditions per place. [2022-10-17 10:12:13,708 INFO L137 encePairwiseOnDemand]: 122/134 looper letters, 35 selfloop transitions, 8 changer transitions 92/222 dead transitions. [2022-10-17 10:12:13,709 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 222 transitions, 706 flow [2022-10-17 10:12:13,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-17 10:12:13,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-10-17 10:12:13,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1477 transitions. [2022-10-17 10:12:13,719 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8478760045924225 [2022-10-17 10:12:13,719 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1477 transitions. [2022-10-17 10:12:13,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1477 transitions. [2022-10-17 10:12:13,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:12:13,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1477 transitions. [2022-10-17 10:12:13,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 113.61538461538461) internal successors, (1477), 13 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:12:13,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 134.0) internal successors, (1876), 14 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:12:13,737 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 134.0) internal successors, (1876), 14 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:12:13,737 INFO L175 Difference]: Start difference. First operand has 137 places, 126 transitions, 264 flow. Second operand 13 states and 1477 transitions. [2022-10-17 10:12:13,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 222 transitions, 706 flow [2022-10-17 10:12:13,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 222 transitions, 696 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-10-17 10:12:13,748 INFO L231 Difference]: Finished difference. Result has 159 places, 118 transitions, 346 flow [2022-10-17 10:12:13,749 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=346, PETRI_PLACES=159, PETRI_TRANSITIONS=118} [2022-10-17 10:12:13,750 INFO L287 CegarLoopForPetriNet]: 141 programPoint places, 18 predicate places. [2022-10-17 10:12:13,750 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 118 transitions, 346 flow [2022-10-17 10:12:13,751 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) [2022-10-17 10:12:13,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:12:13,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:12:13,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:12:13,752 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:12:13,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:12:13,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1634235661, now seen corresponding path program 1 times [2022-10-17 10:12:13,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:12:13,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086745473] [2022-10-17 10:12:13,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:12:13,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:12:13,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:12:14,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:12:14,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:12:14,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086745473] [2022-10-17 10:12:14,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086745473] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:12:14,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:12:14,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:12:14,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934878402] [2022-10-17 10:12:14,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:12:14,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:12:14,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:12:14,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:12:14,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:12:14,308 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 134 [2022-10-17 10:12:14,310 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 118 transitions, 346 flow. Second operand has 7 states, 7 states have (on average 106.57142857142857) internal successors, (746), 7 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:12:14,310 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:12:14,310 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 134 [2022-10-17 10:12:14,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:12:16,037 INFO L130 PetriNetUnfolder]: 2117/4299 cut-off events. [2022-10-17 10:12:16,038 INFO L131 PetriNetUnfolder]: For 10723/10723 co-relation queries the response was YES. [2022-10-17 10:12:16,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15056 conditions, 4299 events. 2117/4299 cut-off events. For 10723/10723 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 32191 event pairs, 152 based on Foata normal form. 87/4273 useless extension candidates. Maximal degree in co-relation 14984. Up to 1261 conditions per place. [2022-10-17 10:12:16,104 INFO L137 encePairwiseOnDemand]: 120/134 looper letters, 41 selfloop transitions, 18 changer transitions 70/216 dead transitions. [2022-10-17 10:12:16,104 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 216 transitions, 1284 flow [2022-10-17 10:12:16,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-17 10:12:16,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-10-17 10:12:16,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1478 transitions. [2022-10-17 10:12:16,110 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8484500574052812 [2022-10-17 10:12:16,110 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1478 transitions. [2022-10-17 10:12:16,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1478 transitions. [2022-10-17 10:12:16,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:12:16,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1478 transitions. [2022-10-17 10:12:16,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 113.6923076923077) internal successors, (1478), 13 states have internal predecessors, (1478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:12:16,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 134.0) internal successors, (1876), 14 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:12:16,123 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 134.0) internal successors, (1876), 14 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:12:16,124 INFO L175 Difference]: Start difference. First operand has 159 places, 118 transitions, 346 flow. Second operand 13 states and 1478 transitions. [2022-10-17 10:12:16,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 216 transitions, 1284 flow [2022-10-17 10:12:16,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 216 transitions, 1256 flow, removed 12 selfloop flow, removed 4 redundant places. [2022-10-17 10:12:16,161 INFO L231 Difference]: Finished difference. Result has 156 places, 127 transitions, 523 flow [2022-10-17 10:12:16,161 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=523, PETRI_PLACES=156, PETRI_TRANSITIONS=127} [2022-10-17 10:12:16,162 INFO L287 CegarLoopForPetriNet]: 141 programPoint places, 15 predicate places. [2022-10-17 10:12:16,162 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 127 transitions, 523 flow [2022-10-17 10:12:16,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.57142857142857) internal successors, (746), 7 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:12:16,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:12:16,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:12:16,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:12:16,164 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:12:16,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:12:16,165 INFO L85 PathProgramCache]: Analyzing trace with hash 612000748, now seen corresponding path program 1 times [2022-10-17 10:12:16,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:12:16,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476806079] [2022-10-17 10:12:16,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:12:16,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:12:16,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:12:16,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:12:16,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:12:16,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476806079] [2022-10-17 10:12:16,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476806079] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:12:16,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:12:16,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:12:16,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671415756] [2022-10-17 10:12:16,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:12:16,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:12:16,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:12:16,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:12:16,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:12:16,602 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 134 [2022-10-17 10:12:16,604 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 127 transitions, 523 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) [2022-10-17 10:12:16,604 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:12:16,604 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 134 [2022-10-17 10:12:16,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:12:18,494 INFO L130 PetriNetUnfolder]: 1733/3820 cut-off events. [2022-10-17 10:12:18,495 INFO L131 PetriNetUnfolder]: For 18675/18675 co-relation queries the response was YES. [2022-10-17 10:12:18,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15782 conditions, 3820 events. 1733/3820 cut-off events. For 18675/18675 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 28459 event pairs, 318 based on Foata normal form. 70/3736 useless extension candidates. Maximal degree in co-relation 15696. Up to 1027 conditions per place. [2022-10-17 10:12:18,562 INFO L137 encePairwiseOnDemand]: 119/134 looper letters, 47 selfloop transitions, 24 changer transitions 76/234 dead transitions. [2022-10-17 10:12:18,562 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 234 transitions, 1807 flow [2022-10-17 10:12:18,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-17 10:12:18,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-10-17 10:12:18,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1473 transitions. [2022-10-17 10:12:18,572 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8455797933409873 [2022-10-17 10:12:18,572 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1473 transitions. [2022-10-17 10:12:18,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1473 transitions. [2022-10-17 10:12:18,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:12:18,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1473 transitions. [2022-10-17 10:12:18,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 113.3076923076923) internal successors, (1473), 13 states have internal predecessors, (1473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:12:18,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 134.0) internal successors, (1876), 14 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:12:18,594 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 134.0) internal successors, (1876), 14 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:12:18,594 INFO L175 Difference]: Start difference. First operand has 156 places, 127 transitions, 523 flow. Second operand 13 states and 1473 transitions. [2022-10-17 10:12:18,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 234 transitions, 1807 flow [2022-10-17 10:12:18,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 234 transitions, 1723 flow, removed 42 selfloop flow, removed 9 redundant places. [2022-10-17 10:12:18,645 INFO L231 Difference]: Finished difference. Result has 162 places, 141 transitions, 816 flow [2022-10-17 10:12:18,646 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=816, PETRI_PLACES=162, PETRI_TRANSITIONS=141} [2022-10-17 10:12:18,647 INFO L287 CegarLoopForPetriNet]: 141 programPoint places, 21 predicate places. [2022-10-17 10:12:18,647 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 141 transitions, 816 flow [2022-10-17 10:12:18,648 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) [2022-10-17 10:12:18,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:12:18,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:12:18,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:12:18,649 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:12:18,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:12:18,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1825135120, now seen corresponding path program 1 times [2022-10-17 10:12:18,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:12:18,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977397641] [2022-10-17 10:12:18,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:12:18,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:12:18,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:12:19,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:12:19,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:12:19,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977397641] [2022-10-17 10:12:19,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977397641] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:12:19,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:12:19,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:12:19,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913628897] [2022-10-17 10:12:19,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:12:19,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:12:19,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:12:19,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:12:19,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:12:19,035 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 134 [2022-10-17 10:12:19,036 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 141 transitions, 816 flow. Second operand has 7 states, 7 states have (on average 106.85714285714286) internal successors, (748), 7 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:12:19,036 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:12:19,036 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 134 [2022-10-17 10:12:19,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:12:20,639 INFO L130 PetriNetUnfolder]: 1500/3774 cut-off events. [2022-10-17 10:12:20,639 INFO L131 PetriNetUnfolder]: For 22083/22095 co-relation queries the response was YES. [2022-10-17 10:12:20,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16239 conditions, 3774 events. 1500/3774 cut-off events. For 22083/22095 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 31037 event pairs, 331 based on Foata normal form. 57/3644 useless extension candidates. Maximal degree in co-relation 16142. Up to 945 conditions per place. [2022-10-17 10:12:20,712 INFO L137 encePairwiseOnDemand]: 120/134 looper letters, 47 selfloop transitions, 33 changer transitions 59/226 dead transitions. [2022-10-17 10:12:20,712 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 226 transitions, 1947 flow [2022-10-17 10:12:20,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-17 10:12:20,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-10-17 10:12:20,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1456 transitions. [2022-10-17 10:12:20,718 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.835820895522388 [2022-10-17 10:12:20,718 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1456 transitions. [2022-10-17 10:12:20,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1456 transitions. [2022-10-17 10:12:20,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:12:20,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1456 transitions. [2022-10-17 10:12:20,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 112.0) internal successors, (1456), 13 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:12:20,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 134.0) internal successors, (1876), 14 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:12:20,731 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 134.0) internal successors, (1876), 14 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:12:20,731 INFO L175 Difference]: Start difference. First operand has 162 places, 141 transitions, 816 flow. Second operand 13 states and 1456 transitions. [2022-10-17 10:12:20,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 226 transitions, 1947 flow [2022-10-17 10:12:20,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 226 transitions, 1879 flow, removed 34 selfloop flow, removed 0 redundant places. [2022-10-17 10:12:20,803 INFO L231 Difference]: Finished difference. Result has 177 places, 147 transitions, 1060 flow [2022-10-17 10:12:20,804 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=802, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1060, PETRI_PLACES=177, PETRI_TRANSITIONS=147} [2022-10-17 10:12:20,804 INFO L287 CegarLoopForPetriNet]: 141 programPoint places, 36 predicate places. [2022-10-17 10:12:20,805 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 147 transitions, 1060 flow [2022-10-17 10:12:20,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.85714285714286) internal successors, (748), 7 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:12:20,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:12:20,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:12:20,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:12:20,806 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:12:20,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:12:20,806 INFO L85 PathProgramCache]: Analyzing trace with hash 893190095, now seen corresponding path program 1 times [2022-10-17 10:12:20,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:12:20,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322317822] [2022-10-17 10:12:20,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:12:20,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:12:20,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:12:21,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:12:21,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:12:21,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322317822] [2022-10-17 10:12:21,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322317822] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:12:21,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:12:21,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:12:21,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496157375] [2022-10-17 10:12:21,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:12:21,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:12:21,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:12:21,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:12:21,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:12:21,260 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 134 [2022-10-17 10:12:21,261 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 147 transitions, 1060 flow. Second operand has 6 states, 6 states have (on average 111.33333333333333) internal successors, (668), 6 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:12:21,261 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:12:21,262 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 134 [2022-10-17 10:12:21,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:12:28,246 INFO L130 PetriNetUnfolder]: 11568/20576 cut-off events. [2022-10-17 10:12:28,246 INFO L131 PetriNetUnfolder]: For 101834/123403 co-relation queries the response was YES. [2022-10-17 10:12:28,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65507 conditions, 20576 events. 11568/20576 cut-off events. For 101834/123403 co-relation queries the response was YES. Maximal size of possible extension queue 1479. Compared 182359 event pairs, 602 based on Foata normal form. 656/19799 useless extension candidates. Maximal degree in co-relation 65425. Up to 7116 conditions per place. [2022-10-17 10:12:28,555 INFO L137 encePairwiseOnDemand]: 123/134 looper letters, 98 selfloop transitions, 20 changer transitions 22/259 dead transitions. [2022-10-17 10:12:28,555 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 259 transitions, 2386 flow [2022-10-17 10:12:28,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:12:28,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-10-17 10:12:28,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1181 transitions. [2022-10-17 10:12:28,561 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8813432835820896 [2022-10-17 10:12:28,562 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1181 transitions. [2022-10-17 10:12:28,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1181 transitions. [2022-10-17 10:12:28,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:12:28,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1181 transitions. [2022-10-17 10:12:28,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 118.1) internal successors, (1181), 10 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:12:28,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 134.0) internal successors, (1474), 11 states have internal predecessors, (1474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:12:28,574 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 134.0) internal successors, (1474), 11 states have internal predecessors, (1474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:12:28,575 INFO L175 Difference]: Start difference. First operand has 177 places, 147 transitions, 1060 flow. Second operand 10 states and 1181 transitions. [2022-10-17 10:12:28,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 259 transitions, 2386 flow [2022-10-17 10:12:28,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 259 transitions, 2354 flow, removed 16 selfloop flow, removed 10 redundant places. [2022-10-17 10:12:28,711 INFO L231 Difference]: Finished difference. Result has 173 places, 165 transitions, 1171 flow [2022-10-17 10:12:28,712 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=1028, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1171, PETRI_PLACES=173, PETRI_TRANSITIONS=165} [2022-10-17 10:12:28,716 INFO L287 CegarLoopForPetriNet]: 141 programPoint places, 32 predicate places. [2022-10-17 10:12:28,716 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 165 transitions, 1171 flow [2022-10-17 10:12:28,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 111.33333333333333) internal successors, (668), 6 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:12:28,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:12:28,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:12:28,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 10:12:28,718 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:12:28,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:12:28,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1582315728, now seen corresponding path program 1 times [2022-10-17 10:12:28,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:12:28,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378113812] [2022-10-17 10:12:28,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:12:28,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:12:28,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:12:29,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:12:29,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:12:29,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378113812] [2022-10-17 10:12:29,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378113812] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:12:29,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:12:29,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:12:29,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114667771] [2022-10-17 10:12:29,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:12:29,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:12:29,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:12:29,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:12:29,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:12:29,130 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 134 [2022-10-17 10:12:29,131 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 165 transitions, 1171 flow. Second operand has 7 states, 7 states have (on average 106.85714285714286) internal successors, (748), 7 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:12:29,131 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:12:29,131 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 134 [2022-10-17 10:12:29,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:12:32,815 INFO L130 PetriNetUnfolder]: 3838/12187 cut-off events. [2022-10-17 10:12:32,816 INFO L131 PetriNetUnfolder]: For 45585/48397 co-relation queries the response was YES. [2022-10-17 10:12:32,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42302 conditions, 12187 events. 3838/12187 cut-off events. For 45585/48397 co-relation queries the response was YES. Maximal size of possible extension queue 910. Compared 147523 event pairs, 1256 based on Foata normal form. 245/11314 useless extension candidates. Maximal degree in co-relation 42188. Up to 3364 conditions per place. [2022-10-17 10:12:33,049 INFO L137 encePairwiseOnDemand]: 120/134 looper letters, 95 selfloop transitions, 48 changer transitions 0/248 dead transitions. [2022-10-17 10:12:33,050 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 248 transitions, 2409 flow [2022-10-17 10:12:33,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-17 10:12:33,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-10-17 10:12:33,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1457 transitions. [2022-10-17 10:12:33,058 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8363949483352469 [2022-10-17 10:12:33,058 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1457 transitions. [2022-10-17 10:12:33,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1457 transitions. [2022-10-17 10:12:33,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:12:33,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1457 transitions. [2022-10-17 10:12:33,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 112.07692307692308) internal successors, (1457), 13 states have internal predecessors, (1457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:12:33,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 134.0) internal successors, (1876), 14 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:12:33,073 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 134.0) internal successors, (1876), 14 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:12:33,073 INFO L175 Difference]: Start difference. First operand has 173 places, 165 transitions, 1171 flow. Second operand 13 states and 1457 transitions. [2022-10-17 10:12:33,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 248 transitions, 2409 flow [2022-10-17 10:12:33,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 248 transitions, 2324 flow, removed 14 selfloop flow, removed 4 redundant places. [2022-10-17 10:12:33,355 INFO L231 Difference]: Finished difference. Result has 193 places, 191 transitions, 1788 flow [2022-10-17 10:12:33,355 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=1131, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1788, PETRI_PLACES=193, PETRI_TRANSITIONS=191} [2022-10-17 10:12:33,356 INFO L287 CegarLoopForPetriNet]: 141 programPoint places, 52 predicate places. [2022-10-17 10:12:33,357 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 191 transitions, 1788 flow [2022-10-17 10:12:33,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.85714285714286) internal successors, (748), 7 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:12:33,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:12:33,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:12:33,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 10:12:33,358 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:12:33,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:12:33,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1110022320, now seen corresponding path program 1 times [2022-10-17 10:12:33,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:12:33,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542096827] [2022-10-17 10:12:33,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:12:33,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:12:33,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:12:33,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:12:33,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:12:33,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542096827] [2022-10-17 10:12:33,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542096827] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:12:33,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:12:33,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:12:33,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936657556] [2022-10-17 10:12:33,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:12:33,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:12:33,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:12:33,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:12:33,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:12:33,817 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 134 [2022-10-17 10:12:33,819 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 191 transitions, 1788 flow. Second operand has 7 states, 7 states have (on average 111.14285714285714) internal successors, (778), 7 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:12:33,819 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:12:33,819 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 134 [2022-10-17 10:12:33,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand