./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 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5104175d-dfc0-41c4-8c88-bc934376ec33/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5104175d-dfc0-41c4-8c88-bc934376ec33/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5104175d-dfc0-41c4-8c88-bc934376ec33/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5104175d-dfc0-41c4-8c88-bc934376ec33/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix021.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5104175d-dfc0-41c4-8c88-bc934376ec33/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5104175d-dfc0-41c4-8c88-bc934376ec33/bin/uautomizer-verify-zZY32mL2XJ --witnessprinter.witness.filename witness --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 --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:42:59,240 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:42:59,409 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5104175d-dfc0-41c4-8c88-bc934376ec33/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-23 21:42:59,423 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:42:59,425 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:42:59,481 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:42:59,482 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:42:59,483 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:42:59,484 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 21:42:59,491 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 21:42:59,491 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:42:59,493 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:42:59,494 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 21:42:59,496 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 21:42:59,497 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 21:42:59,498 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:42:59,498 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:42:59,499 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:42:59,499 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:42:59,500 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:42:59,501 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:42:59,501 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:42:59,502 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:42:59,502 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:42:59,503 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:42:59,504 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:42:59,504 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:42:59,505 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:42:59,506 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:42:59,507 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:42:59,508 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:42:59,509 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:42:59,509 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:42:59,509 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:42:59,510 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:42:59,510 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 21:42:59,510 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:42:59,511 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:42:59,511 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 21:42:59,511 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:42:59,512 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 21:42:59,512 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:42:59,513 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5104175d-dfc0-41c4-8c88-bc934376ec33/bin/uautomizer-verify-zZY32mL2XJ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5104175d-dfc0-41c4-8c88-bc934376ec33/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 576d0750cd121d18ae295ddde1dd1649436f79f5ff3834655e4b6c15fd1260db [2023-11-23 21:42:59,848 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:42:59,891 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:42:59,895 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:42:59,897 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:42:59,898 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:42:59,899 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5104175d-dfc0-41c4-8c88-bc934376ec33/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/pthread-wmm/mix021.opt.i [2023-11-23 21:43:03,595 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:43:03,951 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:43:03,952 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5104175d-dfc0-41c4-8c88-bc934376ec33/sv-benchmarks/c/pthread-wmm/mix021.opt.i [2023-11-23 21:43:03,981 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5104175d-dfc0-41c4-8c88-bc934376ec33/bin/uautomizer-verify-zZY32mL2XJ/data/24fa78506/8deb8276cf964a53895545d89ea2a34f/FLAGd9bfc2a1f [2023-11-23 21:43:03,999 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5104175d-dfc0-41c4-8c88-bc934376ec33/bin/uautomizer-verify-zZY32mL2XJ/data/24fa78506/8deb8276cf964a53895545d89ea2a34f [2023-11-23 21:43:04,003 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:43:04,005 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:43:04,007 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:43:04,007 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:43:04,025 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:43:04,026 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:43:04" (1/1) ... [2023-11-23 21:43:04,027 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36460b53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:43:04, skipping insertion in model container [2023-11-23 21:43:04,028 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:43:04" (1/1) ... [2023-11-23 21:43:04,120 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:43:04,359 WARN L240 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_5104175d-dfc0-41c4-8c88-bc934376ec33/sv-benchmarks/c/pthread-wmm/mix021.opt.i[944,957] [2023-11-23 21:43:04,684 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:43:04,706 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:43:04,725 WARN L240 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_5104175d-dfc0-41c4-8c88-bc934376ec33/sv-benchmarks/c/pthread-wmm/mix021.opt.i[944,957] [2023-11-23 21:43:04,813 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:43:04,865 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:43:04,866 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:43:04,876 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:43:04,876 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:43:04 WrapperNode [2023-11-23 21:43:04,877 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:43:04,878 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:43:04,879 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:43:04,879 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:43:04,889 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:43:04" (1/1) ... [2023-11-23 21:43:04,909 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:43:04" (1/1) ... [2023-11-23 21:43:04,946 INFO L138 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 163 [2023-11-23 21:43:04,947 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:43:04,948 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:43:04,948 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:43:04,948 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:43:04,961 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:43:04" (1/1) ... [2023-11-23 21:43:04,961 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:43:04" (1/1) ... [2023-11-23 21:43:04,966 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:43:04" (1/1) ... [2023-11-23 21:43:04,986 INFO L189 HeapSplitter]: Split 6 memory accesses to 5 slices as follows [2, 1, 1, 1, 1] [2023-11-23 21:43:04,986 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:43:04" (1/1) ... [2023-11-23 21:43:04,987 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:43:04" (1/1) ... [2023-11-23 21:43:05,002 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:43:04" (1/1) ... [2023-11-23 21:43:05,004 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:43:04" (1/1) ... [2023-11-23 21:43:05,008 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:43:04" (1/1) ... [2023-11-23 21:43:05,011 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:43:04" (1/1) ... [2023-11-23 21:43:05,016 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:43:05,017 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:43:05,017 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:43:05,018 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:43:05,018 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:43:04" (1/1) ... [2023-11-23 21:43:05,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:43:05,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5104175d-dfc0-41c4-8c88-bc934376ec33/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:43:05,058 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5104175d-dfc0-41c4-8c88-bc934376ec33/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:43:05,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5104175d-dfc0-41c4-8c88-bc934376ec33/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:43:05,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 21:43:05,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 21:43:05,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 21:43:05,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-23 21:43:05,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-23 21:43:05,130 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-23 21:43:05,131 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:43:05,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:43:05,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:43:05,132 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-23 21:43:05,132 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-23 21:43:05,132 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-23 21:43:05,132 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-23 21:43:05,133 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-23 21:43:05,133 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-23 21:43:05,133 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-23 21:43:05,134 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-23 21:43:05,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 21:43:05,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 21:43:05,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 21:43:05,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-23 21:43:05,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-23 21:43:05,147 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-23 21:43:05,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:43:05,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:43:05,150 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-23 21:43:05,432 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:43:05,437 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:43:05,907 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:43:06,239 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:43:06,244 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 21:43:06,245 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:43:06 BoogieIcfgContainer [2023-11-23 21:43:06,246 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:43:06,250 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:43:06,250 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:43:06,255 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:43:06,255 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:43:04" (1/3) ... [2023-11-23 21:43:06,256 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70b51dc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:43:06, skipping insertion in model container [2023-11-23 21:43:06,257 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:43:04" (2/3) ... [2023-11-23 21:43:06,259 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70b51dc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:43:06, skipping insertion in model container [2023-11-23 21:43:06,259 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:43:06" (3/3) ... [2023-11-23 21:43:06,261 INFO L112 eAbstractionObserver]: Analyzing ICFG mix021.opt.i [2023-11-23 21:43:06,276 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-23 21:43:06,291 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:43:06,291 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-23 21:43:06,291 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-23 21:43:06,375 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-23 21:43:06,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 49 transitions, 114 flow [2023-11-23 21:43:06,506 INFO L124 PetriNetUnfolderBase]: 1/45 cut-off events. [2023-11-23 21:43:06,506 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-23 21:43:06,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 45 events. 1/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 86 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 49. Up to 2 conditions per place. [2023-11-23 21:43:06,515 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 49 transitions, 114 flow [2023-11-23 21:43:06,530 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 45 transitions, 102 flow [2023-11-23 21:43:06,550 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:43:06,558 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=LoopHeads, 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;@1b11cfaa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:43:06,559 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-23 21:43:06,599 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-23 21:43:06,600 INFO L124 PetriNetUnfolderBase]: 0/26 cut-off events. [2023-11-23 21:43:06,600 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-23 21:43:06,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:43:06,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:43:06,602 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-23 21:43:06,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:43:06,610 INFO L85 PathProgramCache]: Analyzing trace with hash -677850650, now seen corresponding path program 1 times [2023-11-23 21:43:06,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:43:06,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241702801] [2023-11-23 21:43:06,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:43:06,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:43:06,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:43:07,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:43:07,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:43:07,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241702801] [2023-11-23 21:43:07,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241702801] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:43:07,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:43:07,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 21:43:07,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140102913] [2023-11-23 21:43:07,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:43:07,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:43:07,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:43:07,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:43:07,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:43:07,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 49 [2023-11-23 21:43:07,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 45 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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) [2023-11-23 21:43:07,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:43:07,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 49 [2023-11-23 21:43:07,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:43:08,130 INFO L124 PetriNetUnfolderBase]: 879/1523 cut-off events. [2023-11-23 21:43:08,131 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-23 21:43:08,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2843 conditions, 1523 events. 879/1523 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 10470 event pairs, 159 based on Foata normal form. 60/1534 useless extension candidates. Maximal degree in co-relation 2831. Up to 1009 conditions per place. [2023-11-23 21:43:08,163 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 26 selfloop transitions, 2 changer transitions 2/52 dead transitions. [2023-11-23 21:43:08,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 52 transitions, 176 flow [2023-11-23 21:43:08,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:43:08,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 21:43:08,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 111 transitions. [2023-11-23 21:43:08,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7551020408163265 [2023-11-23 21:43:08,187 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 111 transitions. [2023-11-23 21:43:08,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 111 transitions. [2023-11-23 21:43:08,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:43:08,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 111 transitions. [2023-11-23 21:43:08,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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) [2023-11-23 21:43:08,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 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) [2023-11-23 21:43:08,204 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 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) [2023-11-23 21:43:08,207 INFO L175 Difference]: Start difference. First operand has 57 places, 45 transitions, 102 flow. Second operand 3 states and 111 transitions. [2023-11-23 21:43:08,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 52 transitions, 176 flow [2023-11-23 21:43:08,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 52 transitions, 172 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-23 21:43:08,223 INFO L231 Difference]: Finished difference. Result has 54 places, 42 transitions, 96 flow [2023-11-23 21:43:08,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=54, PETRI_TRANSITIONS=42} [2023-11-23 21:43:08,234 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -3 predicate places. [2023-11-23 21:43:08,234 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 42 transitions, 96 flow [2023-11-23 21:43:08,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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) [2023-11-23 21:43:08,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:43:08,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:43:08,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:43:08,236 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)] === [2023-11-23 21:43:08,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:43:08,237 INFO L85 PathProgramCache]: Analyzing trace with hash -539713762, now seen corresponding path program 1 times [2023-11-23 21:43:08,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:43:08,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276680246] [2023-11-23 21:43:08,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:43:08,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:43:08,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:43:08,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:43:08,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:43:08,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276680246] [2023-11-23 21:43:08,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276680246] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:43:08,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:43:08,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:43:08,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795358279] [2023-11-23 21:43:08,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:43:08,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:43:08,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:43:08,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:43:08,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:43:08,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 49 [2023-11-23 21:43:08,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 96 flow. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 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) [2023-11-23 21:43:08,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:43:08,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 49 [2023-11-23 21:43:08,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:43:13,068 INFO L124 PetriNetUnfolderBase]: 15819/23779 cut-off events. [2023-11-23 21:43:13,069 INFO L125 PetriNetUnfolderBase]: For 868/868 co-relation queries the response was YES. [2023-11-23 21:43:13,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46469 conditions, 23779 events. 15819/23779 cut-off events. For 868/868 co-relation queries the response was YES. Maximal size of possible extension queue 1403. Compared 182345 event pairs, 3610 based on Foata normal form. 0/23070 useless extension candidates. Maximal degree in co-relation 46459. Up to 8109 conditions per place. [2023-11-23 21:43:13,311 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 41 selfloop transitions, 8 changer transitions 85/148 dead transitions. [2023-11-23 21:43:13,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 148 transitions, 594 flow [2023-11-23 21:43:13,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 21:43:13,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-23 21:43:13,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 298 transitions. [2023-11-23 21:43:13,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6757369614512472 [2023-11-23 21:43:13,329 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 298 transitions. [2023-11-23 21:43:13,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 298 transitions. [2023-11-23 21:43:13,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:43:13,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 298 transitions. [2023-11-23 21:43:13,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.111111111111114) internal successors, (298), 9 states have internal predecessors, (298), 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) [2023-11-23 21:43:13,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 49.0) internal successors, (490), 10 states have internal predecessors, (490), 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) [2023-11-23 21:43:13,344 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 49.0) internal successors, (490), 10 states have internal predecessors, (490), 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) [2023-11-23 21:43:13,345 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 96 flow. Second operand 9 states and 298 transitions. [2023-11-23 21:43:13,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 148 transitions, 594 flow [2023-11-23 21:43:13,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 148 transitions, 576 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-23 21:43:13,394 INFO L231 Difference]: Finished difference. Result has 67 places, 48 transitions, 202 flow [2023-11-23 21:43:13,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=202, PETRI_PLACES=67, PETRI_TRANSITIONS=48} [2023-11-23 21:43:13,396 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 10 predicate places. [2023-11-23 21:43:13,396 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 48 transitions, 202 flow [2023-11-23 21:43:13,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 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) [2023-11-23 21:43:13,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:43:13,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:43:13,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:43:13,398 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)] === [2023-11-23 21:43:13,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:43:13,399 INFO L85 PathProgramCache]: Analyzing trace with hash -764220835, now seen corresponding path program 1 times [2023-11-23 21:43:13,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:43:13,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004781626] [2023-11-23 21:43:13,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:43:13,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:43:13,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:43:13,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:43:13,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:43:13,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004781626] [2023-11-23 21:43:13,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004781626] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:43:13,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:43:13,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:43:13,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880937514] [2023-11-23 21:43:13,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:43:13,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:43:13,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:43:13,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:43:13,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:43:13,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 49 [2023-11-23 21:43:13,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 48 transitions, 202 flow. Second operand has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 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) [2023-11-23 21:43:13,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:43:13,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 49 [2023-11-23 21:43:13,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:43:17,382 INFO L124 PetriNetUnfolderBase]: 11755/19099 cut-off events. [2023-11-23 21:43:17,382 INFO L125 PetriNetUnfolderBase]: For 29468/29474 co-relation queries the response was YES. [2023-11-23 21:43:17,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58191 conditions, 19099 events. 11755/19099 cut-off events. For 29468/29474 co-relation queries the response was YES. Maximal size of possible extension queue 1109. Compared 155306 event pairs, 1058 based on Foata normal form. 482/19459 useless extension candidates. Maximal degree in co-relation 58173. Up to 7211 conditions per place. [2023-11-23 21:43:17,561 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 58 selfloop transitions, 12 changer transitions 86/170 dead transitions. [2023-11-23 21:43:17,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 170 transitions, 1154 flow [2023-11-23 21:43:17,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 21:43:17,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-23 21:43:17,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 323 transitions. [2023-11-23 21:43:17,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6591836734693878 [2023-11-23 21:43:17,564 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 323 transitions. [2023-11-23 21:43:17,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 323 transitions. [2023-11-23 21:43:17,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:43:17,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 323 transitions. [2023-11-23 21:43:17,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 32.3) internal successors, (323), 10 states have internal predecessors, (323), 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) [2023-11-23 21:43:17,568 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 49.0) internal successors, (539), 11 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:43:17,569 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 49.0) internal successors, (539), 11 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:43:17,569 INFO L175 Difference]: Start difference. First operand has 67 places, 48 transitions, 202 flow. Second operand 10 states and 323 transitions. [2023-11-23 21:43:17,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 170 transitions, 1154 flow [2023-11-23 21:43:17,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 170 transitions, 1000 flow, removed 37 selfloop flow, removed 4 redundant places. [2023-11-23 21:43:17,783 INFO L231 Difference]: Finished difference. Result has 74 places, 56 transitions, 310 flow [2023-11-23 21:43:17,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=310, PETRI_PLACES=74, PETRI_TRANSITIONS=56} [2023-11-23 21:43:17,785 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 17 predicate places. [2023-11-23 21:43:17,785 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 56 transitions, 310 flow [2023-11-23 21:43:17,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 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) [2023-11-23 21:43:17,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:43:17,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:43:17,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:43:17,786 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)] === [2023-11-23 21:43:17,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:43:17,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1430937011, now seen corresponding path program 1 times [2023-11-23 21:43:17,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:43:17,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761269225] [2023-11-23 21:43:17,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:43:17,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:43:17,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:43:18,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:43:18,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:43:18,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761269225] [2023-11-23 21:43:18,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761269225] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:43:18,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:43:18,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:43:18,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865738862] [2023-11-23 21:43:18,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:43:18,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:43:18,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:43:18,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:43:18,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:43:18,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 49 [2023-11-23 21:43:18,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 56 transitions, 310 flow. Second operand has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 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) [2023-11-23 21:43:18,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:43:18,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 49 [2023-11-23 21:43:18,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:43:21,258 INFO L124 PetriNetUnfolderBase]: 10758/16879 cut-off events. [2023-11-23 21:43:21,258 INFO L125 PetriNetUnfolderBase]: For 49863/49863 co-relation queries the response was YES. [2023-11-23 21:43:21,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58021 conditions, 16879 events. 10758/16879 cut-off events. For 49863/49863 co-relation queries the response was YES. Maximal size of possible extension queue 961. Compared 126971 event pairs, 2071 based on Foata normal form. 380/17152 useless extension candidates. Maximal degree in co-relation 57996. Up to 7010 conditions per place. [2023-11-23 21:43:21,405 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 62 selfloop transitions, 19 changer transitions 70/165 dead transitions. [2023-11-23 21:43:21,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 165 transitions, 1186 flow [2023-11-23 21:43:21,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 21:43:21,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-23 21:43:21,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 321 transitions. [2023-11-23 21:43:21,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6551020408163265 [2023-11-23 21:43:21,407 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 321 transitions. [2023-11-23 21:43:21,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 321 transitions. [2023-11-23 21:43:21,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:43:21,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 321 transitions. [2023-11-23 21:43:21,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 32.1) internal successors, (321), 10 states have internal predecessors, (321), 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) [2023-11-23 21:43:21,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 49.0) internal successors, (539), 11 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:43:21,411 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 49.0) internal successors, (539), 11 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:43:21,411 INFO L175 Difference]: Start difference. First operand has 74 places, 56 transitions, 310 flow. Second operand 10 states and 321 transitions. [2023-11-23 21:43:21,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 165 transitions, 1186 flow [2023-11-23 21:43:21,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 165 transitions, 1158 flow, removed 14 selfloop flow, removed 0 redundant places. [2023-11-23 21:43:21,779 INFO L231 Difference]: Finished difference. Result has 85 places, 63 transitions, 450 flow [2023-11-23 21:43:21,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=450, PETRI_PLACES=85, PETRI_TRANSITIONS=63} [2023-11-23 21:43:21,780 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 28 predicate places. [2023-11-23 21:43:21,780 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 63 transitions, 450 flow [2023-11-23 21:43:21,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 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) [2023-11-23 21:43:21,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:43:21,781 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] [2023-11-23 21:43:21,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 21:43:21,781 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)] === [2023-11-23 21:43:21,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:43:21,781 INFO L85 PathProgramCache]: Analyzing trace with hash 909444382, now seen corresponding path program 1 times [2023-11-23 21:43:21,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:43:21,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022252850] [2023-11-23 21:43:21,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:43:21,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:43:21,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:43:22,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:43:22,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:43:22,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022252850] [2023-11-23 21:43:22,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022252850] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:43:22,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:43:22,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:43:22,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299822991] [2023-11-23 21:43:22,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:43:22,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:43:22,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:43:22,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:43:22,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:43:22,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 49 [2023-11-23 21:43:22,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 63 transitions, 450 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 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) [2023-11-23 21:43:22,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:43:22,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 49 [2023-11-23 21:43:22,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:43:24,880 INFO L124 PetriNetUnfolderBase]: 9634/15488 cut-off events. [2023-11-23 21:43:24,880 INFO L125 PetriNetUnfolderBase]: For 68667/68691 co-relation queries the response was YES. [2023-11-23 21:43:24,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58571 conditions, 15488 events. 9634/15488 cut-off events. For 68667/68691 co-relation queries the response was YES. Maximal size of possible extension queue 854. Compared 120102 event pairs, 1738 based on Foata normal form. 351/15741 useless extension candidates. Maximal degree in co-relation 58536. Up to 5064 conditions per place. [2023-11-23 21:43:25,046 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 64 selfloop transitions, 18 changer transitions 68/164 dead transitions. [2023-11-23 21:43:25,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 164 transitions, 1500 flow [2023-11-23 21:43:25,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 21:43:25,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-23 21:43:25,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 297 transitions. [2023-11-23 21:43:25,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6061224489795919 [2023-11-23 21:43:25,049 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 297 transitions. [2023-11-23 21:43:25,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 297 transitions. [2023-11-23 21:43:25,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:43:25,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 297 transitions. [2023-11-23 21:43:25,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 29.7) internal successors, (297), 10 states have internal predecessors, (297), 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) [2023-11-23 21:43:25,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 49.0) internal successors, (539), 11 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:43:25,054 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 49.0) internal successors, (539), 11 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:43:25,054 INFO L175 Difference]: Start difference. First operand has 85 places, 63 transitions, 450 flow. Second operand 10 states and 297 transitions. [2023-11-23 21:43:25,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 164 transitions, 1500 flow [2023-11-23 21:43:25,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 164 transitions, 1394 flow, removed 53 selfloop flow, removed 10 redundant places. [2023-11-23 21:43:25,784 INFO L231 Difference]: Finished difference. Result has 87 places, 73 transitions, 627 flow [2023-11-23 21:43:25,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=627, PETRI_PLACES=87, PETRI_TRANSITIONS=73} [2023-11-23 21:43:25,810 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 30 predicate places. [2023-11-23 21:43:25,810 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 73 transitions, 627 flow [2023-11-23 21:43:25,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 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) [2023-11-23 21:43:25,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:43:25,811 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] [2023-11-23 21:43:25,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 21:43:25,811 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)] === [2023-11-23 21:43:25,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:43:25,813 INFO L85 PathProgramCache]: Analyzing trace with hash -344229288, now seen corresponding path program 1 times [2023-11-23 21:43:25,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:43:25,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317407921] [2023-11-23 21:43:25,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:43:25,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:43:25,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:43:26,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:43:26,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:43:26,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317407921] [2023-11-23 21:43:26,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317407921] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:43:26,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:43:26,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 21:43:26,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534937142] [2023-11-23 21:43:26,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:43:26,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:43:26,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:43:26,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:43:26,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:43:26,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 49 [2023-11-23 21:43:26,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 73 transitions, 627 flow. Second operand has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 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) [2023-11-23 21:43:26,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:43:26,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 49 [2023-11-23 21:43:26,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:43:29,422 INFO L124 PetriNetUnfolderBase]: 11277/18321 cut-off events. [2023-11-23 21:43:29,423 INFO L125 PetriNetUnfolderBase]: For 93124/93124 co-relation queries the response was YES. [2023-11-23 21:43:29,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70662 conditions, 18321 events. 11277/18321 cut-off events. For 93124/93124 co-relation queries the response was YES. Maximal size of possible extension queue 999. Compared 149950 event pairs, 2039 based on Foata normal form. 280/18363 useless extension candidates. Maximal degree in co-relation 70626. Up to 5694 conditions per place. [2023-11-23 21:43:29,599 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 63 selfloop transitions, 31 changer transitions 62/170 dead transitions. [2023-11-23 21:43:29,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 170 transitions, 1591 flow [2023-11-23 21:43:29,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 21:43:29,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-23 21:43:29,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 304 transitions. [2023-11-23 21:43:29,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6204081632653061 [2023-11-23 21:43:29,603 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 304 transitions. [2023-11-23 21:43:29,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 304 transitions. [2023-11-23 21:43:29,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:43:29,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 304 transitions. [2023-11-23 21:43:29,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.4) internal successors, (304), 10 states have internal predecessors, (304), 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) [2023-11-23 21:43:29,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 49.0) internal successors, (539), 11 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:43:29,609 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 49.0) internal successors, (539), 11 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:43:29,610 INFO L175 Difference]: Start difference. First operand has 87 places, 73 transitions, 627 flow. Second operand 10 states and 304 transitions. [2023-11-23 21:43:29,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 170 transitions, 1591 flow [2023-11-23 21:43:30,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 170 transitions, 1520 flow, removed 32 selfloop flow, removed 3 redundant places. [2023-11-23 21:43:30,239 INFO L231 Difference]: Finished difference. Result has 96 places, 76 transitions, 804 flow [2023-11-23 21:43:30,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=604, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=804, PETRI_PLACES=96, PETRI_TRANSITIONS=76} [2023-11-23 21:43:30,240 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 39 predicate places. [2023-11-23 21:43:30,240 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 76 transitions, 804 flow [2023-11-23 21:43:30,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 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) [2023-11-23 21:43:30,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:43:30,241 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] [2023-11-23 21:43:30,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 21:43:30,241 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)] === [2023-11-23 21:43:30,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:43:30,242 INFO L85 PathProgramCache]: Analyzing trace with hash -421545439, now seen corresponding path program 1 times [2023-11-23 21:43:30,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:43:30,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393318677] [2023-11-23 21:43:30,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:43:30,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:43:30,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:43:30,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:43:30,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:43:30,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393318677] [2023-11-23 21:43:30,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393318677] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:43:30,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:43:30,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:43:30,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164620282] [2023-11-23 21:43:30,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:43:30,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:43:30,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:43:30,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:43:30,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:43:30,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 49 [2023-11-23 21:43:30,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 76 transitions, 804 flow. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 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) [2023-11-23 21:43:30,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:43:30,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 49 [2023-11-23 21:43:30,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:43:35,871 INFO L124 PetriNetUnfolderBase]: 23518/35706 cut-off events. [2023-11-23 21:43:35,871 INFO L125 PetriNetUnfolderBase]: For 130060/134608 co-relation queries the response was YES. [2023-11-23 21:43:36,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111129 conditions, 35706 events. 23518/35706 cut-off events. For 130060/134608 co-relation queries the response was YES. Maximal size of possible extension queue 1838. Compared 279233 event pairs, 4127 based on Foata normal form. 1853/36487 useless extension candidates. Maximal degree in co-relation 111085. Up to 18681 conditions per place. [2023-11-23 21:43:36,207 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 66 selfloop transitions, 6 changer transitions 0/116 dead transitions. [2023-11-23 21:43:36,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 116 transitions, 1262 flow [2023-11-23 21:43:36,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:43:36,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 21:43:36,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 139 transitions. [2023-11-23 21:43:36,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7091836734693877 [2023-11-23 21:43:36,209 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 139 transitions. [2023-11-23 21:43:36,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 139 transitions. [2023-11-23 21:43:36,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:43:36,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 139 transitions. [2023-11-23 21:43:36,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 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) [2023-11-23 21:43:36,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 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) [2023-11-23 21:43:36,215 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 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) [2023-11-23 21:43:36,215 INFO L175 Difference]: Start difference. First operand has 96 places, 76 transitions, 804 flow. Second operand 4 states and 139 transitions. [2023-11-23 21:43:36,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 116 transitions, 1262 flow [2023-11-23 21:43:36,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 116 transitions, 1234 flow, removed 14 selfloop flow, removed 7 redundant places. [2023-11-23 21:43:36,389 INFO L231 Difference]: Finished difference. Result has 88 places, 81 transitions, 830 flow [2023-11-23 21:43:36,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=784, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=830, PETRI_PLACES=88, PETRI_TRANSITIONS=81} [2023-11-23 21:43:36,391 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 31 predicate places. [2023-11-23 21:43:36,392 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 81 transitions, 830 flow [2023-11-23 21:43:36,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 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) [2023-11-23 21:43:36,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:43:36,392 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] [2023-11-23 21:43:36,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 21:43:36,393 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)] === [2023-11-23 21:43:36,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:43:36,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1965252350, now seen corresponding path program 1 times [2023-11-23 21:43:36,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:43:36,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014994498] [2023-11-23 21:43:36,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:43:36,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:43:36,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:43:36,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:43:36,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:43:36,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014994498] [2023-11-23 21:43:36,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014994498] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:43:36,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:43:36,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:43:36,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131792861] [2023-11-23 21:43:36,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:43:36,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:43:36,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:43:36,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:43:36,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:43:36,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 49 [2023-11-23 21:43:36,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 81 transitions, 830 flow. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 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) [2023-11-23 21:43:36,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:43:36,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 49 [2023-11-23 21:43:36,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:43:43,164 INFO L124 PetriNetUnfolderBase]: 24230/40433 cut-off events. [2023-11-23 21:43:43,164 INFO L125 PetriNetUnfolderBase]: For 160871/162892 co-relation queries the response was YES. [2023-11-23 21:43:43,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137030 conditions, 40433 events. 24230/40433 cut-off events. For 160871/162892 co-relation queries the response was YES. Maximal size of possible extension queue 2334. Compared 374202 event pairs, 11705 based on Foata normal form. 827/36676 useless extension candidates. Maximal degree in co-relation 136989. Up to 15146 conditions per place. [2023-11-23 21:43:43,543 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 75 selfloop transitions, 20 changer transitions 5/135 dead transitions. [2023-11-23 21:43:43,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 135 transitions, 1360 flow [2023-11-23 21:43:43,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 21:43:43,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-23 21:43:43,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 222 transitions. [2023-11-23 21:43:43,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6472303206997084 [2023-11-23 21:43:43,547 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 222 transitions. [2023-11-23 21:43:43,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 222 transitions. [2023-11-23 21:43:43,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:43:43,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 222 transitions. [2023-11-23 21:43:43,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 31.714285714285715) internal successors, (222), 7 states have internal predecessors, (222), 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) [2023-11-23 21:43:43,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 49.0) internal successors, (392), 8 states have internal predecessors, (392), 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) [2023-11-23 21:43:43,553 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 49.0) internal successors, (392), 8 states have internal predecessors, (392), 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) [2023-11-23 21:43:43,554 INFO L175 Difference]: Start difference. First operand has 88 places, 81 transitions, 830 flow. Second operand 7 states and 222 transitions. [2023-11-23 21:43:43,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 135 transitions, 1360 flow [2023-11-23 21:43:44,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 135 transitions, 1348 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-11-23 21:43:44,127 INFO L231 Difference]: Finished difference. Result has 97 places, 86 transitions, 951 flow [2023-11-23 21:43:44,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=824, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=951, PETRI_PLACES=97, PETRI_TRANSITIONS=86} [2023-11-23 21:43:44,128 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 40 predicate places. [2023-11-23 21:43:44,128 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 86 transitions, 951 flow [2023-11-23 21:43:44,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 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) [2023-11-23 21:43:44,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:43:44,129 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] [2023-11-23 21:43:44,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-23 21:43:44,130 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-23 21:43:44,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:43:44,130 INFO L85 PathProgramCache]: Analyzing trace with hash 879518192, now seen corresponding path program 1 times [2023-11-23 21:43:44,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:43:44,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535320170] [2023-11-23 21:43:44,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:43:44,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:43:44,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:43:44,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:43:44,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:43:44,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535320170] [2023-11-23 21:43:44,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535320170] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:43:44,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:43:44,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:43:44,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374760699] [2023-11-23 21:43:44,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:43:44,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:43:44,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:43:44,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:43:44,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:43:44,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 49 [2023-11-23 21:43:44,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 86 transitions, 951 flow. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 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) [2023-11-23 21:43:44,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:43:44,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 49 [2023-11-23 21:43:44,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand