./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d63d7d1-aa6e-4824-809a-02936f5e3210/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d63d7d1-aa6e-4824-809a-02936f5e3210/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_1d63d7d1-aa6e-4824-809a-02936f5e3210/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d63d7d1-aa6e-4824-809a-02936f5e3210/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d63d7d1-aa6e-4824-809a-02936f5e3210/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_1d63d7d1-aa6e-4824-809a-02936f5e3210/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 0f1f05cefb3bd84a08d6d936499ca6f215f6edf0bfbf58f9874b646b6408f7c8 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 22:42:45,791 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 22:42:45,893 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d63d7d1-aa6e-4824-809a-02936f5e3210/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-23 22:42:45,900 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 22:42:45,900 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 22:42:45,928 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 22:42:45,929 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 22:42:45,930 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 22:42:45,930 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 22:42:45,931 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 22:42:45,932 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 22:42:45,932 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 22:42:45,933 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 22:42:45,934 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 22:42:45,934 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 22:42:45,935 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 22:42:45,936 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 22:42:45,936 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 22:42:45,937 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 22:42:45,938 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 22:42:45,938 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 22:42:45,939 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 22:42:45,939 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 22:42:45,940 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 22:42:45,959 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 22:42:45,960 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 22:42:45,960 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 22:42:45,961 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 22:42:45,961 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 22:42:45,962 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 22:42:45,962 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 22:42:45,963 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:42:45,963 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 22:42:45,964 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 22:42:45,964 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 22:42:45,965 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 22:42:45,966 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 22:42:45,966 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 22:42:45,967 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 22:42:45,967 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 22:42:45,967 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 22:42:45,968 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 22:42:45,968 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_1d63d7d1-aa6e-4824-809a-02936f5e3210/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d63d7d1-aa6e-4824-809a-02936f5e3210/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f1f05cefb3bd84a08d6d936499ca6f215f6edf0bfbf58f9874b646b6408f7c8 [2023-11-23 22:42:46,239 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 22:42:46,266 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 22:42:46,270 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 22:42:46,271 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 22:42:46,272 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 22:42:46,273 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d63d7d1-aa6e-4824-809a-02936f5e3210/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c [2023-11-23 22:42:49,475 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 22:42:49,678 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 22:42:49,679 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d63d7d1-aa6e-4824-809a-02936f5e3210/sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c [2023-11-23 22:42:49,688 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d63d7d1-aa6e-4824-809a-02936f5e3210/bin/uautomizer-verify-zZY32mL2XJ/data/4946bbdad/c8fb6251ced24098b3ec86d910b8e2f8/FLAGdc8500605 [2023-11-23 22:42:49,706 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d63d7d1-aa6e-4824-809a-02936f5e3210/bin/uautomizer-verify-zZY32mL2XJ/data/4946bbdad/c8fb6251ced24098b3ec86d910b8e2f8 [2023-11-23 22:42:49,709 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 22:42:49,711 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 22:42:49,712 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 22:42:49,712 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 22:42:49,718 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 22:42:49,719 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:42:49" (1/1) ... [2023-11-23 22:42:49,720 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3de4ccc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:42:49, skipping insertion in model container [2023-11-23 22:42:49,721 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:42:49" (1/1) ... [2023-11-23 22:42:49,764 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 22:42:49,990 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_1d63d7d1-aa6e-4824-809a-02936f5e3210/sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c[5465,5478] [2023-11-23 22:42:49,997 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:42:50,007 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 22:42:50,041 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_1d63d7d1-aa6e-4824-809a-02936f5e3210/sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c[5465,5478] [2023-11-23 22:42:50,042 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:42:50,051 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:42:50,051 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:42:50,060 INFO L206 MainTranslator]: Completed translation [2023-11-23 22:42:50,060 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:42:50 WrapperNode [2023-11-23 22:42:50,061 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 22:42:50,062 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 22:42:50,062 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 22:42:50,062 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 22:42:50,071 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:42:50" (1/1) ... [2023-11-23 22:42:50,081 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:42:50" (1/1) ... [2023-11-23 22:42:50,118 INFO L138 Inliner]: procedures = 22, calls = 110, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 267 [2023-11-23 22:42:50,118 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 22:42:50,119 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 22:42:50,119 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 22:42:50,119 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 22:42:50,129 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:42:50" (1/1) ... [2023-11-23 22:42:50,130 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:42:50" (1/1) ... [2023-11-23 22:42:50,135 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:42:50" (1/1) ... [2023-11-23 22:42:50,151 INFO L189 HeapSplitter]: Split 8 memory accesses to 4 slices as follows [2, 2, 2, 2] [2023-11-23 22:42:50,152 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:42:50" (1/1) ... [2023-11-23 22:42:50,152 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:42:50" (1/1) ... [2023-11-23 22:42:50,162 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:42:50" (1/1) ... [2023-11-23 22:42:50,179 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:42:50" (1/1) ... [2023-11-23 22:42:50,181 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:42:50" (1/1) ... [2023-11-23 22:42:50,184 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:42:50" (1/1) ... [2023-11-23 22:42:50,203 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 22:42:50,204 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 22:42:50,205 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 22:42:50,205 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 22:42:50,206 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:42:50" (1/1) ... [2023-11-23 22:42:50,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:42:50,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d63d7d1-aa6e-4824-809a-02936f5e3210/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:42:50,248 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d63d7d1-aa6e-4824-809a-02936f5e3210/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 22:42:50,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d63d7d1-aa6e-4824-809a-02936f5e3210/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 22:42:50,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 22:42:50,281 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-23 22:42:50,281 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-23 22:42:50,281 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-23 22:42:50,281 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-23 22:42:50,281 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-23 22:42:50,282 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-23 22:42:50,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 22:42:50,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 22:42:50,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 22:42:50,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-23 22:42:50,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 22:42:50,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 22:42:50,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 22:42:50,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 22:42:50,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-23 22:42:50,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-23 22:42:50,284 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-23 22:42:50,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 22:42:50,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 22:42:50,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-23 22:42:50,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-23 22:42:50,285 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-23 22:42:50,285 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-23 22:42:50,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 22:42:50,287 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 22:42:50,405 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 22:42:50,407 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 22:42:50,780 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 22:42:51,259 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 22:42:51,260 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 22:42:51,260 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:42:51 BoogieIcfgContainer [2023-11-23 22:42:51,261 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 22:42:51,264 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 22:42:51,265 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 22:42:51,268 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 22:42:51,269 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:42:49" (1/3) ... [2023-11-23 22:42:51,269 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24263a93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:42:51, skipping insertion in model container [2023-11-23 22:42:51,270 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:42:50" (2/3) ... [2023-11-23 22:42:51,271 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24263a93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:42:51, skipping insertion in model container [2023-11-23 22:42:51,272 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:42:51" (3/3) ... [2023-11-23 22:42:51,273 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bakery-3.wvr.c [2023-11-23 22:42:51,285 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-23 22:42:51,298 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 22:42:51,298 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 22:42:51,299 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-23 22:42:51,373 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-23 22:42:51,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 60 transitions, 141 flow [2023-11-23 22:42:51,480 INFO L124 PetriNetUnfolderBase]: 0/57 cut-off events. [2023-11-23 22:42:51,482 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-23 22:42:51,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 57 events. 0/57 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 93 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-11-23 22:42:51,492 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 60 transitions, 141 flow [2023-11-23 22:42:51,497 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 56 transitions, 130 flow [2023-11-23 22:42:51,521 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 22:42:51,529 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;@561e9ea5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 22:42:51,530 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-23 22:42:51,556 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-23 22:42:51,556 INFO L124 PetriNetUnfolderBase]: 0/55 cut-off events. [2023-11-23 22:42:51,556 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-23 22:42:51,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:42:51,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:42:51,558 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-23 22:42:51,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:42:51,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1532729853, now seen corresponding path program 1 times [2023-11-23 22:42:51,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:42:51,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261294560] [2023-11-23 22:42:51,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:42:51,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:42:51,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:42:52,596 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 22:42:52,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:42:52,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261294560] [2023-11-23 22:42:52,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261294560] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:42:52,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:42:52,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 22:42:52,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865016860] [2023-11-23 22:42:52,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:42:52,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 22:42:52,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:42:52,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 22:42:52,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-23 22:42:52,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 60 [2023-11-23 22:42:52,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 56 transitions, 130 flow. Second operand has 9 states, 9 states have (on average 26.11111111111111) internal successors, (235), 9 states have internal predecessors, (235), 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 22:42:52,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:42:52,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 60 [2023-11-23 22:42:52,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:42:54,580 INFO L124 PetriNetUnfolderBase]: 4780/8088 cut-off events. [2023-11-23 22:42:54,581 INFO L125 PetriNetUnfolderBase]: For 459/459 co-relation queries the response was YES. [2023-11-23 22:42:54,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15836 conditions, 8088 events. 4780/8088 cut-off events. For 459/459 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 55899 event pairs, 1631 based on Foata normal form. 1/8000 useless extension candidates. Maximal degree in co-relation 13619. Up to 2389 conditions per place. [2023-11-23 22:42:54,666 INFO L140 encePairwiseOnDemand]: 52/60 looper letters, 153 selfloop transitions, 15 changer transitions 25/212 dead transitions. [2023-11-23 22:42:54,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 212 transitions, 900 flow [2023-11-23 22:42:54,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 22:42:54,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-23 22:42:54,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 436 transitions. [2023-11-23 22:42:54,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6606060606060606 [2023-11-23 22:42:54,692 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 436 transitions. [2023-11-23 22:42:54,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 436 transitions. [2023-11-23 22:42:54,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:42:54,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 436 transitions. [2023-11-23 22:42:54,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 39.63636363636363) internal successors, (436), 11 states have internal predecessors, (436), 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 22:42:54,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 60.0) internal successors, (720), 12 states have internal predecessors, (720), 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 22:42:54,716 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 60.0) internal successors, (720), 12 states have internal predecessors, (720), 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 22:42:54,718 INFO L175 Difference]: Start difference. First operand has 66 places, 56 transitions, 130 flow. Second operand 11 states and 436 transitions. [2023-11-23 22:42:54,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 212 transitions, 900 flow [2023-11-23 22:42:54,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 212 transitions, 840 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-23 22:42:54,741 INFO L231 Difference]: Finished difference. Result has 74 places, 72 transitions, 210 flow [2023-11-23 22:42:54,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=210, PETRI_PLACES=74, PETRI_TRANSITIONS=72} [2023-11-23 22:42:54,752 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 8 predicate places. [2023-11-23 22:42:54,752 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 72 transitions, 210 flow [2023-11-23 22:42:54,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 26.11111111111111) internal successors, (235), 9 states have internal predecessors, (235), 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 22:42:54,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:42:54,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:42:54,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 22:42:54,755 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-23 22:42:54,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:42:54,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1508694143, now seen corresponding path program 2 times [2023-11-23 22:42:54,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:42:54,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578883762] [2023-11-23 22:42:54,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:42:54,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:42:54,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:42:55,500 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 22:42:55,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:42:55,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578883762] [2023-11-23 22:42:55,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578883762] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:42:55,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:42:55,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 22:42:55,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692112568] [2023-11-23 22:42:55,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:42:55,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 22:42:55,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:42:55,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 22:42:55,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-23 22:42:55,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 60 [2023-11-23 22:42:55,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 72 transitions, 210 flow. Second operand has 8 states, 8 states have (on average 25.875) internal successors, (207), 8 states have internal predecessors, (207), 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 22:42:55,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:42:55,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 60 [2023-11-23 22:42:55,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:42:57,323 INFO L124 PetriNetUnfolderBase]: 7031/11640 cut-off events. [2023-11-23 22:42:57,323 INFO L125 PetriNetUnfolderBase]: For 138/140 co-relation queries the response was YES. [2023-11-23 22:42:57,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23341 conditions, 11640 events. 7031/11640 cut-off events. For 138/140 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 79884 event pairs, 2659 based on Foata normal form. 114/11464 useless extension candidates. Maximal degree in co-relation 23314. Up to 9151 conditions per place. [2023-11-23 22:42:57,418 INFO L140 encePairwiseOnDemand]: 51/60 looper letters, 101 selfloop transitions, 21 changer transitions 0/156 dead transitions. [2023-11-23 22:42:57,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 156 transitions, 628 flow [2023-11-23 22:42:57,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 22:42:57,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-23 22:42:57,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 291 transitions. [2023-11-23 22:42:57,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.60625 [2023-11-23 22:42:57,425 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 291 transitions. [2023-11-23 22:42:57,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 291 transitions. [2023-11-23 22:42:57,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:42:57,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 291 transitions. [2023-11-23 22:42:57,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 36.375) internal successors, (291), 8 states have internal predecessors, (291), 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 22:42:57,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 60.0) internal successors, (540), 9 states have internal predecessors, (540), 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 22:42:57,430 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 60.0) internal successors, (540), 9 states have internal predecessors, (540), 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 22:42:57,430 INFO L175 Difference]: Start difference. First operand has 74 places, 72 transitions, 210 flow. Second operand 8 states and 291 transitions. [2023-11-23 22:42:57,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 156 transitions, 628 flow [2023-11-23 22:42:57,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 156 transitions, 626 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-23 22:42:57,444 INFO L231 Difference]: Finished difference. Result has 82 places, 93 transitions, 334 flow [2023-11-23 22:42:57,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=334, PETRI_PLACES=82, PETRI_TRANSITIONS=93} [2023-11-23 22:42:57,445 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 16 predicate places. [2023-11-23 22:42:57,446 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 93 transitions, 334 flow [2023-11-23 22:42:57,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 25.875) internal successors, (207), 8 states have internal predecessors, (207), 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 22:42:57,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:42:57,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:42:57,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 22:42:57,447 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-23 22:42:57,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:42:57,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1353143003, now seen corresponding path program 3 times [2023-11-23 22:42:57,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:42:57,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728229997] [2023-11-23 22:42:57,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:42:57,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:42:57,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:42:57,590 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 22:42:57,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:42:57,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728229997] [2023-11-23 22:42:57,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728229997] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:42:57,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:42:57,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:42:57,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692284449] [2023-11-23 22:42:57,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:42:57,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:42:57,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:42:57,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:42:57,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:42:57,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 60 [2023-11-23 22:42:57,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 93 transitions, 334 flow. Second operand has 3 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 22:42:57,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:42:57,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 60 [2023-11-23 22:42:57,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:42:58,725 INFO L124 PetriNetUnfolderBase]: 3950/7713 cut-off events. [2023-11-23 22:42:58,726 INFO L125 PetriNetUnfolderBase]: For 1174/1199 co-relation queries the response was YES. [2023-11-23 22:42:58,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16391 conditions, 7713 events. 3950/7713 cut-off events. For 1174/1199 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 59891 event pairs, 2585 based on Foata normal form. 118/7535 useless extension candidates. Maximal degree in co-relation 12421. Up to 4869 conditions per place. [2023-11-23 22:42:58,803 INFO L140 encePairwiseOnDemand]: 56/60 looper letters, 61 selfloop transitions, 2 changer transitions 0/112 dead transitions. [2023-11-23 22:42:58,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 112 transitions, 516 flow [2023-11-23 22:42:58,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:42:58,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 22:42:58,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 128 transitions. [2023-11-23 22:42:58,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7111111111111111 [2023-11-23 22:42:58,806 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 128 transitions. [2023-11-23 22:42:58,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 128 transitions. [2023-11-23 22:42:58,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:42:58,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 128 transitions. [2023-11-23 22:42:58,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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 22:42:58,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 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 22:42:58,809 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 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 22:42:58,809 INFO L175 Difference]: Start difference. First operand has 82 places, 93 transitions, 334 flow. Second operand 3 states and 128 transitions. [2023-11-23 22:42:58,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 112 transitions, 516 flow [2023-11-23 22:42:58,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 112 transitions, 516 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-23 22:42:58,842 INFO L231 Difference]: Finished difference. Result has 85 places, 93 transitions, 344 flow [2023-11-23 22:42:58,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=344, PETRI_PLACES=85, PETRI_TRANSITIONS=93} [2023-11-23 22:42:58,844 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 19 predicate places. [2023-11-23 22:42:58,845 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 93 transitions, 344 flow [2023-11-23 22:42:58,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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 22:42:58,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:42:58,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:42:58,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 22:42:58,847 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-23 22:42:58,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:42:58,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1205566411, now seen corresponding path program 4 times [2023-11-23 22:42:58,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:42:58,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921299042] [2023-11-23 22:42:58,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:42:58,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:42:58,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:42:59,000 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 22:42:59,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:42:59,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921299042] [2023-11-23 22:42:59,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921299042] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:42:59,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:42:59,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:42:59,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407678710] [2023-11-23 22:42:59,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:42:59,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:42:59,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:42:59,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:42:59,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:42:59,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 60 [2023-11-23 22:42:59,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 93 transitions, 344 flow. Second operand has 3 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 22:42:59,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:42:59,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 60 [2023-11-23 22:42:59,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:43:00,119 INFO L124 PetriNetUnfolderBase]: 3916/7783 cut-off events. [2023-11-23 22:43:00,120 INFO L125 PetriNetUnfolderBase]: For 1651/1721 co-relation queries the response was YES. [2023-11-23 22:43:00,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17158 conditions, 7783 events. 3916/7783 cut-off events. For 1651/1721 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 61716 event pairs, 2809 based on Foata normal form. 110/7567 useless extension candidates. Maximal degree in co-relation 13222. Up to 4744 conditions per place. [2023-11-23 22:43:00,198 INFO L140 encePairwiseOnDemand]: 56/60 looper letters, 62 selfloop transitions, 2 changer transitions 0/113 dead transitions. [2023-11-23 22:43:00,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 113 transitions, 539 flow [2023-11-23 22:43:00,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:43:00,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 22:43:00,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 128 transitions. [2023-11-23 22:43:00,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7111111111111111 [2023-11-23 22:43:00,200 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 128 transitions. [2023-11-23 22:43:00,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 128 transitions. [2023-11-23 22:43:00,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:43:00,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 128 transitions. [2023-11-23 22:43:00,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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 22:43:00,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 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 22:43:00,204 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 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 22:43:00,204 INFO L175 Difference]: Start difference. First operand has 85 places, 93 transitions, 344 flow. Second operand 3 states and 128 transitions. [2023-11-23 22:43:00,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 113 transitions, 539 flow [2023-11-23 22:43:00,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 113 transitions, 535 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-23 22:43:00,226 INFO L231 Difference]: Finished difference. Result has 86 places, 93 transitions, 350 flow [2023-11-23 22:43:00,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=350, PETRI_PLACES=86, PETRI_TRANSITIONS=93} [2023-11-23 22:43:00,229 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 20 predicate places. [2023-11-23 22:43:00,229 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 93 transitions, 350 flow [2023-11-23 22:43:00,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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 22:43:00,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:43:00,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:43:00,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 22:43:00,232 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-23 22:43:00,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:43:00,233 INFO L85 PathProgramCache]: Analyzing trace with hash -757618555, now seen corresponding path program 5 times [2023-11-23 22:43:00,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:43:00,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645205668] [2023-11-23 22:43:00,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:43:00,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:43:00,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:43:00,626 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 22:43:00,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:43:00,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645205668] [2023-11-23 22:43:00,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645205668] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:43:00,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:43:00,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 22:43:00,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042473809] [2023-11-23 22:43:00,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:43:00,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 22:43:00,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:43:00,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 22:43:00,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-23 22:43:00,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 60 [2023-11-23 22:43:00,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 93 transitions, 350 flow. Second operand has 9 states, 9 states have (on average 26.11111111111111) internal successors, (235), 9 states have internal predecessors, (235), 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 22:43:00,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:43:00,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 60 [2023-11-23 22:43:00,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:43:02,599 INFO L124 PetriNetUnfolderBase]: 7187/12531 cut-off events. [2023-11-23 22:43:02,599 INFO L125 PetriNetUnfolderBase]: For 3598/3680 co-relation queries the response was YES. [2023-11-23 22:43:02,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29665 conditions, 12531 events. 7187/12531 cut-off events. For 3598/3680 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 94282 event pairs, 2355 based on Foata normal form. 22/12300 useless extension candidates. Maximal degree in co-relation 19882. Up to 3074 conditions per place. [2023-11-23 22:43:02,718 INFO L140 encePairwiseOnDemand]: 52/60 looper letters, 194 selfloop transitions, 22 changer transitions 22/267 dead transitions. [2023-11-23 22:43:02,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 267 transitions, 1353 flow [2023-11-23 22:43:02,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 22:43:02,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-23 22:43:02,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 440 transitions. [2023-11-23 22:43:02,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2023-11-23 22:43:02,722 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 440 transitions. [2023-11-23 22:43:02,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 440 transitions. [2023-11-23 22:43:02,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:43:02,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 440 transitions. [2023-11-23 22:43:02,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 40.0) internal successors, (440), 11 states have internal predecessors, (440), 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 22:43:02,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 60.0) internal successors, (720), 12 states have internal predecessors, (720), 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 22:43:02,727 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 60.0) internal successors, (720), 12 states have internal predecessors, (720), 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 22:43:02,727 INFO L175 Difference]: Start difference. First operand has 86 places, 93 transitions, 350 flow. Second operand 11 states and 440 transitions. [2023-11-23 22:43:02,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 267 transitions, 1353 flow [2023-11-23 22:43:02,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 267 transitions, 1349 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-23 22:43:02,752 INFO L231 Difference]: Finished difference. Result has 99 places, 108 transitions, 502 flow [2023-11-23 22:43:02,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=502, PETRI_PLACES=99, PETRI_TRANSITIONS=108} [2023-11-23 22:43:02,754 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 33 predicate places. [2023-11-23 22:43:02,754 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 108 transitions, 502 flow [2023-11-23 22:43:02,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 26.11111111111111) internal successors, (235), 9 states have internal predecessors, (235), 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 22:43:02,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:43:02,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:43:02,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 22:43:02,755 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-23 22:43:02,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:43:02,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1936492561, now seen corresponding path program 6 times [2023-11-23 22:43:02,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:43:02,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271466908] [2023-11-23 22:43:02,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:43:02,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:43:02,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:43:03,570 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 22:43:03,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:43:03,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271466908] [2023-11-23 22:43:03,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271466908] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:43:03,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:43:03,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 22:43:03,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385670902] [2023-11-23 22:43:03,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:43:03,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 22:43:03,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:43:03,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 22:43:03,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-23 22:43:03,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 60 [2023-11-23 22:43:03,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 108 transitions, 502 flow. Second operand has 10 states, 10 states have (on average 23.0) internal successors, (230), 10 states have internal predecessors, (230), 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 22:43:03,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:43:03,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 60 [2023-11-23 22:43:03,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:43:07,092 INFO L124 PetriNetUnfolderBase]: 12555/21410 cut-off events. [2023-11-23 22:43:07,093 INFO L125 PetriNetUnfolderBase]: For 7495/7592 co-relation queries the response was YES. [2023-11-23 22:43:07,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52292 conditions, 21410 events. 12555/21410 cut-off events. For 7495/7592 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 160996 event pairs, 5058 based on Foata normal form. 230/21051 useless extension candidates. Maximal degree in co-relation 52225. Up to 14348 conditions per place. [2023-11-23 22:43:07,298 INFO L140 encePairwiseOnDemand]: 46/60 looper letters, 169 selfloop transitions, 61 changer transitions 1/278 dead transitions. [2023-11-23 22:43:07,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 278 transitions, 1512 flow [2023-11-23 22:43:07,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 22:43:07,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-23 22:43:07,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 442 transitions. [2023-11-23 22:43:07,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2023-11-23 22:43:07,301 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 442 transitions. [2023-11-23 22:43:07,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 442 transitions. [2023-11-23 22:43:07,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:43:07,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 442 transitions. [2023-11-23 22:43:07,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 34.0) internal successors, (442), 13 states have internal predecessors, (442), 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 22:43:07,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 60.0) internal successors, (840), 14 states have internal predecessors, (840), 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 22:43:07,307 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 60.0) internal successors, (840), 14 states have internal predecessors, (840), 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 22:43:07,307 INFO L175 Difference]: Start difference. First operand has 99 places, 108 transitions, 502 flow. Second operand 13 states and 442 transitions. [2023-11-23 22:43:07,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 278 transitions, 1512 flow [2023-11-23 22:43:07,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 278 transitions, 1498 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-11-23 22:43:07,425 INFO L231 Difference]: Finished difference. Result has 117 places, 164 transitions, 983 flow [2023-11-23 22:43:07,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=983, PETRI_PLACES=117, PETRI_TRANSITIONS=164} [2023-11-23 22:43:07,429 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 51 predicate places. [2023-11-23 22:43:07,429 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 164 transitions, 983 flow [2023-11-23 22:43:07,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 23.0) internal successors, (230), 10 states have internal predecessors, (230), 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 22:43:07,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:43:07,430 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:43:07,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 22:43:07,431 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-23 22:43:07,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:43:07,431 INFO L85 PathProgramCache]: Analyzing trace with hash -214080035, now seen corresponding path program 7 times [2023-11-23 22:43:07,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:43:07,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513876622] [2023-11-23 22:43:07,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:43:07,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:43:07,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:43:08,271 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 22:43:08,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:43:08,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513876622] [2023-11-23 22:43:08,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513876622] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:43:08,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:43:08,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 22:43:08,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053430717] [2023-11-23 22:43:08,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:43:08,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 22:43:08,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:43:08,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 22:43:08,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-23 22:43:08,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 60 [2023-11-23 22:43:08,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 164 transitions, 983 flow. Second operand has 9 states, 9 states have (on average 24.333333333333332) internal successors, (219), 9 states have internal predecessors, (219), 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 22:43:08,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:43:08,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 60 [2023-11-23 22:43:08,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:43:12,263 INFO L124 PetriNetUnfolderBase]: 14373/24605 cut-off events. [2023-11-23 22:43:12,263 INFO L125 PetriNetUnfolderBase]: For 30296/31110 co-relation queries the response was YES. [2023-11-23 22:43:12,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72690 conditions, 24605 events. 14373/24605 cut-off events. For 30296/31110 co-relation queries the response was YES. Maximal size of possible extension queue 647. Compared 191513 event pairs, 4384 based on Foata normal form. 242/23973 useless extension candidates. Maximal degree in co-relation 57568. Up to 9229 conditions per place. [2023-11-23 22:43:12,478 INFO L140 encePairwiseOnDemand]: 49/60 looper letters, 169 selfloop transitions, 58 changer transitions 1/280 dead transitions. [2023-11-23 22:43:12,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 280 transitions, 1969 flow [2023-11-23 22:43:12,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 22:43:12,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-23 22:43:12,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 316 transitions. [2023-11-23 22:43:12,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5851851851851851 [2023-11-23 22:43:12,481 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 316 transitions. [2023-11-23 22:43:12,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 316 transitions. [2023-11-23 22:43:12,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:43:12,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 316 transitions. [2023-11-23 22:43:12,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 35.111111111111114) internal successors, (316), 9 states have internal predecessors, (316), 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 22:43:12,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 60.0) internal successors, (600), 10 states have internal predecessors, (600), 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 22:43:12,485 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 60.0) internal successors, (600), 10 states have internal predecessors, (600), 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 22:43:12,485 INFO L175 Difference]: Start difference. First operand has 117 places, 164 transitions, 983 flow. Second operand 9 states and 316 transitions. [2023-11-23 22:43:12,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 280 transitions, 1969 flow [2023-11-23 22:43:12,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 280 transitions, 1909 flow, removed 30 selfloop flow, removed 0 redundant places. [2023-11-23 22:43:12,943 INFO L231 Difference]: Finished difference. Result has 129 places, 181 transitions, 1266 flow [2023-11-23 22:43:12,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=945, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1266, PETRI_PLACES=129, PETRI_TRANSITIONS=181} [2023-11-23 22:43:12,944 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 63 predicate places. [2023-11-23 22:43:12,944 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 181 transitions, 1266 flow [2023-11-23 22:43:12,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.333333333333332) internal successors, (219), 9 states have internal predecessors, (219), 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 22:43:12,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:43:12,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:43:12,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 22:43:12,946 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-23 22:43:12,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:43:12,946 INFO L85 PathProgramCache]: Analyzing trace with hash -509496885, now seen corresponding path program 8 times [2023-11-23 22:43:12,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:43:12,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953010160] [2023-11-23 22:43:12,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:43:12,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:43:12,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:43:13,064 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 22:43:13,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:43:13,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953010160] [2023-11-23 22:43:13,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953010160] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:43:13,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:43:13,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:43:13,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528176195] [2023-11-23 22:43:13,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:43:13,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:43:13,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:43:13,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:43:13,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:43:13,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 60 [2023-11-23 22:43:13,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 181 transitions, 1266 flow. Second operand has 3 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 22:43:13,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:43:13,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 60 [2023-11-23 22:43:13,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:43:16,251 INFO L124 PetriNetUnfolderBase]: 9044/18050 cut-off events. [2023-11-23 22:43:16,251 INFO L125 PetriNetUnfolderBase]: For 24832/25397 co-relation queries the response was YES. [2023-11-23 22:43:16,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54351 conditions, 18050 events. 9044/18050 cut-off events. For 24832/25397 co-relation queries the response was YES. Maximal size of possible extension queue 593. Compared 161063 event pairs, 6298 based on Foata normal form. 360/17543 useless extension candidates. Maximal degree in co-relation 45792. Up to 11487 conditions per place. [2023-11-23 22:43:16,624 INFO L140 encePairwiseOnDemand]: 56/60 looper letters, 102 selfloop transitions, 2 changer transitions 0/218 dead transitions. [2023-11-23 22:43:16,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 218 transitions, 1696 flow [2023-11-23 22:43:16,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:43:16,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 22:43:16,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 128 transitions. [2023-11-23 22:43:16,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7111111111111111 [2023-11-23 22:43:16,650 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 128 transitions. [2023-11-23 22:43:16,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 128 transitions. [2023-11-23 22:43:16,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:43:16,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 128 transitions. [2023-11-23 22:43:16,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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 22:43:16,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 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 22:43:16,653 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 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 22:43:16,653 INFO L175 Difference]: Start difference. First operand has 129 places, 181 transitions, 1266 flow. Second operand 3 states and 128 transitions. [2023-11-23 22:43:16,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 218 transitions, 1696 flow [2023-11-23 22:43:16,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 218 transitions, 1637 flow, removed 10 selfloop flow, removed 4 redundant places. [2023-11-23 22:43:16,993 INFO L231 Difference]: Finished difference. Result has 128 places, 180 transitions, 1220 flow [2023-11-23 22:43:16,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1210, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1220, PETRI_PLACES=128, PETRI_TRANSITIONS=180} [2023-11-23 22:43:16,997 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 62 predicate places. [2023-11-23 22:43:16,997 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 180 transitions, 1220 flow [2023-11-23 22:43:16,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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 22:43:16,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:43:16,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:43:16,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-23 22:43:16,999 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-23 22:43:16,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:43:16,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1032939675, now seen corresponding path program 9 times [2023-11-23 22:43:16,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:43:16,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344165473] [2023-11-23 22:43:17,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:43:17,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:43:17,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:43:17,583 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 22:43:17,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:43:17,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344165473] [2023-11-23 22:43:17,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344165473] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:43:17,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:43:17,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 22:43:17,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873663254] [2023-11-23 22:43:17,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:43:17,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 22:43:17,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:43:17,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 22:43:17,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-23 22:43:17,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 60 [2023-11-23 22:43:17,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 180 transitions, 1220 flow. Second operand has 9 states, 9 states have (on average 25.22222222222222) internal successors, (227), 9 states have internal predecessors, (227), 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 22:43:17,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:43:17,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 60 [2023-11-23 22:43:17,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:43:23,121 INFO L124 PetriNetUnfolderBase]: 21069/36558 cut-off events. [2023-11-23 22:43:23,121 INFO L125 PetriNetUnfolderBase]: For 73135/73754 co-relation queries the response was YES. [2023-11-23 22:43:23,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121000 conditions, 36558 events. 21069/36558 cut-off events. For 73135/73754 co-relation queries the response was YES. Maximal size of possible extension queue 1014. Compared 304646 event pairs, 3850 based on Foata normal form. 448/36049 useless extension candidates. Maximal degree in co-relation 95973. Up to 6311 conditions per place. [2023-11-23 22:43:23,480 INFO L140 encePairwiseOnDemand]: 46/60 looper letters, 202 selfloop transitions, 131 changer transitions 0/386 dead transitions. [2023-11-23 22:43:23,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 386 transitions, 3045 flow [2023-11-23 22:43:23,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 22:43:23,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-23 22:43:23,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 426 transitions. [2023-11-23 22:43:23,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6454545454545455 [2023-11-23 22:43:23,483 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 426 transitions. [2023-11-23 22:43:23,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 426 transitions. [2023-11-23 22:43:23,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:43:23,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 426 transitions. [2023-11-23 22:43:23,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 38.72727272727273) internal successors, (426), 11 states have internal predecessors, (426), 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 22:43:23,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 60.0) internal successors, (720), 12 states have internal predecessors, (720), 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 22:43:23,491 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 60.0) internal successors, (720), 12 states have internal predecessors, (720), 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 22:43:23,491 INFO L175 Difference]: Start difference. First operand has 128 places, 180 transitions, 1220 flow. Second operand 11 states and 426 transitions. [2023-11-23 22:43:23,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 386 transitions, 3045 flow [2023-11-23 22:43:24,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 386 transitions, 3041 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-23 22:43:24,121 INFO L231 Difference]: Finished difference. Result has 145 places, 254 transitions, 2383 flow [2023-11-23 22:43:24,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1216, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2383, PETRI_PLACES=145, PETRI_TRANSITIONS=254} [2023-11-23 22:43:24,123 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 79 predicate places. [2023-11-23 22:43:24,123 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 254 transitions, 2383 flow [2023-11-23 22:43:24,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 25.22222222222222) internal successors, (227), 9 states have internal predecessors, (227), 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 22:43:24,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:43:24,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:43:24,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-23 22:43:24,124 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-23 22:43:24,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:43:24,125 INFO L85 PathProgramCache]: Analyzing trace with hash 939175803, now seen corresponding path program 10 times [2023-11-23 22:43:24,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:43:24,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393706262] [2023-11-23 22:43:24,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:43:24,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:43:24,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:43:24,552 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 22:43:24,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:43:24,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393706262] [2023-11-23 22:43:24,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393706262] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:43:24,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:43:24,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 22:43:24,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948828213] [2023-11-23 22:43:24,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:43:24,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 22:43:24,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:43:24,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 22:43:24,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 22:43:24,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 60 [2023-11-23 22:43:24,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 254 transitions, 2383 flow. Second operand has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 6 states have internal predecessors, (169), 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 22:43:24,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:43:24,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 60 [2023-11-23 22:43:24,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:43:31,151 INFO L124 PetriNetUnfolderBase]: 22762/39871 cut-off events. [2023-11-23 22:43:31,152 INFO L125 PetriNetUnfolderBase]: For 183240/185711 co-relation queries the response was YES. [2023-11-23 22:43:31,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160049 conditions, 39871 events. 22762/39871 cut-off events. For 183240/185711 co-relation queries the response was YES. Maximal size of possible extension queue 1175. Compared 341600 event pairs, 8016 based on Foata normal form. 620/39283 useless extension candidates. Maximal degree in co-relation 127892. Up to 28564 conditions per place. [2023-11-23 22:43:31,600 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 257 selfloop transitions, 49 changer transitions 7/368 dead transitions. [2023-11-23 22:43:31,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 368 transitions, 3920 flow [2023-11-23 22:43:31,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 22:43:31,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-23 22:43:31,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 274 transitions. [2023-11-23 22:43:31,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6523809523809524 [2023-11-23 22:43:31,603 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 274 transitions. [2023-11-23 22:43:31,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 274 transitions. [2023-11-23 22:43:31,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:43:31,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 274 transitions. [2023-11-23 22:43:31,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 39.142857142857146) internal successors, (274), 7 states have internal predecessors, (274), 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 22:43:31,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 60.0) internal successors, (480), 8 states have internal predecessors, (480), 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 22:43:31,609 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 60.0) internal successors, (480), 8 states have internal predecessors, (480), 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 22:43:31,609 INFO L175 Difference]: Start difference. First operand has 145 places, 254 transitions, 2383 flow. Second operand 7 states and 274 transitions. [2023-11-23 22:43:31,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 368 transitions, 3920 flow [2023-11-23 22:43:33,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 368 transitions, 3857 flow, removed 31 selfloop flow, removed 1 redundant places. [2023-11-23 22:43:33,567 INFO L231 Difference]: Finished difference. Result has 154 places, 279 transitions, 2839 flow [2023-11-23 22:43:33,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=2348, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2839, PETRI_PLACES=154, PETRI_TRANSITIONS=279} [2023-11-23 22:43:33,569 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 88 predicate places. [2023-11-23 22:43:33,569 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 279 transitions, 2839 flow [2023-11-23 22:43:33,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 6 states have internal predecessors, (169), 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 22:43:33,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:43:33,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:43:33,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-23 22:43:33,570 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-23 22:43:33,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:43:33,571 INFO L85 PathProgramCache]: Analyzing trace with hash -2068688455, now seen corresponding path program 11 times [2023-11-23 22:43:33,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:43:33,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479494989] [2023-11-23 22:43:33,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:43:33,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:43:33,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat