./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe030_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_2356fcd9-cfa5-48da-8b27-6425c432d48c/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2356fcd9-cfa5-48da-8b27-6425c432d48c/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2356fcd9-cfa5-48da-8b27-6425c432d48c/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2356fcd9-cfa5-48da-8b27-6425c432d48c/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe030_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2356fcd9-cfa5-48da-8b27-6425c432d48c/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2356fcd9-cfa5-48da-8b27-6425c432d48c/bin/uautomizer-verify-VRDe98Ueme --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 1730fa7f98e17ee8b58920ef3daf63ee88225f1b42924032a532b5f5db33fba5 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:55:18,268 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:55:18,341 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2356fcd9-cfa5-48da-8b27-6425c432d48c/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 11:55:18,347 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:55:18,348 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:55:18,377 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:55:18,378 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:55:18,379 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:55:18,380 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:55:18,380 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:55:18,381 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:55:18,382 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:55:18,383 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:55:18,383 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:55:18,384 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:55:18,385 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:55:18,385 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:55:18,386 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:55:18,386 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:55:18,387 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:55:18,388 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:55:18,389 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:55:18,389 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:55:18,390 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:55:18,390 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:55:18,391 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:55:18,392 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:55:18,392 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:55:18,393 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:55:18,393 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:55:18,394 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:55:18,394 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:55:18,395 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:55:18,396 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:55:18,396 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:55:18,396 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:55:18,397 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:55:18,397 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:55:18,397 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:55:18,398 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:55:18,398 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:55:18,398 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:55:18,399 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_2356fcd9-cfa5-48da-8b27-6425c432d48c/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2356fcd9-cfa5-48da-8b27-6425c432d48c/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1730fa7f98e17ee8b58920ef3daf63ee88225f1b42924032a532b5f5db33fba5 [2023-11-26 11:55:18,654 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:55:18,690 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:55:18,693 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:55:18,694 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:55:18,695 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:55:18,696 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2356fcd9-cfa5-48da-8b27-6425c432d48c/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/pthread-wmm/safe030_tso.i [2023-11-26 11:55:21,885 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:55:22,184 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:55:22,185 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2356fcd9-cfa5-48da-8b27-6425c432d48c/sv-benchmarks/c/pthread-wmm/safe030_tso.i [2023-11-26 11:55:22,204 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2356fcd9-cfa5-48da-8b27-6425c432d48c/bin/uautomizer-verify-VRDe98Ueme/data/02604d744/2cd37a80b67841febaeb5456769e19a1/FLAGa53db48b9 [2023-11-26 11:55:22,220 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2356fcd9-cfa5-48da-8b27-6425c432d48c/bin/uautomizer-verify-VRDe98Ueme/data/02604d744/2cd37a80b67841febaeb5456769e19a1 [2023-11-26 11:55:22,223 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:55:22,225 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:55:22,226 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:55:22,227 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:55:22,237 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:55:22,237 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:55:22" (1/1) ... [2023-11-26 11:55:22,239 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3189b2d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:22, skipping insertion in model container [2023-11-26 11:55:22,239 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:55:22" (1/1) ... [2023-11-26 11:55:22,292 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:55:22,472 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_2356fcd9-cfa5-48da-8b27-6425c432d48c/sv-benchmarks/c/pthread-wmm/safe030_tso.i[945,958] [2023-11-26 11:55:22,751 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:55:22,762 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:55:22,776 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_2356fcd9-cfa5-48da-8b27-6425c432d48c/sv-benchmarks/c/pthread-wmm/safe030_tso.i[945,958] [2023-11-26 11:55:22,806 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:55:22,841 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:55:22,841 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:55:22,849 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:55:22,850 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:22 WrapperNode [2023-11-26 11:55:22,850 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:55:22,852 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:55:22,852 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:55:22,852 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:55:22,860 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:22" (1/1) ... [2023-11-26 11:55:22,875 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:22" (1/1) ... [2023-11-26 11:55:22,899 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 68 [2023-11-26 11:55:22,900 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:55:22,901 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:55:22,901 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:55:22,901 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:55:22,913 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:22" (1/1) ... [2023-11-26 11:55:22,913 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:22" (1/1) ... [2023-11-26 11:55:22,917 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:22" (1/1) ... [2023-11-26 11:55:22,932 INFO L175 MemorySlicer]: Split 5 memory accesses to 4 slices as follows [2, 1, 1, 1]. 40 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2023-11-26 11:55:22,932 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:22" (1/1) ... [2023-11-26 11:55:22,933 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:22" (1/1) ... [2023-11-26 11:55:22,940 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:22" (1/1) ... [2023-11-26 11:55:22,942 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:22" (1/1) ... [2023-11-26 11:55:22,944 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:22" (1/1) ... [2023-11-26 11:55:22,946 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:22" (1/1) ... [2023-11-26 11:55:22,949 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:55:22,950 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:55:22,951 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:55:22,951 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:55:22,952 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:22" (1/1) ... [2023-11-26 11:55:22,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:55:22,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2356fcd9-cfa5-48da-8b27-6425c432d48c/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:55:22,992 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2356fcd9-cfa5-48da-8b27-6425c432d48c/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:55:23,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2356fcd9-cfa5-48da-8b27-6425c432d48c/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:55:23,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 11:55:23,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 11:55:23,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 11:55:23,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 11:55:23,036 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-26 11:55:23,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:55:23,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:55:23,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:55:23,039 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-26 11:55:23,039 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-26 11:55:23,039 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-26 11:55:23,039 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-26 11:55:23,040 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-26 11:55:23,040 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-26 11:55:23,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:55:23,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 11:55:23,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 11:55:23,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 11:55:23,042 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-26 11:55:23,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:55:23,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:55:23,044 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 11:55:23,261 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:55:23,264 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:55:23,494 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:55:23,603 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:55:23,604 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-26 11:55:23,604 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:55:23 BoogieIcfgContainer [2023-11-26 11:55:23,604 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:55:23,607 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:55:23,607 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:55:23,610 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:55:23,610 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:55:22" (1/3) ... [2023-11-26 11:55:23,611 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d6bec18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:55:23, skipping insertion in model container [2023-11-26 11:55:23,611 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:22" (2/3) ... [2023-11-26 11:55:23,612 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d6bec18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:55:23, skipping insertion in model container [2023-11-26 11:55:23,612 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:55:23" (3/3) ... [2023-11-26 11:55:23,613 INFO L112 eAbstractionObserver]: Analyzing ICFG safe030_tso.i [2023-11-26 11:55:23,622 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 11:55:23,634 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:55:23,634 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 11:55:23,634 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 11:55:23,682 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 11:55:23,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 38 transitions, 88 flow [2023-11-26 11:55:23,753 INFO L124 PetriNetUnfolderBase]: 1/35 cut-off events. [2023-11-26 11:55:23,754 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:55:23,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 35 events. 1/35 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 59 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2023-11-26 11:55:23,757 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 38 transitions, 88 flow [2023-11-26 11:55:23,760 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 32 transitions, 73 flow [2023-11-26 11:55:23,772 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:55:23,779 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;@1716779a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:55:23,779 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-26 11:55:23,794 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:55:23,794 INFO L124 PetriNetUnfolderBase]: 0/31 cut-off events. [2023-11-26 11:55:23,794 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:55:23,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:55:23,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:23,802 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)] === [2023-11-26 11:55:23,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:23,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1826450204, now seen corresponding path program 1 times [2023-11-26 11:55:23,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:23,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170194356] [2023-11-26 11:55:23,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:23,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:24,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:24,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:24,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:24,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170194356] [2023-11-26 11:55:24,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170194356] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:24,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:24,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:55:24,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820168866] [2023-11-26 11:55:24,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:24,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:55:24,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:24,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:55:24,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:55:24,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2023-11-26 11:55:24,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 73 flow. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 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) [2023-11-26 11:55:24,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:55:24,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2023-11-26 11:55:24,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:55:25,366 INFO L124 PetriNetUnfolderBase]: 1575/2837 cut-off events. [2023-11-26 11:55:25,366 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-26 11:55:25,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5265 conditions, 2837 events. 1575/2837 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 19066 event pairs, 433 based on Foata normal form. 94/2873 useless extension candidates. Maximal degree in co-relation 5254. Up to 1096 conditions per place. [2023-11-26 11:55:25,445 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 30 selfloop transitions, 7 changer transitions 39/88 dead transitions. [2023-11-26 11:55:25,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 88 transitions, 343 flow [2023-11-26 11:55:25,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:55:25,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-26 11:55:25,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2023-11-26 11:55:25,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6879699248120301 [2023-11-26 11:55:25,466 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 183 transitions. [2023-11-26 11:55:25,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 183 transitions. [2023-11-26 11:55:25,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:55:25,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 183 transitions. [2023-11-26 11:55:25,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 26.142857142857142) internal successors, (183), 7 states have internal predecessors, (183), 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) [2023-11-26 11:55:25,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 38.0) internal successors, (304), 8 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:25,485 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 38.0) internal successors, (304), 8 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:25,488 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 73 flow. Second operand 7 states and 183 transitions. [2023-11-26 11:55:25,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 88 transitions, 343 flow [2023-11-26 11:55:25,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 88 transitions, 338 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-26 11:55:25,508 INFO L231 Difference]: Finished difference. Result has 51 places, 38 transitions, 156 flow [2023-11-26 11:55:25,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=156, PETRI_PLACES=51, PETRI_TRANSITIONS=38} [2023-11-26 11:55:25,517 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 9 predicate places. [2023-11-26 11:55:25,517 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 38 transitions, 156 flow [2023-11-26 11:55:25,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 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) [2023-11-26 11:55:25,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:55:25,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:25,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:55:25,519 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)] === [2023-11-26 11:55:25,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:25,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1628263653, now seen corresponding path program 1 times [2023-11-26 11:55:25,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:25,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685068886] [2023-11-26 11:55:25,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:25,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:25,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:25,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:25,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:25,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685068886] [2023-11-26 11:55:25,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685068886] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:25,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:25,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:55:25,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530683391] [2023-11-26 11:55:25,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:25,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:55:25,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:25,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:55:25,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:55:25,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2023-11-26 11:55:25,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 38 transitions, 156 flow. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 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) [2023-11-26 11:55:25,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:55:25,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2023-11-26 11:55:25,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:55:26,565 INFO L124 PetriNetUnfolderBase]: 1395/2627 cut-off events. [2023-11-26 11:55:26,566 INFO L125 PetriNetUnfolderBase]: For 3436/3445 co-relation queries the response was YES. [2023-11-26 11:55:26,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7905 conditions, 2627 events. 1395/2627 cut-off events. For 3436/3445 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 18026 event pairs, 156 based on Foata normal form. 92/2710 useless extension candidates. Maximal degree in co-relation 7889. Up to 1010 conditions per place. [2023-11-26 11:55:26,593 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 40 selfloop transitions, 11 changer transitions 58/121 dead transitions. [2023-11-26 11:55:26,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 121 transitions, 812 flow [2023-11-26 11:55:26,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 11:55:26,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-26 11:55:26,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 252 transitions. [2023-11-26 11:55:26,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6631578947368421 [2023-11-26 11:55:26,597 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 252 transitions. [2023-11-26 11:55:26,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 252 transitions. [2023-11-26 11:55:26,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:55:26,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 252 transitions. [2023-11-26 11:55:26,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 25.2) internal successors, (252), 10 states have internal predecessors, (252), 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) [2023-11-26 11:55:26,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 38.0) internal successors, (418), 11 states have internal predecessors, (418), 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) [2023-11-26 11:55:26,602 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 38.0) internal successors, (418), 11 states have internal predecessors, (418), 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) [2023-11-26 11:55:26,602 INFO L175 Difference]: Start difference. First operand has 51 places, 38 transitions, 156 flow. Second operand 10 states and 252 transitions. [2023-11-26 11:55:26,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 121 transitions, 812 flow [2023-11-26 11:55:26,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 121 transitions, 748 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:55:26,625 INFO L231 Difference]: Finished difference. Result has 63 places, 45 transitions, 266 flow [2023-11-26 11:55:26,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=266, PETRI_PLACES=63, PETRI_TRANSITIONS=45} [2023-11-26 11:55:26,632 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 21 predicate places. [2023-11-26 11:55:26,632 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 45 transitions, 266 flow [2023-11-26 11:55:26,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 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) [2023-11-26 11:55:26,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:55:26,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:26,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:55:26,634 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)] === [2023-11-26 11:55:26,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:26,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1805579685, now seen corresponding path program 1 times [2023-11-26 11:55:26,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:26,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134826323] [2023-11-26 11:55:26,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:26,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:26,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:26,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:26,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:26,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134826323] [2023-11-26 11:55:26,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134826323] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:26,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:26,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:55:26,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808545912] [2023-11-26 11:55:26,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:26,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:55:26,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:26,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:55:26,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:55:26,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2023-11-26 11:55:26,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 45 transitions, 266 flow. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 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) [2023-11-26 11:55:26,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:55:26,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2023-11-26 11:55:26,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:55:27,389 INFO L124 PetriNetUnfolderBase]: 1248/2367 cut-off events. [2023-11-26 11:55:27,390 INFO L125 PetriNetUnfolderBase]: For 8177/8183 co-relation queries the response was YES. [2023-11-26 11:55:27,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8597 conditions, 2367 events. 1248/2367 cut-off events. For 8177/8183 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 15876 event pairs, 217 based on Foata normal form. 67/2399 useless extension candidates. Maximal degree in co-relation 8572. Up to 954 conditions per place. [2023-11-26 11:55:27,421 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 45 selfloop transitions, 17 changer transitions 50/124 dead transitions. [2023-11-26 11:55:27,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 124 transitions, 988 flow [2023-11-26 11:55:27,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 11:55:27,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-26 11:55:27,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 246 transitions. [2023-11-26 11:55:27,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6473684210526316 [2023-11-26 11:55:27,424 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 246 transitions. [2023-11-26 11:55:27,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 246 transitions. [2023-11-26 11:55:27,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:55:27,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 246 transitions. [2023-11-26 11:55:27,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 24.6) internal successors, (246), 10 states have internal predecessors, (246), 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) [2023-11-26 11:55:27,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 38.0) internal successors, (418), 11 states have internal predecessors, (418), 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) [2023-11-26 11:55:27,429 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 38.0) internal successors, (418), 11 states have internal predecessors, (418), 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) [2023-11-26 11:55:27,429 INFO L175 Difference]: Start difference. First operand has 63 places, 45 transitions, 266 flow. Second operand 10 states and 246 transitions. [2023-11-26 11:55:27,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 124 transitions, 988 flow [2023-11-26 11:55:27,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 124 transitions, 956 flow, removed 16 selfloop flow, removed 0 redundant places. [2023-11-26 11:55:27,459 INFO L231 Difference]: Finished difference. Result has 75 places, 54 transitions, 438 flow [2023-11-26 11:55:27,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=438, PETRI_PLACES=75, PETRI_TRANSITIONS=54} [2023-11-26 11:55:27,461 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 33 predicate places. [2023-11-26 11:55:27,461 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 54 transitions, 438 flow [2023-11-26 11:55:27,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 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) [2023-11-26 11:55:27,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:55:27,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:27,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 11:55:27,462 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)] === [2023-11-26 11:55:27,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:27,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1910544222, now seen corresponding path program 1 times [2023-11-26 11:55:27,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:27,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113339200] [2023-11-26 11:55:27,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:27,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:27,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:27,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:27,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:27,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113339200] [2023-11-26 11:55:27,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113339200] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:27,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:27,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:55:27,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923996901] [2023-11-26 11:55:27,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:27,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:55:27,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:27,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:55:27,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:55:27,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2023-11-26 11:55:27,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 54 transitions, 438 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 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) [2023-11-26 11:55:27,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:55:27,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2023-11-26 11:55:27,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:55:28,233 INFO L124 PetriNetUnfolderBase]: 1123/2131 cut-off events. [2023-11-26 11:55:28,233 INFO L125 PetriNetUnfolderBase]: For 12965/12981 co-relation queries the response was YES. [2023-11-26 11:55:28,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9098 conditions, 2131 events. 1123/2131 cut-off events. For 12965/12981 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 14048 event pairs, 95 based on Foata normal form. 54/2170 useless extension candidates. Maximal degree in co-relation 9062. Up to 900 conditions per place. [2023-11-26 11:55:28,316 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 44 selfloop transitions, 22 changer transitions 40/118 dead transitions. [2023-11-26 11:55:28,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 118 transitions, 1166 flow [2023-11-26 11:55:28,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 11:55:28,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-26 11:55:28,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 234 transitions. [2023-11-26 11:55:28,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6157894736842106 [2023-11-26 11:55:28,319 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 234 transitions. [2023-11-26 11:55:28,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 234 transitions. [2023-11-26 11:55:28,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:55:28,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 234 transitions. [2023-11-26 11:55:28,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 23.4) internal successors, (234), 10 states have internal predecessors, (234), 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) [2023-11-26 11:55:28,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 38.0) internal successors, (418), 11 states have internal predecessors, (418), 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) [2023-11-26 11:55:28,323 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 38.0) internal successors, (418), 11 states have internal predecessors, (418), 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) [2023-11-26 11:55:28,323 INFO L175 Difference]: Start difference. First operand has 75 places, 54 transitions, 438 flow. Second operand 10 states and 234 transitions. [2023-11-26 11:55:28,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 118 transitions, 1166 flow [2023-11-26 11:55:28,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 118 transitions, 1114 flow, removed 26 selfloop flow, removed 4 redundant places. [2023-11-26 11:55:28,385 INFO L231 Difference]: Finished difference. Result has 83 places, 62 transitions, 620 flow [2023-11-26 11:55:28,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=620, PETRI_PLACES=83, PETRI_TRANSITIONS=62} [2023-11-26 11:55:28,387 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 41 predicate places. [2023-11-26 11:55:28,387 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 62 transitions, 620 flow [2023-11-26 11:55:28,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 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) [2023-11-26 11:55:28,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:55:28,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:28,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 11:55:28,388 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)] === [2023-11-26 11:55:28,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:28,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1143521150, now seen corresponding path program 1 times [2023-11-26 11:55:28,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:28,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188143790] [2023-11-26 11:55:28,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:28,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:28,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:28,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:28,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:28,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188143790] [2023-11-26 11:55:28,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188143790] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:28,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:28,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:55:28,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892381159] [2023-11-26 11:55:28,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:28,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:55:28,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:28,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:55:28,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:55:28,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2023-11-26 11:55:28,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 62 transitions, 620 flow. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:28,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:55:28,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2023-11-26 11:55:28,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:55:29,254 INFO L124 PetriNetUnfolderBase]: 1300/2522 cut-off events. [2023-11-26 11:55:29,254 INFO L125 PetriNetUnfolderBase]: For 20357/20357 co-relation queries the response was YES. [2023-11-26 11:55:29,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11687 conditions, 2522 events. 1300/2522 cut-off events. For 20357/20357 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 18079 event pairs, 233 based on Foata normal form. 50/2515 useless extension candidates. Maximal degree in co-relation 11644. Up to 688 conditions per place. [2023-11-26 11:55:29,292 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 48 selfloop transitions, 26 changer transitions 43/129 dead transitions. [2023-11-26 11:55:29,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 129 transitions, 1428 flow [2023-11-26 11:55:29,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 11:55:29,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-26 11:55:29,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 239 transitions. [2023-11-26 11:55:29,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6289473684210526 [2023-11-26 11:55:29,295 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 239 transitions. [2023-11-26 11:55:29,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 239 transitions. [2023-11-26 11:55:29,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:55:29,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 239 transitions. [2023-11-26 11:55:29,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 23.9) internal successors, (239), 10 states have internal predecessors, (239), 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) [2023-11-26 11:55:29,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 38.0) internal successors, (418), 11 states have internal predecessors, (418), 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) [2023-11-26 11:55:29,299 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 38.0) internal successors, (418), 11 states have internal predecessors, (418), 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) [2023-11-26 11:55:29,299 INFO L175 Difference]: Start difference. First operand has 83 places, 62 transitions, 620 flow. Second operand 10 states and 239 transitions. [2023-11-26 11:55:29,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 129 transitions, 1428 flow [2023-11-26 11:55:29,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 129 transitions, 1370 flow, removed 29 selfloop flow, removed 6 redundant places. [2023-11-26 11:55:29,351 INFO L231 Difference]: Finished difference. Result has 89 places, 62 transitions, 726 flow [2023-11-26 11:55:29,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=594, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=726, PETRI_PLACES=89, PETRI_TRANSITIONS=62} [2023-11-26 11:55:29,352 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 47 predicate places. [2023-11-26 11:55:29,352 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 62 transitions, 726 flow [2023-11-26 11:55:29,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:29,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:55:29,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:29,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 11:55:29,353 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)] === [2023-11-26 11:55:29,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:29,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1812430890, now seen corresponding path program 1 times [2023-11-26 11:55:29,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:29,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862779391] [2023-11-26 11:55:29,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:29,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:29,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:29,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:29,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:29,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862779391] [2023-11-26 11:55:29,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862779391] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:29,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:29,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:55:29,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844097201] [2023-11-26 11:55:29,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:29,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:55:29,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:29,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:55:29,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:55:29,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 38 [2023-11-26 11:55:29,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 62 transitions, 726 flow. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 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) [2023-11-26 11:55:29,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:55:29,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 38 [2023-11-26 11:55:29,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:55:29,983 INFO L124 PetriNetUnfolderBase]: 941/2174 cut-off events. [2023-11-26 11:55:29,992 INFO L125 PetriNetUnfolderBase]: For 19547/19993 co-relation queries the response was YES. [2023-11-26 11:55:30,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9690 conditions, 2174 events. 941/2174 cut-off events. For 19547/19993 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 17804 event pairs, 295 based on Foata normal form. 117/2130 useless extension candidates. Maximal degree in co-relation 9657. Up to 611 conditions per place. [2023-11-26 11:55:30,032 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 26 selfloop transitions, 7 changer transitions 22/90 dead transitions. [2023-11-26 11:55:30,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 90 transitions, 1022 flow [2023-11-26 11:55:30,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:55:30,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-26 11:55:30,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2023-11-26 11:55:30,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6691729323308271 [2023-11-26 11:55:30,035 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 178 transitions. [2023-11-26 11:55:30,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 178 transitions. [2023-11-26 11:55:30,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:55:30,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 178 transitions. [2023-11-26 11:55:30,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 25.428571428571427) internal successors, (178), 7 states have internal predecessors, (178), 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) [2023-11-26 11:55:30,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 38.0) internal successors, (304), 8 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:30,039 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 38.0) internal successors, (304), 8 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:30,039 INFO L175 Difference]: Start difference. First operand has 89 places, 62 transitions, 726 flow. Second operand 7 states and 178 transitions. [2023-11-26 11:55:30,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 90 transitions, 1022 flow [2023-11-26 11:55:30,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 90 transitions, 982 flow, removed 20 selfloop flow, removed 5 redundant places. [2023-11-26 11:55:30,087 INFO L231 Difference]: Finished difference. Result has 89 places, 59 transitions, 695 flow [2023-11-26 11:55:30,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=708, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=695, PETRI_PLACES=89, PETRI_TRANSITIONS=59} [2023-11-26 11:55:30,091 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 47 predicate places. [2023-11-26 11:55:30,091 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 59 transitions, 695 flow [2023-11-26 11:55:30,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 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) [2023-11-26 11:55:30,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:55:30,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:30,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 11:55:30,095 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)] === [2023-11-26 11:55:30,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:30,096 INFO L85 PathProgramCache]: Analyzing trace with hash -168340106, now seen corresponding path program 1 times [2023-11-26 11:55:30,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:30,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594867646] [2023-11-26 11:55:30,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:30,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:30,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:30,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:30,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:30,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594867646] [2023-11-26 11:55:30,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594867646] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:30,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:30,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:55:30,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858667827] [2023-11-26 11:55:30,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:30,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:55:30,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:30,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:55:30,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:55:30,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 38 [2023-11-26 11:55:30,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 59 transitions, 695 flow. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 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) [2023-11-26 11:55:30,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:55:30,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 38 [2023-11-26 11:55:30,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:55:30,936 INFO L124 PetriNetUnfolderBase]: 1163/2675 cut-off events. [2023-11-26 11:55:30,936 INFO L125 PetriNetUnfolderBase]: For 20970/21384 co-relation queries the response was YES. [2023-11-26 11:55:30,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10761 conditions, 2675 events. 1163/2675 cut-off events. For 20970/21384 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 23185 event pairs, 403 based on Foata normal form. 120/2608 useless extension candidates. Maximal degree in co-relation 10727. Up to 833 conditions per place. [2023-11-26 11:55:30,983 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 24 selfloop transitions, 7 changer transitions 22/85 dead transitions. [2023-11-26 11:55:30,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 85 transitions, 985 flow [2023-11-26 11:55:30,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:55:30,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-26 11:55:30,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2023-11-26 11:55:30,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6616541353383458 [2023-11-26 11:55:30,986 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 176 transitions. [2023-11-26 11:55:30,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 176 transitions. [2023-11-26 11:55:30,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:55:30,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 176 transitions. [2023-11-26 11:55:30,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 25.142857142857142) internal successors, (176), 7 states have internal predecessors, (176), 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) [2023-11-26 11:55:30,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 38.0) internal successors, (304), 8 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:30,990 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 38.0) internal successors, (304), 8 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:30,990 INFO L175 Difference]: Start difference. First operand has 89 places, 59 transitions, 695 flow. Second operand 7 states and 176 transitions. [2023-11-26 11:55:30,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 85 transitions, 985 flow [2023-11-26 11:55:31,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 85 transitions, 895 flow, removed 31 selfloop flow, removed 8 redundant places. [2023-11-26 11:55:31,063 INFO L231 Difference]: Finished difference. Result has 88 places, 56 transitions, 624 flow [2023-11-26 11:55:31,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=643, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=624, PETRI_PLACES=88, PETRI_TRANSITIONS=56} [2023-11-26 11:55:31,064 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 46 predicate places. [2023-11-26 11:55:31,064 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 56 transitions, 624 flow [2023-11-26 11:55:31,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 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) [2023-11-26 11:55:31,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:55:31,065 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:31,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 11:55:31,065 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)] === [2023-11-26 11:55:31,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:31,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1055003751, now seen corresponding path program 1 times [2023-11-26 11:55:31,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:31,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313738168] [2023-11-26 11:55:31,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:31,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:31,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:31,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:31,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:31,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313738168] [2023-11-26 11:55:31,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313738168] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:31,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:31,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:55:31,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951270632] [2023-11-26 11:55:31,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:31,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:55:31,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:31,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:55:31,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:55:31,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 38 [2023-11-26 11:55:31,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 56 transitions, 624 flow. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 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) [2023-11-26 11:55:31,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:55:31,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 38 [2023-11-26 11:55:31,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:55:31,828 INFO L124 PetriNetUnfolderBase]: 2315/4507 cut-off events. [2023-11-26 11:55:31,829 INFO L125 PetriNetUnfolderBase]: For 9089/9255 co-relation queries the response was YES. [2023-11-26 11:55:31,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11508 conditions, 4507 events. 2315/4507 cut-off events. For 9089/9255 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 36582 event pairs, 634 based on Foata normal form. 274/4533 useless extension candidates. Maximal degree in co-relation 11476. Up to 1973 conditions per place. [2023-11-26 11:55:31,944 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 26 selfloop transitions, 5 changer transitions 0/71 dead transitions. [2023-11-26 11:55:31,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 71 transitions, 720 flow [2023-11-26 11:55:31,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:55:31,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:55:31,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 113 transitions. [2023-11-26 11:55:31,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.743421052631579 [2023-11-26 11:55:31,946 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 113 transitions. [2023-11-26 11:55:31,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 113 transitions. [2023-11-26 11:55:31,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:55:31,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 113 transitions. [2023-11-26 11:55:31,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 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) [2023-11-26 11:55:31,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 38.0) internal successors, (190), 5 states have internal predecessors, (190), 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) [2023-11-26 11:55:31,948 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 38.0) internal successors, (190), 5 states have internal predecessors, (190), 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) [2023-11-26 11:55:31,949 INFO L175 Difference]: Start difference. First operand has 88 places, 56 transitions, 624 flow. Second operand 4 states and 113 transitions. [2023-11-26 11:55:31,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 71 transitions, 720 flow [2023-11-26 11:55:31,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 71 transitions, 667 flow, removed 12 selfloop flow, removed 8 redundant places. [2023-11-26 11:55:31,983 INFO L231 Difference]: Finished difference. Result has 81 places, 60 transitions, 609 flow [2023-11-26 11:55:31,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=571, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=609, PETRI_PLACES=81, PETRI_TRANSITIONS=60} [2023-11-26 11:55:31,984 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 39 predicate places. [2023-11-26 11:55:31,984 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 60 transitions, 609 flow [2023-11-26 11:55:31,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 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) [2023-11-26 11:55:31,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:55:31,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:31,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 11:55:31,985 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)] === [2023-11-26 11:55:31,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:31,986 INFO L85 PathProgramCache]: Analyzing trace with hash 2020568874, now seen corresponding path program 1 times [2023-11-26 11:55:31,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:31,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803626246] [2023-11-26 11:55:31,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:31,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:32,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:32,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:32,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:32,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803626246] [2023-11-26 11:55:32,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803626246] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:32,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:32,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:55:32,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134415280] [2023-11-26 11:55:32,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:32,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:55:32,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:32,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:55:32,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:55:32,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 38 [2023-11-26 11:55:32,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 60 transitions, 609 flow. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 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) [2023-11-26 11:55:32,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:55:32,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 38 [2023-11-26 11:55:32,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:55:32,797 INFO L124 PetriNetUnfolderBase]: 1908/3662 cut-off events. [2023-11-26 11:55:32,797 INFO L125 PetriNetUnfolderBase]: For 3124/4282 co-relation queries the response was YES. [2023-11-26 11:55:32,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9861 conditions, 3662 events. 1908/3662 cut-off events. For 3124/4282 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 27929 event pairs, 169 based on Foata normal form. 290/3757 useless extension candidates. Maximal degree in co-relation 9833. Up to 1820 conditions per place. [2023-11-26 11:55:32,836 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 30 selfloop transitions, 8 changer transitions 3/81 dead transitions. [2023-11-26 11:55:32,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 81 transitions, 754 flow [2023-11-26 11:55:32,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:55:32,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 11:55:32,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 143 transitions. [2023-11-26 11:55:32,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7526315789473684 [2023-11-26 11:55:32,838 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 143 transitions. [2023-11-26 11:55:32,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 143 transitions. [2023-11-26 11:55:32,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:55:32,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 143 transitions. [2023-11-26 11:55:32,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 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) [2023-11-26 11:55:32,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 38.0) internal successors, (228), 6 states have internal predecessors, (228), 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) [2023-11-26 11:55:32,841 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 38.0) internal successors, (228), 6 states have internal predecessors, (228), 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) [2023-11-26 11:55:32,841 INFO L175 Difference]: Start difference. First operand has 81 places, 60 transitions, 609 flow. Second operand 5 states and 143 transitions. [2023-11-26 11:55:32,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 81 transitions, 754 flow [2023-11-26 11:55:32,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 81 transitions, 719 flow, removed 16 selfloop flow, removed 4 redundant places. [2023-11-26 11:55:32,856 INFO L231 Difference]: Finished difference. Result has 83 places, 64 transitions, 629 flow [2023-11-26 11:55:32,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=575, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=629, PETRI_PLACES=83, PETRI_TRANSITIONS=64} [2023-11-26 11:55:32,858 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 41 predicate places. [2023-11-26 11:55:32,858 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 64 transitions, 629 flow [2023-11-26 11:55:32,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 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) [2023-11-26 11:55:32,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:55:32,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:32,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 11:55:32,859 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)] === [2023-11-26 11:55:32,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:32,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1905976095, now seen corresponding path program 1 times [2023-11-26 11:55:32,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:32,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719296762] [2023-11-26 11:55:32,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:32,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:32,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:33,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:33,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:33,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719296762] [2023-11-26 11:55:33,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719296762] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:33,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:33,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:55:33,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17348015] [2023-11-26 11:55:33,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:33,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:55:33,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:33,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:55:33,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:55:33,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 38 [2023-11-26 11:55:33,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 64 transitions, 629 flow. Second operand has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 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) [2023-11-26 11:55:33,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:55:33,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 38 [2023-11-26 11:55:33,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:55:33,648 INFO L124 PetriNetUnfolderBase]: 1652/3062 cut-off events. [2023-11-26 11:55:33,648 INFO L125 PetriNetUnfolderBase]: For 5615/7596 co-relation queries the response was YES. [2023-11-26 11:55:33,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9982 conditions, 3062 events. 1652/3062 cut-off events. For 5615/7596 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 22179 event pairs, 91 based on Foata normal form. 249/3128 useless extension candidates. Maximal degree in co-relation 9955. Up to 1324 conditions per place. [2023-11-26 11:55:33,673 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 0 selfloop transitions, 0 changer transitions 79/79 dead transitions. [2023-11-26 11:55:33,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 79 transitions, 740 flow [2023-11-26 11:55:33,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:55:33,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 11:55:33,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 164 transitions. [2023-11-26 11:55:33,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7192982456140351 [2023-11-26 11:55:33,675 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 164 transitions. [2023-11-26 11:55:33,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 164 transitions. [2023-11-26 11:55:33,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:55:33,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 164 transitions. [2023-11-26 11:55:33,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 27.333333333333332) internal successors, (164), 6 states have internal predecessors, (164), 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) [2023-11-26 11:55:33,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 38.0) internal successors, (266), 7 states have internal predecessors, (266), 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) [2023-11-26 11:55:33,678 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 38.0) internal successors, (266), 7 states have internal predecessors, (266), 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) [2023-11-26 11:55:33,678 INFO L175 Difference]: Start difference. First operand has 83 places, 64 transitions, 629 flow. Second operand 6 states and 164 transitions. [2023-11-26 11:55:33,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 79 transitions, 740 flow [2023-11-26 11:55:33,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 79 transitions, 694 flow, removed 9 selfloop flow, removed 7 redundant places. [2023-11-26 11:55:33,689 INFO L231 Difference]: Finished difference. Result has 77 places, 0 transitions, 0 flow [2023-11-26 11:55:33,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=77, PETRI_TRANSITIONS=0} [2023-11-26 11:55:33,690 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 35 predicate places. [2023-11-26 11:55:33,691 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 0 transitions, 0 flow [2023-11-26 11:55:33,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 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) [2023-11-26 11:55:33,694 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-26 11:55:33,694 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-26 11:55:33,695 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-26 11:55:33,695 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-26 11:55:33,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-26 11:55:33,696 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:33,700 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-26 11:55:33,700 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-26 11:55:33,706 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 11:55:33 BasicIcfg [2023-11-26 11:55:33,706 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-26 11:55:33,707 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 11:55:33,707 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 11:55:33,707 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 11:55:33,708 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:55:23" (3/4) ... [2023-11-26 11:55:33,710 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-26 11:55:33,714 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-26 11:55:33,714 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-26 11:55:33,714 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-11-26 11:55:33,720 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 34 nodes and edges [2023-11-26 11:55:33,720 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2023-11-26 11:55:33,720 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-26 11:55:33,721 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-26 11:55:33,812 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2356fcd9-cfa5-48da-8b27-6425c432d48c/bin/uautomizer-verify-VRDe98Ueme/witness.graphml [2023-11-26 11:55:33,812 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2356fcd9-cfa5-48da-8b27-6425c432d48c/bin/uautomizer-verify-VRDe98Ueme/witness.yml [2023-11-26 11:55:33,813 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 11:55:33,813 INFO L158 Benchmark]: Toolchain (without parser) took 11588.73ms. Allocated memory was 163.6MB in the beginning and 574.6MB in the end (delta: 411.0MB). Free memory was 121.6MB in the beginning and 358.9MB in the end (delta: -237.3MB). Peak memory consumption was 176.3MB. Max. memory is 16.1GB. [2023-11-26 11:55:33,814 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 132.1MB. Free memory is still 77.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:55:33,814 INFO L158 Benchmark]: CACSL2BoogieTranslator took 624.46ms. Allocated memory is still 163.6MB. Free memory was 121.1MB in the beginning and 100.7MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-26 11:55:33,815 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.64ms. Allocated memory is still 163.6MB. Free memory was 100.2MB in the beginning and 98.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 11:55:33,815 INFO L158 Benchmark]: Boogie Preprocessor took 48.88ms. Allocated memory is still 163.6MB. Free memory was 98.6MB in the beginning and 96.0MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 11:55:33,816 INFO L158 Benchmark]: RCFGBuilder took 654.11ms. Allocated memory is still 163.6MB. Free memory was 96.0MB in the beginning and 121.7MB in the end (delta: -25.8MB). Peak memory consumption was 16.1MB. Max. memory is 16.1GB. [2023-11-26 11:55:33,816 INFO L158 Benchmark]: TraceAbstraction took 10099.53ms. Allocated memory was 163.6MB in the beginning and 574.6MB in the end (delta: 411.0MB). Free memory was 120.8MB in the beginning and 363.1MB in the end (delta: -242.3MB). Peak memory consumption was 265.1MB. Max. memory is 16.1GB. [2023-11-26 11:55:33,817 INFO L158 Benchmark]: Witness Printer took 106.05ms. Allocated memory is still 574.6MB. Free memory was 363.1MB in the beginning and 358.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-26 11:55:33,819 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 132.1MB. Free memory is still 77.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 624.46ms. Allocated memory is still 163.6MB. Free memory was 121.1MB in the beginning and 100.7MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.64ms. Allocated memory is still 163.6MB. Free memory was 100.2MB in the beginning and 98.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.88ms. Allocated memory is still 163.6MB. Free memory was 98.6MB in the beginning and 96.0MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 654.11ms. Allocated memory is still 163.6MB. Free memory was 96.0MB in the beginning and 121.7MB in the end (delta: -25.8MB). Peak memory consumption was 16.1MB. Max. memory is 16.1GB. * TraceAbstraction took 10099.53ms. Allocated memory was 163.6MB in the beginning and 574.6MB in the end (delta: 411.0MB). Free memory was 120.8MB in the beginning and 363.1MB in the end (delta: -242.3MB). Peak memory consumption was 265.1MB. Max. memory is 16.1GB. * Witness Printer took 106.05ms. Allocated memory is still 574.6MB. Free memory was 363.1MB in the beginning and 358.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 62 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 10.0s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 7.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 459 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 395 mSDsluCounter, 417 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 291 mSDsCounter, 40 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 944 IncrementalHoareTripleChecker+Invalid, 984 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 40 mSolverCounterUnsat, 126 mSDtfsCounter, 944 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 82 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=726occurred in iteration=5, InterpolantAutomatonStates: 76, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 190 NumberOfCodeBlocks, 190 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 180 ConstructedInterpolants, 0 QuantifiedInterpolants, 708 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-26 11:55:33,846 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2356fcd9-cfa5-48da-8b27-6425c432d48c/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE