./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-atomic/szymanski.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_26ad07a6-d083-4d7b-b41c-de03e04b6d2e/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ad07a6-d083-4d7b-b41c-de03e04b6d2e/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ad07a6-d083-4d7b-b41c-de03e04b6d2e/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ad07a6-d083-4d7b-b41c-de03e04b6d2e/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-atomic/szymanski.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ad07a6-d083-4d7b-b41c-de03e04b6d2e/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ad07a6-d083-4d7b-b41c-de03e04b6d2e/bin/uautomizer-verify-NlZe1sFDwI --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 bc84ca2197caec735a8480f9d61b820c686ed9ae52711f2c7500999694c2ad40 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:46:16,198 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:46:16,325 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ad07a6-d083-4d7b-b41c-de03e04b6d2e/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-24 21:46:16,332 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:46:16,333 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:46:16,375 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:46:16,376 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:46:16,377 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:46:16,378 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:46:16,383 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:46:16,384 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:46:16,385 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:46:16,385 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:46:16,387 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:46:16,388 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:46:16,388 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:46:16,388 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 21:46:16,389 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:46:16,389 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:46:16,390 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:46:16,391 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:46:16,392 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 21:46:16,392 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:46:16,393 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 21:46:16,393 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:46:16,394 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 21:46:16,394 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:46:16,395 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:46:16,395 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:46:16,396 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:46:16,397 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:46:16,397 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:46:16,398 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:46:16,398 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:46:16,398 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 21:46:16,398 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:46:16,399 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:46:16,399 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:46:16,399 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:46:16,399 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 21:46:16,400 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:46:16,400 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:46:16,400 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_26ad07a6-d083-4d7b-b41c-de03e04b6d2e/bin/uautomizer-verify-NlZe1sFDwI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ad07a6-d083-4d7b-b41c-de03e04b6d2e/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bc84ca2197caec735a8480f9d61b820c686ed9ae52711f2c7500999694c2ad40 [2023-11-24 21:46:16,690 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:46:16,711 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:46:16,714 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:46:16,715 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:46:16,716 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:46:16,717 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ad07a6-d083-4d7b-b41c-de03e04b6d2e/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/pthread-atomic/szymanski.i [2023-11-24 21:46:20,100 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:46:20,381 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:46:20,395 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ad07a6-d083-4d7b-b41c-de03e04b6d2e/sv-benchmarks/c/pthread-atomic/szymanski.i [2023-11-24 21:46:20,420 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ad07a6-d083-4d7b-b41c-de03e04b6d2e/bin/uautomizer-verify-NlZe1sFDwI/data/8e93ec301/870fc4d6c7084542a85eed8fab0d27c9/FLAG6c94b96d6 [2023-11-24 21:46:20,440 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ad07a6-d083-4d7b-b41c-de03e04b6d2e/bin/uautomizer-verify-NlZe1sFDwI/data/8e93ec301/870fc4d6c7084542a85eed8fab0d27c9 [2023-11-24 21:46:20,446 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:46:20,448 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:46:20,452 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:46:20,452 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:46:20,458 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:46:20,459 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:46:20" (1/1) ... [2023-11-24 21:46:20,461 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63e29789 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:46:20, skipping insertion in model container [2023-11-24 21:46:20,461 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:46:20" (1/1) ... [2023-11-24 21:46:20,540 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:46:20,973 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_26ad07a6-d083-4d7b-b41c-de03e04b6d2e/sv-benchmarks/c/pthread-atomic/szymanski.i[31505,31518] [2023-11-24 21:46:20,985 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_26ad07a6-d083-4d7b-b41c-de03e04b6d2e/sv-benchmarks/c/pthread-atomic/szymanski.i[32915,32928] [2023-11-24 21:46:20,995 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:46:21,009 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:46:21,066 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_26ad07a6-d083-4d7b-b41c-de03e04b6d2e/sv-benchmarks/c/pthread-atomic/szymanski.i[31505,31518] [2023-11-24 21:46:21,071 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_26ad07a6-d083-4d7b-b41c-de03e04b6d2e/sv-benchmarks/c/pthread-atomic/szymanski.i[32915,32928] [2023-11-24 21:46:21,082 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:46:21,119 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:46:21,120 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:46:21,128 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:46:21,129 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:46:21 WrapperNode [2023-11-24 21:46:21,130 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:46:21,131 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:46:21,132 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:46:21,132 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:46:21,140 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:46:21" (1/1) ... [2023-11-24 21:46:21,170 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:46:21" (1/1) ... [2023-11-24 21:46:21,192 INFO L138 Inliner]: procedures = 170, calls = 74, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 41 [2023-11-24 21:46:21,193 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:46:21,193 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:46:21,194 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:46:21,194 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:46:21,209 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:46:21" (1/1) ... [2023-11-24 21:46:21,210 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:46:21" (1/1) ... [2023-11-24 21:46:21,222 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:46:21" (1/1) ... [2023-11-24 21:46:21,245 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2023-11-24 21:46:21,245 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:46:21" (1/1) ... [2023-11-24 21:46:21,245 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:46:21" (1/1) ... [2023-11-24 21:46:21,254 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:46:21" (1/1) ... [2023-11-24 21:46:21,259 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:46:21" (1/1) ... [2023-11-24 21:46:21,261 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:46:21" (1/1) ... [2023-11-24 21:46:21,263 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:46:21" (1/1) ... [2023-11-24 21:46:21,271 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:46:21,272 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:46:21,273 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:46:21,273 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:46:21,274 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:46:21" (1/1) ... [2023-11-24 21:46:21,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:46:21,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ad07a6-d083-4d7b-b41c-de03e04b6d2e/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:46:21,310 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ad07a6-d083-4d7b-b41c-de03e04b6d2e/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:46:21,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ad07a6-d083-4d7b-b41c-de03e04b6d2e/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:46:21,345 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-24 21:46:21,345 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-24 21:46:21,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-24 21:46:21,346 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2023-11-24 21:46:21,346 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2023-11-24 21:46:21,346 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-24 21:46:21,347 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-24 21:46:21,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-24 21:46:21,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-24 21:46:21,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-24 21:46:21,347 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-24 21:46:21,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:46:21,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 21:46:21,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 21:46:21,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 21:46:21,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-24 21:46:21,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-24 21:46:21,349 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-24 21:46:21,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:46:21,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:46:21,351 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-24 21:46:21,498 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:46:21,500 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:46:21,766 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:46:21,881 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:46:21,881 INFO L309 CfgBuilder]: Removed 8 assume(true) statements. [2023-11-24 21:46:21,882 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:46:21 BoogieIcfgContainer [2023-11-24 21:46:21,882 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:46:21,885 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:46:21,885 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:46:21,888 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:46:21,889 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:46:20" (1/3) ... [2023-11-24 21:46:21,890 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@780392f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:46:21, skipping insertion in model container [2023-11-24 21:46:21,890 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:46:21" (2/3) ... [2023-11-24 21:46:21,890 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@780392f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:46:21, skipping insertion in model container [2023-11-24 21:46:21,890 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:46:21" (3/3) ... [2023-11-24 21:46:21,892 INFO L112 eAbstractionObserver]: Analyzing ICFG szymanski.i [2023-11-24 21:46:21,901 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-24 21:46:21,913 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:46:21,914 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-24 21:46:21,914 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 21:46:21,995 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-24 21:46:22,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 71 transitions, 156 flow [2023-11-24 21:46:22,082 INFO L124 PetriNetUnfolderBase]: 12/69 cut-off events. [2023-11-24 21:46:22,082 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-24 21:46:22,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 69 events. 12/69 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 128 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 65. Up to 2 conditions per place. [2023-11-24 21:46:22,088 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 71 transitions, 156 flow [2023-11-24 21:46:22,093 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 67 transitions, 143 flow [2023-11-24 21:46:22,114 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:46:22,125 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;@caa235, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:46:22,126 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-24 21:46:22,152 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-24 21:46:22,152 INFO L124 PetriNetUnfolderBase]: 7/43 cut-off events. [2023-11-24 21:46:22,152 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:46:22,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:46:22,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:46:22,154 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-24 21:46:22,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:46:22,160 INFO L85 PathProgramCache]: Analyzing trace with hash -481980936, now seen corresponding path program 1 times [2023-11-24 21:46:22,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:46:22,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840873063] [2023-11-24 21:46:22,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:46:22,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:46:22,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:46:22,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:46:22,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:46:22,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840873063] [2023-11-24 21:46:22,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840873063] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:46:22,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:46:22,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:46:22,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280915898] [2023-11-24 21:46:22,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:46:22,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:46:22,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:46:22,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:46:22,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:46:22,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 71 [2023-11-24 21:46:22,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 67 transitions, 143 flow. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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) [2023-11-24 21:46:22,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:46:22,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 71 [2023-11-24 21:46:22,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:46:22,908 INFO L124 PetriNetUnfolderBase]: 217/578 cut-off events. [2023-11-24 21:46:22,909 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2023-11-24 21:46:22,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 921 conditions, 578 events. 217/578 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 3278 event pairs, 57 based on Foata normal form. 55/581 useless extension candidates. Maximal degree in co-relation 808. Up to 168 conditions per place. [2023-11-24 21:46:22,923 INFO L140 encePairwiseOnDemand]: 64/71 looper letters, 25 selfloop transitions, 3 changer transitions 1/75 dead transitions. [2023-11-24 21:46:22,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 75 transitions, 220 flow [2023-11-24 21:46:22,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:46:22,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:46:22,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 178 transitions. [2023-11-24 21:46:22,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8356807511737089 [2023-11-24 21:46:22,943 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 178 transitions. [2023-11-24 21:46:22,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 178 transitions. [2023-11-24 21:46:22,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:46:22,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 178 transitions. [2023-11-24 21:46:22,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 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) [2023-11-24 21:46:22,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 71.0) internal successors, (284), 4 states have internal predecessors, (284), 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) [2023-11-24 21:46:22,956 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 71.0) internal successors, (284), 4 states have internal predecessors, (284), 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) [2023-11-24 21:46:22,958 INFO L175 Difference]: Start difference. First operand has 62 places, 67 transitions, 143 flow. Second operand 3 states and 178 transitions. [2023-11-24 21:46:22,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 75 transitions, 220 flow [2023-11-24 21:46:22,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 75 transitions, 213 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-24 21:46:22,967 INFO L231 Difference]: Finished difference. Result has 63 places, 66 transitions, 154 flow [2023-11-24 21:46:22,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=63, PETRI_TRANSITIONS=66} [2023-11-24 21:46:22,973 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 1 predicate places. [2023-11-24 21:46:22,973 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 66 transitions, 154 flow [2023-11-24 21:46:22,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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) [2023-11-24 21:46:22,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:46:22,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:46:22,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 21:46:22,975 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-24 21:46:22,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:46:22,975 INFO L85 PathProgramCache]: Analyzing trace with hash -154974577, now seen corresponding path program 1 times [2023-11-24 21:46:22,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:46:22,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502823131] [2023-11-24 21:46:22,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:46:22,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:46:22,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:46:23,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:46:23,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:46:23,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502823131] [2023-11-24 21:46:23,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502823131] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:46:23,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:46:23,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:46:23,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985608581] [2023-11-24 21:46:23,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:46:23,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:46:23,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:46:23,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:46:23,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:46:23,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 71 [2023-11-24 21:46:23,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 66 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 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) [2023-11-24 21:46:23,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:46:23,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 71 [2023-11-24 21:46:23,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:46:23,239 INFO L124 PetriNetUnfolderBase]: 235/607 cut-off events. [2023-11-24 21:46:23,240 INFO L125 PetriNetUnfolderBase]: For 137/137 co-relation queries the response was YES. [2023-11-24 21:46:23,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1088 conditions, 607 events. 235/607 cut-off events. For 137/137 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3416 event pairs, 81 based on Foata normal form. 22/591 useless extension candidates. Maximal degree in co-relation 406. Up to 227 conditions per place. [2023-11-24 21:46:23,248 INFO L140 encePairwiseOnDemand]: 67/71 looper letters, 23 selfloop transitions, 2 changer transitions 4/75 dead transitions. [2023-11-24 21:46:23,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 75 transitions, 231 flow [2023-11-24 21:46:23,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:46:23,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:46:23,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 175 transitions. [2023-11-24 21:46:23,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8215962441314554 [2023-11-24 21:46:23,257 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 175 transitions. [2023-11-24 21:46:23,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 175 transitions. [2023-11-24 21:46:23,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:46:23,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 175 transitions. [2023-11-24 21:46:23,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 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) [2023-11-24 21:46:23,267 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 71.0) internal successors, (284), 4 states have internal predecessors, (284), 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) [2023-11-24 21:46:23,268 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 71.0) internal successors, (284), 4 states have internal predecessors, (284), 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) [2023-11-24 21:46:23,268 INFO L175 Difference]: Start difference. First operand has 63 places, 66 transitions, 154 flow. Second operand 3 states and 175 transitions. [2023-11-24 21:46:23,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 75 transitions, 231 flow [2023-11-24 21:46:23,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 75 transitions, 225 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:46:23,277 INFO L231 Difference]: Finished difference. Result has 64 places, 66 transitions, 158 flow [2023-11-24 21:46:23,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=64, PETRI_TRANSITIONS=66} [2023-11-24 21:46:23,284 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 2 predicate places. [2023-11-24 21:46:23,284 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 66 transitions, 158 flow [2023-11-24 21:46:23,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 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) [2023-11-24 21:46:23,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:46:23,285 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] [2023-11-24 21:46:23,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 21:46:23,286 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-24 21:46:23,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:46:23,288 INFO L85 PathProgramCache]: Analyzing trace with hash 395763993, now seen corresponding path program 1 times [2023-11-24 21:46:23,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:46:23,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142496203] [2023-11-24 21:46:23,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:46:23,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:46:23,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:46:23,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:46:23,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:46:23,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142496203] [2023-11-24 21:46:23,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142496203] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:46:23,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:46:23,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:46:23,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611085600] [2023-11-24 21:46:23,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:46:23,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:46:23,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:46:23,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:46:23,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:46:23,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 71 [2023-11-24 21:46:23,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 66 transitions, 158 flow. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 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) [2023-11-24 21:46:23,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:46:23,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 71 [2023-11-24 21:46:23,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:46:23,863 INFO L124 PetriNetUnfolderBase]: 822/1693 cut-off events. [2023-11-24 21:46:23,864 INFO L125 PetriNetUnfolderBase]: For 261/261 co-relation queries the response was YES. [2023-11-24 21:46:23,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3180 conditions, 1693 events. 822/1693 cut-off events. For 261/261 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 9867 event pairs, 333 based on Foata normal form. 36/1648 useless extension candidates. Maximal degree in co-relation 2673. Up to 729 conditions per place. [2023-11-24 21:46:23,876 INFO L140 encePairwiseOnDemand]: 54/71 looper letters, 45 selfloop transitions, 7 changer transitions 30/113 dead transitions. [2023-11-24 21:46:23,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 113 transitions, 431 flow [2023-11-24 21:46:23,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:46:23,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-24 21:46:23,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 255 transitions. [2023-11-24 21:46:23,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7183098591549296 [2023-11-24 21:46:23,880 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 255 transitions. [2023-11-24 21:46:23,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 255 transitions. [2023-11-24 21:46:23,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:46:23,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 255 transitions. [2023-11-24 21:46:23,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 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) [2023-11-24 21:46:23,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 71.0) internal successors, (426), 6 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:23,884 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 71.0) internal successors, (426), 6 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:23,885 INFO L175 Difference]: Start difference. First operand has 64 places, 66 transitions, 158 flow. Second operand 5 states and 255 transitions. [2023-11-24 21:46:23,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 113 transitions, 431 flow [2023-11-24 21:46:23,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 113 transitions, 427 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:46:23,890 INFO L231 Difference]: Finished difference. Result has 70 places, 70 transitions, 232 flow [2023-11-24 21:46:23,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=232, PETRI_PLACES=70, PETRI_TRANSITIONS=70} [2023-11-24 21:46:23,892 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 8 predicate places. [2023-11-24 21:46:23,892 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 70 transitions, 232 flow [2023-11-24 21:46:23,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 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) [2023-11-24 21:46:23,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:46:23,893 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] [2023-11-24 21:46:23,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 21:46:23,894 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-24 21:46:23,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:46:23,895 INFO L85 PathProgramCache]: Analyzing trace with hash -868945097, now seen corresponding path program 2 times [2023-11-24 21:46:23,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:46:23,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328030926] [2023-11-24 21:46:23,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:46:23,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:46:23,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:46:23,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:46:23,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:46:23,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328030926] [2023-11-24 21:46:23,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328030926] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:46:23,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:46:23,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:46:23,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969607465] [2023-11-24 21:46:23,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:46:23,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:46:23,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:46:23,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:46:23,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:46:24,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 71 [2023-11-24 21:46:24,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 70 transitions, 232 flow. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:24,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:46:24,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 71 [2023-11-24 21:46:24,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:46:24,421 INFO L124 PetriNetUnfolderBase]: 1139/2314 cut-off events. [2023-11-24 21:46:24,421 INFO L125 PetriNetUnfolderBase]: For 1045/1079 co-relation queries the response was YES. [2023-11-24 21:46:24,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5166 conditions, 2314 events. 1139/2314 cut-off events. For 1045/1079 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 14264 event pairs, 537 based on Foata normal form. 30/2195 useless extension candidates. Maximal degree in co-relation 4402. Up to 1189 conditions per place. [2023-11-24 21:46:24,440 INFO L140 encePairwiseOnDemand]: 54/71 looper letters, 54 selfloop transitions, 13 changer transitions 26/126 dead transitions. [2023-11-24 21:46:24,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 126 transitions, 556 flow [2023-11-24 21:46:24,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:46:24,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-24 21:46:24,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 257 transitions. [2023-11-24 21:46:24,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.723943661971831 [2023-11-24 21:46:24,442 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 257 transitions. [2023-11-24 21:46:24,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 257 transitions. [2023-11-24 21:46:24,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:46:24,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 257 transitions. [2023-11-24 21:46:24,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 51.4) internal successors, (257), 5 states have internal predecessors, (257), 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) [2023-11-24 21:46:24,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 71.0) internal successors, (426), 6 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:24,446 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 71.0) internal successors, (426), 6 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:24,447 INFO L175 Difference]: Start difference. First operand has 70 places, 70 transitions, 232 flow. Second operand 5 states and 257 transitions. [2023-11-24 21:46:24,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 126 transitions, 556 flow [2023-11-24 21:46:24,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 126 transitions, 530 flow, removed 13 selfloop flow, removed 0 redundant places. [2023-11-24 21:46:24,460 INFO L231 Difference]: Finished difference. Result has 78 places, 81 transitions, 334 flow [2023-11-24 21:46:24,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=334, PETRI_PLACES=78, PETRI_TRANSITIONS=81} [2023-11-24 21:46:24,462 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 16 predicate places. [2023-11-24 21:46:24,462 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 81 transitions, 334 flow [2023-11-24 21:46:24,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:24,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:46:24,463 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] [2023-11-24 21:46:24,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 21:46:24,463 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-24 21:46:24,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:46:24,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1321356289, now seen corresponding path program 3 times [2023-11-24 21:46:24,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:46:24,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148127527] [2023-11-24 21:46:24,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:46:24,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:46:24,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:46:24,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:46:24,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:46:24,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148127527] [2023-11-24 21:46:24,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148127527] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:46:24,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:46:24,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:46:24,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260089700] [2023-11-24 21:46:24,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:46:24,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:46:24,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:46:24,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:46:24,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:46:24,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 71 [2023-11-24 21:46:24,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 81 transitions, 334 flow. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:24,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:46:24,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 71 [2023-11-24 21:46:24,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:46:25,049 INFO L124 PetriNetUnfolderBase]: 1221/2625 cut-off events. [2023-11-24 21:46:25,050 INFO L125 PetriNetUnfolderBase]: For 1444/1457 co-relation queries the response was YES. [2023-11-24 21:46:25,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6471 conditions, 2625 events. 1221/2625 cut-off events. For 1444/1457 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 17622 event pairs, 495 based on Foata normal form. 62/2582 useless extension candidates. Maximal degree in co-relation 3747. Up to 1182 conditions per place. [2023-11-24 21:46:25,076 INFO L140 encePairwiseOnDemand]: 54/71 looper letters, 74 selfloop transitions, 20 changer transitions 2/136 dead transitions. [2023-11-24 21:46:25,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 136 transitions, 717 flow [2023-11-24 21:46:25,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:46:25,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-24 21:46:25,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 253 transitions. [2023-11-24 21:46:25,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7126760563380282 [2023-11-24 21:46:25,078 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 253 transitions. [2023-11-24 21:46:25,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 253 transitions. [2023-11-24 21:46:25,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:46:25,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 253 transitions. [2023-11-24 21:46:25,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 50.6) internal successors, (253), 5 states have internal predecessors, (253), 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) [2023-11-24 21:46:25,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 71.0) internal successors, (426), 6 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:25,082 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 71.0) internal successors, (426), 6 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:25,082 INFO L175 Difference]: Start difference. First operand has 78 places, 81 transitions, 334 flow. Second operand 5 states and 253 transitions. [2023-11-24 21:46:25,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 136 transitions, 717 flow [2023-11-24 21:46:25,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 136 transitions, 707 flow, removed 5 selfloop flow, removed 0 redundant places. [2023-11-24 21:46:25,098 INFO L231 Difference]: Finished difference. Result has 86 places, 99 transitions, 525 flow [2023-11-24 21:46:25,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=525, PETRI_PLACES=86, PETRI_TRANSITIONS=99} [2023-11-24 21:46:25,100 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 24 predicate places. [2023-11-24 21:46:25,100 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 99 transitions, 525 flow [2023-11-24 21:46:25,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:25,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:46:25,101 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] [2023-11-24 21:46:25,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 21:46:25,101 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-24 21:46:25,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:46:25,102 INFO L85 PathProgramCache]: Analyzing trace with hash 2005077507, now seen corresponding path program 4 times [2023-11-24 21:46:25,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:46:25,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280458807] [2023-11-24 21:46:25,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:46:25,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:46:25,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:46:25,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:46:25,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:46:25,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280458807] [2023-11-24 21:46:25,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280458807] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:46:25,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:46:25,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:46:25,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006253032] [2023-11-24 21:46:25,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:46:25,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:46:25,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:46:25,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:46:25,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:46:25,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 71 [2023-11-24 21:46:25,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 99 transitions, 525 flow. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 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) [2023-11-24 21:46:25,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:46:25,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 71 [2023-11-24 21:46:25,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:46:25,702 INFO L124 PetriNetUnfolderBase]: 1301/2906 cut-off events. [2023-11-24 21:46:25,703 INFO L125 PetriNetUnfolderBase]: For 3879/3977 co-relation queries the response was YES. [2023-11-24 21:46:25,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8170 conditions, 2906 events. 1301/2906 cut-off events. For 3879/3977 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 20408 event pairs, 401 based on Foata normal form. 84/2950 useless extension candidates. Maximal degree in co-relation 5572. Up to 1017 conditions per place. [2023-11-24 21:46:25,734 INFO L140 encePairwiseOnDemand]: 53/71 looper letters, 74 selfloop transitions, 35 changer transitions 6/158 dead transitions. [2023-11-24 21:46:25,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 158 transitions, 1070 flow [2023-11-24 21:46:25,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:46:25,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-24 21:46:25,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 260 transitions. [2023-11-24 21:46:25,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7323943661971831 [2023-11-24 21:46:25,736 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 260 transitions. [2023-11-24 21:46:25,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 260 transitions. [2023-11-24 21:46:25,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:46:25,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 260 transitions. [2023-11-24 21:46:25,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 52.0) internal successors, (260), 5 states have internal predecessors, (260), 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) [2023-11-24 21:46:25,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 71.0) internal successors, (426), 6 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:25,740 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 71.0) internal successors, (426), 6 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:25,740 INFO L175 Difference]: Start difference. First operand has 86 places, 99 transitions, 525 flow. Second operand 5 states and 260 transitions. [2023-11-24 21:46:25,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 158 transitions, 1070 flow [2023-11-24 21:46:25,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 158 transitions, 1054 flow, removed 8 selfloop flow, removed 0 redundant places. [2023-11-24 21:46:25,761 INFO L231 Difference]: Finished difference. Result has 94 places, 126 transitions, 894 flow [2023-11-24 21:46:25,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=509, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=894, PETRI_PLACES=94, PETRI_TRANSITIONS=126} [2023-11-24 21:46:25,763 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 32 predicate places. [2023-11-24 21:46:25,763 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 126 transitions, 894 flow [2023-11-24 21:46:25,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 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) [2023-11-24 21:46:25,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:46:25,764 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] [2023-11-24 21:46:25,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-24 21:46:25,764 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-24 21:46:25,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:46:25,765 INFO L85 PathProgramCache]: Analyzing trace with hash 814619717, now seen corresponding path program 5 times [2023-11-24 21:46:25,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:46:25,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891979552] [2023-11-24 21:46:25,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:46:25,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:46:25,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:46:25,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:46:25,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:46:25,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891979552] [2023-11-24 21:46:25,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891979552] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:46:25,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:46:25,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:46:25,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255667296] [2023-11-24 21:46:25,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:46:25,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:46:25,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:46:25,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:46:25,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:46:25,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 71 [2023-11-24 21:46:25,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 126 transitions, 894 flow. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 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) [2023-11-24 21:46:25,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:46:25,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 71 [2023-11-24 21:46:25,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:46:26,509 INFO L124 PetriNetUnfolderBase]: 1437/3046 cut-off events. [2023-11-24 21:46:26,510 INFO L125 PetriNetUnfolderBase]: For 6429/6540 co-relation queries the response was YES. [2023-11-24 21:46:26,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9701 conditions, 3046 events. 1437/3046 cut-off events. For 6429/6540 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 20679 event pairs, 543 based on Foata normal form. 152/3087 useless extension candidates. Maximal degree in co-relation 6405. Up to 1401 conditions per place. [2023-11-24 21:46:26,529 INFO L140 encePairwiseOnDemand]: 54/71 looper letters, 0 selfloop transitions, 0 changer transitions 170/170 dead transitions. [2023-11-24 21:46:26,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 170 transitions, 1253 flow [2023-11-24 21:46:26,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:46:26,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-24 21:46:26,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 257 transitions. [2023-11-24 21:46:26,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.723943661971831 [2023-11-24 21:46:26,532 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 257 transitions. [2023-11-24 21:46:26,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 257 transitions. [2023-11-24 21:46:26,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:46:26,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 257 transitions. [2023-11-24 21:46:26,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 51.4) internal successors, (257), 5 states have internal predecessors, (257), 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) [2023-11-24 21:46:26,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 71.0) internal successors, (426), 6 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:26,535 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 71.0) internal successors, (426), 6 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:26,535 INFO L175 Difference]: Start difference. First operand has 94 places, 126 transitions, 894 flow. Second operand 5 states and 257 transitions. [2023-11-24 21:46:26,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 170 transitions, 1253 flow [2023-11-24 21:46:26,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 170 transitions, 1236 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-11-24 21:46:26,571 INFO L231 Difference]: Finished difference. Result has 93 places, 0 transitions, 0 flow [2023-11-24 21:46:26,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=814, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=93, PETRI_TRANSITIONS=0} [2023-11-24 21:46:26,572 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 31 predicate places. [2023-11-24 21:46:26,572 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 0 transitions, 0 flow [2023-11-24 21:46:26,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 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) [2023-11-24 21:46:26,575 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-11-24 21:46:26,576 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-11-24 21:46:26,576 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-11-24 21:46:26,577 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2023-11-24 21:46:26,577 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-11-24 21:46:26,577 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-11-24 21:46:26,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-24 21:46:26,578 INFO L445 BasicCegarLoop]: Path program histogram: [5, 1, 1] [2023-11-24 21:46:26,583 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-24 21:46:26,584 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-24 21:46:26,590 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 09:46:26 BasicIcfg [2023-11-24 21:46:26,591 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-24 21:46:26,591 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 21:46:26,591 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 21:46:26,592 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 21:46:26,592 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:46:21" (3/4) ... [2023-11-24 21:46:26,594 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-24 21:46:26,597 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2023-11-24 21:46:26,597 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2023-11-24 21:46:26,601 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 32 nodes and edges [2023-11-24 21:46:26,602 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2023-11-24 21:46:26,602 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-24 21:46:26,602 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-24 21:46:26,684 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ad07a6-d083-4d7b-b41c-de03e04b6d2e/bin/uautomizer-verify-NlZe1sFDwI/witness.graphml [2023-11-24 21:46:26,685 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ad07a6-d083-4d7b-b41c-de03e04b6d2e/bin/uautomizer-verify-NlZe1sFDwI/witness.yml [2023-11-24 21:46:26,685 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 21:46:26,686 INFO L158 Benchmark]: Toolchain (without parser) took 6237.90ms. Allocated memory was 157.3MB in the beginning and 192.9MB in the end (delta: 35.7MB). Free memory was 115.8MB in the beginning and 117.4MB in the end (delta: -1.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2023-11-24 21:46:26,687 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 109.1MB. Free memory is still 61.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 21:46:26,687 INFO L158 Benchmark]: CACSL2BoogieTranslator took 677.94ms. Allocated memory is still 157.3MB. Free memory was 115.4MB in the beginning and 94.6MB in the end (delta: 20.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-24 21:46:26,688 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.97ms. Allocated memory is still 157.3MB. Free memory was 94.6MB in the beginning and 92.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 21:46:26,688 INFO L158 Benchmark]: Boogie Preprocessor took 78.14ms. Allocated memory is still 157.3MB. Free memory was 92.7MB in the beginning and 90.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 21:46:26,689 INFO L158 Benchmark]: RCFGBuilder took 609.70ms. Allocated memory is still 157.3MB. Free memory was 90.2MB in the beginning and 69.6MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-24 21:46:26,689 INFO L158 Benchmark]: TraceAbstraction took 4706.09ms. Allocated memory was 157.3MB in the beginning and 192.9MB in the end (delta: 35.7MB). Free memory was 68.7MB in the beginning and 121.6MB in the end (delta: -53.0MB). Peak memory consumption was 75.5MB. Max. memory is 16.1GB. [2023-11-24 21:46:26,690 INFO L158 Benchmark]: Witness Printer took 94.21ms. Allocated memory is still 192.9MB. Free memory was 121.6MB in the beginning and 117.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-24 21:46:26,692 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 109.1MB. Free memory is still 61.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 677.94ms. Allocated memory is still 157.3MB. Free memory was 115.4MB in the beginning and 94.6MB in the end (delta: 20.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.97ms. Allocated memory is still 157.3MB. Free memory was 94.6MB in the beginning and 92.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 78.14ms. Allocated memory is still 157.3MB. Free memory was 92.7MB in the beginning and 90.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 609.70ms. Allocated memory is still 157.3MB. Free memory was 90.2MB in the beginning and 69.6MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 4706.09ms. Allocated memory was 157.3MB in the beginning and 192.9MB in the end (delta: 35.7MB). Free memory was 68.7MB in the beginning and 121.6MB in the end (delta: -53.0MB). Peak memory consumption was 75.5MB. Max. memory is 16.1GB. * Witness Printer took 94.21ms. Allocated memory is still 192.9MB. Free memory was 121.6MB in the beginning and 117.4MB 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: 802]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 745]: 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 5 procedures, 112 locations, 6 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: 4.5s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 373 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 272 mSDsluCounter, 129 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 57 mSDsCounter, 93 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 835 IncrementalHoareTripleChecker+Invalid, 928 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 93 mSolverCounterUnsat, 72 mSDtfsCounter, 835 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=894occurred in iteration=6, InterpolantAutomatonStates: 31, 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, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 160 NumberOfCodeBlocks, 160 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 153 ConstructedInterpolants, 0 QuantifiedInterpolants, 223 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-24 21:46:26,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ad07a6-d083-4d7b-b41c-de03e04b6d2e/bin/uautomizer-verify-NlZe1sFDwI/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