./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe035_power.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3ad6e-1a6d-442c-9a3f-c91b774a0059/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3ad6e-1a6d-442c-9a3f-c91b774a0059/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3ad6e-1a6d-442c-9a3f-c91b774a0059/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3ad6e-1a6d-442c-9a3f-c91b774a0059/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe035_power.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3ad6e-1a6d-442c-9a3f-c91b774a0059/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3ad6e-1a6d-442c-9a3f-c91b774a0059/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6415bffc70cf05f8f6460106962f2f9c59b321fd2fc94a45894cc3c1f3d85b66 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 12:02:14,199 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 12:02:14,323 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3ad6e-1a6d-442c-9a3f-c91b774a0059/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 12:02:14,329 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 12:02:14,335 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 12:02:14,379 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 12:02:14,380 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 12:02:14,381 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 12:02:14,382 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 12:02:14,387 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 12:02:14,387 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 12:02:14,389 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 12:02:14,389 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 12:02:14,391 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 12:02:14,392 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 12:02:14,392 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 12:02:14,393 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 12:02:14,393 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 12:02:14,394 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 12:02:14,394 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 12:02:14,394 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 12:02:14,395 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 12:02:14,395 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 12:02:14,396 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 12:02:14,396 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 12:02:14,397 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 12:02:14,397 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 12:02:14,398 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 12:02:14,399 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 12:02:14,399 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 12:02:14,400 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 12:02:14,401 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:02:14,401 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 12:02:14,401 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 12:02:14,402 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 12:02:14,402 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 12:02:14,402 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 12:02:14,402 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 12:02:14,403 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 12:02:14,403 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 12:02:14,403 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 12:02:14,404 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 12:02:14,404 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_0ac3ad6e-1a6d-442c-9a3f-c91b774a0059/bin/uautomizer-verify-VRDe98Ueme/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3ad6e-1a6d-442c-9a3f-c91b774a0059/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6415bffc70cf05f8f6460106962f2f9c59b321fd2fc94a45894cc3c1f3d85b66 [2023-11-26 12:02:14,725 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 12:02:14,755 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 12:02:14,758 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 12:02:14,760 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 12:02:14,760 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 12:02:14,762 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3ad6e-1a6d-442c-9a3f-c91b774a0059/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/pthread-wmm/safe035_power.i [2023-11-26 12:02:17,940 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 12:02:18,305 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 12:02:18,306 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3ad6e-1a6d-442c-9a3f-c91b774a0059/sv-benchmarks/c/pthread-wmm/safe035_power.i [2023-11-26 12:02:18,337 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3ad6e-1a6d-442c-9a3f-c91b774a0059/bin/uautomizer-verify-VRDe98Ueme/data/606164005/7c72a65d21b944bebe48b94d425d3abe/FLAGc19bef456 [2023-11-26 12:02:18,355 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3ad6e-1a6d-442c-9a3f-c91b774a0059/bin/uautomizer-verify-VRDe98Ueme/data/606164005/7c72a65d21b944bebe48b94d425d3abe [2023-11-26 12:02:18,361 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 12:02:18,362 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 12:02:18,366 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 12:02:18,366 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 12:02:18,372 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 12:02:18,373 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:02:18" (1/1) ... [2023-11-26 12:02:18,374 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e8a89d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:18, skipping insertion in model container [2023-11-26 12:02:18,375 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:02:18" (1/1) ... [2023-11-26 12:02:18,445 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:02:18,643 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_0ac3ad6e-1a6d-442c-9a3f-c91b774a0059/sv-benchmarks/c/pthread-wmm/safe035_power.i[947,960] [2023-11-26 12:02:18,960 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:02:18,971 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 12:02:18,990 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3ad6e-1a6d-442c-9a3f-c91b774a0059/sv-benchmarks/c/pthread-wmm/safe035_power.i[947,960] [2023-11-26 12:02:19,103 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:02:19,145 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:02:19,146 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:02:19,154 INFO L206 MainTranslator]: Completed translation [2023-11-26 12:02:19,155 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:19 WrapperNode [2023-11-26 12:02:19,155 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 12:02:19,156 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 12:02:19,157 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 12:02:19,157 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 12:02:19,165 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:19" (1/1) ... [2023-11-26 12:02:19,215 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:19" (1/1) ... [2023-11-26 12:02:19,265 INFO L138 Inliner]: procedures = 176, calls = 60, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 172 [2023-11-26 12:02:19,266 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 12:02:19,266 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 12:02:19,266 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 12:02:19,267 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 12:02:19,278 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:19" (1/1) ... [2023-11-26 12:02:19,278 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:19" (1/1) ... [2023-11-26 12:02:19,283 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:19" (1/1) ... [2023-11-26 12:02:19,303 INFO L175 MemorySlicer]: Split 5 memory accesses to 4 slices as follows [2, 1, 1, 1]. 40 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2023-11-26 12:02:19,304 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:19" (1/1) ... [2023-11-26 12:02:19,304 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:19" (1/1) ... [2023-11-26 12:02:19,318 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:19" (1/1) ... [2023-11-26 12:02:19,320 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:19" (1/1) ... [2023-11-26 12:02:19,324 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:19" (1/1) ... [2023-11-26 12:02:19,327 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:19" (1/1) ... [2023-11-26 12:02:19,334 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 12:02:19,335 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 12:02:19,335 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 12:02:19,335 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 12:02:19,336 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:19" (1/1) ... [2023-11-26 12:02:19,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:02:19,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3ad6e-1a6d-442c-9a3f-c91b774a0059/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:02:19,371 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3ad6e-1a6d-442c-9a3f-c91b774a0059/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 12:02:19,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac3ad6e-1a6d-442c-9a3f-c91b774a0059/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 12:02:19,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 12:02:19,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 12:02:19,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 12:02:19,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 12:02:19,433 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-26 12:02:19,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 12:02:19,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 12:02:19,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 12:02:19,436 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-26 12:02:19,436 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-26 12:02:19,437 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-26 12:02:19,437 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-26 12:02:19,437 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-26 12:02:19,437 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-26 12:02:19,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 12:02:19,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 12:02:19,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 12:02:19,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 12:02:19,439 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-26 12:02:19,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 12:02:19,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 12:02:19,441 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 12:02:19,608 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 12:02:19,612 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 12:02:20,142 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 12:02:20,515 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 12:02:20,515 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-26 12:02:20,517 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:02:20 BoogieIcfgContainer [2023-11-26 12:02:20,517 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 12:02:20,521 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 12:02:20,522 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 12:02:20,525 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 12:02:20,525 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:02:18" (1/3) ... [2023-11-26 12:02:20,526 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@578aabc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:02:20, skipping insertion in model container [2023-11-26 12:02:20,526 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:19" (2/3) ... [2023-11-26 12:02:20,528 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@578aabc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:02:20, skipping insertion in model container [2023-11-26 12:02:20,528 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:02:20" (3/3) ... [2023-11-26 12:02:20,530 INFO L112 eAbstractionObserver]: Analyzing ICFG safe035_power.i [2023-11-26 12:02:20,540 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 12:02:20,551 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 12:02:20,552 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-26 12:02:20,552 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 12:02:20,613 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 12:02:20,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 42 transitions, 96 flow [2023-11-26 12:02:20,696 INFO L124 PetriNetUnfolderBase]: 1/39 cut-off events. [2023-11-26 12:02:20,696 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 12:02:20,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 39 events. 1/39 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 75 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2023-11-26 12:02:20,701 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 42 transitions, 96 flow [2023-11-26 12:02:20,714 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 39 transitions, 87 flow [2023-11-26 12:02:20,738 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:02:20,745 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;@42da5db6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:02:20,746 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-26 12:02:20,760 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 12:02:20,760 INFO L124 PetriNetUnfolderBase]: 0/16 cut-off events. [2023-11-26 12:02:20,760 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 12:02:20,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:02:20,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:02:20,761 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-26 12:02:20,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:20,766 INFO L85 PathProgramCache]: Analyzing trace with hash 743793337, now seen corresponding path program 1 times [2023-11-26 12:02:20,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:02:20,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11383691] [2023-11-26 12:02:20,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:20,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:02:20,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:21,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:02:21,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:02:21,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11383691] [2023-11-26 12:02:21,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11383691] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:02:21,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:02:21,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 12:02:21,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990128380] [2023-11-26 12:02:21,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:02:21,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:02:21,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:02:21,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:02:21,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:02:21,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 42 [2023-11-26 12:02:21,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 87 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:21,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:02:21,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 42 [2023-11-26 12:02:21,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:02:22,388 INFO L124 PetriNetUnfolderBase]: 1951/3088 cut-off events. [2023-11-26 12:02:22,388 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-11-26 12:02:22,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5983 conditions, 3088 events. 1951/3088 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 18934 event pairs, 266 based on Foata normal form. 120/3172 useless extension candidates. Maximal degree in co-relation 5972. Up to 2386 conditions per place. [2023-11-26 12:02:22,448 INFO L140 encePairwiseOnDemand]: 38/42 looper letters, 33 selfloop transitions, 2 changer transitions 2/50 dead transitions. [2023-11-26 12:02:22,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 50 transitions, 183 flow [2023-11-26 12:02:22,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:02:22,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:02:22,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 88 transitions. [2023-11-26 12:02:22,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6984126984126984 [2023-11-26 12:02:22,467 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 88 transitions. [2023-11-26 12:02:22,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 88 transitions. [2023-11-26 12:02:22,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:02:22,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 88 transitions. [2023-11-26 12:02:22,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:22,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:22,477 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:22,479 INFO L175 Difference]: Start difference. First operand has 48 places, 39 transitions, 87 flow. Second operand 3 states and 88 transitions. [2023-11-26 12:02:22,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 50 transitions, 183 flow [2023-11-26 12:02:22,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 50 transitions, 180 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-26 12:02:22,486 INFO L231 Difference]: Finished difference. Result has 46 places, 36 transitions, 82 flow [2023-11-26 12:02:22,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=46, PETRI_TRANSITIONS=36} [2023-11-26 12:02:22,492 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -2 predicate places. [2023-11-26 12:02:22,492 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 36 transitions, 82 flow [2023-11-26 12:02:22,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:22,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:02:22,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:02:22,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 12:02:22,494 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-26 12:02:22,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:22,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1704297118, now seen corresponding path program 1 times [2023-11-26 12:02:22,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:02:22,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512702903] [2023-11-26 12:02:22,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:22,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:02:22,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:22,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:02:22,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:02:22,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512702903] [2023-11-26 12:02:22,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512702903] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:02:22,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:02:22,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:02:22,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621645856] [2023-11-26 12:02:22,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:02:22,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:02:22,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:02:22,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:02:22,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:02:22,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 42 [2023-11-26 12:02:22,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 36 transitions, 82 flow. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:22,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:02:22,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 42 [2023-11-26 12:02:22,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:02:24,091 INFO L124 PetriNetUnfolderBase]: 3031/4947 cut-off events. [2023-11-26 12:02:24,091 INFO L125 PetriNetUnfolderBase]: For 180/180 co-relation queries the response was YES. [2023-11-26 12:02:24,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9685 conditions, 4947 events. 3031/4947 cut-off events. For 180/180 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 31091 event pairs, 490 based on Foata normal form. 210/4997 useless extension candidates. Maximal degree in co-relation 9675. Up to 2466 conditions per place. [2023-11-26 12:02:24,132 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 54 selfloop transitions, 5 changer transitions 1/69 dead transitions. [2023-11-26 12:02:24,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 69 transitions, 276 flow [2023-11-26 12:02:24,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:02:24,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 12:02:24,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2023-11-26 12:02:24,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6547619047619048 [2023-11-26 12:02:24,138 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 110 transitions. [2023-11-26 12:02:24,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 110 transitions. [2023-11-26 12:02:24,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:02:24,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 110 transitions. [2023-11-26 12:02:24,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:24,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 42.0) internal successors, (210), 5 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:24,148 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 42.0) internal successors, (210), 5 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:24,149 INFO L175 Difference]: Start difference. First operand has 46 places, 36 transitions, 82 flow. Second operand 4 states and 110 transitions. [2023-11-26 12:02:24,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 69 transitions, 276 flow [2023-11-26 12:02:24,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 69 transitions, 268 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:02:24,156 INFO L231 Difference]: Finished difference. Result has 48 places, 39 transitions, 112 flow [2023-11-26 12:02:24,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=112, PETRI_PLACES=48, PETRI_TRANSITIONS=39} [2023-11-26 12:02:24,163 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 0 predicate places. [2023-11-26 12:02:24,164 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 39 transitions, 112 flow [2023-11-26 12:02:24,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:24,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:02:24,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:02:24,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 12:02:24,165 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-26 12:02:24,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:24,167 INFO L85 PathProgramCache]: Analyzing trace with hash 3938819, now seen corresponding path program 1 times [2023-11-26 12:02:24,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:02:24,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918068897] [2023-11-26 12:02:24,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:24,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:02:24,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:24,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:02:24,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:02:24,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918068897] [2023-11-26 12:02:24,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918068897] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:02:24,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:02:24,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 12:02:24,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241340878] [2023-11-26 12:02:24,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:02:24,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 12:02:24,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:02:24,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:02:24,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:02:24,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 42 [2023-11-26 12:02:24,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 112 flow. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:24,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:02:24,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 42 [2023-11-26 12:02:24,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:02:25,407 INFO L124 PetriNetUnfolderBase]: 1770/2874 cut-off events. [2023-11-26 12:02:25,407 INFO L125 PetriNetUnfolderBase]: For 613/613 co-relation queries the response was YES. [2023-11-26 12:02:25,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6523 conditions, 2874 events. 1770/2874 cut-off events. For 613/613 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 15572 event pairs, 304 based on Foata normal form. 150/2958 useless extension candidates. Maximal degree in co-relation 6511. Up to 927 conditions per place. [2023-11-26 12:02:25,432 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 69 selfloop transitions, 8 changer transitions 1/87 dead transitions. [2023-11-26 12:02:25,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 87 transitions, 385 flow [2023-11-26 12:02:25,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 12:02:25,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 12:02:25,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 140 transitions. [2023-11-26 12:02:25,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2023-11-26 12:02:25,437 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 140 transitions. [2023-11-26 12:02:25,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 140 transitions. [2023-11-26 12:02:25,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:02:25,438 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 140 transitions. [2023-11-26 12:02:25,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:25,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 42.0) internal successors, (252), 6 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:25,443 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 42.0) internal successors, (252), 6 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:25,443 INFO L175 Difference]: Start difference. First operand has 48 places, 39 transitions, 112 flow. Second operand 5 states and 140 transitions. [2023-11-26 12:02:25,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 87 transitions, 385 flow [2023-11-26 12:02:25,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 87 transitions, 375 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-26 12:02:25,451 INFO L231 Difference]: Finished difference. Result has 52 places, 42 transitions, 152 flow [2023-11-26 12:02:25,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=152, PETRI_PLACES=52, PETRI_TRANSITIONS=42} [2023-11-26 12:02:25,452 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 4 predicate places. [2023-11-26 12:02:25,453 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 42 transitions, 152 flow [2023-11-26 12:02:25,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:25,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:02:25,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:02:25,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 12:02:25,454 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-26 12:02:25,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:25,455 INFO L85 PathProgramCache]: Analyzing trace with hash -545191794, now seen corresponding path program 1 times [2023-11-26 12:02:25,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:02:25,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071964553] [2023-11-26 12:02:25,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:25,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:02:25,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:25,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:02:25,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:02:25,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071964553] [2023-11-26 12:02:25,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071964553] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:02:25,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:02:25,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 12:02:25,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789757748] [2023-11-26 12:02:25,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:02:25,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:02:25,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:02:25,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:02:25,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:02:25,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 42 [2023-11-26 12:02:25,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 42 transitions, 152 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:25,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:02:25,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 42 [2023-11-26 12:02:25,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:02:26,445 INFO L124 PetriNetUnfolderBase]: 1103/1729 cut-off events. [2023-11-26 12:02:26,445 INFO L125 PetriNetUnfolderBase]: For 1153/1153 co-relation queries the response was YES. [2023-11-26 12:02:26,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4349 conditions, 1729 events. 1103/1729 cut-off events. For 1153/1153 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 8188 event pairs, 269 based on Foata normal form. 56/1767 useless extension candidates. Maximal degree in co-relation 4335. Up to 646 conditions per place. [2023-11-26 12:02:26,459 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 58 selfloop transitions, 11 changer transitions 1/79 dead transitions. [2023-11-26 12:02:26,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 79 transitions, 376 flow [2023-11-26 12:02:26,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 12:02:26,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 12:02:26,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2023-11-26 12:02:26,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2023-11-26 12:02:26,462 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 144 transitions. [2023-11-26 12:02:26,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 144 transitions. [2023-11-26 12:02:26,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:02:26,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 144 transitions. [2023-11-26 12:02:26,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:26,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 42.0) internal successors, (294), 7 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:26,465 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 42.0) internal successors, (294), 7 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:26,465 INFO L175 Difference]: Start difference. First operand has 52 places, 42 transitions, 152 flow. Second operand 6 states and 144 transitions. [2023-11-26 12:02:26,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 79 transitions, 376 flow [2023-11-26 12:02:26,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 79 transitions, 351 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-11-26 12:02:26,478 INFO L231 Difference]: Finished difference. Result has 55 places, 42 transitions, 166 flow [2023-11-26 12:02:26,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=166, PETRI_PLACES=55, PETRI_TRANSITIONS=42} [2023-11-26 12:02:26,479 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 7 predicate places. [2023-11-26 12:02:26,480 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 42 transitions, 166 flow [2023-11-26 12:02:26,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:26,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:02:26,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:02:26,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 12:02:26,481 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-26 12:02:26,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:26,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1838501616, now seen corresponding path program 1 times [2023-11-26 12:02:26,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:02:26,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203135521] [2023-11-26 12:02:26,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:26,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:02:26,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:29,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:02:29,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:02:29,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203135521] [2023-11-26 12:02:29,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203135521] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:02:29,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:02:29,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-26 12:02:29,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926680040] [2023-11-26 12:02:29,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:02:29,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-26 12:02:29,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:02:29,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 12:02:29,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-11-26 12:02:29,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2023-11-26 12:02:29,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 42 transitions, 166 flow. Second operand has 11 states, 11 states have (on average 16.0) internal successors, (176), 11 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:29,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:02:29,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2023-11-26 12:02:29,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:02:30,219 INFO L124 PetriNetUnfolderBase]: 1283/2235 cut-off events. [2023-11-26 12:02:30,220 INFO L125 PetriNetUnfolderBase]: For 802/822 co-relation queries the response was YES. [2023-11-26 12:02:30,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5088 conditions, 2235 events. 1283/2235 cut-off events. For 802/822 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 12662 event pairs, 46 based on Foata normal form. 8/2212 useless extension candidates. Maximal degree in co-relation 5073. Up to 945 conditions per place. [2023-11-26 12:02:30,243 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 46 selfloop transitions, 5 changer transitions 37/105 dead transitions. [2023-11-26 12:02:30,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 105 transitions, 482 flow [2023-11-26 12:02:30,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 12:02:30,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-26 12:02:30,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 229 transitions. [2023-11-26 12:02:30,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5452380952380952 [2023-11-26 12:02:30,245 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 229 transitions. [2023-11-26 12:02:30,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 229 transitions. [2023-11-26 12:02:30,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:02:30,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 229 transitions. [2023-11-26 12:02:30,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 22.9) internal successors, (229), 10 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:30,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 42.0) internal successors, (462), 11 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:30,250 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 42.0) internal successors, (462), 11 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:30,250 INFO L175 Difference]: Start difference. First operand has 55 places, 42 transitions, 166 flow. Second operand 10 states and 229 transitions. [2023-11-26 12:02:30,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 105 transitions, 482 flow [2023-11-26 12:02:30,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 105 transitions, 418 flow, removed 14 selfloop flow, removed 8 redundant places. [2023-11-26 12:02:30,266 INFO L231 Difference]: Finished difference. Result has 63 places, 45 transitions, 149 flow [2023-11-26 12:02:30,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=149, PETRI_PLACES=63, PETRI_TRANSITIONS=45} [2023-11-26 12:02:30,269 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 15 predicate places. [2023-11-26 12:02:30,269 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 45 transitions, 149 flow [2023-11-26 12:02:30,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.0) internal successors, (176), 11 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:30,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:02:30,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:02:30,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 12:02:30,271 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-26 12:02:30,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:30,272 INFO L85 PathProgramCache]: Analyzing trace with hash -887620086, now seen corresponding path program 2 times [2023-11-26 12:02:30,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:02:30,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304816190] [2023-11-26 12:02:30,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:30,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:02:30,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:31,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:02:31,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:02:31,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304816190] [2023-11-26 12:02:31,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304816190] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:02:31,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:02:31,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-26 12:02:31,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970443024] [2023-11-26 12:02:31,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:02:31,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 12:02:31,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:02:31,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 12:02:31,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-26 12:02:31,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 42 [2023-11-26 12:02:31,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 45 transitions, 149 flow. Second operand has 9 states, 9 states have (on average 15.555555555555555) internal successors, (140), 9 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:31,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:02:31,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 42 [2023-11-26 12:02:31,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:02:32,411 INFO L124 PetriNetUnfolderBase]: 2049/3455 cut-off events. [2023-11-26 12:02:32,411 INFO L125 PetriNetUnfolderBase]: For 821/821 co-relation queries the response was YES. [2023-11-26 12:02:32,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7896 conditions, 3455 events. 2049/3455 cut-off events. For 821/821 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 20601 event pairs, 283 based on Foata normal form. 16/3385 useless extension candidates. Maximal degree in co-relation 7878. Up to 1303 conditions per place. [2023-11-26 12:02:32,438 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 38 selfloop transitions, 1 changer transitions 56/112 dead transitions. [2023-11-26 12:02:32,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 112 transitions, 524 flow [2023-11-26 12:02:32,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 12:02:32,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-26 12:02:32,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 222 transitions. [2023-11-26 12:02:32,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5285714285714286 [2023-11-26 12:02:32,441 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 222 transitions. [2023-11-26 12:02:32,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 222 transitions. [2023-11-26 12:02:32,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:02:32,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 222 transitions. [2023-11-26 12:02:32,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 22.2) internal successors, (222), 10 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:32,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 42.0) internal successors, (462), 11 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:32,444 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 42.0) internal successors, (462), 11 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:32,445 INFO L175 Difference]: Start difference. First operand has 63 places, 45 transitions, 149 flow. Second operand 10 states and 222 transitions. [2023-11-26 12:02:32,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 112 transitions, 524 flow [2023-11-26 12:02:32,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 112 transitions, 496 flow, removed 10 selfloop flow, removed 5 redundant places. [2023-11-26 12:02:32,455 INFO L231 Difference]: Finished difference. Result has 70 places, 45 transitions, 165 flow [2023-11-26 12:02:32,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=165, PETRI_PLACES=70, PETRI_TRANSITIONS=45} [2023-11-26 12:02:32,456 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 22 predicate places. [2023-11-26 12:02:32,456 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 45 transitions, 165 flow [2023-11-26 12:02:32,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.555555555555555) internal successors, (140), 9 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:32,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:02:32,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:02:32,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 12:02:32,458 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-26 12:02:32,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:32,459 INFO L85 PathProgramCache]: Analyzing trace with hash 609542874, now seen corresponding path program 3 times [2023-11-26 12:02:32,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:02:32,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918922167] [2023-11-26 12:02:32,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:32,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:02:32,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:37,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:02:37,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:02:37,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918922167] [2023-11-26 12:02:37,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918922167] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:02:37,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:02:37,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-11-26 12:02:37,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142390219] [2023-11-26 12:02:37,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:02:37,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-26 12:02:37,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:02:37,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-26 12:02:37,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2023-11-26 12:02:37,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2023-11-26 12:02:37,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 45 transitions, 165 flow. Second operand has 16 states, 16 states have (on average 15.375) internal successors, (246), 16 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:37,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:02:37,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2023-11-26 12:02:37,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:02:39,487 INFO L124 PetriNetUnfolderBase]: 1577/2832 cut-off events. [2023-11-26 12:02:39,488 INFO L125 PetriNetUnfolderBase]: For 987/1011 co-relation queries the response was YES. [2023-11-26 12:02:39,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6777 conditions, 2832 events. 1577/2832 cut-off events. For 987/1011 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 17159 event pairs, 426 based on Foata normal form. 8/2773 useless extension candidates. Maximal degree in co-relation 6755. Up to 1007 conditions per place. [2023-11-26 12:02:39,520 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 60 selfloop transitions, 10 changer transitions 23/110 dead transitions. [2023-11-26 12:02:39,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 110 transitions, 551 flow [2023-11-26 12:02:39,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 12:02:39,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-26 12:02:39,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 234 transitions. [2023-11-26 12:02:39,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5571428571428572 [2023-11-26 12:02:39,523 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 234 transitions. [2023-11-26 12:02:39,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 234 transitions. [2023-11-26 12:02:39,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:02:39,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 234 transitions. [2023-11-26 12:02:39,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 23.4) internal successors, (234), 10 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:39,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 42.0) internal successors, (462), 11 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:39,527 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 42.0) internal successors, (462), 11 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:39,527 INFO L175 Difference]: Start difference. First operand has 70 places, 45 transitions, 165 flow. Second operand 10 states and 234 transitions. [2023-11-26 12:02:39,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 110 transitions, 551 flow [2023-11-26 12:02:39,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 110 transitions, 516 flow, removed 17 selfloop flow, removed 7 redundant places. [2023-11-26 12:02:39,535 INFO L231 Difference]: Finished difference. Result has 70 places, 50 transitions, 224 flow [2023-11-26 12:02:39,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=224, PETRI_PLACES=70, PETRI_TRANSITIONS=50} [2023-11-26 12:02:39,536 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 22 predicate places. [2023-11-26 12:02:39,536 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 50 transitions, 224 flow [2023-11-26 12:02:39,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 15.375) internal successors, (246), 16 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:39,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:02:39,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:02:39,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 12:02:39,538 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-26 12:02:39,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:39,539 INFO L85 PathProgramCache]: Analyzing trace with hash 2027424870, now seen corresponding path program 4 times [2023-11-26 12:02:39,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:02:39,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038828382] [2023-11-26 12:02:39,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:39,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:02:39,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:41,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:02:41,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:02:41,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038828382] [2023-11-26 12:02:41,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038828382] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:02:41,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:02:41,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-26 12:02:41,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017724247] [2023-11-26 12:02:41,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:02:41,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 12:02:41,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:02:41,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 12:02:41,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-26 12:02:41,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 42 [2023-11-26 12:02:41,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 50 transitions, 224 flow. Second operand has 9 states, 9 states have (on average 17.333333333333332) internal successors, (156), 9 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:41,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:02:41,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 42 [2023-11-26 12:02:41,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:02:43,151 INFO L124 PetriNetUnfolderBase]: 2077/3787 cut-off events. [2023-11-26 12:02:43,151 INFO L125 PetriNetUnfolderBase]: For 3182/3207 co-relation queries the response was YES. [2023-11-26 12:02:43,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10265 conditions, 3787 events. 2077/3787 cut-off events. For 3182/3207 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 25220 event pairs, 550 based on Foata normal form. 9/3671 useless extension candidates. Maximal degree in co-relation 10243. Up to 2059 conditions per place. [2023-11-26 12:02:43,184 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 37 selfloop transitions, 12 changer transitions 39/108 dead transitions. [2023-11-26 12:02:43,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 108 transitions, 647 flow [2023-11-26 12:02:43,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 12:02:43,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-26 12:02:43,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 213 transitions. [2023-11-26 12:02:43,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5634920634920635 [2023-11-26 12:02:43,186 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 213 transitions. [2023-11-26 12:02:43,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 213 transitions. [2023-11-26 12:02:43,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:02:43,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 213 transitions. [2023-11-26 12:02:43,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 23.666666666666668) internal successors, (213), 9 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:43,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 42.0) internal successors, (420), 10 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:43,190 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 42.0) internal successors, (420), 10 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:43,190 INFO L175 Difference]: Start difference. First operand has 70 places, 50 transitions, 224 flow. Second operand 9 states and 213 transitions. [2023-11-26 12:02:43,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 108 transitions, 647 flow [2023-11-26 12:02:43,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 108 transitions, 618 flow, removed 9 selfloop flow, removed 6 redundant places. [2023-11-26 12:02:43,198 INFO L231 Difference]: Finished difference. Result has 76 places, 58 transitions, 322 flow [2023-11-26 12:02:43,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=322, PETRI_PLACES=76, PETRI_TRANSITIONS=58} [2023-11-26 12:02:43,200 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 28 predicate places. [2023-11-26 12:02:43,201 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 58 transitions, 322 flow [2023-11-26 12:02:43,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.333333333333332) internal successors, (156), 9 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:43,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:02:43,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:02:43,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 12:02:43,202 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-26 12:02:43,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:43,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1581524184, now seen corresponding path program 5 times [2023-11-26 12:02:43,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:02:43,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138594145] [2023-11-26 12:02:43,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:43,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:02:43,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:46,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:02:46,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:02:46,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138594145] [2023-11-26 12:02:46,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138594145] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:02:46,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:02:46,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-26 12:02:46,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694452197] [2023-11-26 12:02:46,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:02:46,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-26 12:02:46,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:02:46,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-26 12:02:46,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-11-26 12:02:46,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2023-11-26 12:02:46,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 58 transitions, 322 flow. Second operand has 13 states, 13 states have (on average 15.692307692307692) internal successors, (204), 13 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:46,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:02:46,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2023-11-26 12:02:46,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:02:47,966 INFO L124 PetriNetUnfolderBase]: 2432/4428 cut-off events. [2023-11-26 12:02:47,966 INFO L125 PetriNetUnfolderBase]: For 6958/7008 co-relation queries the response was YES. [2023-11-26 12:02:47,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13978 conditions, 4428 events. 2432/4428 cut-off events. For 6958/7008 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 30888 event pairs, 441 based on Foata normal form. 8/4296 useless extension candidates. Maximal degree in co-relation 13952. Up to 1896 conditions per place. [2023-11-26 12:02:48,010 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 69 selfloop transitions, 20 changer transitions 47/153 dead transitions. [2023-11-26 12:02:48,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 153 transitions, 1143 flow [2023-11-26 12:02:48,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 12:02:48,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-26 12:02:48,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 259 transitions. [2023-11-26 12:02:48,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5606060606060606 [2023-11-26 12:02:48,013 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 259 transitions. [2023-11-26 12:02:48,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 259 transitions. [2023-11-26 12:02:48,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:02:48,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 259 transitions. [2023-11-26 12:02:48,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 23.545454545454547) internal successors, (259), 11 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:48,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 42.0) internal successors, (504), 12 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:48,017 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 42.0) internal successors, (504), 12 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:48,017 INFO L175 Difference]: Start difference. First operand has 76 places, 58 transitions, 322 flow. Second operand 11 states and 259 transitions. [2023-11-26 12:02:48,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 153 transitions, 1143 flow [2023-11-26 12:02:48,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 153 transitions, 1072 flow, removed 24 selfloop flow, removed 5 redundant places. [2023-11-26 12:02:48,033 INFO L231 Difference]: Finished difference. Result has 83 places, 72 transitions, 490 flow [2023-11-26 12:02:48,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=490, PETRI_PLACES=83, PETRI_TRANSITIONS=72} [2023-11-26 12:02:48,035 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 35 predicate places. [2023-11-26 12:02:48,035 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 72 transitions, 490 flow [2023-11-26 12:02:48,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 15.692307692307692) internal successors, (204), 13 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:48,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:02:48,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:02:48,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 12:02:48,037 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-26 12:02:48,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:48,037 INFO L85 PathProgramCache]: Analyzing trace with hash -2098953920, now seen corresponding path program 6 times [2023-11-26 12:02:48,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:02:48,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862530691] [2023-11-26 12:02:48,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:48,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:02:48,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:50,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:02:50,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:02:50,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862530691] [2023-11-26 12:02:50,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862530691] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:02:50,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:02:50,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-26 12:02:50,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924541214] [2023-11-26 12:02:50,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:02:50,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 12:02:50,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:02:50,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 12:02:50,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-26 12:02:50,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2023-11-26 12:02:50,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 72 transitions, 490 flow. Second operand has 10 states, 10 states have (on average 16.2) internal successors, (162), 10 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:50,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:02:50,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2023-11-26 12:02:50,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:02:52,146 INFO L124 PetriNetUnfolderBase]: 2282/4147 cut-off events. [2023-11-26 12:02:52,146 INFO L125 PetriNetUnfolderBase]: For 11636/11728 co-relation queries the response was YES. [2023-11-26 12:02:52,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14791 conditions, 4147 events. 2282/4147 cut-off events. For 11636/11728 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 28423 event pairs, 616 based on Foata normal form. 16/4031 useless extension candidates. Maximal degree in co-relation 14762. Up to 1576 conditions per place. [2023-11-26 12:02:52,194 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 31 selfloop transitions, 7 changer transitions 95/150 dead transitions. [2023-11-26 12:02:52,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 150 transitions, 1280 flow [2023-11-26 12:02:52,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-26 12:02:52,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-26 12:02:52,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 279 transitions. [2023-11-26 12:02:52,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.510989010989011 [2023-11-26 12:02:52,196 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 279 transitions. [2023-11-26 12:02:52,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 279 transitions. [2023-11-26 12:02:52,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:02:52,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 279 transitions. [2023-11-26 12:02:52,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 21.46153846153846) internal successors, (279), 13 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:52,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 42.0) internal successors, (588), 14 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:52,200 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 42.0) internal successors, (588), 14 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:52,200 INFO L175 Difference]: Start difference. First operand has 83 places, 72 transitions, 490 flow. Second operand 13 states and 279 transitions. [2023-11-26 12:02:52,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 150 transitions, 1280 flow [2023-11-26 12:02:52,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 150 transitions, 1241 flow, removed 17 selfloop flow, removed 4 redundant places. [2023-11-26 12:02:52,222 INFO L231 Difference]: Finished difference. Result has 94 places, 48 transitions, 295 flow [2023-11-26 12:02:52,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=295, PETRI_PLACES=94, PETRI_TRANSITIONS=48} [2023-11-26 12:02:52,224 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 46 predicate places. [2023-11-26 12:02:52,224 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 48 transitions, 295 flow [2023-11-26 12:02:52,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.2) internal successors, (162), 10 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:52,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:02:52,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:02:52,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-26 12:02:52,227 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-26 12:02:52,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:52,228 INFO L85 PathProgramCache]: Analyzing trace with hash -534704286, now seen corresponding path program 7 times [2023-11-26 12:02:52,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:02:52,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072798455] [2023-11-26 12:02:52,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:52,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:02:52,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:55,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:02:55,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:02:55,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072798455] [2023-11-26 12:02:55,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072798455] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:02:55,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:02:55,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-26 12:02:55,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654704637] [2023-11-26 12:02:55,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:02:55,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-26 12:02:55,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:02:55,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 12:02:55,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-26 12:02:55,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2023-11-26 12:02:55,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 48 transitions, 295 flow. Second operand has 11 states, 11 states have (on average 16.0) internal successors, (176), 11 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:55,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:02:55,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2023-11-26 12:02:55,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:02:56,665 INFO L124 PetriNetUnfolderBase]: 658/1248 cut-off events. [2023-11-26 12:02:56,665 INFO L125 PetriNetUnfolderBase]: For 4118/4150 co-relation queries the response was YES. [2023-11-26 12:02:56,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4413 conditions, 1248 events. 658/1248 cut-off events. For 4118/4150 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 6632 event pairs, 153 based on Foata normal form. 8/1218 useless extension candidates. Maximal degree in co-relation 4378. Up to 625 conditions per place. [2023-11-26 12:02:56,679 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 34 selfloop transitions, 7 changer transitions 12/70 dead transitions. [2023-11-26 12:02:56,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 70 transitions, 507 flow [2023-11-26 12:02:56,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 12:02:56,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-26 12:02:56,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 160 transitions. [2023-11-26 12:02:56,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2023-11-26 12:02:56,681 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 160 transitions. [2023-11-26 12:02:56,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 160 transitions. [2023-11-26 12:02:56,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:02:56,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 160 transitions. [2023-11-26 12:02:56,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 20.0) internal successors, (160), 8 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:56,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 42.0) internal successors, (378), 9 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:56,684 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 42.0) internal successors, (378), 9 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:56,684 INFO L175 Difference]: Start difference. First operand has 94 places, 48 transitions, 295 flow. Second operand 8 states and 160 transitions. [2023-11-26 12:02:56,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 70 transitions, 507 flow [2023-11-26 12:02:56,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 70 transitions, 379 flow, removed 55 selfloop flow, removed 20 redundant places. [2023-11-26 12:02:56,699 INFO L231 Difference]: Finished difference. Result has 71 places, 50 transitions, 251 flow [2023-11-26 12:02:56,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=251, PETRI_PLACES=71, PETRI_TRANSITIONS=50} [2023-11-26 12:02:56,700 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 23 predicate places. [2023-11-26 12:02:56,700 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 50 transitions, 251 flow [2023-11-26 12:02:56,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.0) internal successors, (176), 11 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:56,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:02:56,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:02:56,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-26 12:02:56,701 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-26 12:02:56,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:56,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1841590498, now seen corresponding path program 8 times [2023-11-26 12:02:56,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:02:56,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541253031] [2023-11-26 12:02:56,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:56,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:02:56,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat