./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/rfi003_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 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_7f02f74c-5832-4aaf-95f5-461e2ad7425b/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02f74c-5832-4aaf-95f5-461e2ad7425b/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02f74c-5832-4aaf-95f5-461e2ad7425b/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02f74c-5832-4aaf-95f5-461e2ad7425b/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/rfi003_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02f74c-5832-4aaf-95f5-461e2ad7425b/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02f74c-5832-4aaf-95f5-461e2ad7425b/bin/uautomizer-verify-uTZkv6EMXl --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 503cbc793fb2369a7e5308c15a611fe38888f935ec98bb5d473194a0a60e31e4 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:08:01,328 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:08:01,416 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02f74c-5832-4aaf-95f5-461e2ad7425b/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:08:01,427 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:08:01,427 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:08:01,479 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:08:01,483 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:08:01,483 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:08:01,484 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:08:01,487 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:08:01,489 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:08:01,489 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:08:01,490 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:08:01,495 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:08:01,495 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:08:01,496 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:08:01,496 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:08:01,497 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:08:01,497 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:08:01,498 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:08:01,499 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:08:01,499 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:08:01,500 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:08:01,500 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:08:01,501 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:08:01,502 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:08:01,502 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:08:01,503 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:08:01,503 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:08:01,504 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:08:01,505 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:08:01,505 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:08:01,506 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:08:01,506 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:08:01,506 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:08:01,507 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:08:01,507 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:08:01,507 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:08:01,507 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:08:01,508 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_7f02f74c-5832-4aaf-95f5-461e2ad7425b/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02f74c-5832-4aaf-95f5-461e2ad7425b/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 503cbc793fb2369a7e5308c15a611fe38888f935ec98bb5d473194a0a60e31e4 [2023-11-12 02:08:01,821 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:08:01,858 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:08:01,861 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:08:01,863 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:08:01,863 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:08:01,865 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02f74c-5832-4aaf-95f5-461e2ad7425b/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/pthread-wmm/rfi003_tso.i [2023-11-12 02:08:04,993 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:08:05,302 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:08:05,303 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02f74c-5832-4aaf-95f5-461e2ad7425b/sv-benchmarks/c/pthread-wmm/rfi003_tso.i [2023-11-12 02:08:05,338 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02f74c-5832-4aaf-95f5-461e2ad7425b/bin/uautomizer-verify-uTZkv6EMXl/data/30c321000/3c0ef01df8c04d2e96dc7a52b21323e9/FLAGb7daf1888 [2023-11-12 02:08:05,352 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02f74c-5832-4aaf-95f5-461e2ad7425b/bin/uautomizer-verify-uTZkv6EMXl/data/30c321000/3c0ef01df8c04d2e96dc7a52b21323e9 [2023-11-12 02:08:05,354 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:08:05,355 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:08:05,357 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:08:05,357 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:08:05,366 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:08:05,367 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:08:05" (1/1) ... [2023-11-12 02:08:05,368 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b1ffb15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:05, skipping insertion in model container [2023-11-12 02:08:05,368 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:08:05" (1/1) ... [2023-11-12 02:08:05,450 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:08:05,684 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_7f02f74c-5832-4aaf-95f5-461e2ad7425b/sv-benchmarks/c/pthread-wmm/rfi003_tso.i[944,957] [2023-11-12 02:08:06,063 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:08:06,086 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:08:06,099 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_7f02f74c-5832-4aaf-95f5-461e2ad7425b/sv-benchmarks/c/pthread-wmm/rfi003_tso.i[944,957] [2023-11-12 02:08:06,161 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:08:06,198 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:08:06,198 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:08:06,207 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:08:06,207 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:06 WrapperNode [2023-11-12 02:08:06,208 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:08:06,209 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:08:06,209 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:08:06,209 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:08:06,218 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:06" (1/1) ... [2023-11-12 02:08:06,238 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:06" (1/1) ... [2023-11-12 02:08:06,273 INFO L138 Inliner]: procedures = 175, calls = 47, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 170 [2023-11-12 02:08:06,274 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:08:06,274 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:08:06,275 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:08:06,275 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:08:06,285 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:06" (1/1) ... [2023-11-12 02:08:06,285 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:06" (1/1) ... [2023-11-12 02:08:06,289 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:06" (1/1) ... [2023-11-12 02:08:06,290 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:06" (1/1) ... [2023-11-12 02:08:06,301 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:06" (1/1) ... [2023-11-12 02:08:06,320 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:06" (1/1) ... [2023-11-12 02:08:06,323 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:06" (1/1) ... [2023-11-12 02:08:06,326 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:06" (1/1) ... [2023-11-12 02:08:06,330 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:08:06,331 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:08:06,339 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:08:06,339 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:08:06,340 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:06" (1/1) ... [2023-11-12 02:08:06,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:08:06,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02f74c-5832-4aaf-95f5-461e2ad7425b/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:08:06,433 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02f74c-5832-4aaf-95f5-461e2ad7425b/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:08:06,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02f74c-5832-4aaf-95f5-461e2ad7425b/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:08:06,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:08:06,498 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 02:08:06,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:08:06,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:08:06,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:08:06,500 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-12 02:08:06,500 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-12 02:08:06,501 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-12 02:08:06,501 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-12 02:08:06,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:08:06,503 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 02:08:06,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:08:06,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:08:06,506 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:08:06,709 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:08:06,711 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:08:07,122 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:08:07,384 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:08:07,384 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 02:08:07,387 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:08:07 BoogieIcfgContainer [2023-11-12 02:08:07,388 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:08:07,392 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:08:07,393 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:08:07,397 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:08:07,398 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:08:05" (1/3) ... [2023-11-12 02:08:07,398 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dcb2df2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:08:07, skipping insertion in model container [2023-11-12 02:08:07,399 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:06" (2/3) ... [2023-11-12 02:08:07,400 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dcb2df2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:08:07, skipping insertion in model container [2023-11-12 02:08:07,402 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:08:07" (3/3) ... [2023-11-12 02:08:07,403 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi003_tso.i [2023-11-12 02:08:07,413 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:08:07,426 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:08:07,427 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-12 02:08:07,427 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:08:07,515 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 02:08:07,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 95 transitions, 198 flow [2023-11-12 02:08:07,677 INFO L124 PetriNetUnfolderBase]: 2/93 cut-off events. [2023-11-12 02:08:07,678 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:08:07,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 93 events. 2/93 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 50 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2023-11-12 02:08:07,683 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 95 transitions, 198 flow [2023-11-12 02:08:07,688 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 98 places, 93 transitions, 192 flow [2023-11-12 02:08:07,692 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:08:07,720 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 98 places, 93 transitions, 192 flow [2023-11-12 02:08:07,726 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 98 places, 93 transitions, 192 flow [2023-11-12 02:08:07,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 93 transitions, 192 flow [2023-11-12 02:08:07,784 INFO L124 PetriNetUnfolderBase]: 2/93 cut-off events. [2023-11-12 02:08:07,784 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:08:07,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 93 events. 2/93 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 50 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2023-11-12 02:08:07,788 INFO L119 LiptonReduction]: Number of co-enabled transitions 1388 [2023-11-12 02:08:11,836 INFO L134 LiptonReduction]: Checked pairs total: 4590 [2023-11-12 02:08:11,837 INFO L136 LiptonReduction]: Total number of compositions: 80 [2023-11-12 02:08:11,852 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:08:11,859 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;@4c155960, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:08:11,859 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-12 02:08:11,866 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:08:11,866 INFO L124 PetriNetUnfolderBase]: 1/12 cut-off events. [2023-11-12 02:08:11,866 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:08:11,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:08:11,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-12 02:08:11,868 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-12 02:08:11,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:11,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1950869710, now seen corresponding path program 1 times [2023-11-12 02:08:11,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:11,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86302233] [2023-11-12 02:08:11,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:11,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:12,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:12,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:12,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:12,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86302233] [2023-11-12 02:08:12,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86302233] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:12,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:12,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:08:12,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673599693] [2023-11-12 02:08:12,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:12,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:08:12,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:12,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:08:12,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:08:12,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 175 [2023-11-12 02:08:12,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 23 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 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) [2023-11-12 02:08:12,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:08:12,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 175 [2023-11-12 02:08:12,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:08:12,763 INFO L124 PetriNetUnfolderBase]: 380/638 cut-off events. [2023-11-12 02:08:12,763 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-12 02:08:12,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1290 conditions, 638 events. 380/638 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2606 event pairs, 90 based on Foata normal form. 35/602 useless extension candidates. Maximal degree in co-relation 1280. Up to 466 conditions per place. [2023-11-12 02:08:12,771 INFO L140 encePairwiseOnDemand]: 171/175 looper letters, 24 selfloop transitions, 2 changer transitions 4/31 dead transitions. [2023-11-12 02:08:12,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 31 transitions, 128 flow [2023-11-12 02:08:12,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:08:12,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:08:12,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 273 transitions. [2023-11-12 02:08:12,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52 [2023-11-12 02:08:12,788 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 273 transitions. [2023-11-12 02:08:12,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 273 transitions. [2023-11-12 02:08:12,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:08:12,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 273 transitions. [2023-11-12 02:08:12,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 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) [2023-11-12 02:08:12,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 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) [2023-11-12 02:08:12,803 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 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) [2023-11-12 02:08:12,805 INFO L175 Difference]: Start difference. First operand has 29 places, 23 transitions, 52 flow. Second operand 3 states and 273 transitions. [2023-11-12 02:08:12,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 31 transitions, 128 flow [2023-11-12 02:08:12,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 31 transitions, 126 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:08:12,811 INFO L231 Difference]: Finished difference. Result has 28 places, 19 transitions, 46 flow [2023-11-12 02:08:12,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=46, PETRI_PLACES=28, PETRI_TRANSITIONS=19} [2023-11-12 02:08:12,816 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -1 predicate places. [2023-11-12 02:08:12,817 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 19 transitions, 46 flow [2023-11-12 02:08:12,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 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) [2023-11-12 02:08:12,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:08:12,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:12,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:08:12,818 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-12 02:08:12,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:12,819 INFO L85 PathProgramCache]: Analyzing trace with hash -2113279695, now seen corresponding path program 1 times [2023-11-12 02:08:12,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:12,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466673238] [2023-11-12 02:08:12,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:12,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:12,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:13,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:13,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:13,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466673238] [2023-11-12 02:08:13,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466673238] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:13,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:13,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:08:13,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778596035] [2023-11-12 02:08:13,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:13,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:08:13,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:13,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:08:13,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:08:13,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 175 [2023-11-12 02:08:13,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 19 transitions, 46 flow. Second operand has 5 states, 5 states have (on average 69.6) internal successors, (348), 5 states have internal predecessors, (348), 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) [2023-11-12 02:08:13,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:08:13,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 175 [2023-11-12 02:08:13,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:08:14,230 INFO L124 PetriNetUnfolderBase]: 289/506 cut-off events. [2023-11-12 02:08:14,230 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-12 02:08:14,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1054 conditions, 506 events. 289/506 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1859 event pairs, 125 based on Foata normal form. 42/548 useless extension candidates. Maximal degree in co-relation 1044. Up to 226 conditions per place. [2023-11-12 02:08:14,236 INFO L140 encePairwiseOnDemand]: 171/175 looper letters, 24 selfloop transitions, 2 changer transitions 17/43 dead transitions. [2023-11-12 02:08:14,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 43 transitions, 182 flow [2023-11-12 02:08:14,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:08:14,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:08:14,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 385 transitions. [2023-11-12 02:08:14,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44 [2023-11-12 02:08:14,240 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 385 transitions. [2023-11-12 02:08:14,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 385 transitions. [2023-11-12 02:08:14,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:08:14,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 385 transitions. [2023-11-12 02:08:14,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 77.0) internal successors, (385), 5 states have internal predecessors, (385), 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) [2023-11-12 02:08:14,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 175.0) internal successors, (1050), 6 states have internal predecessors, (1050), 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) [2023-11-12 02:08:14,247 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 175.0) internal successors, (1050), 6 states have internal predecessors, (1050), 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) [2023-11-12 02:08:14,248 INFO L175 Difference]: Start difference. First operand has 28 places, 19 transitions, 46 flow. Second operand 5 states and 385 transitions. [2023-11-12 02:08:14,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 43 transitions, 182 flow [2023-11-12 02:08:14,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 43 transitions, 176 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:08:14,250 INFO L231 Difference]: Finished difference. Result has 31 places, 19 transitions, 54 flow [2023-11-12 02:08:14,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=54, PETRI_PLACES=31, PETRI_TRANSITIONS=19} [2023-11-12 02:08:14,251 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 2 predicate places. [2023-11-12 02:08:14,252 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 19 transitions, 54 flow [2023-11-12 02:08:14,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.6) internal successors, (348), 5 states have internal predecessors, (348), 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) [2023-11-12 02:08:14,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:08:14,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:14,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:08:14,253 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-12 02:08:14,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:14,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1454473971, now seen corresponding path program 1 times [2023-11-12 02:08:14,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:14,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225507720] [2023-11-12 02:08:14,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:14,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:14,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:15,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:15,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:15,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225507720] [2023-11-12 02:08:15,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225507720] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:15,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:15,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:08:15,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155989316] [2023-11-12 02:08:15,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:15,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 02:08:15,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:15,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 02:08:15,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:08:15,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 175 [2023-11-12 02:08:15,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 19 transitions, 54 flow. Second operand has 9 states, 9 states have (on average 69.33333333333333) internal successors, (624), 9 states have internal predecessors, (624), 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) [2023-11-12 02:08:15,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:08:15,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 175 [2023-11-12 02:08:15,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:08:16,042 INFO L124 PetriNetUnfolderBase]: 188/350 cut-off events. [2023-11-12 02:08:16,042 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2023-11-12 02:08:16,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 785 conditions, 350 events. 188/350 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1284 event pairs, 139 based on Foata normal form. 17/367 useless extension candidates. Maximal degree in co-relation 772. Up to 303 conditions per place. [2023-11-12 02:08:16,046 INFO L140 encePairwiseOnDemand]: 166/175 looper letters, 26 selfloop transitions, 9 changer transitions 9/45 dead transitions. [2023-11-12 02:08:16,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 45 transitions, 201 flow [2023-11-12 02:08:16,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:08:16,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-12 02:08:16,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 591 transitions. [2023-11-12 02:08:16,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42214285714285715 [2023-11-12 02:08:16,050 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 591 transitions. [2023-11-12 02:08:16,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 591 transitions. [2023-11-12 02:08:16,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:08:16,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 591 transitions. [2023-11-12 02:08:16,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 73.875) internal successors, (591), 8 states have internal predecessors, (591), 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) [2023-11-12 02:08:16,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 175.0) internal successors, (1575), 9 states have internal predecessors, (1575), 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) [2023-11-12 02:08:16,060 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 175.0) internal successors, (1575), 9 states have internal predecessors, (1575), 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) [2023-11-12 02:08:16,060 INFO L175 Difference]: Start difference. First operand has 31 places, 19 transitions, 54 flow. Second operand 8 states and 591 transitions. [2023-11-12 02:08:16,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 45 transitions, 201 flow [2023-11-12 02:08:16,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 45 transitions, 191 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-11-12 02:08:16,064 INFO L231 Difference]: Finished difference. Result has 38 places, 27 transitions, 113 flow [2023-11-12 02:08:16,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=113, PETRI_PLACES=38, PETRI_TRANSITIONS=27} [2023-11-12 02:08:16,066 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 9 predicate places. [2023-11-12 02:08:16,070 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 27 transitions, 113 flow [2023-11-12 02:08:16,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 69.33333333333333) internal successors, (624), 9 states have internal predecessors, (624), 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) [2023-11-12 02:08:16,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:08:16,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:16,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:08:16,071 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-12 02:08:16,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:16,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1867422455, now seen corresponding path program 1 times [2023-11-12 02:08:16,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:16,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40525078] [2023-11-12 02:08:16,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:16,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:16,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:16,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:16,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:16,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40525078] [2023-11-12 02:08:16,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40525078] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:16,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:16,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:08:16,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023386943] [2023-11-12 02:08:16,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:16,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:08:16,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:16,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:08:16,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:08:16,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 175 [2023-11-12 02:08:16,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 27 transitions, 113 flow. Second operand has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 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) [2023-11-12 02:08:16,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:08:16,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 175 [2023-11-12 02:08:16,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:08:16,488 INFO L124 PetriNetUnfolderBase]: 64/148 cut-off events. [2023-11-12 02:08:16,488 INFO L125 PetriNetUnfolderBase]: For 75/75 co-relation queries the response was YES. [2023-11-12 02:08:16,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 425 conditions, 148 events. 64/148 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 449 event pairs, 21 based on Foata normal form. 22/169 useless extension candidates. Maximal degree in co-relation 408. Up to 93 conditions per place. [2023-11-12 02:08:16,490 INFO L140 encePairwiseOnDemand]: 171/175 looper letters, 35 selfloop transitions, 3 changer transitions 0/39 dead transitions. [2023-11-12 02:08:16,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 39 transitions, 228 flow [2023-11-12 02:08:16,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:08:16,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:08:16,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 265 transitions. [2023-11-12 02:08:16,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5047619047619047 [2023-11-12 02:08:16,493 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 265 transitions. [2023-11-12 02:08:16,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 265 transitions. [2023-11-12 02:08:16,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:08:16,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 265 transitions. [2023-11-12 02:08:16,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 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) [2023-11-12 02:08:16,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 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) [2023-11-12 02:08:16,497 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 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) [2023-11-12 02:08:16,498 INFO L175 Difference]: Start difference. First operand has 38 places, 27 transitions, 113 flow. Second operand 3 states and 265 transitions. [2023-11-12 02:08:16,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 39 transitions, 228 flow [2023-11-12 02:08:16,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 39 transitions, 226 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-12 02:08:16,501 INFO L231 Difference]: Finished difference. Result has 38 places, 29 transitions, 130 flow [2023-11-12 02:08:16,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=38, PETRI_TRANSITIONS=29} [2023-11-12 02:08:16,502 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 9 predicate places. [2023-11-12 02:08:16,503 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 29 transitions, 130 flow [2023-11-12 02:08:16,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 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) [2023-11-12 02:08:16,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:08:16,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:16,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:08:16,504 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-12 02:08:16,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:16,505 INFO L85 PathProgramCache]: Analyzing trace with hash -803347592, now seen corresponding path program 1 times [2023-11-12 02:08:16,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:16,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578459390] [2023-11-12 02:08:16,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:16,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:16,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:18,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:18,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:18,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578459390] [2023-11-12 02:08:18,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578459390] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:18,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:18,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:08:18,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388265180] [2023-11-12 02:08:18,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:18,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 02:08:18,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:18,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 02:08:18,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:08:19,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 175 [2023-11-12 02:08:19,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 29 transitions, 130 flow. Second operand has 9 states, 9 states have (on average 71.55555555555556) internal successors, (644), 9 states have internal predecessors, (644), 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) [2023-11-12 02:08:19,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:08:19,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 175 [2023-11-12 02:08:19,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:08:19,341 INFO L124 PetriNetUnfolderBase]: 62/152 cut-off events. [2023-11-12 02:08:19,341 INFO L125 PetriNetUnfolderBase]: For 70/70 co-relation queries the response was YES. [2023-11-12 02:08:19,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 469 conditions, 152 events. 62/152 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 472 event pairs, 36 based on Foata normal form. 5/157 useless extension candidates. Maximal degree in co-relation 450. Up to 131 conditions per place. [2023-11-12 02:08:19,344 INFO L140 encePairwiseOnDemand]: 169/175 looper letters, 26 selfloop transitions, 8 changer transitions 5/40 dead transitions. [2023-11-12 02:08:19,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 40 transitions, 247 flow [2023-11-12 02:08:19,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:08:19,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:08:19,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 527 transitions. [2023-11-12 02:08:19,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43020408163265306 [2023-11-12 02:08:19,348 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 527 transitions. [2023-11-12 02:08:19,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 527 transitions. [2023-11-12 02:08:19,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:08:19,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 527 transitions. [2023-11-12 02:08:19,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 75.28571428571429) internal successors, (527), 7 states have internal predecessors, (527), 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) [2023-11-12 02:08:19,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 175.0) internal successors, (1400), 8 states have internal predecessors, (1400), 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) [2023-11-12 02:08:19,354 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 175.0) internal successors, (1400), 8 states have internal predecessors, (1400), 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) [2023-11-12 02:08:19,354 INFO L175 Difference]: Start difference. First operand has 38 places, 29 transitions, 130 flow. Second operand 7 states and 527 transitions. [2023-11-12 02:08:19,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 40 transitions, 247 flow [2023-11-12 02:08:19,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 40 transitions, 243 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:08:19,357 INFO L231 Difference]: Finished difference. Result has 46 places, 29 transitions, 153 flow [2023-11-12 02:08:19,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=153, PETRI_PLACES=46, PETRI_TRANSITIONS=29} [2023-11-12 02:08:19,359 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 17 predicate places. [2023-11-12 02:08:19,359 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 29 transitions, 153 flow [2023-11-12 02:08:19,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 71.55555555555556) internal successors, (644), 9 states have internal predecessors, (644), 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) [2023-11-12 02:08:19,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:08:19,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:19,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:08:19,360 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-12 02:08:19,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:19,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1624473866, now seen corresponding path program 1 times [2023-11-12 02:08:19,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:19,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291458644] [2023-11-12 02:08:19,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:19,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:19,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:21,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:21,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:21,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291458644] [2023-11-12 02:08:21,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291458644] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:21,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:21,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 02:08:21,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510774199] [2023-11-12 02:08:21,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:21,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-12 02:08:21,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:21,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-12 02:08:21,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-12 02:08:21,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 175 [2023-11-12 02:08:21,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 29 transitions, 153 flow. Second operand has 10 states, 10 states have (on average 70.5) internal successors, (705), 10 states have internal predecessors, (705), 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) [2023-11-12 02:08:21,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:08:21,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 175 [2023-11-12 02:08:21,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:08:22,582 INFO L124 PetriNetUnfolderBase]: 76/184 cut-off events. [2023-11-12 02:08:22,582 INFO L125 PetriNetUnfolderBase]: For 143/143 co-relation queries the response was YES. [2023-11-12 02:08:22,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 589 conditions, 184 events. 76/184 cut-off events. For 143/143 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 643 event pairs, 7 based on Foata normal form. 4/188 useless extension candidates. Maximal degree in co-relation 566. Up to 109 conditions per place. [2023-11-12 02:08:22,585 INFO L140 encePairwiseOnDemand]: 165/175 looper letters, 39 selfloop transitions, 21 changer transitions 4/65 dead transitions. [2023-11-12 02:08:22,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 65 transitions, 405 flow [2023-11-12 02:08:22,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-12 02:08:22,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-12 02:08:22,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 959 transitions. [2023-11-12 02:08:22,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42153846153846153 [2023-11-12 02:08:22,590 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 959 transitions. [2023-11-12 02:08:22,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 959 transitions. [2023-11-12 02:08:22,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:08:22,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 959 transitions. [2023-11-12 02:08:22,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 73.76923076923077) internal successors, (959), 13 states have internal predecessors, (959), 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) [2023-11-12 02:08:22,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 175.0) internal successors, (2450), 14 states have internal predecessors, (2450), 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) [2023-11-12 02:08:22,600 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 175.0) internal successors, (2450), 14 states have internal predecessors, (2450), 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) [2023-11-12 02:08:22,600 INFO L175 Difference]: Start difference. First operand has 46 places, 29 transitions, 153 flow. Second operand 13 states and 959 transitions. [2023-11-12 02:08:22,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 65 transitions, 405 flow [2023-11-12 02:08:22,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 65 transitions, 389 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-11-12 02:08:22,605 INFO L231 Difference]: Finished difference. Result has 56 places, 42 transitions, 254 flow [2023-11-12 02:08:22,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=254, PETRI_PLACES=56, PETRI_TRANSITIONS=42} [2023-11-12 02:08:22,606 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 27 predicate places. [2023-11-12 02:08:22,606 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 42 transitions, 254 flow [2023-11-12 02:08:22,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 70.5) internal successors, (705), 10 states have internal predecessors, (705), 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) [2023-11-12 02:08:22,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:08:22,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:22,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:08:22,607 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-12 02:08:22,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:22,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1608719210, now seen corresponding path program 2 times [2023-11-12 02:08:22,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:22,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973174491] [2023-11-12 02:08:22,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:22,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:22,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:24,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:24,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:24,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973174491] [2023-11-12 02:08:24,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973174491] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:24,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:24,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 02:08:24,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85641812] [2023-11-12 02:08:24,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:24,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-12 02:08:24,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:24,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-12 02:08:24,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-12 02:08:24,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 175 [2023-11-12 02:08:24,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 42 transitions, 254 flow. Second operand has 10 states, 10 states have (on average 72.5) internal successors, (725), 10 states have internal predecessors, (725), 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) [2023-11-12 02:08:24,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:08:24,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 175 [2023-11-12 02:08:24,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:08:24,717 INFO L124 PetriNetUnfolderBase]: 104/251 cut-off events. [2023-11-12 02:08:24,717 INFO L125 PetriNetUnfolderBase]: For 366/366 co-relation queries the response was YES. [2023-11-12 02:08:24,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 969 conditions, 251 events. 104/251 cut-off events. For 366/366 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1042 event pairs, 18 based on Foata normal form. 5/255 useless extension candidates. Maximal degree in co-relation 943. Up to 87 conditions per place. [2023-11-12 02:08:24,720 INFO L140 encePairwiseOnDemand]: 166/175 looper letters, 47 selfloop transitions, 19 changer transitions 11/78 dead transitions. [2023-11-12 02:08:24,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 78 transitions, 599 flow [2023-11-12 02:08:24,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:08:24,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-12 02:08:24,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 624 transitions. [2023-11-12 02:08:24,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44571428571428573 [2023-11-12 02:08:24,725 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 624 transitions. [2023-11-12 02:08:24,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 624 transitions. [2023-11-12 02:08:24,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:08:24,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 624 transitions. [2023-11-12 02:08:24,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 78.0) internal successors, (624), 8 states have internal predecessors, (624), 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) [2023-11-12 02:08:24,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 175.0) internal successors, (1575), 9 states have internal predecessors, (1575), 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) [2023-11-12 02:08:24,736 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 175.0) internal successors, (1575), 9 states have internal predecessors, (1575), 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) [2023-11-12 02:08:24,737 INFO L175 Difference]: Start difference. First operand has 56 places, 42 transitions, 254 flow. Second operand 8 states and 624 transitions. [2023-11-12 02:08:24,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 78 transitions, 599 flow [2023-11-12 02:08:24,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 78 transitions, 546 flow, removed 19 selfloop flow, removed 7 redundant places. [2023-11-12 02:08:24,746 INFO L231 Difference]: Finished difference. Result has 59 places, 45 transitions, 309 flow [2023-11-12 02:08:24,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=309, PETRI_PLACES=59, PETRI_TRANSITIONS=45} [2023-11-12 02:08:24,748 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 30 predicate places. [2023-11-12 02:08:24,748 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 45 transitions, 309 flow [2023-11-12 02:08:24,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 72.5) internal successors, (725), 10 states have internal predecessors, (725), 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) [2023-11-12 02:08:24,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:08:24,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:24,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:08:24,750 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-12 02:08:24,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:24,751 INFO L85 PathProgramCache]: Analyzing trace with hash 278039752, now seen corresponding path program 3 times [2023-11-12 02:08:24,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:24,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127160887] [2023-11-12 02:08:24,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:24,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:24,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:24,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:24,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:24,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127160887] [2023-11-12 02:08:24,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127160887] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:24,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:24,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:08:24,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854642591] [2023-11-12 02:08:24,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:24,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:08:24,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:24,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:08:24,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:08:24,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 175 [2023-11-12 02:08:24,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 45 transitions, 309 flow. Second operand has 4 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 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) [2023-11-12 02:08:24,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:08:24,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 175 [2023-11-12 02:08:24,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:08:25,110 INFO L124 PetriNetUnfolderBase]: 48/134 cut-off events. [2023-11-12 02:08:25,110 INFO L125 PetriNetUnfolderBase]: For 229/229 co-relation queries the response was YES. [2023-11-12 02:08:25,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 554 conditions, 134 events. 48/134 cut-off events. For 229/229 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 480 event pairs, 11 based on Foata normal form. 18/151 useless extension candidates. Maximal degree in co-relation 531. Up to 81 conditions per place. [2023-11-12 02:08:25,112 INFO L140 encePairwiseOnDemand]: 171/175 looper letters, 38 selfloop transitions, 5 changer transitions 14/58 dead transitions. [2023-11-12 02:08:25,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 58 transitions, 512 flow [2023-11-12 02:08:25,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:08:25,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:08:25,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 343 transitions. [2023-11-12 02:08:25,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49 [2023-11-12 02:08:25,119 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 343 transitions. [2023-11-12 02:08:25,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 343 transitions. [2023-11-12 02:08:25,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:08:25,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 343 transitions. [2023-11-12 02:08:25,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 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) [2023-11-12 02:08:25,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 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) [2023-11-12 02:08:25,124 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 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) [2023-11-12 02:08:25,124 INFO L175 Difference]: Start difference. First operand has 59 places, 45 transitions, 309 flow. Second operand 4 states and 343 transitions. [2023-11-12 02:08:25,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 58 transitions, 512 flow [2023-11-12 02:08:25,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 58 transitions, 449 flow, removed 16 selfloop flow, removed 8 redundant places. [2023-11-12 02:08:25,129 INFO L231 Difference]: Finished difference. Result has 53 places, 38 transitions, 225 flow [2023-11-12 02:08:25,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=225, PETRI_PLACES=53, PETRI_TRANSITIONS=38} [2023-11-12 02:08:25,133 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 24 predicate places. [2023-11-12 02:08:25,134 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 38 transitions, 225 flow [2023-11-12 02:08:25,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 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) [2023-11-12 02:08:25,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:08:25,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:25,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:08:25,135 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-12 02:08:25,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:25,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1122695857, now seen corresponding path program 1 times [2023-11-12 02:08:25,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:25,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483846370] [2023-11-12 02:08:25,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:25,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:25,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:25,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:25,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:25,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483846370] [2023-11-12 02:08:25,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483846370] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:25,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:25,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:08:25,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538907845] [2023-11-12 02:08:25,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:25,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:08:25,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:25,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:08:25,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:08:26,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 175 [2023-11-12 02:08:26,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 38 transitions, 225 flow. Second operand has 6 states, 6 states have (on average 69.16666666666667) internal successors, (415), 6 states have internal predecessors, (415), 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) [2023-11-12 02:08:26,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:08:26,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 175 [2023-11-12 02:08:26,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:08:26,367 INFO L124 PetriNetUnfolderBase]: 46/133 cut-off events. [2023-11-12 02:08:26,368 INFO L125 PetriNetUnfolderBase]: For 208/208 co-relation queries the response was YES. [2023-11-12 02:08:26,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 504 conditions, 133 events. 46/133 cut-off events. For 208/208 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 440 event pairs, 8 based on Foata normal form. 1/134 useless extension candidates. Maximal degree in co-relation 481. Up to 57 conditions per place. [2023-11-12 02:08:26,369 INFO L140 encePairwiseOnDemand]: 168/175 looper letters, 20 selfloop transitions, 3 changer transitions 38/61 dead transitions. [2023-11-12 02:08:26,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 61 transitions, 474 flow [2023-11-12 02:08:26,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:08:26,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:08:26,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 503 transitions. [2023-11-12 02:08:26,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41061224489795917 [2023-11-12 02:08:26,373 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 503 transitions. [2023-11-12 02:08:26,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 503 transitions. [2023-11-12 02:08:26,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:08:26,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 503 transitions. [2023-11-12 02:08:26,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 71.85714285714286) internal successors, (503), 7 states have internal predecessors, (503), 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) [2023-11-12 02:08:26,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 175.0) internal successors, (1400), 8 states have internal predecessors, (1400), 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) [2023-11-12 02:08:26,379 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 175.0) internal successors, (1400), 8 states have internal predecessors, (1400), 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) [2023-11-12 02:08:26,379 INFO L175 Difference]: Start difference. First operand has 53 places, 38 transitions, 225 flow. Second operand 7 states and 503 transitions. [2023-11-12 02:08:26,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 61 transitions, 474 flow [2023-11-12 02:08:26,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 61 transitions, 430 flow, removed 10 selfloop flow, removed 6 redundant places. [2023-11-12 02:08:26,383 INFO L231 Difference]: Finished difference. Result has 56 places, 21 transitions, 105 flow [2023-11-12 02:08:26,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=105, PETRI_PLACES=56, PETRI_TRANSITIONS=21} [2023-11-12 02:08:26,384 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 27 predicate places. [2023-11-12 02:08:26,385 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 21 transitions, 105 flow [2023-11-12 02:08:26,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 69.16666666666667) internal successors, (415), 6 states have internal predecessors, (415), 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) [2023-11-12 02:08:26,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:08:26,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:26,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:08:26,386 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-12 02:08:26,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:26,387 INFO L85 PathProgramCache]: Analyzing trace with hash -913104655, now seen corresponding path program 2 times [2023-11-12 02:08:26,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:26,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368870218] [2023-11-12 02:08:26,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:26,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:26,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:28,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:28,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:28,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368870218] [2023-11-12 02:08:28,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368870218] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:28,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:28,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-12 02:08:28,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199355035] [2023-11-12 02:08:28,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:28,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-12 02:08:28,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:28,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-12 02:08:28,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-12 02:08:28,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 175 [2023-11-12 02:08:28,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 21 transitions, 105 flow. Second operand has 12 states, 12 states have (on average 71.5) internal successors, (858), 12 states have internal predecessors, (858), 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) [2023-11-12 02:08:28,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:08:28,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 175 [2023-11-12 02:08:28,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:08:29,047 INFO L124 PetriNetUnfolderBase]: 9/40 cut-off events. [2023-11-12 02:08:29,047 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2023-11-12 02:08:29,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151 conditions, 40 events. 9/40 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 48 event pairs, 1 based on Foata normal form. 1/41 useless extension candidates. Maximal degree in co-relation 137. Up to 14 conditions per place. [2023-11-12 02:08:29,048 INFO L140 encePairwiseOnDemand]: 167/175 looper letters, 0 selfloop transitions, 0 changer transitions 25/25 dead transitions. [2023-11-12 02:08:29,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 25 transitions, 173 flow [2023-11-12 02:08:29,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 02:08:29,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-12 02:08:29,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 653 transitions. [2023-11-12 02:08:29,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146031746031746 [2023-11-12 02:08:29,051 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 653 transitions. [2023-11-12 02:08:29,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 653 transitions. [2023-11-12 02:08:29,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:08:29,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 653 transitions. [2023-11-12 02:08:29,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 72.55555555555556) internal successors, (653), 9 states have internal predecessors, (653), 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) [2023-11-12 02:08:29,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 175.0) internal successors, (1750), 10 states have internal predecessors, (1750), 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) [2023-11-12 02:08:29,059 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 175.0) internal successors, (1750), 10 states have internal predecessors, (1750), 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) [2023-11-12 02:08:29,059 INFO L175 Difference]: Start difference. First operand has 56 places, 21 transitions, 105 flow. Second operand 9 states and 653 transitions. [2023-11-12 02:08:29,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 25 transitions, 173 flow [2023-11-12 02:08:29,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 25 transitions, 145 flow, removed 5 selfloop flow, removed 11 redundant places. [2023-11-12 02:08:29,061 INFO L231 Difference]: Finished difference. Result has 42 places, 0 transitions, 0 flow [2023-11-12 02:08:29,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=42, PETRI_TRANSITIONS=0} [2023-11-12 02:08:29,063 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 13 predicate places. [2023-11-12 02:08:29,063 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 0 transitions, 0 flow [2023-11-12 02:08:29,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 71.5) internal successors, (858), 12 states have internal predecessors, (858), 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) [2023-11-12 02:08:29,067 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-11-12 02:08:29,068 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-11-12 02:08:29,070 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-11-12 02:08:29,070 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-11-12 02:08:29,070 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-11-12 02:08:29,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 02:08:29,071 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1] [2023-11-12 02:08:29,076 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-12 02:08:29,076 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 02:08:29,081 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 02:08:29 BasicIcfg [2023-11-12 02:08:29,081 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 02:08:29,081 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 02:08:29,082 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 02:08:29,082 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 02:08:29,082 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:08:07" (3/4) ... [2023-11-12 02:08:29,084 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-12 02:08:29,087 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-12 02:08:29,087 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-12 02:08:29,095 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 29 nodes and edges [2023-11-12 02:08:29,095 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2023-11-12 02:08:29,096 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-12 02:08:29,097 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-12 02:08:29,221 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02f74c-5832-4aaf-95f5-461e2ad7425b/bin/uautomizer-verify-uTZkv6EMXl/witness.graphml [2023-11-12 02:08:29,222 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02f74c-5832-4aaf-95f5-461e2ad7425b/bin/uautomizer-verify-uTZkv6EMXl/witness.yml [2023-11-12 02:08:29,222 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 02:08:29,223 INFO L158 Benchmark]: Toolchain (without parser) took 23867.48ms. Allocated memory was 155.2MB in the beginning and 390.1MB in the end (delta: 234.9MB). Free memory was 122.3MB in the beginning and 272.2MB in the end (delta: -149.9MB). Peak memory consumption was 85.3MB. Max. memory is 16.1GB. [2023-11-12 02:08:29,223 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 119.5MB. Free memory is still 92.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:08:29,224 INFO L158 Benchmark]: CACSL2BoogieTranslator took 851.28ms. Allocated memory is still 155.2MB. Free memory was 121.7MB in the beginning and 95.8MB in the end (delta: 25.9MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-11-12 02:08:29,224 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.88ms. Allocated memory is still 155.2MB. Free memory was 95.8MB in the beginning and 92.5MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 02:08:29,224 INFO L158 Benchmark]: Boogie Preprocessor took 56.18ms. Allocated memory is still 155.2MB. Free memory was 92.5MB in the beginning and 90.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 02:08:29,225 INFO L158 Benchmark]: RCFGBuilder took 1056.87ms. Allocated memory is still 155.2MB. Free memory was 90.4MB in the beginning and 73.6MB in the end (delta: 16.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-12 02:08:29,226 INFO L158 Benchmark]: TraceAbstraction took 21688.91ms. Allocated memory was 155.2MB in the beginning and 390.1MB in the end (delta: 234.9MB). Free memory was 72.8MB in the beginning and 276.4MB in the end (delta: -203.6MB). Peak memory consumption was 34.0MB. Max. memory is 16.1GB. [2023-11-12 02:08:29,226 INFO L158 Benchmark]: Witness Printer took 140.95ms. Allocated memory is still 390.1MB. Free memory was 276.4MB in the beginning and 272.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-12 02:08:29,228 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 119.5MB. Free memory is still 92.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 851.28ms. Allocated memory is still 155.2MB. Free memory was 121.7MB in the beginning and 95.8MB in the end (delta: 25.9MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.88ms. Allocated memory is still 155.2MB. Free memory was 95.8MB in the beginning and 92.5MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.18ms. Allocated memory is still 155.2MB. Free memory was 92.5MB in the beginning and 90.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1056.87ms. Allocated memory is still 155.2MB. Free memory was 90.4MB in the beginning and 73.6MB in the end (delta: 16.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 21688.91ms. Allocated memory was 155.2MB in the beginning and 390.1MB in the end (delta: 234.9MB). Free memory was 72.8MB in the beginning and 276.4MB in the end (delta: -203.6MB). Peak memory consumption was 34.0MB. Max. memory is 16.1GB. * Witness Printer took 140.95ms. Allocated memory is still 390.1MB. Free memory was 276.4MB in the beginning and 272.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.1s, 98 PlacesBefore, 29 PlacesAfterwards, 93 TransitionsBefore, 23 TransitionsAfterwards, 1388 CoEnabledTransitionPairs, 7 FixpointIterations, 35 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 80 TotalNumberOfCompositions, 4590 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1785, independent: 1580, independent conditional: 0, independent unconditional: 1580, dependent: 205, dependent conditional: 0, dependent unconditional: 205, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 740, independent: 709, independent conditional: 0, independent unconditional: 709, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1785, independent: 871, independent conditional: 0, independent unconditional: 871, dependent: 174, dependent conditional: 0, dependent unconditional: 174, unknown: 740, unknown conditional: 0, unknown unconditional: 740] , Statistics on independence cache: Total cache size (in pairs): 61, Positive cache size: 47, Positive conditional cache size: 0, Positive unconditional cache size: 47, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 116 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 21.5s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 4.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 556 SdHoareTripleChecker+Valid, 2.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 447 mSDsluCounter, 759 SdHoareTripleChecker+Invalid, 2.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 709 mSDsCounter, 183 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1686 IncrementalHoareTripleChecker+Invalid, 1869 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 183 mSolverCounterUnsat, 50 mSDtfsCounter, 1686 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 71 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=309occurred in iteration=7, InterpolantAutomatonStates: 67, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 12.1s InterpolantComputationTime, 136 NumberOfCodeBlocks, 136 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 126 ConstructedInterpolants, 0 QuantifiedInterpolants, 1677 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-12 02:08:29,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02f74c-5832-4aaf-95f5-461e2ad7425b/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE