./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix055_power.oepc_pso.oepc_rmo.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b4bd4e-e083-4b80-a83a-f80ef3ac4bcb/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b4bd4e-e083-4b80-a83a-f80ef3ac4bcb/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b4bd4e-e083-4b80-a83a-f80ef3ac4bcb/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b4bd4e-e083-4b80-a83a-f80ef3ac4bcb/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix055_power.oepc_pso.oepc_rmo.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b4bd4e-e083-4b80-a83a-f80ef3ac4bcb/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b4bd4e-e083-4b80-a83a-f80ef3ac4bcb/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 b8efebf87dc67f98045ac231dc43d6a61f436e058244f16134f1d46d3b696c80 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:03:38,590 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:03:38,703 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b4bd4e-e083-4b80-a83a-f80ef3ac4bcb/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:03:38,713 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:03:38,717 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:03:38,753 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:03:38,755 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:03:38,756 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:03:38,757 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:03:38,762 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:03:38,763 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:03:38,763 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:03:38,764 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:03:38,766 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:03:38,766 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:03:38,766 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:03:38,767 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:03:38,767 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:03:38,768 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:03:38,768 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:03:38,768 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:03:38,769 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:03:38,769 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:03:38,770 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:03:38,770 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:03:38,771 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:03:38,771 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:03:38,772 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:03:38,772 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:03:38,773 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:03:38,774 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:03:38,774 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:03:38,774 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:03:38,775 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:03:38,775 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:03:38,775 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:03:38,775 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:03:38,776 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:03:38,776 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:03:38,776 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_d2b4bd4e-e083-4b80-a83a-f80ef3ac4bcb/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b4bd4e-e083-4b80-a83a-f80ef3ac4bcb/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8efebf87dc67f98045ac231dc43d6a61f436e058244f16134f1d46d3b696c80 [2023-11-06 22:03:39,079 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:03:39,104 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:03:39,107 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:03:39,111 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:03:39,111 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:03:39,113 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b4bd4e-e083-4b80-a83a-f80ef3ac4bcb/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread-wmm/mix055_power.oepc_pso.oepc_rmo.oepc.i [2023-11-06 22:03:42,279 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:03:42,558 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:03:42,558 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b4bd4e-e083-4b80-a83a-f80ef3ac4bcb/sv-benchmarks/c/pthread-wmm/mix055_power.oepc_pso.oepc_rmo.oepc.i [2023-11-06 22:03:42,582 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b4bd4e-e083-4b80-a83a-f80ef3ac4bcb/bin/uautomizer-verify-WvqO1wxjHP/data/35fa7d061/7d558f6cd02043ebb44a72846d9fc9fa/FLAGc2aab302c [2023-11-06 22:03:42,604 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b4bd4e-e083-4b80-a83a-f80ef3ac4bcb/bin/uautomizer-verify-WvqO1wxjHP/data/35fa7d061/7d558f6cd02043ebb44a72846d9fc9fa [2023-11-06 22:03:42,612 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:03:42,614 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:03:42,618 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:03:42,619 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:03:42,625 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:03:42,625 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:03:42" (1/1) ... [2023-11-06 22:03:42,627 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a811fcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:42, skipping insertion in model container [2023-11-06 22:03:42,627 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:03:42" (1/1) ... [2023-11-06 22:03:42,705 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:03:42,891 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_d2b4bd4e-e083-4b80-a83a-f80ef3ac4bcb/sv-benchmarks/c/pthread-wmm/mix055_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2023-11-06 22:03:43,178 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:03:43,194 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:03:43,211 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_d2b4bd4e-e083-4b80-a83a-f80ef3ac4bcb/sv-benchmarks/c/pthread-wmm/mix055_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2023-11-06 22:03:43,280 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:03:43,318 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:03:43,318 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:03:43,326 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:03:43,327 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:43 WrapperNode [2023-11-06 22:03:43,327 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:03:43,329 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:03:43,329 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:03:43,329 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:03:43,338 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:43" (1/1) ... [2023-11-06 22:03:43,377 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:43" (1/1) ... [2023-11-06 22:03:43,436 INFO L138 Inliner]: procedures = 177, calls = 67, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 142 [2023-11-06 22:03:43,437 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:03:43,437 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:03:43,438 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:03:43,438 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:03:43,448 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:43" (1/1) ... [2023-11-06 22:03:43,448 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:43" (1/1) ... [2023-11-06 22:03:43,463 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:43" (1/1) ... [2023-11-06 22:03:43,468 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:43" (1/1) ... [2023-11-06 22:03:43,478 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:43" (1/1) ... [2023-11-06 22:03:43,497 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:43" (1/1) ... [2023-11-06 22:03:43,500 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:43" (1/1) ... [2023-11-06 22:03:43,502 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:43" (1/1) ... [2023-11-06 22:03:43,514 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:03:43,515 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:03:43,521 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:03:43,522 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:03:43,523 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:43" (1/1) ... [2023-11-06 22:03:43,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:03:43,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b4bd4e-e083-4b80-a83a-f80ef3ac4bcb/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:03:43,555 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b4bd4e-e083-4b80-a83a-f80ef3ac4bcb/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:03:43,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b4bd4e-e083-4b80-a83a-f80ef3ac4bcb/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:03:43,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:03:43,599 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:03:43,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:03:43,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:03:43,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:03:43,600 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-06 22:03:43,600 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-06 22:03:43,600 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-06 22:03:43,600 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-06 22:03:43,600 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-06 22:03:43,602 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-06 22:03:43,602 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-06 22:03:43,603 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-06 22:03:43,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:03:43,603 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:03:43,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:03:43,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:03:43,605 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:03:43,786 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:03:43,788 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:03:44,244 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:03:44,438 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:03:44,439 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 22:03:44,441 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:03:44 BoogieIcfgContainer [2023-11-06 22:03:44,442 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:03:44,445 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:03:44,445 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:03:44,449 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:03:44,449 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:03:42" (1/3) ... [2023-11-06 22:03:44,450 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@372dcff3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:03:44, skipping insertion in model container [2023-11-06 22:03:44,451 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:43" (2/3) ... [2023-11-06 22:03:44,451 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@372dcff3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:03:44, skipping insertion in model container [2023-11-06 22:03:44,451 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:03:44" (3/3) ... [2023-11-06 22:03:44,453 INFO L112 eAbstractionObserver]: Analyzing ICFG mix055_power.oepc_pso.oepc_rmo.oepc.i [2023-11-06 22:03:44,463 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:03:44,475 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:03:44,475 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-06 22:03:44,475 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:03:44,554 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:03:44,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 142 places, 131 transitions, 278 flow [2023-11-06 22:03:44,710 INFO L124 PetriNetUnfolderBase]: 2/127 cut-off events. [2023-11-06 22:03:44,711 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:03:44,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 127 events. 2/127 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 69 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2023-11-06 22:03:44,717 INFO L82 GeneralOperation]: Start removeDead. Operand has 142 places, 131 transitions, 278 flow [2023-11-06 22:03:44,729 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 138 places, 127 transitions, 266 flow [2023-11-06 22:03:44,733 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:03:44,755 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 138 places, 127 transitions, 266 flow [2023-11-06 22:03:44,760 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 138 places, 127 transitions, 266 flow [2023-11-06 22:03:44,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 127 transitions, 266 flow [2023-11-06 22:03:44,823 INFO L124 PetriNetUnfolderBase]: 2/127 cut-off events. [2023-11-06 22:03:44,823 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:03:44,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 127 events. 2/127 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 69 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2023-11-06 22:03:44,830 INFO L119 LiptonReduction]: Number of co-enabled transitions 3290 [2023-11-06 22:03:49,821 INFO L134 LiptonReduction]: Checked pairs total: 8888 [2023-11-06 22:03:49,822 INFO L136 LiptonReduction]: Total number of compositions: 111 [2023-11-06 22:03:49,848 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:03:49,862 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=LoopsAndPotentialCycles, 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;@7e7d7c7b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:03:49,862 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-06 22:03:49,871 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:03:49,872 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-06 22:03:49,872 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:03:49,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:03:49,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:03:49,874 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:03:49,879 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:03:49,879 INFO L85 PathProgramCache]: Analyzing trace with hash 554376, now seen corresponding path program 1 times [2023-11-06 22:03:49,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:03:49,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404963685] [2023-11-06 22:03:49,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:03:49,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:03:50,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:03:50,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:03:50,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:03:50,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404963685] [2023-11-06 22:03:50,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404963685] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:03:50,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:03:50,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:03:50,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759868072] [2023-11-06 22:03:50,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:03:50,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:03:50,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:03:50,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:03:50,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:03:50,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 242 [2023-11-06 22:03:50,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 30 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 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) [2023-11-06 22:03:50,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:03:50,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 242 [2023-11-06 22:03:50,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:03:51,850 INFO L124 PetriNetUnfolderBase]: 4903/7121 cut-off events. [2023-11-06 22:03:51,851 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2023-11-06 22:03:51,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13969 conditions, 7121 events. 4903/7121 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 41475 event pairs, 895 based on Foata normal form. 0/6795 useless extension candidates. Maximal degree in co-relation 13957. Up to 5335 conditions per place. [2023-11-06 22:03:51,976 INFO L140 encePairwiseOnDemand]: 238/242 looper letters, 41 selfloop transitions, 2 changer transitions 2/48 dead transitions. [2023-11-06 22:03:51,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 48 transitions, 207 flow [2023-11-06 22:03:51,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:03:51,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:03:51,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 393 transitions. [2023-11-06 22:03:51,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5413223140495868 [2023-11-06 22:03:51,999 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 393 transitions. [2023-11-06 22:03:51,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 393 transitions. [2023-11-06 22:03:52,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:03:52,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 393 transitions. [2023-11-06 22:03:52,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 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) [2023-11-06 22:03:52,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 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) [2023-11-06 22:03:52,019 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 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) [2023-11-06 22:03:52,021 INFO L175 Difference]: Start difference. First operand has 42 places, 30 transitions, 72 flow. Second operand 3 states and 393 transitions. [2023-11-06 22:03:52,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 48 transitions, 207 flow [2023-11-06 22:03:52,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 48 transitions, 200 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-06 22:03:52,030 INFO L231 Difference]: Finished difference. Result has 39 places, 27 transitions, 66 flow [2023-11-06 22:03:52,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=39, PETRI_TRANSITIONS=27} [2023-11-06 22:03:52,037 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -3 predicate places. [2023-11-06 22:03:52,037 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 27 transitions, 66 flow [2023-11-06 22:03:52,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 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) [2023-11-06 22:03:52,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:03:52,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:03:52,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:03:52,039 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:03:52,040 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:03:52,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1345374551, now seen corresponding path program 1 times [2023-11-06 22:03:52,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:03:52,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29265202] [2023-11-06 22:03:52,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:03:52,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:03:52,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:03:52,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:03:52,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:03:52,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29265202] [2023-11-06 22:03:52,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29265202] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:03:52,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:03:52,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:03:52,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930428262] [2023-11-06 22:03:52,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:03:52,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:03:52,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:03:52,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:03:52,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:03:52,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 242 [2023-11-06 22:03:52,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 27 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 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) [2023-11-06 22:03:52,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:03:52,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 242 [2023-11-06 22:03:52,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:03:55,420 INFO L124 PetriNetUnfolderBase]: 13646/18640 cut-off events. [2023-11-06 22:03:55,421 INFO L125 PetriNetUnfolderBase]: For 868/868 co-relation queries the response was YES. [2023-11-06 22:03:55,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38657 conditions, 18640 events. 13646/18640 cut-off events. For 868/868 co-relation queries the response was YES. Maximal size of possible extension queue 649. Compared 97981 event pairs, 4702 based on Foata normal form. 529/19169 useless extension candidates. Maximal degree in co-relation 38647. Up to 10935 conditions per place. [2023-11-06 22:03:55,554 INFO L140 encePairwiseOnDemand]: 234/242 looper letters, 42 selfloop transitions, 7 changer transitions 0/49 dead transitions. [2023-11-06 22:03:55,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 49 transitions, 214 flow [2023-11-06 22:03:55,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:03:55,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:03:55,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 371 transitions. [2023-11-06 22:03:55,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5110192837465565 [2023-11-06 22:03:55,557 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 371 transitions. [2023-11-06 22:03:55,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 371 transitions. [2023-11-06 22:03:55,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:03:55,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 371 transitions. [2023-11-06 22:03:55,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 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) [2023-11-06 22:03:55,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 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) [2023-11-06 22:03:55,566 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 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) [2023-11-06 22:03:55,567 INFO L175 Difference]: Start difference. First operand has 39 places, 27 transitions, 66 flow. Second operand 3 states and 371 transitions. [2023-11-06 22:03:55,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 49 transitions, 214 flow [2023-11-06 22:03:55,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 49 transitions, 208 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:03:55,571 INFO L231 Difference]: Finished difference. Result has 40 places, 33 transitions, 116 flow [2023-11-06 22:03:55,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=40, PETRI_TRANSITIONS=33} [2023-11-06 22:03:55,578 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -2 predicate places. [2023-11-06 22:03:55,578 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 33 transitions, 116 flow [2023-11-06 22:03:55,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 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) [2023-11-06 22:03:55,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:03:55,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:03:55,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:03:55,580 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:03:55,580 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:03:55,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1243062517, now seen corresponding path program 1 times [2023-11-06 22:03:55,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:03:55,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86490997] [2023-11-06 22:03:55,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:03:55,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:03:55,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:03:55,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:03:55,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:03:55,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86490997] [2023-11-06 22:03:55,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86490997] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:03:55,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:03:55,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:03:55,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255902477] [2023-11-06 22:03:55,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:03:55,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:03:55,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:03:55,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:03:55,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:03:55,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 242 [2023-11-06 22:03:55,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 33 transitions, 116 flow. Second operand has 4 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:03:55,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:03:55,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 242 [2023-11-06 22:03:55,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:03:58,421 INFO L124 PetriNetUnfolderBase]: 13388/18294 cut-off events. [2023-11-06 22:03:58,421 INFO L125 PetriNetUnfolderBase]: For 6811/6811 co-relation queries the response was YES. [2023-11-06 22:03:58,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45582 conditions, 18294 events. 13388/18294 cut-off events. For 6811/6811 co-relation queries the response was YES. Maximal size of possible extension queue 634. Compared 94441 event pairs, 1209 based on Foata normal form. 40/18334 useless extension candidates. Maximal degree in co-relation 45570. Up to 10001 conditions per place. [2023-11-06 22:03:58,538 INFO L140 encePairwiseOnDemand]: 234/242 looper letters, 55 selfloop transitions, 11 changer transitions 0/66 dead transitions. [2023-11-06 22:03:58,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 66 transitions, 346 flow [2023-11-06 22:03:58,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:03:58,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:03:58,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 491 transitions. [2023-11-06 22:03:58,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5072314049586777 [2023-11-06 22:03:58,542 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 491 transitions. [2023-11-06 22:03:58,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 491 transitions. [2023-11-06 22:03:58,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:03:58,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 491 transitions. [2023-11-06 22:03:58,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 122.75) internal successors, (491), 4 states have internal predecessors, (491), 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) [2023-11-06 22:03:58,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 242.0) internal successors, (1210), 5 states have internal predecessors, (1210), 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) [2023-11-06 22:03:58,548 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 242.0) internal successors, (1210), 5 states have internal predecessors, (1210), 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) [2023-11-06 22:03:58,548 INFO L175 Difference]: Start difference. First operand has 40 places, 33 transitions, 116 flow. Second operand 4 states and 491 transitions. [2023-11-06 22:03:58,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 66 transitions, 346 flow [2023-11-06 22:03:58,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 66 transitions, 322 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:03:58,600 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 186 flow [2023-11-06 22:03:58,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=186, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2023-11-06 22:03:58,602 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 2 predicate places. [2023-11-06 22:03:58,606 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 186 flow [2023-11-06 22:03:58,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:03:58,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:03:58,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:03:58,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:03:58,608 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:03:58,608 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:03:58,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1243063509, now seen corresponding path program 1 times [2023-11-06 22:03:58,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:03:58,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740551278] [2023-11-06 22:03:58,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:03:58,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:03:58,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:03:58,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:03:58,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:03:58,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740551278] [2023-11-06 22:03:58,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740551278] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:03:58,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:03:58,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:03:58,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498104902] [2023-11-06 22:03:58,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:03:58,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:03:58,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:03:58,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:03:58,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:03:58,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 242 [2023-11-06 22:03:58,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 186 flow. Second operand has 4 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:03:58,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:03:58,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 242 [2023-11-06 22:03:58,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:04:01,039 INFO L124 PetriNetUnfolderBase]: 13130/17948 cut-off events. [2023-11-06 22:04:01,039 INFO L125 PetriNetUnfolderBase]: For 14237/14237 co-relation queries the response was YES. [2023-11-06 22:04:01,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48499 conditions, 17948 events. 13130/17948 cut-off events. For 14237/14237 co-relation queries the response was YES. Maximal size of possible extension queue 613. Compared 93936 event pairs, 2522 based on Foata normal form. 40/17988 useless extension candidates. Maximal degree in co-relation 48484. Up to 10157 conditions per place. [2023-11-06 22:04:01,170 INFO L140 encePairwiseOnDemand]: 234/242 looper letters, 64 selfloop transitions, 17 changer transitions 0/81 dead transitions. [2023-11-06 22:04:01,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 81 transitions, 492 flow [2023-11-06 22:04:01,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:04:01,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:04:01,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 497 transitions. [2023-11-06 22:04:01,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5134297520661157 [2023-11-06 22:04:01,173 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 497 transitions. [2023-11-06 22:04:01,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 497 transitions. [2023-11-06 22:04:01,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:04:01,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 497 transitions. [2023-11-06 22:04:01,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 124.25) internal successors, (497), 4 states have internal predecessors, (497), 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) [2023-11-06 22:04:01,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 242.0) internal successors, (1210), 5 states have internal predecessors, (1210), 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) [2023-11-06 22:04:01,179 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 242.0) internal successors, (1210), 5 states have internal predecessors, (1210), 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) [2023-11-06 22:04:01,179 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 186 flow. Second operand 4 states and 497 transitions. [2023-11-06 22:04:01,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 81 transitions, 492 flow [2023-11-06 22:04:01,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 81 transitions, 492 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:04:01,229 INFO L231 Difference]: Finished difference. Result has 50 places, 49 transitions, 330 flow [2023-11-06 22:04:01,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=330, PETRI_PLACES=50, PETRI_TRANSITIONS=49} [2023-11-06 22:04:01,231 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 8 predicate places. [2023-11-06 22:04:01,232 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 49 transitions, 330 flow [2023-11-06 22:04:01,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:01,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:04:01,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:04:01,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:04:01,234 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:04:01,234 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:01,234 INFO L85 PathProgramCache]: Analyzing trace with hash 119766007, now seen corresponding path program 1 times [2023-11-06 22:04:01,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:04:01,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929093300] [2023-11-06 22:04:01,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:01,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:04:01,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:01,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:04:01,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:04:01,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929093300] [2023-11-06 22:04:01,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929093300] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:04:01,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:04:01,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:04:01,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934252188] [2023-11-06 22:04:01,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:04:01,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:04:01,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:04:01,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:04:01,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:04:01,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 242 [2023-11-06 22:04:01,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 49 transitions, 330 flow. Second operand has 4 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 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) [2023-11-06 22:04:01,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:04:01,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 242 [2023-11-06 22:04:01,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:04:03,476 INFO L124 PetriNetUnfolderBase]: 8699/12788 cut-off events. [2023-11-06 22:04:03,477 INFO L125 PetriNetUnfolderBase]: For 22683/23807 co-relation queries the response was YES. [2023-11-06 22:04:03,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35836 conditions, 12788 events. 8699/12788 cut-off events. For 22683/23807 co-relation queries the response was YES. Maximal size of possible extension queue 636. Compared 77913 event pairs, 1431 based on Foata normal form. 1289/13842 useless extension candidates. Maximal degree in co-relation 35816. Up to 8037 conditions per place. [2023-11-06 22:04:03,589 INFO L140 encePairwiseOnDemand]: 235/242 looper letters, 104 selfloop transitions, 10 changer transitions 0/127 dead transitions. [2023-11-06 22:04:03,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 127 transitions, 1024 flow [2023-11-06 22:04:03,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:04:03,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:04:03,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 617 transitions. [2023-11-06 22:04:03,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5099173553719009 [2023-11-06 22:04:03,593 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 617 transitions. [2023-11-06 22:04:03,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 617 transitions. [2023-11-06 22:04:03,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:04:03,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 617 transitions. [2023-11-06 22:04:03,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 123.4) internal successors, (617), 5 states have internal predecessors, (617), 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) [2023-11-06 22:04:03,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 242.0) internal successors, (1452), 6 states have internal predecessors, (1452), 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) [2023-11-06 22:04:03,602 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 242.0) internal successors, (1452), 6 states have internal predecessors, (1452), 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) [2023-11-06 22:04:03,603 INFO L175 Difference]: Start difference. First operand has 50 places, 49 transitions, 330 flow. Second operand 5 states and 617 transitions. [2023-11-06 22:04:03,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 127 transitions, 1024 flow [2023-11-06 22:04:03,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 127 transitions, 1024 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:04:03,643 INFO L231 Difference]: Finished difference. Result has 57 places, 58 transitions, 405 flow [2023-11-06 22:04:03,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=405, PETRI_PLACES=57, PETRI_TRANSITIONS=58} [2023-11-06 22:04:03,646 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 15 predicate places. [2023-11-06 22:04:03,646 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 58 transitions, 405 flow [2023-11-06 22:04:03,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 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) [2023-11-06 22:04:03,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:04:03,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:04:03,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:04:03,648 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:04:03,648 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:03,649 INFO L85 PathProgramCache]: Analyzing trace with hash -589203698, now seen corresponding path program 1 times [2023-11-06 22:04:03,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:04:03,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521049309] [2023-11-06 22:04:03,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:03,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:04:03,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:03,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:04:03,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:04:03,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521049309] [2023-11-06 22:04:03,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521049309] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:04:03,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:04:03,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:04:03,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373881214] [2023-11-06 22:04:03,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:04:03,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:04:03,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:04:03,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:04:03,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:04:03,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 242 [2023-11-06 22:04:03,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 58 transitions, 405 flow. Second operand has 4 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 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) [2023-11-06 22:04:03,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:04:03,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 242 [2023-11-06 22:04:03,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:04:06,938 INFO L124 PetriNetUnfolderBase]: 15353/21965 cut-off events. [2023-11-06 22:04:06,938 INFO L125 PetriNetUnfolderBase]: For 54169/54169 co-relation queries the response was YES. [2023-11-06 22:04:07,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80254 conditions, 21965 events. 15353/21965 cut-off events. For 54169/54169 co-relation queries the response was YES. Maximal size of possible extension queue 831. Compared 130739 event pairs, 4329 based on Foata normal form. 223/22188 useless extension candidates. Maximal degree in co-relation 80229. Up to 9905 conditions per place. [2023-11-06 22:04:07,065 INFO L140 encePairwiseOnDemand]: 234/242 looper letters, 80 selfloop transitions, 19 changer transitions 20/119 dead transitions. [2023-11-06 22:04:07,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 119 transitions, 953 flow [2023-11-06 22:04:07,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:04:07,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:04:07,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 500 transitions. [2023-11-06 22:04:07,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5165289256198347 [2023-11-06 22:04:07,069 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 500 transitions. [2023-11-06 22:04:07,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 500 transitions. [2023-11-06 22:04:07,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:04:07,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 500 transitions. [2023-11-06 22:04:07,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 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) [2023-11-06 22:04:07,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 242.0) internal successors, (1210), 5 states have internal predecessors, (1210), 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) [2023-11-06 22:04:07,076 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 242.0) internal successors, (1210), 5 states have internal predecessors, (1210), 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) [2023-11-06 22:04:07,076 INFO L175 Difference]: Start difference. First operand has 57 places, 58 transitions, 405 flow. Second operand 4 states and 500 transitions. [2023-11-06 22:04:07,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 119 transitions, 953 flow [2023-11-06 22:04:07,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 119 transitions, 940 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:04:07,207 INFO L231 Difference]: Finished difference. Result has 62 places, 55 transitions, 484 flow [2023-11-06 22:04:07,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=484, PETRI_PLACES=62, PETRI_TRANSITIONS=55} [2023-11-06 22:04:07,211 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 20 predicate places. [2023-11-06 22:04:07,211 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 55 transitions, 484 flow [2023-11-06 22:04:07,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 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) [2023-11-06 22:04:07,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:04:07,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:04:07,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:04:07,212 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:04:07,212 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:07,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1042251744, now seen corresponding path program 1 times [2023-11-06 22:04:07,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:04:07,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749962268] [2023-11-06 22:04:07,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:07,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:04:07,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:07,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:04:07,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:04:07,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749962268] [2023-11-06 22:04:07,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749962268] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:04:07,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:04:07,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:04:07,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916553332] [2023-11-06 22:04:07,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:04:07,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:04:07,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:04:07,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:04:07,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:04:07,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 242 [2023-11-06 22:04:07,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 55 transitions, 484 flow. Second operand has 5 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 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) [2023-11-06 22:04:07,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:04:07,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 242 [2023-11-06 22:04:07,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:04:08,909 INFO L124 PetriNetUnfolderBase]: 6334/9818 cut-off events. [2023-11-06 22:04:08,910 INFO L125 PetriNetUnfolderBase]: For 26915/27493 co-relation queries the response was YES. [2023-11-06 22:04:08,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34296 conditions, 9818 events. 6334/9818 cut-off events. For 26915/27493 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 62542 event pairs, 948 based on Foata normal form. 1059/10707 useless extension candidates. Maximal degree in co-relation 34267. Up to 3583 conditions per place. [2023-11-06 22:04:08,973 INFO L140 encePairwiseOnDemand]: 235/242 looper letters, 126 selfloop transitions, 14 changer transitions 1/154 dead transitions. [2023-11-06 22:04:08,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 154 transitions, 1540 flow [2023-11-06 22:04:08,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:04:08,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:04:08,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 743 transitions. [2023-11-06 22:04:08,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5117079889807162 [2023-11-06 22:04:08,977 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 743 transitions. [2023-11-06 22:04:08,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 743 transitions. [2023-11-06 22:04:08,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:04:08,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 743 transitions. [2023-11-06 22:04:08,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 123.83333333333333) internal successors, (743), 6 states have internal predecessors, (743), 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) [2023-11-06 22:04:08,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 242.0) internal successors, (1694), 7 states have internal predecessors, (1694), 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) [2023-11-06 22:04:08,986 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 242.0) internal successors, (1694), 7 states have internal predecessors, (1694), 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) [2023-11-06 22:04:08,986 INFO L175 Difference]: Start difference. First operand has 62 places, 55 transitions, 484 flow. Second operand 6 states and 743 transitions. [2023-11-06 22:04:08,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 154 transitions, 1540 flow [2023-11-06 22:04:09,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 154 transitions, 1475 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-11-06 22:04:09,121 INFO L231 Difference]: Finished difference. Result has 66 places, 64 transitions, 581 flow [2023-11-06 22:04:09,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=581, PETRI_PLACES=66, PETRI_TRANSITIONS=64} [2023-11-06 22:04:09,122 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 24 predicate places. [2023-11-06 22:04:09,122 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 64 transitions, 581 flow [2023-11-06 22:04:09,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 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) [2023-11-06 22:04:09,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:04:09,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:04:09,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:04:09,123 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:04:09,124 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:09,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1414655204, now seen corresponding path program 1 times [2023-11-06 22:04:09,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:04:09,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515929400] [2023-11-06 22:04:09,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:09,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:04:09,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:09,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:04:09,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:04:09,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515929400] [2023-11-06 22:04:09,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515929400] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:04:09,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:04:09,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:04:09,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482046059] [2023-11-06 22:04:09,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:04:09,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:04:09,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:04:09,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:04:09,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:04:09,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 242 [2023-11-06 22:04:09,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 64 transitions, 581 flow. Second operand has 4 states, 4 states have (on average 110.25) internal successors, (441), 4 states have internal predecessors, (441), 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) [2023-11-06 22:04:09,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:04:09,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 242 [2023-11-06 22:04:09,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:04:11,520 INFO L124 PetriNetUnfolderBase]: 9970/14918 cut-off events. [2023-11-06 22:04:11,520 INFO L125 PetriNetUnfolderBase]: For 65047/65047 co-relation queries the response was YES. [2023-11-06 22:04:11,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64697 conditions, 14918 events. 9970/14918 cut-off events. For 65047/65047 co-relation queries the response was YES. Maximal size of possible extension queue 590. Compared 91532 event pairs, 1007 based on Foata normal form. 75/14993 useless extension candidates. Maximal degree in co-relation 64665. Up to 8603 conditions per place. [2023-11-06 22:04:11,607 INFO L140 encePairwiseOnDemand]: 233/242 looper letters, 100 selfloop transitions, 33 changer transitions 25/158 dead transitions. [2023-11-06 22:04:11,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 158 transitions, 1627 flow [2023-11-06 22:04:11,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:04:11,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:04:11,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 608 transitions. [2023-11-06 22:04:11,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5024793388429752 [2023-11-06 22:04:11,611 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 608 transitions. [2023-11-06 22:04:11,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 608 transitions. [2023-11-06 22:04:11,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:04:11,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 608 transitions. [2023-11-06 22:04:11,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 121.6) internal successors, (608), 5 states have internal predecessors, (608), 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) [2023-11-06 22:04:11,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 242.0) internal successors, (1452), 6 states have internal predecessors, (1452), 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) [2023-11-06 22:04:11,617 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 242.0) internal successors, (1452), 6 states have internal predecessors, (1452), 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) [2023-11-06 22:04:11,617 INFO L175 Difference]: Start difference. First operand has 66 places, 64 transitions, 581 flow. Second operand 5 states and 608 transitions. [2023-11-06 22:04:11,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 158 transitions, 1627 flow [2023-11-06 22:04:12,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 158 transitions, 1477 flow, removed 60 selfloop flow, removed 2 redundant places. [2023-11-06 22:04:12,390 INFO L231 Difference]: Finished difference. Result has 71 places, 75 transitions, 826 flow [2023-11-06 22:04:12,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=537, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=826, PETRI_PLACES=71, PETRI_TRANSITIONS=75} [2023-11-06 22:04:12,391 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 29 predicate places. [2023-11-06 22:04:12,391 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 75 transitions, 826 flow [2023-11-06 22:04:12,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 110.25) internal successors, (441), 4 states have internal predecessors, (441), 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) [2023-11-06 22:04:12,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:04:12,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:04:12,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:04:12,392 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:04:12,393 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:12,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1414664613, now seen corresponding path program 1 times [2023-11-06 22:04:12,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:04:12,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425927241] [2023-11-06 22:04:12,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:12,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:04:12,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:12,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:04:12,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:04:12,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425927241] [2023-11-06 22:04:12,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425927241] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:04:12,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:04:12,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:04:12,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551608602] [2023-11-06 22:04:12,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:04:12,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:04:12,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:04:12,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:04:12,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:04:12,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 242 [2023-11-06 22:04:12,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 75 transitions, 826 flow. Second operand has 6 states, 6 states have (on average 112.0) internal successors, (672), 6 states have internal predecessors, (672), 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) [2023-11-06 22:04:12,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:04:12,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 242 [2023-11-06 22:04:12,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:04:13,919 INFO L124 PetriNetUnfolderBase]: 4648/7388 cut-off events. [2023-11-06 22:04:13,920 INFO L125 PetriNetUnfolderBase]: For 27560/27871 co-relation queries the response was YES. [2023-11-06 22:04:13,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28905 conditions, 7388 events. 4648/7388 cut-off events. For 27560/27871 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 46720 event pairs, 829 based on Foata normal form. 534/7793 useless extension candidates. Maximal degree in co-relation 28870. Up to 2450 conditions per place. [2023-11-06 22:04:13,964 INFO L140 encePairwiseOnDemand]: 235/242 looper letters, 131 selfloop transitions, 18 changer transitions 40/207 dead transitions. [2023-11-06 22:04:13,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 207 transitions, 2449 flow [2023-11-06 22:04:13,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:04:13,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:04:13,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 867 transitions. [2023-11-06 22:04:13,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5118063754427391 [2023-11-06 22:04:13,972 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 867 transitions. [2023-11-06 22:04:13,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 867 transitions. [2023-11-06 22:04:13,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:04:13,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 867 transitions. [2023-11-06 22:04:13,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 123.85714285714286) internal successors, (867), 7 states have internal predecessors, (867), 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) [2023-11-06 22:04:13,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 242.0) internal successors, (1936), 8 states have internal predecessors, (1936), 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) [2023-11-06 22:04:13,981 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 242.0) internal successors, (1936), 8 states have internal predecessors, (1936), 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) [2023-11-06 22:04:13,981 INFO L175 Difference]: Start difference. First operand has 71 places, 75 transitions, 826 flow. Second operand 7 states and 867 transitions. [2023-11-06 22:04:13,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 207 transitions, 2449 flow [2023-11-06 22:04:14,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 207 transitions, 2413 flow, removed 18 selfloop flow, removed 2 redundant places. [2023-11-06 22:04:14,080 INFO L231 Difference]: Finished difference. Result has 76 places, 83 transitions, 934 flow [2023-11-06 22:04:14,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=814, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=934, PETRI_PLACES=76, PETRI_TRANSITIONS=83} [2023-11-06 22:04:14,081 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 34 predicate places. [2023-11-06 22:04:14,081 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 83 transitions, 934 flow [2023-11-06 22:04:14,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 112.0) internal successors, (672), 6 states have internal predecessors, (672), 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) [2023-11-06 22:04:14,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:04:14,082 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:04:14,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:04:14,083 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:04:14,083 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:14,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1389321514, now seen corresponding path program 1 times [2023-11-06 22:04:14,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:04:14,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952624832] [2023-11-06 22:04:14,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:14,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:04:14,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:15,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:04:15,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:04:15,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952624832] [2023-11-06 22:04:15,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952624832] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:04:15,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:04:15,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:04:15,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048645802] [2023-11-06 22:04:15,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:04:15,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:04:15,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:04:15,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:04:15,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:04:15,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 242 [2023-11-06 22:04:15,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 83 transitions, 934 flow. Second operand has 7 states, 7 states have (on average 114.0) internal successors, (798), 7 states have internal predecessors, (798), 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) [2023-11-06 22:04:15,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:04:15,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 242 [2023-11-06 22:04:15,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:04:17,428 INFO L124 PetriNetUnfolderBase]: 7344/12060 cut-off events. [2023-11-06 22:04:17,428 INFO L125 PetriNetUnfolderBase]: For 55526/55883 co-relation queries the response was YES. [2023-11-06 22:04:17,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53877 conditions, 12060 events. 7344/12060 cut-off events. For 55526/55883 co-relation queries the response was YES. Maximal size of possible extension queue 597. Compared 87079 event pairs, 850 based on Foata normal form. 164/12172 useless extension candidates. Maximal degree in co-relation 53839. Up to 3838 conditions per place. [2023-11-06 22:04:17,501 INFO L140 encePairwiseOnDemand]: 235/242 looper letters, 179 selfloop transitions, 6 changer transitions 40/243 dead transitions. [2023-11-06 22:04:17,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 243 transitions, 2916 flow [2023-11-06 22:04:17,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:04:17,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:04:17,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 755 transitions. [2023-11-06 22:04:17,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5199724517906336 [2023-11-06 22:04:17,504 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 755 transitions. [2023-11-06 22:04:17,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 755 transitions. [2023-11-06 22:04:17,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:04:17,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 755 transitions. [2023-11-06 22:04:17,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 125.83333333333333) internal successors, (755), 6 states have internal predecessors, (755), 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) [2023-11-06 22:04:17,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 242.0) internal successors, (1694), 7 states have internal predecessors, (1694), 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) [2023-11-06 22:04:17,510 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 242.0) internal successors, (1694), 7 states have internal predecessors, (1694), 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) [2023-11-06 22:04:17,511 INFO L175 Difference]: Start difference. First operand has 76 places, 83 transitions, 934 flow. Second operand 6 states and 755 transitions. [2023-11-06 22:04:17,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 243 transitions, 2916 flow [2023-11-06 22:04:18,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 243 transitions, 2606 flow, removed 119 selfloop flow, removed 3 redundant places. [2023-11-06 22:04:18,364 INFO L231 Difference]: Finished difference. Result has 81 places, 87 transitions, 913 flow [2023-11-06 22:04:18,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=858, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=913, PETRI_PLACES=81, PETRI_TRANSITIONS=87} [2023-11-06 22:04:18,365 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 39 predicate places. [2023-11-06 22:04:18,365 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 87 transitions, 913 flow [2023-11-06 22:04:18,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 114.0) internal successors, (798), 7 states have internal predecessors, (798), 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) [2023-11-06 22:04:18,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:04:18,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:04:18,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:04:18,366 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:04:18,367 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:18,367 INFO L85 PathProgramCache]: Analyzing trace with hash -607005858, now seen corresponding path program 2 times [2023-11-06 22:04:18,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:04:18,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880589556] [2023-11-06 22:04:18,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:18,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:04:18,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:18,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:04:18,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:04:18,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880589556] [2023-11-06 22:04:18,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880589556] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:04:18,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:04:18,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:04:18,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046416309] [2023-11-06 22:04:18,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:04:18,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:04:18,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:04:18,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:04:18,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:04:18,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 242 [2023-11-06 22:04:18,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 87 transitions, 913 flow. Second operand has 7 states, 7 states have (on average 112.0) internal successors, (784), 7 states have internal predecessors, (784), 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) [2023-11-06 22:04:18,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:04:18,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 242 [2023-11-06 22:04:18,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:04:20,353 INFO L124 PetriNetUnfolderBase]: 6689/10957 cut-off events. [2023-11-06 22:04:20,353 INFO L125 PetriNetUnfolderBase]: For 40898/41338 co-relation queries the response was YES. [2023-11-06 22:04:20,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45235 conditions, 10957 events. 6689/10957 cut-off events. For 40898/41338 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 78297 event pairs, 871 based on Foata normal form. 330/11169 useless extension candidates. Maximal degree in co-relation 45194. Up to 3456 conditions per place. [2023-11-06 22:04:20,418 INFO L140 encePairwiseOnDemand]: 235/242 looper letters, 92 selfloop transitions, 18 changer transitions 94/218 dead transitions. [2023-11-06 22:04:20,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 218 transitions, 2573 flow [2023-11-06 22:04:20,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:04:20,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-06 22:04:20,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1086 transitions. [2023-11-06 22:04:20,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4986225895316804 [2023-11-06 22:04:20,423 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1086 transitions. [2023-11-06 22:04:20,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1086 transitions. [2023-11-06 22:04:20,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:04:20,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1086 transitions. [2023-11-06 22:04:20,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 120.66666666666667) internal successors, (1086), 9 states have internal predecessors, (1086), 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) [2023-11-06 22:04:20,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 242.0) internal successors, (2420), 10 states have internal predecessors, (2420), 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) [2023-11-06 22:04:20,433 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 242.0) internal successors, (2420), 10 states have internal predecessors, (2420), 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) [2023-11-06 22:04:20,433 INFO L175 Difference]: Start difference. First operand has 81 places, 87 transitions, 913 flow. Second operand 9 states and 1086 transitions. [2023-11-06 22:04:20,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 218 transitions, 2573 flow [2023-11-06 22:04:21,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 218 transitions, 2541 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-11-06 22:04:21,128 INFO L231 Difference]: Finished difference. Result has 90 places, 70 transitions, 729 flow [2023-11-06 22:04:21,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=886, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=729, PETRI_PLACES=90, PETRI_TRANSITIONS=70} [2023-11-06 22:04:21,129 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 48 predicate places. [2023-11-06 22:04:21,129 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 70 transitions, 729 flow [2023-11-06 22:04:21,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 112.0) internal successors, (784), 7 states have internal predecessors, (784), 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) [2023-11-06 22:04:21,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:04:21,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:04:21,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:04:21,130 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:04:21,130 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:21,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1540864007, now seen corresponding path program 1 times [2023-11-06 22:04:21,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:04:21,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407427161] [2023-11-06 22:04:21,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:21,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:04:21,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:04:21,232 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:04:21,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:04:21,360 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:04:21,360 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:04:21,361 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2023-11-06 22:04:21,363 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-11-06 22:04:21,363 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2023-11-06 22:04:21,364 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2023-11-06 22:04:21,364 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2023-11-06 22:04:21,364 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2023-11-06 22:04:21,365 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-11-06 22:04:21,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 22:04:21,365 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:04:21,373 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 22:04:21,373 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 22:04:21,500 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:04:21 BasicIcfg [2023-11-06 22:04:21,501 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 22:04:21,501 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:04:21,501 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:04:21,502 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:04:21,502 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:03:44" (3/4) ... [2023-11-06 22:04:21,503 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-06 22:04:21,632 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b4bd4e-e083-4b80-a83a-f80ef3ac4bcb/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 22:04:21,632 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:04:21,633 INFO L158 Benchmark]: Toolchain (without parser) took 39019.12ms. Allocated memory was 136.3MB in the beginning and 3.1GB in the end (delta: 2.9GB). Free memory was 97.7MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 1.9GB. Max. memory is 16.1GB. [2023-11-06 22:04:21,633 INFO L158 Benchmark]: CDTParser took 0.71ms. Allocated memory is still 136.3MB. Free memory is still 108.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:04:21,633 INFO L158 Benchmark]: CACSL2BoogieTranslator took 709.81ms. Allocated memory is still 136.3MB. Free memory was 97.7MB in the beginning and 73.3MB in the end (delta: 24.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-06 22:04:21,634 INFO L158 Benchmark]: Boogie Procedure Inliner took 108.19ms. Allocated memory is still 136.3MB. Free memory was 73.3MB in the beginning and 71.1MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:04:21,634 INFO L158 Benchmark]: Boogie Preprocessor took 76.63ms. Allocated memory is still 136.3MB. Free memory was 70.8MB in the beginning and 69.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:04:21,635 INFO L158 Benchmark]: RCFGBuilder took 927.18ms. Allocated memory was 136.3MB in the beginning and 176.2MB in the end (delta: 39.8MB). Free memory was 69.0MB in the beginning and 122.5MB in the end (delta: -53.5MB). Peak memory consumption was 28.2MB. Max. memory is 16.1GB. [2023-11-06 22:04:21,635 INFO L158 Benchmark]: TraceAbstraction took 37055.83ms. Allocated memory was 176.2MB in the beginning and 3.1GB in the end (delta: 2.9GB). Free memory was 122.3MB in the beginning and 1.2GB in the end (delta: -1.0GB). Peak memory consumption was 1.8GB. Max. memory is 16.1GB. [2023-11-06 22:04:21,636 INFO L158 Benchmark]: Witness Printer took 130.72ms. Allocated memory is still 3.1GB. Free memory was 1.2GB in the beginning and 1.2GB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-06 22:04:21,641 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.71ms. Allocated memory is still 136.3MB. Free memory is still 108.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 709.81ms. Allocated memory is still 136.3MB. Free memory was 97.7MB in the beginning and 73.3MB in the end (delta: 24.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 108.19ms. Allocated memory is still 136.3MB. Free memory was 73.3MB in the beginning and 71.1MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 76.63ms. Allocated memory is still 136.3MB. Free memory was 70.8MB in the beginning and 69.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 927.18ms. Allocated memory was 136.3MB in the beginning and 176.2MB in the end (delta: 39.8MB). Free memory was 69.0MB in the beginning and 122.5MB in the end (delta: -53.5MB). Peak memory consumption was 28.2MB. Max. memory is 16.1GB. * TraceAbstraction took 37055.83ms. Allocated memory was 176.2MB in the beginning and 3.1GB in the end (delta: 2.9GB). Free memory was 122.3MB in the beginning and 1.2GB in the end (delta: -1.0GB). Peak memory consumption was 1.8GB. Max. memory is 16.1GB. * Witness Printer took 130.72ms. Allocated memory is still 3.1GB. Free memory was 1.2GB in the beginning and 1.2GB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.1s, 138 PlacesBefore, 42 PlacesAfterwards, 127 TransitionsBefore, 30 TransitionsAfterwards, 3290 CoEnabledTransitionPairs, 7 FixpointIterations, 40 TrivialSequentialCompositions, 60 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 1 ChoiceCompositions, 111 TotalNumberOfCompositions, 8888 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3574, independent: 3341, independent conditional: 0, independent unconditional: 3341, dependent: 233, dependent conditional: 0, dependent unconditional: 233, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1752, independent: 1696, independent conditional: 0, independent unconditional: 1696, dependent: 56, dependent conditional: 0, dependent unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3574, independent: 1645, independent conditional: 0, independent unconditional: 1645, dependent: 177, dependent conditional: 0, dependent unconditional: 177, unknown: 1752, unknown conditional: 0, unknown unconditional: 1752] , Statistics on independence cache: Total cache size (in pairs): 157, Positive cache size: 133, Positive conditional cache size: 0, Positive unconditional cache size: 133, Negative cache size: 24, Negative conditional cache size: 0, Negative unconditional cache size: 24, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L710] 0 int __unbuffered_cnt = 0; [L712] 0 int __unbuffered_p1_EAX = 0; [L714] 0 int __unbuffered_p3_EAX = 0; [L716] 0 int a = 0; [L717] 0 _Bool a$flush_delayed; [L718] 0 int a$mem_tmp; [L719] 0 _Bool a$r_buff0_thd0; [L720] 0 _Bool a$r_buff0_thd1; [L721] 0 _Bool a$r_buff0_thd2; [L722] 0 _Bool a$r_buff0_thd3; [L723] 0 _Bool a$r_buff0_thd4; [L724] 0 _Bool a$r_buff1_thd0; [L725] 0 _Bool a$r_buff1_thd1; [L726] 0 _Bool a$r_buff1_thd2; [L727] 0 _Bool a$r_buff1_thd3; [L728] 0 _Bool a$r_buff1_thd4; [L729] 0 _Bool a$read_delayed; [L730] 0 int *a$read_delayed_var; [L731] 0 int a$w_buff0; [L732] 0 _Bool a$w_buff0_used; [L733] 0 int a$w_buff1; [L734] 0 _Bool a$w_buff1_used; [L735] 0 _Bool main$tmp_guard0; [L736] 0 _Bool main$tmp_guard1; [L738] 0 int x = 0; [L740] 0 int y = 0; [L742] 0 int z = 0; [L743] 0 _Bool weak$$choice0; [L744] 0 _Bool weak$$choice2; [L859] 0 pthread_t t1457; [L860] FCALL, FORK 0 pthread_create(&t1457, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=0, a$r_buff0_thd2=0, a$r_buff0_thd3=0, a$r_buff0_thd4=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$r_buff1_thd3=0, a$r_buff1_thd4=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=0, a$w_buff0_used=0, a$w_buff1=0, a$w_buff1_used=0, a=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1457, ((void *)0), P0, ((void *)0))=-2, t1457={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0] [L861] 0 pthread_t t1458; [L748] 1 a$w_buff1 = a$w_buff0 [L749] 1 a$w_buff0 = 1 [L750] 1 a$w_buff1_used = a$w_buff0_used [L751] 1 a$w_buff0_used = (_Bool)1 [L752] CALL 1 __VERIFIER_assert(!(a$w_buff1_used && a$w_buff0_used)) [L18] COND FALSE 1 !(!expression) [L752] RET 1 __VERIFIER_assert(!(a$w_buff1_used && a$w_buff0_used)) [L753] 1 a$r_buff1_thd0 = a$r_buff0_thd0 [L754] 1 a$r_buff1_thd1 = a$r_buff0_thd1 [L755] 1 a$r_buff1_thd2 = a$r_buff0_thd2 [L756] 1 a$r_buff1_thd3 = a$r_buff0_thd3 [L757] 1 a$r_buff1_thd4 = a$r_buff0_thd4 [L758] 1 a$r_buff0_thd1 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=1, a$r_buff0_thd2=0, a$r_buff0_thd3=0, a$r_buff0_thd4=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$r_buff1_thd3=0, a$r_buff1_thd4=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=1, a$w_buff0_used=1, a$w_buff1=0, a$w_buff1_used=0, a=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0] [L862] FCALL, FORK 0 pthread_create(&t1458, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=1, a$r_buff0_thd2=0, a$r_buff0_thd3=0, a$r_buff0_thd4=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$r_buff1_thd3=0, a$r_buff1_thd4=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=1, a$w_buff0_used=1, a$w_buff1=0, a$w_buff1_used=0, a=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1458, ((void *)0), P1, ((void *)0))=-1, t1457={5:0}, t1458={6:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0] [L863] 0 pthread_t t1459; [L761] 1 x = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=1, a$r_buff0_thd2=0, a$r_buff0_thd3=0, a$r_buff0_thd4=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$r_buff1_thd3=0, a$r_buff1_thd4=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=1, a$w_buff0_used=1, a$w_buff1=0, a$w_buff1_used=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=0, z=0] [L778] 2 x = 2 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=1, a$r_buff0_thd2=0, a$r_buff0_thd3=0, a$r_buff0_thd4=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$r_buff1_thd3=0, a$r_buff1_thd4=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=1, a$w_buff0_used=1, a$w_buff1=0, a$w_buff1_used=0, a=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=0, z=0] [L781] 2 __unbuffered_p1_EAX = y VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=1, a$r_buff0_thd2=0, a$r_buff0_thd3=0, a$r_buff0_thd4=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$r_buff1_thd3=0, a$r_buff1_thd4=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=1, a$w_buff0_used=1, a$w_buff1=0, a$w_buff1_used=0, a=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=0, z=0] [L784] 2 a = a$w_buff0_used && a$r_buff0_thd2 ? a$w_buff0 : (a$w_buff1_used && a$r_buff1_thd2 ? a$w_buff1 : a) [L785] 2 a$w_buff0_used = a$w_buff0_used && a$r_buff0_thd2 ? (_Bool)0 : a$w_buff0_used [L786] 2 a$w_buff1_used = a$w_buff0_used && a$r_buff0_thd2 || a$w_buff1_used && a$r_buff1_thd2 ? (_Bool)0 : a$w_buff1_used [L787] 2 a$r_buff0_thd2 = a$w_buff0_used && a$r_buff0_thd2 ? (_Bool)0 : a$r_buff0_thd2 [L788] 2 a$r_buff1_thd2 = a$w_buff0_used && a$r_buff0_thd2 || a$w_buff1_used && a$r_buff1_thd2 ? (_Bool)0 : a$r_buff1_thd2 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=1, a$r_buff0_thd2=0, a$r_buff0_thd3=0, a$r_buff0_thd4=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$r_buff1_thd3=0, a$r_buff1_thd4=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=1, a$w_buff0_used=1, a$w_buff1=0, a$w_buff1_used=0, a=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=0, z=0] [L864] FCALL, FORK 0 pthread_create(&t1459, ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=1, a$r_buff0_thd2=0, a$r_buff0_thd3=0, a$r_buff0_thd4=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$r_buff1_thd3=0, a$r_buff1_thd4=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=1, a$w_buff0_used=1, a$w_buff1=0, a$w_buff1_used=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1459, ((void *)0), P2, ((void *)0))=0, t1457={5:0}, t1458={6:0}, t1459={7:0}, weak$$choice0=0, weak$$choice2=0, x=2, y=0, z=0] [L865] 0 pthread_t t1460; [L798] 3 y = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=1, a$r_buff0_thd2=0, a$r_buff0_thd3=0, a$r_buff0_thd4=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$r_buff1_thd3=0, a$r_buff1_thd4=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=1, a$w_buff0_used=1, a$w_buff1=0, a$w_buff1_used=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=1, z=0] [L866] FCALL, FORK 0 pthread_create(&t1460, ((void *)0), P3, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=1, a$r_buff0_thd2=0, a$r_buff0_thd3=0, a$r_buff0_thd4=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$r_buff1_thd3=0, a$r_buff1_thd4=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=1, a$w_buff0_used=1, a$w_buff1=0, a$w_buff1_used=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1460, ((void *)0), P3, ((void *)0))=1, t1457={5:0}, t1458={6:0}, t1459={7:0}, t1460={3:0}, weak$$choice0=0, weak$$choice2=0, x=2, y=1, z=0] [L801] 3 z = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=1, a$r_buff0_thd2=0, a$r_buff0_thd3=0, a$r_buff0_thd4=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$r_buff1_thd3=0, a$r_buff1_thd4=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=1, a$w_buff0_used=1, a$w_buff1=0, a$w_buff1_used=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=1, z=1] [L818] 4 z = 2 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=1, a$r_buff0_thd2=0, a$r_buff0_thd3=0, a$r_buff0_thd4=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$r_buff1_thd3=0, a$r_buff1_thd4=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=1, a$w_buff0_used=1, a$w_buff1=0, a$w_buff1_used=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=1, z=2] [L821] 4 weak$$choice0 = __VERIFIER_nondet_bool() [L822] 4 weak$$choice2 = __VERIFIER_nondet_bool() [L823] 4 a$flush_delayed = weak$$choice2 [L824] 4 a$mem_tmp = a [L825] 4 a = !a$w_buff0_used || !a$r_buff0_thd4 && !a$w_buff1_used || !a$r_buff0_thd4 && !a$r_buff1_thd4 ? a : (a$w_buff0_used && a$r_buff0_thd4 ? a$w_buff0 : a$w_buff1) [L826] 4 a$w_buff0 = weak$$choice2 ? a$w_buff0 : (!a$w_buff0_used || !a$r_buff0_thd4 && !a$w_buff1_used || !a$r_buff0_thd4 && !a$r_buff1_thd4 ? a$w_buff0 : (a$w_buff0_used && a$r_buff0_thd4 ? a$w_buff0 : a$w_buff0)) [L827] 4 a$w_buff1 = weak$$choice2 ? a$w_buff1 : (!a$w_buff0_used || !a$r_buff0_thd4 && !a$w_buff1_used || !a$r_buff0_thd4 && !a$r_buff1_thd4 ? a$w_buff1 : (a$w_buff0_used && a$r_buff0_thd4 ? a$w_buff1 : a$w_buff1)) [L828] 4 a$w_buff0_used = weak$$choice2 ? a$w_buff0_used : (!a$w_buff0_used || !a$r_buff0_thd4 && !a$w_buff1_used || !a$r_buff0_thd4 && !a$r_buff1_thd4 ? a$w_buff0_used : (a$w_buff0_used && a$r_buff0_thd4 ? (_Bool)0 : a$w_buff0_used)) [L829] 4 a$w_buff1_used = weak$$choice2 ? a$w_buff1_used : (!a$w_buff0_used || !a$r_buff0_thd4 && !a$w_buff1_used || !a$r_buff0_thd4 && !a$r_buff1_thd4 ? a$w_buff1_used : (a$w_buff0_used && a$r_buff0_thd4 ? (_Bool)0 : (_Bool)0)) [L830] 4 a$r_buff0_thd4 = weak$$choice2 ? a$r_buff0_thd4 : (!a$w_buff0_used || !a$r_buff0_thd4 && !a$w_buff1_used || !a$r_buff0_thd4 && !a$r_buff1_thd4 ? a$r_buff0_thd4 : (a$w_buff0_used && a$r_buff0_thd4 ? (_Bool)0 : a$r_buff0_thd4)) [L831] 4 a$r_buff1_thd4 = weak$$choice2 ? a$r_buff1_thd4 : (!a$w_buff0_used || !a$r_buff0_thd4 && !a$w_buff1_used || !a$r_buff0_thd4 && !a$r_buff1_thd4 ? a$r_buff1_thd4 : (a$w_buff0_used && a$r_buff0_thd4 ? (_Bool)0 : (_Bool)0)) [L832] 4 __unbuffered_p3_EAX = a [L833] 4 a = a$flush_delayed ? a$mem_tmp : a [L834] 4 a$flush_delayed = (_Bool)0 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=1, a$r_buff0_thd2=0, a$r_buff0_thd3=0, a$r_buff0_thd4=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$r_buff1_thd3=0, a$r_buff1_thd4=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=1, a$w_buff0_used=1, a$w_buff1=0, a$w_buff1_used=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=1, x=2, y=1, z=2] [L764] 1 a = a$w_buff0_used && a$r_buff0_thd1 ? a$w_buff0 : (a$w_buff1_used && a$r_buff1_thd1 ? a$w_buff1 : a) [L765] 1 a$w_buff0_used = a$w_buff0_used && a$r_buff0_thd1 ? (_Bool)0 : a$w_buff0_used [L766] 1 a$w_buff1_used = a$w_buff0_used && a$r_buff0_thd1 || a$w_buff1_used && a$r_buff1_thd1 ? (_Bool)0 : a$w_buff1_used [L767] 1 a$r_buff0_thd1 = a$w_buff0_used && a$r_buff0_thd1 ? (_Bool)0 : a$r_buff0_thd1 [L768] 1 a$r_buff1_thd1 = a$w_buff0_used && a$r_buff0_thd1 || a$w_buff1_used && a$r_buff1_thd1 ? (_Bool)0 : a$r_buff1_thd1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=1, a$r_buff0_thd2=0, a$r_buff0_thd3=0, a$r_buff0_thd4=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$r_buff1_thd3=0, a$r_buff1_thd4=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=1, a$w_buff0_used=0, a$w_buff1=0, a$w_buff1_used=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=1, x=2, y=1, z=2] [L804] 3 a = a$w_buff0_used && a$r_buff0_thd3 ? a$w_buff0 : (a$w_buff1_used && a$r_buff1_thd3 ? a$w_buff1 : a) [L805] 3 a$w_buff0_used = a$w_buff0_used && a$r_buff0_thd3 ? (_Bool)0 : a$w_buff0_used [L806] 3 a$w_buff1_used = a$w_buff0_used && a$r_buff0_thd3 || a$w_buff1_used && a$r_buff1_thd3 ? (_Bool)0 : a$w_buff1_used [L807] 3 a$r_buff0_thd3 = a$w_buff0_used && a$r_buff0_thd3 ? (_Bool)0 : a$r_buff0_thd3 [L808] 3 a$r_buff1_thd3 = a$w_buff0_used && a$r_buff0_thd3 || a$w_buff1_used && a$r_buff1_thd3 ? (_Bool)0 : a$r_buff1_thd3 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=1, a$r_buff0_thd2=0, a$r_buff0_thd3=0, a$r_buff0_thd4=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$r_buff1_thd3=0, a$r_buff1_thd4=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=1, a$w_buff0_used=0, a$w_buff1=0, a$w_buff1_used=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=1, x=2, y=1, z=2] [L837] 4 a = a$w_buff0_used && a$r_buff0_thd4 ? a$w_buff0 : (a$w_buff1_used && a$r_buff1_thd4 ? a$w_buff1 : a) [L838] 4 a$w_buff0_used = a$w_buff0_used && a$r_buff0_thd4 ? (_Bool)0 : a$w_buff0_used [L839] 4 a$w_buff1_used = a$w_buff0_used && a$r_buff0_thd4 || a$w_buff1_used && a$r_buff1_thd4 ? (_Bool)0 : a$w_buff1_used [L840] 4 a$r_buff0_thd4 = a$w_buff0_used && a$r_buff0_thd4 ? (_Bool)0 : a$r_buff0_thd4 [L841] 4 a$r_buff1_thd4 = a$w_buff0_used && a$r_buff0_thd4 || a$w_buff1_used && a$r_buff1_thd4 ? (_Bool)0 : a$r_buff1_thd4 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=1, a$r_buff0_thd2=0, a$r_buff0_thd3=0, a$r_buff0_thd4=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$r_buff1_thd3=0, a$r_buff1_thd4=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=1, a$w_buff0_used=0, a$w_buff1=0, a$w_buff1_used=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=1, x=2, y=1, z=2] [L771] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L773] 1 return 0; [L791] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L793] 2 return 0; [L811] 3 __unbuffered_cnt = __unbuffered_cnt + 1 [L813] 3 return 0; [L844] 4 __unbuffered_cnt = __unbuffered_cnt + 1 [L846] 4 return 0; [L868] 0 main$tmp_guard0 = __unbuffered_cnt == 4 [L870] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L870] RET 0 assume_abort_if_not(main$tmp_guard0) [L872] 0 a = a$w_buff0_used && a$r_buff0_thd0 ? a$w_buff0 : (a$w_buff1_used && a$r_buff1_thd0 ? a$w_buff1 : a) [L873] 0 a$w_buff0_used = a$w_buff0_used && a$r_buff0_thd0 ? (_Bool)0 : a$w_buff0_used [L874] 0 a$w_buff1_used = a$w_buff0_used && a$r_buff0_thd0 || a$w_buff1_used && a$r_buff1_thd0 ? (_Bool)0 : a$w_buff1_used [L875] 0 a$r_buff0_thd0 = a$w_buff0_used && a$r_buff0_thd0 ? (_Bool)0 : a$r_buff0_thd0 [L876] 0 a$r_buff1_thd0 = a$w_buff0_used && a$r_buff0_thd0 || a$w_buff1_used && a$r_buff1_thd0 ? (_Bool)0 : a$r_buff1_thd0 VAL [\result={0:0}, \result={0:0}, \result={0:0}, __unbuffered_cnt=4, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=1, a$r_buff0_thd2=0, a$r_buff0_thd3=0, a$r_buff0_thd4=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$r_buff1_thd3=0, a$r_buff1_thd4=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=1, a$w_buff0_used=0, a$w_buff1=0, a$w_buff1_used=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t1457={5:0}, t1458={6:0}, t1459={7:0}, t1460={3:0}, weak$$choice2=1, x=2, y=1, z=2] [L879] 0 main$tmp_guard1 = !(x == 2 && z == 2 && __unbuffered_p1_EAX == 0 && __unbuffered_p3_EAX == 0) [L881] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\old(expression)=0, \result={0:0}, \result={0:0}, \result={0:0}, __unbuffered_cnt=4, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=1, a$r_buff0_thd2=0, a$r_buff0_thd3=0, a$r_buff0_thd4=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$r_buff1_thd3=0, a$r_buff1_thd4=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=1, a$w_buff0_used=0, a$w_buff1=0, a$w_buff1_used=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, expression=0, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice2=1, x=2, y=1, z=2] - UnprovableResult [Line: 18]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 866]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 862]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 864]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 860]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 167 locations, 7 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: 36.8s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 27.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 664 SdHoareTripleChecker+Valid, 2.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 521 mSDsluCounter, 196 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 134 mSDsCounter, 90 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1522 IncrementalHoareTripleChecker+Invalid, 1612 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 90 mSolverCounterUnsat, 62 mSDtfsCounter, 1522 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=934occurred in iteration=9, InterpolantAutomatonStates: 56, 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: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 196 NumberOfCodeBlocks, 196 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 158 ConstructedInterpolants, 0 QuantifiedInterpolants, 935 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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 RESULT: Ultimate proved your program to be incorrect! [2023-11-06 22:04:21,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b4bd4e-e083-4b80-a83a-f80ef3ac4bcb/bin/uautomizer-verify-WvqO1wxjHP/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE