./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix029_power.oepc_pso.oepc_rmo.oepc_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5009c12c-bda6-41f8-9496-ba30ca6370dc/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5009c12c-bda6-41f8-9496-ba30ca6370dc/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5009c12c-bda6-41f8-9496-ba30ca6370dc/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5009c12c-bda6-41f8-9496-ba30ca6370dc/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix029_power.oepc_pso.oepc_rmo.oepc_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5009c12c-bda6-41f8-9496-ba30ca6370dc/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5009c12c-bda6-41f8-9496-ba30ca6370dc/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bf24bf121ebc3ec235b4f1c2077ea9383a107f5a378f2adee68bd8bbb156b315 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 12:05:44,476 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 12:05:44,553 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5009c12c-bda6-41f8-9496-ba30ca6370dc/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 12:05:44,559 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 12:05:44,560 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 12:05:44,600 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 12:05:44,601 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 12:05:44,602 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 12:05:44,603 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 12:05:44,603 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 12:05:44,604 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 12:05:44,605 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 12:05:44,606 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 12:05:44,606 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 12:05:44,607 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 12:05:44,607 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 12:05:44,608 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 12:05:44,609 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 12:05:44,609 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 12:05:44,609 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 12:05:44,610 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 12:05:44,611 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 12:05:44,611 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 12:05:44,611 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 12:05:44,612 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 12:05:44,612 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 12:05:44,613 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 12:05:44,613 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 12:05:44,614 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 12:05:44,614 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 12:05:44,614 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 12:05:44,615 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:05:44,615 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 12:05:44,616 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 12:05:44,616 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 12:05:44,623 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 12:05:44,624 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 12:05:44,624 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 12:05:44,624 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 12:05:44,624 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 12:05:44,625 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 12:05:44,625 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 12:05:44,625 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_5009c12c-bda6-41f8-9496-ba30ca6370dc/bin/uautomizer-verify-VRDe98Ueme/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5009c12c-bda6-41f8-9496-ba30ca6370dc/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf24bf121ebc3ec235b4f1c2077ea9383a107f5a378f2adee68bd8bbb156b315 [2023-11-26 12:05:44,939 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 12:05:44,960 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 12:05:44,963 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 12:05:44,964 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 12:05:44,965 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 12:05:44,966 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5009c12c-bda6-41f8-9496-ba30ca6370dc/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/pthread-wmm/mix029_power.oepc_pso.oepc_rmo.oepc_tso.oepc_tso.opt.i [2023-11-26 12:05:48,108 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 12:05:48,504 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 12:05:48,505 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5009c12c-bda6-41f8-9496-ba30ca6370dc/sv-benchmarks/c/pthread-wmm/mix029_power.oepc_pso.oepc_rmo.oepc_tso.oepc_tso.opt.i [2023-11-26 12:05:48,529 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5009c12c-bda6-41f8-9496-ba30ca6370dc/bin/uautomizer-verify-VRDe98Ueme/data/23c2158f7/d79014f45d6944688a965a7cb7a236ea/FLAG340f4c244 [2023-11-26 12:05:48,549 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5009c12c-bda6-41f8-9496-ba30ca6370dc/bin/uautomizer-verify-VRDe98Ueme/data/23c2158f7/d79014f45d6944688a965a7cb7a236ea [2023-11-26 12:05:48,552 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 12:05:48,553 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 12:05:48,559 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 12:05:48,559 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 12:05:48,565 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 12:05:48,568 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:05:48" (1/1) ... [2023-11-26 12:05:48,570 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@291bb8ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:48, skipping insertion in model container [2023-11-26 12:05:48,570 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:05:48" (1/1) ... [2023-11-26 12:05:48,639 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:05:48,836 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_5009c12c-bda6-41f8-9496-ba30ca6370dc/sv-benchmarks/c/pthread-wmm/mix029_power.oepc_pso.oepc_rmo.oepc_tso.oepc_tso.opt.i[986,999] [2023-11-26 12:05:49,194 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:05:49,207 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 12:05:49,221 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_5009c12c-bda6-41f8-9496-ba30ca6370dc/sv-benchmarks/c/pthread-wmm/mix029_power.oepc_pso.oepc_rmo.oepc_tso.oepc_tso.opt.i[986,999] [2023-11-26 12:05:49,289 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:05:49,324 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:05:49,325 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:05:49,333 INFO L206 MainTranslator]: Completed translation [2023-11-26 12:05:49,334 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:49 WrapperNode [2023-11-26 12:05:49,334 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 12:05:49,335 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 12:05:49,336 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 12:05:49,336 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 12:05:49,344 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:49" (1/1) ... [2023-11-26 12:05:49,372 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:49" (1/1) ... [2023-11-26 12:05:49,484 INFO L138 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 143 [2023-11-26 12:05:49,489 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 12:05:49,491 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 12:05:49,491 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 12:05:49,491 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 12:05:49,503 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:49" (1/1) ... [2023-11-26 12:05:49,504 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:49" (1/1) ... [2023-11-26 12:05:49,508 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:49" (1/1) ... [2023-11-26 12:05:49,529 INFO L175 MemorySlicer]: Split 6 memory accesses to 5 slices as follows [2, 1, 1, 1, 1]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2023-11-26 12:05:49,529 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:49" (1/1) ... [2023-11-26 12:05:49,530 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:49" (1/1) ... [2023-11-26 12:05:49,541 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:49" (1/1) ... [2023-11-26 12:05:49,552 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:49" (1/1) ... [2023-11-26 12:05:49,556 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:49" (1/1) ... [2023-11-26 12:05:49,558 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:49" (1/1) ... [2023-11-26 12:05:49,563 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 12:05:49,570 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 12:05:49,572 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 12:05:49,572 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 12:05:49,573 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:49" (1/1) ... [2023-11-26 12:05:49,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:05:49,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5009c12c-bda6-41f8-9496-ba30ca6370dc/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:05:49,617 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5009c12c-bda6-41f8-9496-ba30ca6370dc/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 12:05:49,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5009c12c-bda6-41f8-9496-ba30ca6370dc/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 12:05:49,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 12:05:49,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 12:05:49,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 12:05:49,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 12:05:49,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 12:05:49,668 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-26 12:05:49,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 12:05:49,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 12:05:49,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 12:05:49,669 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-26 12:05:49,669 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-26 12:05:49,670 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-26 12:05:49,670 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-26 12:05:49,670 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-26 12:05:49,671 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-26 12:05:49,671 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-26 12:05:49,671 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-26 12:05:49,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 12:05:49,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 12:05:49,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 12:05:49,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 12:05:49,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 12:05:49,673 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-26 12:05:49,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 12:05:49,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 12:05:49,676 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 12:05:49,925 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 12:05:49,931 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 12:05:50,375 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 12:05:50,632 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 12:05:50,632 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-26 12:05:50,633 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:05:50 BoogieIcfgContainer [2023-11-26 12:05:50,633 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 12:05:50,639 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 12:05:50,640 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 12:05:50,644 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 12:05:50,644 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:05:48" (1/3) ... [2023-11-26 12:05:50,645 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5790275d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:05:50, skipping insertion in model container [2023-11-26 12:05:50,646 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:49" (2/3) ... [2023-11-26 12:05:50,646 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5790275d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:05:50, skipping insertion in model container [2023-11-26 12:05:50,647 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:05:50" (3/3) ... [2023-11-26 12:05:50,648 INFO L112 eAbstractionObserver]: Analyzing ICFG mix029_power.oepc_pso.oepc_rmo.oepc_tso.oepc_tso.opt.i [2023-11-26 12:05:50,659 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 12:05:50,671 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 12:05:50,671 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-26 12:05:50,671 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 12:05:50,749 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 12:05:50,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 49 transitions, 114 flow [2023-11-26 12:05:50,844 INFO L124 PetriNetUnfolderBase]: 1/45 cut-off events. [2023-11-26 12:05:50,844 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 12:05:50,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 45 events. 1/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 87 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 49. Up to 2 conditions per place. [2023-11-26 12:05:50,850 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 49 transitions, 114 flow [2023-11-26 12:05:50,858 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 45 transitions, 102 flow [2023-11-26 12:05:50,875 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:05:50,882 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@61723562, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:05:50,883 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-26 12:05:50,887 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 12:05:50,888 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-11-26 12:05:50,888 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 12:05:50,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:05:50,889 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-26 12:05:50,890 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-26 12:05:50,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:05:50,895 INFO L85 PathProgramCache]: Analyzing trace with hash 12269972, now seen corresponding path program 1 times [2023-11-26 12:05:50,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:05:50,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577558403] [2023-11-26 12:05:50,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:50,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:05:51,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:05:51,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:05:51,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:05:51,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577558403] [2023-11-26 12:05:51,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577558403] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:05:51,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:05:51,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 12:05:51,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661827263] [2023-11-26 12:05:51,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:05:51,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:05:51,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:05:51,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:05:51,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:05:51,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 49 [2023-11-26 12:05:51,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 45 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:51,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:05:51,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 49 [2023-11-26 12:05:51,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:05:52,646 INFO L124 PetriNetUnfolderBase]: 2495/4136 cut-off events. [2023-11-26 12:05:52,646 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2023-11-26 12:05:52,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7712 conditions, 4136 events. 2495/4136 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 28595 event pairs, 443 based on Foata normal form. 135/4200 useless extension candidates. Maximal degree in co-relation 7700. Up to 2779 conditions per place. [2023-11-26 12:05:52,689 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 37 selfloop transitions, 2 changer transitions 2/61 dead transitions. [2023-11-26 12:05:52,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 61 transitions, 225 flow [2023-11-26 12:05:52,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:05:52,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:05:52,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 116 transitions. [2023-11-26 12:05:52,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7891156462585034 [2023-11-26 12:05:52,703 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 116 transitions. [2023-11-26 12:05:52,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 116 transitions. [2023-11-26 12:05:52,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:05:52,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 116 transitions. [2023-11-26 12:05:52,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:52,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:52,714 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:52,715 INFO L175 Difference]: Start difference. First operand has 57 places, 45 transitions, 102 flow. Second operand 3 states and 116 transitions. [2023-11-26 12:05:52,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 61 transitions, 225 flow [2023-11-26 12:05:52,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 61 transitions, 218 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-26 12:05:52,723 INFO L231 Difference]: Finished difference. Result has 54 places, 42 transitions, 96 flow [2023-11-26 12:05:52,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=54, PETRI_TRANSITIONS=42} [2023-11-26 12:05:52,729 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -3 predicate places. [2023-11-26 12:05:52,729 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 42 transitions, 96 flow [2023-11-26 12:05:52,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:52,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:05:52,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:05:52,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 12:05:52,730 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)] === [2023-11-26 12:05:52,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:05:52,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1256845437, now seen corresponding path program 1 times [2023-11-26 12:05:52,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:05:52,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456882636] [2023-11-26 12:05:52,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:52,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:05:52,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:05:53,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:05:53,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:05:53,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456882636] [2023-11-26 12:05:53,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456882636] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:05:53,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:05:53,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 12:05:53,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977614048] [2023-11-26 12:05:53,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:05:53,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 12:05:53,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:05:53,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:05:53,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:05:53,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2023-11-26 12:05:53,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 96 flow. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:53,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:05:53,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2023-11-26 12:05:53,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:06:01,683 INFO L124 PetriNetUnfolderBase]: 36977/52329 cut-off events. [2023-11-26 12:06:01,683 INFO L125 PetriNetUnfolderBase]: For 2383/2383 co-relation queries the response was YES. [2023-11-26 12:06:01,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104650 conditions, 52329 events. 36977/52329 cut-off events. For 2383/2383 co-relation queries the response was YES. Maximal size of possible extension queue 2281. Compared 371864 event pairs, 8591 based on Foata normal form. 0/50996 useless extension candidates. Maximal degree in co-relation 104640. Up to 17928 conditions per place. [2023-11-26 12:06:02,050 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 49 selfloop transitions, 8 changer transitions 103/171 dead transitions. [2023-11-26 12:06:02,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 171 transitions, 694 flow [2023-11-26 12:06:02,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 12:06:02,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-26 12:06:02,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 297 transitions. [2023-11-26 12:06:02,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.673469387755102 [2023-11-26 12:06:02,056 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 297 transitions. [2023-11-26 12:06:02,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 297 transitions. [2023-11-26 12:06:02,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:06:02,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 297 transitions. [2023-11-26 12:06:02,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:02,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 49.0) internal successors, (490), 10 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:02,063 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 49.0) internal successors, (490), 10 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:02,064 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 96 flow. Second operand 9 states and 297 transitions. [2023-11-26 12:06:02,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 171 transitions, 694 flow [2023-11-26 12:06:02,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 171 transitions, 676 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:06:02,071 INFO L231 Difference]: Finished difference. Result has 67 places, 48 transitions, 202 flow [2023-11-26 12:06:02,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=202, PETRI_PLACES=67, PETRI_TRANSITIONS=48} [2023-11-26 12:06:02,072 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 10 predicate places. [2023-11-26 12:06:02,073 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 48 transitions, 202 flow [2023-11-26 12:06:02,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:02,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:06:02,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:06:02,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 12:06:02,074 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)] === [2023-11-26 12:06:02,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:02,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1788323934, now seen corresponding path program 1 times [2023-11-26 12:06:02,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:02,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430888211] [2023-11-26 12:06:02,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:02,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:02,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:02,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:06:02,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:02,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430888211] [2023-11-26 12:06:02,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430888211] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:02,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:02,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 12:06:02,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215731185] [2023-11-26 12:06:02,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:02,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 12:06:02,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:02,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:06:02,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:06:02,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 49 [2023-11-26 12:06:02,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 48 transitions, 202 flow. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:02,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:06:02,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 49 [2023-11-26 12:06:02,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:06:07,483 INFO L124 PetriNetUnfolderBase]: 22467/34963 cut-off events. [2023-11-26 12:06:07,483 INFO L125 PetriNetUnfolderBase]: For 38872/39872 co-relation queries the response was YES. [2023-11-26 12:06:07,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96000 conditions, 34963 events. 22467/34963 cut-off events. For 38872/39872 co-relation queries the response was YES. Maximal size of possible extension queue 1807. Compared 281936 event pairs, 6376 based on Foata normal form. 1017/35107 useless extension candidates. Maximal degree in co-relation 95982. Up to 22082 conditions per place. [2023-11-26 12:06:07,742 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 38 selfloop transitions, 5 changer transitions 51/113 dead transitions. [2023-11-26 12:06:07,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 113 transitions, 676 flow [2023-11-26 12:06:07,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 12:06:07,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-26 12:06:07,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 214 transitions. [2023-11-26 12:06:07,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6239067055393586 [2023-11-26 12:06:07,745 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 214 transitions. [2023-11-26 12:06:07,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 214 transitions. [2023-11-26 12:06:07,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:06:07,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 214 transitions. [2023-11-26 12:06:07,747 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 30.571428571428573) internal successors, (214), 7 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:07,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 49.0) internal successors, (392), 8 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:07,749 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 49.0) internal successors, (392), 8 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:07,749 INFO L175 Difference]: Start difference. First operand has 67 places, 48 transitions, 202 flow. Second operand 7 states and 214 transitions. [2023-11-26 12:06:07,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 113 transitions, 676 flow [2023-11-26 12:06:08,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 113 transitions, 598 flow, removed 19 selfloop flow, removed 4 redundant places. [2023-11-26 12:06:08,116 INFO L231 Difference]: Finished difference. Result has 67 places, 52 transitions, 245 flow [2023-11-26 12:06:08,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=245, PETRI_PLACES=67, PETRI_TRANSITIONS=52} [2023-11-26 12:06:08,117 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 10 predicate places. [2023-11-26 12:06:08,118 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 52 transitions, 245 flow [2023-11-26 12:06:08,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:08,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:06:08,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:06:08,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 12:06:08,119 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)] === [2023-11-26 12:06:08,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:08,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1965639966, now seen corresponding path program 1 times [2023-11-26 12:06:08,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:08,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57393000] [2023-11-26 12:06:08,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:08,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:08,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:08,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:06:08,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:08,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57393000] [2023-11-26 12:06:08,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57393000] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:08,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:08,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 12:06:08,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690109648] [2023-11-26 12:06:08,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:08,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:06:08,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:08,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:06:08,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:06:08,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2023-11-26 12:06:08,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 52 transitions, 245 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:08,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:06:08,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2023-11-26 12:06:08,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:06:13,961 INFO L124 PetriNetUnfolderBase]: 26629/38632 cut-off events. [2023-11-26 12:06:13,962 INFO L125 PetriNetUnfolderBase]: For 74023/74029 co-relation queries the response was YES. [2023-11-26 12:06:14,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116319 conditions, 38632 events. 26629/38632 cut-off events. For 74023/74029 co-relation queries the response was YES. Maximal size of possible extension queue 1704. Compared 273336 event pairs, 3326 based on Foata normal form. 920/39536 useless extension candidates. Maximal degree in co-relation 116298. Up to 16395 conditions per place. [2023-11-26 12:06:14,251 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 67 selfloop transitions, 14 changer transitions 84/176 dead transitions. [2023-11-26 12:06:14,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 176 transitions, 1097 flow [2023-11-26 12:06:14,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 12:06:14,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-26 12:06:14,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 310 transitions. [2023-11-26 12:06:14,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6326530612244898 [2023-11-26 12:06:14,255 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 310 transitions. [2023-11-26 12:06:14,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 310 transitions. [2023-11-26 12:06:14,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:06:14,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 310 transitions. [2023-11-26 12:06:14,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 31.0) internal successors, (310), 10 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:14,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 49.0) internal successors, (539), 11 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:14,259 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 49.0) internal successors, (539), 11 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:14,260 INFO L175 Difference]: Start difference. First operand has 67 places, 52 transitions, 245 flow. Second operand 10 states and 310 transitions. [2023-11-26 12:06:14,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 176 transitions, 1097 flow [2023-11-26 12:06:15,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 176 transitions, 1076 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-11-26 12:06:15,431 INFO L231 Difference]: Finished difference. Result has 77 places, 58 transitions, 344 flow [2023-11-26 12:06:15,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=344, PETRI_PLACES=77, PETRI_TRANSITIONS=58} [2023-11-26 12:06:15,432 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 20 predicate places. [2023-11-26 12:06:15,432 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 58 transitions, 344 flow [2023-11-26 12:06:15,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:15,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:06:15,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:06:15,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 12:06:15,433 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)] === [2023-11-26 12:06:15,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:15,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1450516863, now seen corresponding path program 1 times [2023-11-26 12:06:15,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:15,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866403123] [2023-11-26 12:06:15,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:15,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:15,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:15,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:06:15,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:15,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866403123] [2023-11-26 12:06:15,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866403123] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:15,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:15,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 12:06:15,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545572618] [2023-11-26 12:06:15,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:15,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:06:15,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:15,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:06:15,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:06:15,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2023-11-26 12:06:15,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 58 transitions, 344 flow. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:15,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:06:15,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2023-11-26 12:06:15,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:06:21,399 INFO L124 PetriNetUnfolderBase]: 24507/35728 cut-off events. [2023-11-26 12:06:21,399 INFO L125 PetriNetUnfolderBase]: For 127910/128022 co-relation queries the response was YES. [2023-11-26 12:06:21,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121513 conditions, 35728 events. 24507/35728 cut-off events. For 127910/128022 co-relation queries the response was YES. Maximal size of possible extension queue 1533. Compared 253942 event pairs, 4222 based on Foata normal form. 943/36576 useless extension candidates. Maximal degree in co-relation 121485. Up to 11661 conditions per place. [2023-11-26 12:06:21,811 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 72 selfloop transitions, 9 changer transitions 94/186 dead transitions. [2023-11-26 12:06:21,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 186 transitions, 1421 flow [2023-11-26 12:06:21,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 12:06:21,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-26 12:06:21,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 300 transitions. [2023-11-26 12:06:21,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6122448979591837 [2023-11-26 12:06:21,817 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 300 transitions. [2023-11-26 12:06:21,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 300 transitions. [2023-11-26 12:06:21,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:06:21,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 300 transitions. [2023-11-26 12:06:21,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.0) internal successors, (300), 10 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:21,825 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 49.0) internal successors, (539), 11 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:21,825 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 49.0) internal successors, (539), 11 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:21,826 INFO L175 Difference]: Start difference. First operand has 77 places, 58 transitions, 344 flow. Second operand 10 states and 300 transitions. [2023-11-26 12:06:21,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 186 transitions, 1421 flow [2023-11-26 12:06:24,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 186 transitions, 1339 flow, removed 41 selfloop flow, removed 4 redundant places. [2023-11-26 12:06:24,806 INFO L231 Difference]: Finished difference. Result has 85 places, 63 transitions, 434 flow [2023-11-26 12:06:24,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=434, PETRI_PLACES=85, PETRI_TRANSITIONS=63} [2023-11-26 12:06:24,807 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 28 predicate places. [2023-11-26 12:06:24,807 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 63 transitions, 434 flow [2023-11-26 12:06:24,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:24,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:06:24,808 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] [2023-11-26 12:06:24,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 12:06:24,809 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)] === [2023-11-26 12:06:24,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:24,809 INFO L85 PathProgramCache]: Analyzing trace with hash 102920070, now seen corresponding path program 1 times [2023-11-26 12:06:24,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:24,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901118133] [2023-11-26 12:06:24,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:24,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:24,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:25,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:06:25,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:25,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901118133] [2023-11-26 12:06:25,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901118133] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:25,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:25,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:06:25,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000186636] [2023-11-26 12:06:25,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:25,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:06:25,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:25,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:06:25,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:06:25,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 49 [2023-11-26 12:06:25,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 63 transitions, 434 flow. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:25,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:06:25,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 49 [2023-11-26 12:06:25,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:06:31,338 INFO L124 PetriNetUnfolderBase]: 29067/44372 cut-off events. [2023-11-26 12:06:31,338 INFO L125 PetriNetUnfolderBase]: For 82979/86786 co-relation queries the response was YES. [2023-11-26 12:06:31,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120864 conditions, 44372 events. 29067/44372 cut-off events. For 82979/86786 co-relation queries the response was YES. Maximal size of possible extension queue 1835. Compared 342527 event pairs, 4298 based on Foata normal form. 1708/44786 useless extension candidates. Maximal degree in co-relation 120829. Up to 22063 conditions per place. [2023-11-26 12:06:31,746 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 56 selfloop transitions, 6 changer transitions 0/97 dead transitions. [2023-11-26 12:06:31,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 97 transitions, 662 flow [2023-11-26 12:06:31,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:06:31,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 12:06:31,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 137 transitions. [2023-11-26 12:06:31,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6989795918367347 [2023-11-26 12:06:31,753 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 137 transitions. [2023-11-26 12:06:31,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 137 transitions. [2023-11-26 12:06:31,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:06:31,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 137 transitions. [2023-11-26 12:06:31,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:31,755 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:31,755 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:31,756 INFO L175 Difference]: Start difference. First operand has 85 places, 63 transitions, 434 flow. Second operand 4 states and 137 transitions. [2023-11-26 12:06:31,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 97 transitions, 662 flow [2023-11-26 12:06:34,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 97 transitions, 635 flow, removed 12 selfloop flow, removed 5 redundant places. [2023-11-26 12:06:34,992 INFO L231 Difference]: Finished difference. Result has 79 places, 68 transitions, 453 flow [2023-11-26 12:06:34,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=453, PETRI_PLACES=79, PETRI_TRANSITIONS=68} [2023-11-26 12:06:34,993 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 22 predicate places. [2023-11-26 12:06:34,993 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 68 transitions, 453 flow [2023-11-26 12:06:34,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:34,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:06:34,994 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] [2023-11-26 12:06:34,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 12:06:34,994 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)] === [2023-11-26 12:06:34,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:34,995 INFO L85 PathProgramCache]: Analyzing trace with hash 888728888, now seen corresponding path program 1 times [2023-11-26 12:06:34,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:34,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460486656] [2023-11-26 12:06:34,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:34,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:35,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:35,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:06:35,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:35,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460486656] [2023-11-26 12:06:35,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460486656] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:35,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:35,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 12:06:35,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35526127] [2023-11-26 12:06:35,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:35,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 12:06:35,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:35,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:06:35,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:06:35,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 49 [2023-11-26 12:06:35,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 68 transitions, 453 flow. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:35,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:06:35,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 49 [2023-11-26 12:06:35,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand