./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe028_pso.oepc_pso.opt_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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64543c12-97fe-42c8-91e8-29dfc5a8eef5/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64543c12-97fe-42c8-91e8-29dfc5a8eef5/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_64543c12-97fe-42c8-91e8-29dfc5a8eef5/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64543c12-97fe-42c8-91e8-29dfc5a8eef5/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64543c12-97fe-42c8-91e8-29dfc5a8eef5/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_64543c12-97fe-42c8-91e8-29dfc5a8eef5/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 10dd65d363f3d099295f575f6743961c3e6b480300728ce34fc95b90972dc72c --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:44:39,365 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:44:39,430 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64543c12-97fe-42c8-91e8-29dfc5a8eef5/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 10:44:39,436 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:44:39,436 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:44:39,469 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:44:39,470 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:44:39,471 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:44:39,471 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:44:39,475 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:44:39,476 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:44:39,477 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:44:39,478 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:44:39,483 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:44:39,483 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:44:39,484 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:44:39,484 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:44:39,485 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:44:39,485 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:44:39,486 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:44:39,486 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:44:39,488 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:44:39,488 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:44:39,489 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:44:39,489 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:44:39,489 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:44:39,490 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:44:39,491 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:44:39,491 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:44:39,491 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:44:39,493 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:44:39,493 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:44:39,493 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:44:39,494 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:44:39,494 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:44:39,494 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:44:39,494 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:44:39,494 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:44:39,495 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:44:39,495 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:44:39,495 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:44:39,495 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:44:39,496 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_64543c12-97fe-42c8-91e8-29dfc5a8eef5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64543c12-97fe-42c8-91e8-29dfc5a8eef5/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10dd65d363f3d099295f575f6743961c3e6b480300728ce34fc95b90972dc72c [2023-11-26 10:44:39,771 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:44:39,793 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:44:39,796 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:44:39,798 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:44:39,798 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:44:39,800 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64543c12-97fe-42c8-91e8-29dfc5a8eef5/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/pthread-wmm/safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-26 10:44:42,881 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:44:43,216 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:44:43,218 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64543c12-97fe-42c8-91e8-29dfc5a8eef5/sv-benchmarks/c/pthread-wmm/safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-26 10:44:43,247 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64543c12-97fe-42c8-91e8-29dfc5a8eef5/bin/uautomizer-verify-VRDe98Ueme/data/5f2006e93/11f9f93089ed4575b1ae6a5d86a2aa0d/FLAG53cca6375 [2023-11-26 10:44:43,260 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64543c12-97fe-42c8-91e8-29dfc5a8eef5/bin/uautomizer-verify-VRDe98Ueme/data/5f2006e93/11f9f93089ed4575b1ae6a5d86a2aa0d [2023-11-26 10:44:43,263 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:44:43,265 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:44:43,266 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:44:43,267 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:44:43,272 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:44:43,273 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:44:43" (1/1) ... [2023-11-26 10:44:43,274 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5145ee44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:43, skipping insertion in model container [2023-11-26 10:44:43,274 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:44:43" (1/1) ... [2023-11-26 10:44:43,332 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:44:43,538 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_64543c12-97fe-42c8-91e8-29dfc5a8eef5/sv-benchmarks/c/pthread-wmm/safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-11-26 10:44:43,728 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:44:43,739 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:44:43,756 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_64543c12-97fe-42c8-91e8-29dfc5a8eef5/sv-benchmarks/c/pthread-wmm/safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-11-26 10:44:43,818 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:44:43,854 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:44:43,854 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:44:43,862 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:44:43,863 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:43 WrapperNode [2023-11-26 10:44:43,863 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:44:43,864 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:44:43,864 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:44:43,865 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:44:43,873 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:43" (1/1) ... [2023-11-26 10:44:43,898 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:43" (1/1) ... [2023-11-26 10:44:43,932 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2023-11-26 10:44:43,933 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:44:43,933 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:44:43,934 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:44:43,934 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:44:43,943 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:43" (1/1) ... [2023-11-26 10:44:43,944 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:43" (1/1) ... [2023-11-26 10:44:43,947 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:43" (1/1) ... [2023-11-26 10:44:43,967 INFO L175 MemorySlicer]: Split 5 memory accesses to 4 slices as follows [2, 1, 1, 1]. 40 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2023-11-26 10:44:43,967 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:43" (1/1) ... [2023-11-26 10:44:43,967 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:43" (1/1) ... [2023-11-26 10:44:43,985 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:43" (1/1) ... [2023-11-26 10:44:43,987 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:43" (1/1) ... [2023-11-26 10:44:43,988 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:43" (1/1) ... [2023-11-26 10:44:43,990 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:43" (1/1) ... [2023-11-26 10:44:43,993 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:44:43,994 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:44:43,995 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:44:43,995 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:44:44,004 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:43" (1/1) ... [2023-11-26 10:44:44,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:44:44,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64543c12-97fe-42c8-91e8-29dfc5a8eef5/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:44,041 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64543c12-97fe-42c8-91e8-29dfc5a8eef5/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:44:44,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64543c12-97fe-42c8-91e8-29dfc5a8eef5/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:44:44,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 10:44:44,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 10:44:44,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 10:44:44,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 10:44:44,094 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-26 10:44:44,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:44:44,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 10:44:44,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 10:44:44,094 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-26 10:44:44,095 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-26 10:44:44,095 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-26 10:44:44,095 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-26 10:44:44,095 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-26 10:44:44,095 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-26 10:44:44,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 10:44:44,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 10:44:44,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 10:44:44,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 10:44:44,097 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-26 10:44:44,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:44:44,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:44:44,098 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 10:44:44,281 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:44:44,283 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:44:44,524 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:44:44,661 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:44:44,661 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-26 10:44:44,662 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:44:44 BoogieIcfgContainer [2023-11-26 10:44:44,662 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:44:44,665 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:44:44,665 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:44:44,669 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:44:44,669 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:44:43" (1/3) ... [2023-11-26 10:44:44,670 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d2bb56a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:44:44, skipping insertion in model container [2023-11-26 10:44:44,670 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:43" (2/3) ... [2023-11-26 10:44:44,670 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d2bb56a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:44:44, skipping insertion in model container [2023-11-26 10:44:44,671 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:44:44" (3/3) ... [2023-11-26 10:44:44,672 INFO L112 eAbstractionObserver]: Analyzing ICFG safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-26 10:44:44,682 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 10:44:44,694 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:44:44,694 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 10:44:44,694 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 10:44:44,765 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 10:44:44,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 38 transitions, 88 flow [2023-11-26 10:44:44,842 INFO L124 PetriNetUnfolderBase]: 1/35 cut-off events. [2023-11-26 10:44:44,842 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 10:44:44,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 35 events. 1/35 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2023-11-26 10:44:44,846 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 38 transitions, 88 flow [2023-11-26 10:44:44,850 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 32 transitions, 73 flow [2023-11-26 10:44:44,862 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:44:44,870 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;@5fcc204a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:44:44,870 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-26 10:44:44,886 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 10:44:44,886 INFO L124 PetriNetUnfolderBase]: 0/31 cut-off events. [2023-11-26 10:44:44,886 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 10:44:44,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:44:44,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:44,888 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-26 10:44:44,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:44,904 INFO L85 PathProgramCache]: Analyzing trace with hash -482227547, now seen corresponding path program 1 times [2023-11-26 10:44:44,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:44,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088366156] [2023-11-26 10:44:44,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:44,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:45,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:45,623 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 10:44:45,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:45,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088366156] [2023-11-26 10:44:45,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088366156] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:45,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:45,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:44:45,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752819405] [2023-11-26 10:44:45,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:45,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:44:45,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:45,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:44:45,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:44:45,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 38 [2023-11-26 10:44:45,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 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 10:44:45,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:44:45,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 38 [2023-11-26 10:44:45,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:44:45,937 INFO L124 PetriNetUnfolderBase]: 291/591 cut-off events. [2023-11-26 10:44:45,938 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-26 10:44:45,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1097 conditions, 591 events. 291/591 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3236 event pairs, 58 based on Foata normal form. 27/610 useless extension candidates. Maximal degree in co-relation 1086. Up to 236 conditions per place. [2023-11-26 10:44:45,951 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 25 selfloop transitions, 5 changer transitions 1/47 dead transitions. [2023-11-26 10:44:45,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 47 transitions, 171 flow [2023-11-26 10:44:45,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:44:45,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:44:45,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 113 transitions. [2023-11-26 10:44:45,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.743421052631579 [2023-11-26 10:44:45,971 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 113 transitions. [2023-11-26 10:44:45,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 113 transitions. [2023-11-26 10:44:45,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:44:45,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 113 transitions. [2023-11-26 10:44:46,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 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 10:44:46,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 38.0) internal successors, (190), 5 states have internal predecessors, (190), 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 10:44:46,012 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 38.0) internal successors, (190), 5 states have internal predecessors, (190), 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 10:44:46,013 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 73 flow. Second operand 4 states and 113 transitions. [2023-11-26 10:44:46,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 47 transitions, 171 flow [2023-11-26 10:44:46,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 47 transitions, 166 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-26 10:44:46,019 INFO L231 Difference]: Finished difference. Result has 44 places, 35 transitions, 104 flow [2023-11-26 10:44:46,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=104, PETRI_PLACES=44, PETRI_TRANSITIONS=35} [2023-11-26 10:44:46,030 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 2 predicate places. [2023-11-26 10:44:46,032 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 35 transitions, 104 flow [2023-11-26 10:44:46,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 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 10:44:46,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:44:46,033 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 10:44:46,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 10:44:46,034 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-26 10:44:46,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:46,036 INFO L85 PathProgramCache]: Analyzing trace with hash -516999901, now seen corresponding path program 1 times [2023-11-26 10:44:46,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:46,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25717574] [2023-11-26 10:44:46,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:46,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:46,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:46,293 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 10:44:46,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:46,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25717574] [2023-11-26 10:44:46,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25717574] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:46,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:46,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:44:46,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277697107] [2023-11-26 10:44:46,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:46,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:44:46,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:46,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:44:46,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:44:46,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 38 [2023-11-26 10:44:46,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 35 transitions, 104 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 10:44:46,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:44:46,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 38 [2023-11-26 10:44:46,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:44:46,505 INFO L124 PetriNetUnfolderBase]: 249/506 cut-off events. [2023-11-26 10:44:46,505 INFO L125 PetriNetUnfolderBase]: For 173/176 co-relation queries the response was YES. [2023-11-26 10:44:46,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1184 conditions, 506 events. 249/506 cut-off events. For 173/176 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2506 event pairs, 15 based on Foata normal form. 28/527 useless extension candidates. Maximal degree in co-relation 1172. Up to 188 conditions per place. [2023-11-26 10:44:46,513 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 31 selfloop transitions, 8 changer transitions 1/56 dead transitions. [2023-11-26 10:44:46,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 56 transitions, 247 flow [2023-11-26 10:44:46,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:44:46,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 10:44:46,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 142 transitions. [2023-11-26 10:44:46,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7473684210526316 [2023-11-26 10:44:46,515 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 142 transitions. [2023-11-26 10:44:46,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 142 transitions. [2023-11-26 10:44:46,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:44:46,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 142 transitions. [2023-11-26 10:44:46,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 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 10:44:46,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 38.0) internal successors, (228), 6 states have internal predecessors, (228), 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 10:44:46,520 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 38.0) internal successors, (228), 6 states have internal predecessors, (228), 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 10:44:46,520 INFO L175 Difference]: Start difference. First operand has 44 places, 35 transitions, 104 flow. Second operand 5 states and 142 transitions. [2023-11-26 10:44:46,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 56 transitions, 247 flow [2023-11-26 10:44:46,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 56 transitions, 237 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-26 10:44:46,524 INFO L231 Difference]: Finished difference. Result has 48 places, 38 transitions, 144 flow [2023-11-26 10:44:46,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=144, PETRI_PLACES=48, PETRI_TRANSITIONS=38} [2023-11-26 10:44:46,525 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 6 predicate places. [2023-11-26 10:44:46,525 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 38 transitions, 144 flow [2023-11-26 10:44:46,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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 10:44:46,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:44:46,526 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] [2023-11-26 10:44:46,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 10:44:46,526 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-26 10:44:46,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:46,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1831133197, now seen corresponding path program 1 times [2023-11-26 10:44:46,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:46,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231332512] [2023-11-26 10:44:46,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:46,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:46,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:46,761 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 10:44:46,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:46,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231332512] [2023-11-26 10:44:46,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231332512] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:46,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:46,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 10:44:46,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756394752] [2023-11-26 10:44:46,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:46,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:44:46,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:46,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:44:46,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:44:46,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 38 [2023-11-26 10:44:46,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 38 transitions, 144 flow. Second operand has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 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 10:44:46,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:44:46,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 38 [2023-11-26 10:44:46,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:44:46,948 INFO L124 PetriNetUnfolderBase]: 174/341 cut-off events. [2023-11-26 10:44:46,948 INFO L125 PetriNetUnfolderBase]: For 358/364 co-relation queries the response was YES. [2023-11-26 10:44:46,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 940 conditions, 341 events. 174/341 cut-off events. For 358/364 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1279 event pairs, 6 based on Foata normal form. 24/358 useless extension candidates. Maximal degree in co-relation 926. Up to 108 conditions per place. [2023-11-26 10:44:46,952 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 29 selfloop transitions, 11 changer transitions 1/57 dead transitions. [2023-11-26 10:44:46,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 57 transitions, 274 flow [2023-11-26 10:44:46,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:44:46,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 10:44:46,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 163 transitions. [2023-11-26 10:44:46,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7149122807017544 [2023-11-26 10:44:46,959 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 163 transitions. [2023-11-26 10:44:46,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 163 transitions. [2023-11-26 10:44:46,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:44:46,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 163 transitions. [2023-11-26 10:44:46,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 27.166666666666668) internal successors, (163), 6 states have internal predecessors, (163), 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 10:44:46,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 38.0) internal successors, (266), 7 states have internal predecessors, (266), 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 10:44:46,965 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 38.0) internal successors, (266), 7 states have internal predecessors, (266), 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 10:44:46,966 INFO L175 Difference]: Start difference. First operand has 48 places, 38 transitions, 144 flow. Second operand 6 states and 163 transitions. [2023-11-26 10:44:46,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 57 transitions, 274 flow [2023-11-26 10:44:46,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 57 transitions, 249 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-11-26 10:44:46,974 INFO L231 Difference]: Finished difference. Result has 51 places, 38 transitions, 158 flow [2023-11-26 10:44:46,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=158, PETRI_PLACES=51, PETRI_TRANSITIONS=38} [2023-11-26 10:44:46,976 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 9 predicate places. [2023-11-26 10:44:46,976 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 38 transitions, 158 flow [2023-11-26 10:44:46,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 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 10:44:46,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:44:46,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:46,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 10:44:46,977 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-26 10:44:46,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:46,978 INFO L85 PathProgramCache]: Analyzing trace with hash -636148072, now seen corresponding path program 1 times [2023-11-26 10:44:46,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:46,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806296579] [2023-11-26 10:44:46,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:46,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:47,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:47,215 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 10:44:47,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:47,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806296579] [2023-11-26 10:44:47,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806296579] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:47,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:47,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 10:44:47,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302685621] [2023-11-26 10:44:47,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:47,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:44:47,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:47,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:44:47,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:44:47,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 38 [2023-11-26 10:44:47,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 38 transitions, 158 flow. Second operand has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 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 10:44:47,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:44:47,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 38 [2023-11-26 10:44:47,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:44:47,501 INFO L124 PetriNetUnfolderBase]: 376/771 cut-off events. [2023-11-26 10:44:47,501 INFO L125 PetriNetUnfolderBase]: For 516/530 co-relation queries the response was YES. [2023-11-26 10:44:47,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1871 conditions, 771 events. 376/771 cut-off events. For 516/530 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4065 event pairs, 84 based on Foata normal form. 8/735 useless extension candidates. Maximal degree in co-relation 1856. Up to 279 conditions per place. [2023-11-26 10:44:47,510 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 34 selfloop transitions, 8 changer transitions 10/72 dead transitions. [2023-11-26 10:44:47,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 72 transitions, 346 flow [2023-11-26 10:44:47,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 10:44:47,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-26 10:44:47,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2023-11-26 10:44:47,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6729323308270677 [2023-11-26 10:44:47,512 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 179 transitions. [2023-11-26 10:44:47,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 179 transitions. [2023-11-26 10:44:47,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:44:47,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 179 transitions. [2023-11-26 10:44:47,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 25.571428571428573) internal successors, (179), 7 states have internal predecessors, (179), 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 10:44:47,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 38.0) internal successors, (304), 8 states have internal predecessors, (304), 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 10:44:47,515 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 38.0) internal successors, (304), 8 states have internal predecessors, (304), 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 10:44:47,515 INFO L175 Difference]: Start difference. First operand has 51 places, 38 transitions, 158 flow. Second operand 7 states and 179 transitions. [2023-11-26 10:44:47,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 72 transitions, 346 flow [2023-11-26 10:44:47,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 72 transitions, 282 flow, removed 14 selfloop flow, removed 8 redundant places. [2023-11-26 10:44:47,523 INFO L231 Difference]: Finished difference. Result has 54 places, 44 transitions, 158 flow [2023-11-26 10:44:47,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=158, PETRI_PLACES=54, PETRI_TRANSITIONS=44} [2023-11-26 10:44:47,524 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 12 predicate places. [2023-11-26 10:44:47,525 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 44 transitions, 158 flow [2023-11-26 10:44:47,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 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 10:44:47,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:44:47,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:47,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 10:44:47,526 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-26 10:44:47,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:47,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1044394116, now seen corresponding path program 2 times [2023-11-26 10:44:47,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:47,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585354161] [2023-11-26 10:44:47,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:47,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:47,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:47,727 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 10:44:47,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:47,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585354161] [2023-11-26 10:44:47,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585354161] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:47,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:47,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 10:44:47,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458102876] [2023-11-26 10:44:47,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:47,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:44:47,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:47,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:44:47,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:44:47,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 38 [2023-11-26 10:44:47,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 44 transitions, 158 flow. Second operand has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 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 10:44:47,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:44:47,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 38 [2023-11-26 10:44:47,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:44:48,025 INFO L124 PetriNetUnfolderBase]: 473/948 cut-off events. [2023-11-26 10:44:48,026 INFO L125 PetriNetUnfolderBase]: For 243/247 co-relation queries the response was YES. [2023-11-26 10:44:48,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2108 conditions, 948 events. 473/948 cut-off events. For 243/247 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 5208 event pairs, 129 based on Foata normal form. 12/877 useless extension candidates. Maximal degree in co-relation 2092. Up to 452 conditions per place. [2023-11-26 10:44:48,033 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 24 selfloop transitions, 7 changer transitions 25/77 dead transitions. [2023-11-26 10:44:48,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 77 transitions, 369 flow [2023-11-26 10:44:48,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 10:44:48,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-26 10:44:48,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2023-11-26 10:44:48,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6616541353383458 [2023-11-26 10:44:48,036 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 176 transitions. [2023-11-26 10:44:48,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 176 transitions. [2023-11-26 10:44:48,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:44:48,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 176 transitions. [2023-11-26 10:44:48,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 25.142857142857142) internal successors, (176), 7 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:48,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 38.0) internal successors, (304), 8 states have internal predecessors, (304), 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 10:44:48,038 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 38.0) internal successors, (304), 8 states have internal predecessors, (304), 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 10:44:48,039 INFO L175 Difference]: Start difference. First operand has 54 places, 44 transitions, 158 flow. Second operand 7 states and 176 transitions. [2023-11-26 10:44:48,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 77 transitions, 369 flow [2023-11-26 10:44:48,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 77 transitions, 363 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-26 10:44:48,042 INFO L231 Difference]: Finished difference. Result has 60 places, 43 transitions, 174 flow [2023-11-26 10:44:48,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=174, PETRI_PLACES=60, PETRI_TRANSITIONS=43} [2023-11-26 10:44:48,044 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 18 predicate places. [2023-11-26 10:44:48,044 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 43 transitions, 174 flow [2023-11-26 10:44:48,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 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 10:44:48,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:44:48,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:48,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 10:44:48,045 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-26 10:44:48,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:48,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1884362716, now seen corresponding path program 3 times [2023-11-26 10:44:48,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:48,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821989128] [2023-11-26 10:44:48,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:48,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:48,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:48,260 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 10:44:48,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:48,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821989128] [2023-11-26 10:44:48,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821989128] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:48,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:48,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 10:44:48,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632519179] [2023-11-26 10:44:48,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:48,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 10:44:48,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:48,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 10:44:48,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:44:48,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 38 [2023-11-26 10:44:48,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 43 transitions, 174 flow. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 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 10:44:48,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:44:48,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 38 [2023-11-26 10:44:48,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:44:48,550 INFO L124 PetriNetUnfolderBase]: 324/730 cut-off events. [2023-11-26 10:44:48,551 INFO L125 PetriNetUnfolderBase]: For 346/346 co-relation queries the response was YES. [2023-11-26 10:44:48,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1630 conditions, 730 events. 324/730 cut-off events. For 346/346 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 4079 event pairs, 109 based on Foata normal form. 8/685 useless extension candidates. Maximal degree in co-relation 1610. Up to 233 conditions per place. [2023-11-26 10:44:48,556 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 18 selfloop transitions, 3 changer transitions 29/70 dead transitions. [2023-11-26 10:44:48,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 70 transitions, 346 flow [2023-11-26 10:44:48,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 10:44:48,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-26 10:44:48,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2023-11-26 10:44:48,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6381578947368421 [2023-11-26 10:44:48,558 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 194 transitions. [2023-11-26 10:44:48,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 194 transitions. [2023-11-26 10:44:48,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:44:48,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 194 transitions. [2023-11-26 10:44:48,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 24.25) internal successors, (194), 8 states have internal predecessors, (194), 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 10:44:48,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 38.0) internal successors, (342), 9 states have internal predecessors, (342), 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 10:44:48,561 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 38.0) internal successors, (342), 9 states have internal predecessors, (342), 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 10:44:48,561 INFO L175 Difference]: Start difference. First operand has 60 places, 43 transitions, 174 flow. Second operand 8 states and 194 transitions. [2023-11-26 10:44:48,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 70 transitions, 346 flow [2023-11-26 10:44:48,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 70 transitions, 331 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-11-26 10:44:48,565 INFO L231 Difference]: Finished difference. Result has 65 places, 38 transitions, 140 flow [2023-11-26 10:44:48,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=140, PETRI_PLACES=65, PETRI_TRANSITIONS=38} [2023-11-26 10:44:48,566 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places. [2023-11-26 10:44:48,567 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 38 transitions, 140 flow [2023-11-26 10:44:48,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 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 10:44:48,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:44:48,567 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:48,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 10:44:48,568 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-26 10:44:48,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:48,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1213168358, now seen corresponding path program 4 times [2023-11-26 10:44:48,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:48,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592807930] [2023-11-26 10:44:48,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:48,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:48,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:48,730 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 10:44:48,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:48,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592807930] [2023-11-26 10:44:48,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592807930] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:48,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:48,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 10:44:48,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357882266] [2023-11-26 10:44:48,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:48,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:44:48,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:48,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:44:48,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:44:48,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 38 [2023-11-26 10:44:48,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 38 transitions, 140 flow. Second operand has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 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 10:44:48,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:44:48,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 38 [2023-11-26 10:44:48,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:44:48,892 INFO L124 PetriNetUnfolderBase]: 111/243 cut-off events. [2023-11-26 10:44:48,893 INFO L125 PetriNetUnfolderBase]: For 98/98 co-relation queries the response was YES. [2023-11-26 10:44:48,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 548 conditions, 243 events. 111/243 cut-off events. For 98/98 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 972 event pairs, 38 based on Foata normal form. 8/215 useless extension candidates. Maximal degree in co-relation 536. Up to 122 conditions per place. [2023-11-26 10:44:48,894 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 0 selfloop transitions, 0 changer transitions 45/45 dead transitions. [2023-11-26 10:44:48,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 45 transitions, 200 flow [2023-11-26 10:44:48,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:44:48,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 10:44:48,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2023-11-26 10:44:48,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6359649122807017 [2023-11-26 10:44:48,897 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 145 transitions. [2023-11-26 10:44:48,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 145 transitions. [2023-11-26 10:44:48,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:44:48,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 145 transitions. [2023-11-26 10:44:48,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 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 10:44:48,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 38.0) internal successors, (266), 7 states have internal predecessors, (266), 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 10:44:48,899 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 38.0) internal successors, (266), 7 states have internal predecessors, (266), 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 10:44:48,899 INFO L175 Difference]: Start difference. First operand has 65 places, 38 transitions, 140 flow. Second operand 6 states and 145 transitions. [2023-11-26 10:44:48,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 45 transitions, 200 flow [2023-11-26 10:44:48,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 45 transitions, 179 flow, removed 5 selfloop flow, removed 8 redundant places. [2023-11-26 10:44:48,902 INFO L231 Difference]: Finished difference. Result has 54 places, 0 transitions, 0 flow [2023-11-26 10:44:48,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=54, PETRI_TRANSITIONS=0} [2023-11-26 10:44:48,903 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 12 predicate places. [2023-11-26 10:44:48,903 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 0 transitions, 0 flow [2023-11-26 10:44:48,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 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 10:44:48,921 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-26 10:44:48,922 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-26 10:44:48,922 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-26 10:44:48,922 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-26 10:44:48,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 10:44:48,923 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1] [2023-11-26 10:44:48,927 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-26 10:44:48,927 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-26 10:44:48,932 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 10:44:48 BasicIcfg [2023-11-26 10:44:48,932 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-26 10:44:48,933 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 10:44:48,933 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 10:44:48,933 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 10:44:48,934 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:44:44" (3/4) ... [2023-11-26 10:44:48,936 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-26 10:44:48,939 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-26 10:44:48,940 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-26 10:44:48,940 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-11-26 10:44:48,945 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 35 nodes and edges [2023-11-26 10:44:48,945 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2023-11-26 10:44:48,946 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-26 10:44:48,946 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-26 10:44:49,027 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64543c12-97fe-42c8-91e8-29dfc5a8eef5/bin/uautomizer-verify-VRDe98Ueme/witness.graphml [2023-11-26 10:44:49,028 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64543c12-97fe-42c8-91e8-29dfc5a8eef5/bin/uautomizer-verify-VRDe98Ueme/witness.yml [2023-11-26 10:44:49,028 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 10:44:49,029 INFO L158 Benchmark]: Toolchain (without parser) took 5764.40ms. Allocated memory was 125.8MB in the beginning and 199.2MB in the end (delta: 73.4MB). Free memory was 78.2MB in the beginning and 164.1MB in the end (delta: -85.9MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 10:44:49,029 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 125.8MB. Free memory was 97.2MB in the beginning and 97.1MB in the end (delta: 84.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 10:44:49,030 INFO L158 Benchmark]: CACSL2BoogieTranslator took 597.15ms. Allocated memory is still 125.8MB. Free memory was 78.2MB in the beginning and 57.2MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-26 10:44:49,030 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.64ms. Allocated memory is still 125.8MB. Free memory was 57.2MB in the beginning and 55.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 10:44:49,031 INFO L158 Benchmark]: Boogie Preprocessor took 60.30ms. Allocated memory is still 125.8MB. Free memory was 55.1MB in the beginning and 52.7MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 10:44:49,031 INFO L158 Benchmark]: RCFGBuilder took 667.39ms. Allocated memory was 125.8MB in the beginning and 165.7MB in the end (delta: 39.8MB). Free memory was 52.7MB in the beginning and 124.8MB in the end (delta: -72.1MB). Peak memory consumption was 18.0MB. Max. memory is 16.1GB. [2023-11-26 10:44:49,032 INFO L158 Benchmark]: TraceAbstraction took 4267.70ms. Allocated memory was 165.7MB in the beginning and 199.2MB in the end (delta: 33.6MB). Free memory was 124.8MB in the beginning and 168.3MB in the end (delta: -43.5MB). Peak memory consumption was 94.5MB. Max. memory is 16.1GB. [2023-11-26 10:44:49,032 INFO L158 Benchmark]: Witness Printer took 95.37ms. Allocated memory is still 199.2MB. Free memory was 168.3MB in the beginning and 164.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-26 10:44:49,035 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 125.8MB. Free memory was 97.2MB in the beginning and 97.1MB in the end (delta: 84.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 597.15ms. Allocated memory is still 125.8MB. Free memory was 78.2MB in the beginning and 57.2MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.64ms. Allocated memory is still 125.8MB. Free memory was 57.2MB in the beginning and 55.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 60.30ms. Allocated memory is still 125.8MB. Free memory was 55.1MB in the beginning and 52.7MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 667.39ms. Allocated memory was 125.8MB in the beginning and 165.7MB in the end (delta: 39.8MB). Free memory was 52.7MB in the beginning and 124.8MB in the end (delta: -72.1MB). Peak memory consumption was 18.0MB. Max. memory is 16.1GB. * TraceAbstraction took 4267.70ms. Allocated memory was 165.7MB in the beginning and 199.2MB in the end (delta: 33.6MB). Free memory was 124.8MB in the beginning and 168.3MB in the end (delta: -43.5MB). Peak memory consumption was 94.5MB. Max. memory is 16.1GB. * Witness Printer took 95.37ms. Allocated memory is still 199.2MB. Free memory was 168.3MB in the beginning and 164.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 62 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.1s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 333 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 290 mSDsluCounter, 168 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 133 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 635 IncrementalHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 35 mSDtfsCounter, 635 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 58 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=174occurred in iteration=5, InterpolantAutomatonStates: 43, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 171 NumberOfCodeBlocks, 171 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 164 ConstructedInterpolants, 0 QuantifiedInterpolants, 808 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-26 10:44:49,052 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64543c12-97fe-42c8-91e8-29dfc5a8eef5/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE