./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe021_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05999f7a-99a2-4d1e-b444-4b1d32ed7df7/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05999f7a-99a2-4d1e-b444-4b1d32ed7df7/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_05999f7a-99a2-4d1e-b444-4b1d32ed7df7/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05999f7a-99a2-4d1e-b444-4b1d32ed7df7/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe021_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05999f7a-99a2-4d1e-b444-4b1d32ed7df7/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_05999f7a-99a2-4d1e-b444-4b1d32ed7df7/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 09edf41151ee2be1e615b82a5ff75107fc67a0fb206ce4e8ba7b647488d110c1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 12:06:21,286 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 12:06:21,397 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05999f7a-99a2-4d1e-b444-4b1d32ed7df7/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 12:06:21,405 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 12:06:21,405 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 12:06:21,450 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 12:06:21,451 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 12:06:21,452 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 12:06:21,453 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 12:06:21,459 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 12:06:21,459 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 12:06:21,461 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 12:06:21,461 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 12:06:21,463 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 12:06:21,464 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 12:06:21,464 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 12:06:21,465 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 12:06:21,465 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 12:06:21,466 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 12:06:21,466 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 12:06:21,467 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 12:06:21,467 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 12:06:21,468 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 12:06:21,468 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 12:06:21,469 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 12:06:21,469 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 12:06:21,469 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 12:06:21,470 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 12:06:21,471 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 12:06:21,471 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 12:06:21,473 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 12:06:21,473 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:06:21,473 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 12:06:21,474 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 12:06:21,474 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 12:06:21,474 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 12:06:21,475 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 12:06:21,475 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 12:06:21,475 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 12:06:21,475 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 12:06:21,476 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 12:06:21,476 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 12:06:21,476 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_05999f7a-99a2-4d1e-b444-4b1d32ed7df7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05999f7a-99a2-4d1e-b444-4b1d32ed7df7/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 09edf41151ee2be1e615b82a5ff75107fc67a0fb206ce4e8ba7b647488d110c1 [2023-11-26 12:06:21,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 12:06:21,806 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 12:06:21,808 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 12:06:21,810 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 12:06:21,810 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 12:06:21,812 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05999f7a-99a2-4d1e-b444-4b1d32ed7df7/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/pthread-wmm/safe021_tso.i [2023-11-26 12:06:25,017 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 12:06:25,302 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 12:06:25,303 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05999f7a-99a2-4d1e-b444-4b1d32ed7df7/sv-benchmarks/c/pthread-wmm/safe021_tso.i [2023-11-26 12:06:25,325 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05999f7a-99a2-4d1e-b444-4b1d32ed7df7/bin/uautomizer-verify-VRDe98Ueme/data/b3f871185/91190f2816114e36bcf0ef48e4dc40db/FLAG039672a48 [2023-11-26 12:06:25,338 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05999f7a-99a2-4d1e-b444-4b1d32ed7df7/bin/uautomizer-verify-VRDe98Ueme/data/b3f871185/91190f2816114e36bcf0ef48e4dc40db [2023-11-26 12:06:25,340 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 12:06:25,342 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 12:06:25,343 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 12:06:25,343 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 12:06:25,349 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 12:06:25,350 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:06:25" (1/1) ... [2023-11-26 12:06:25,351 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@654b8310 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:25, skipping insertion in model container [2023-11-26 12:06:25,351 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:06:25" (1/1) ... [2023-11-26 12:06:25,405 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:06:25,584 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_05999f7a-99a2-4d1e-b444-4b1d32ed7df7/sv-benchmarks/c/pthread-wmm/safe021_tso.i[945,958] [2023-11-26 12:06:25,821 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:06:25,836 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 12:06:25,853 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_05999f7a-99a2-4d1e-b444-4b1d32ed7df7/sv-benchmarks/c/pthread-wmm/safe021_tso.i[945,958] [2023-11-26 12:06:25,922 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:06:25,970 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:06:25,970 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:06:25,978 INFO L206 MainTranslator]: Completed translation [2023-11-26 12:06:25,979 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:25 WrapperNode [2023-11-26 12:06:25,979 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 12:06:25,981 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 12:06:25,981 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 12:06:25,981 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 12:06:25,991 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:25" (1/1) ... [2023-11-26 12:06:26,024 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:25" (1/1) ... [2023-11-26 12:06:26,089 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2023-11-26 12:06:26,089 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 12:06:26,090 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 12:06:26,090 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 12:06:26,090 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 12:06:26,103 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:25" (1/1) ... [2023-11-26 12:06:26,135 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:25" (1/1) ... [2023-11-26 12:06:26,142 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:25" (1/1) ... [2023-11-26 12:06:26,160 INFO L175 MemorySlicer]: Split 5 memory accesses to 4 slices as follows [2, 1, 1, 1]. 40 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2023-11-26 12:06:26,161 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:25" (1/1) ... [2023-11-26 12:06:26,161 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:25" (1/1) ... [2023-11-26 12:06:26,180 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:25" (1/1) ... [2023-11-26 12:06:26,182 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:25" (1/1) ... [2023-11-26 12:06:26,185 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:25" (1/1) ... [2023-11-26 12:06:26,186 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:25" (1/1) ... [2023-11-26 12:06:26,189 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 12:06:26,194 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 12:06:26,194 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 12:06:26,194 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 12:06:26,195 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:25" (1/1) ... [2023-11-26 12:06:26,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:06:26,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05999f7a-99a2-4d1e-b444-4b1d32ed7df7/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:06:26,236 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05999f7a-99a2-4d1e-b444-4b1d32ed7df7/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 12:06:26,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05999f7a-99a2-4d1e-b444-4b1d32ed7df7/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 12:06:26,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 12:06:26,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 12:06:26,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 12:06:26,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 12:06:26,292 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-26 12:06:26,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 12:06:26,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 12:06:26,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 12:06:26,296 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-26 12:06:26,296 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-26 12:06:26,296 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-26 12:06:26,296 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-26 12:06:26,296 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-26 12:06:26,297 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-26 12:06:26,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 12:06:26,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 12:06:26,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 12:06:26,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 12:06:26,299 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-26 12:06:26,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 12:06:26,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 12:06:26,301 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 12:06:26,505 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 12:06:26,508 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 12:06:26,705 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 12:06:26,881 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 12:06:26,881 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-26 12:06:26,882 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:06:26 BoogieIcfgContainer [2023-11-26 12:06:26,882 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 12:06:26,884 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 12:06:26,885 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 12:06:26,888 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 12:06:26,888 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:06:25" (1/3) ... [2023-11-26 12:06:26,888 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@762a4619 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:06:26, skipping insertion in model container [2023-11-26 12:06:26,889 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:25" (2/3) ... [2023-11-26 12:06:26,889 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@762a4619 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:06:26, skipping insertion in model container [2023-11-26 12:06:26,889 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:06:26" (3/3) ... [2023-11-26 12:06:26,891 INFO L112 eAbstractionObserver]: Analyzing ICFG safe021_tso.i [2023-11-26 12:06:26,902 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 12:06:26,912 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 12:06:26,913 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 12:06:26,913 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 12:06:26,962 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 12:06:27,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 38 transitions, 88 flow [2023-11-26 12:06:27,051 INFO L124 PetriNetUnfolderBase]: 1/35 cut-off events. [2023-11-26 12:06:27,051 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 12:06:27,055 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 59 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 12:06:27,055 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 38 transitions, 88 flow [2023-11-26 12:06:27,060 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 32 transitions, 73 flow [2023-11-26 12:06:27,073 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:06:27,081 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;@1b421428, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:06:27,082 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-26 12:06:27,098 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 12:06:27,099 INFO L124 PetriNetUnfolderBase]: 0/31 cut-off events. [2023-11-26 12:06:27,099 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 12:06:27,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:06:27,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:06:27,101 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 12:06:27,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:27,108 INFO L85 PathProgramCache]: Analyzing trace with hash 899251850, now seen corresponding path program 1 times [2023-11-26 12:06:27,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:27,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918076159] [2023-11-26 12:06:27,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:27,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:27,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:28,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:06:28,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:28,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918076159] [2023-11-26 12:06:28,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918076159] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:28,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:28,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 12:06:28,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893287683] [2023-11-26 12:06:28,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:28,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 12:06:28,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:28,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:06:28,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:06:28,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 38 [2023-11-26 12:06:28,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 73 flow. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:28,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:06:28,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 38 [2023-11-26 12:06:28,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:06:28,884 INFO L124 PetriNetUnfolderBase]: 828/1627 cut-off events. [2023-11-26 12:06:28,885 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-26 12:06:28,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2982 conditions, 1627 events. 828/1627 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 11434 event pairs, 211 based on Foata normal form. 58/1636 useless extension candidates. Maximal degree in co-relation 2971. Up to 644 conditions per place. [2023-11-26 12:06:28,909 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 26 selfloop transitions, 5 changer transitions 31/76 dead transitions. [2023-11-26 12:06:28,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 76 transitions, 288 flow [2023-11-26 12:06:28,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 12:06:28,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-26 12:06:28,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2023-11-26 12:06:28,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6879699248120301 [2023-11-26 12:06:28,933 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 183 transitions. [2023-11-26 12:06:28,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 183 transitions. [2023-11-26 12:06:28,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:06:28,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 183 transitions. [2023-11-26 12:06:28,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 26.142857142857142) internal successors, (183), 7 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:28,956 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 12:06:28,957 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 12:06:28,960 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 73 flow. Second operand 7 states and 183 transitions. [2023-11-26 12:06:28,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 76 transitions, 288 flow [2023-11-26 12:06:28,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 76 transitions, 284 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-26 12:06:28,972 INFO L231 Difference]: Finished difference. Result has 51 places, 36 transitions, 132 flow [2023-11-26 12:06:28,975 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=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=132, PETRI_PLACES=51, PETRI_TRANSITIONS=36} [2023-11-26 12:06:28,982 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 9 predicate places. [2023-11-26 12:06:28,983 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 36 transitions, 132 flow [2023-11-26 12:06:28,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:28,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:06:28,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:06:28,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 12:06:28,984 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 12:06:28,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:28,986 INFO L85 PathProgramCache]: Analyzing trace with hash -292385175, now seen corresponding path program 1 times [2023-11-26 12:06:28,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:28,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121808877] [2023-11-26 12:06:28,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:28,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:29,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:29,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:06:29,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:29,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121808877] [2023-11-26 12:06:29,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121808877] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:29,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:29,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 12:06:29,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293208472] [2023-11-26 12:06:29,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:29,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:06:29,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:29,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:06:29,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:06:29,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 38 [2023-11-26 12:06:29,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 36 transitions, 132 flow. Second operand has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:29,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:06:29,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 38 [2023-11-26 12:06:29,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:06:29,931 INFO L124 PetriNetUnfolderBase]: 684/1398 cut-off events. [2023-11-26 12:06:29,931 INFO L125 PetriNetUnfolderBase]: For 1177/1177 co-relation queries the response was YES. [2023-11-26 12:06:29,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3720 conditions, 1398 events. 684/1398 cut-off events. For 1177/1177 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 9728 event pairs, 126 based on Foata normal form. 40/1422 useless extension candidates. Maximal degree in co-relation 3704. Up to 517 conditions per place. [2023-11-26 12:06:29,948 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 29 selfloop transitions, 6 changer transitions 32/81 dead transitions. [2023-11-26 12:06:29,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 81 transitions, 442 flow [2023-11-26 12:06:29,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 12:06:29,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-26 12:06:29,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 236 transitions. [2023-11-26 12:06:29,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6210526315789474 [2023-11-26 12:06:29,953 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 236 transitions. [2023-11-26 12:06:29,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 236 transitions. [2023-11-26 12:06:29,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:06:29,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 236 transitions. [2023-11-26 12:06:29,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 23.6) internal successors, (236), 10 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:29,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 38.0) internal successors, (418), 11 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:29,958 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 38.0) internal successors, (418), 11 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:29,958 INFO L175 Difference]: Start difference. First operand has 51 places, 36 transitions, 132 flow. Second operand 10 states and 236 transitions. [2023-11-26 12:06:29,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 81 transitions, 442 flow [2023-11-26 12:06:29,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 81 transitions, 392 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-11-26 12:06:29,991 INFO L231 Difference]: Finished difference. Result has 63 places, 38 transitions, 170 flow [2023-11-26 12:06:29,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=170, PETRI_PLACES=63, PETRI_TRANSITIONS=38} [2023-11-26 12:06:29,992 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 21 predicate places. [2023-11-26 12:06:29,992 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 38 transitions, 170 flow [2023-11-26 12:06:29,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:29,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:06:29,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:06:29,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 12:06:29,993 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 12:06:29,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:29,994 INFO L85 PathProgramCache]: Analyzing trace with hash -2053868597, now seen corresponding path program 1 times [2023-11-26 12:06:29,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:29,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124478208] [2023-11-26 12:06:29,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:29,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:30,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:30,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:06:30,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:30,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124478208] [2023-11-26 12:06:30,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124478208] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:30,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:30,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 12:06:30,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701823870] [2023-11-26 12:06:30,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:30,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:06:30,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:30,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:06:30,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:06:30,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 38 [2023-11-26 12:06:30,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 38 transitions, 170 flow. Second operand has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:30,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:06:30,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 38 [2023-11-26 12:06:30,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:06:30,596 INFO L124 PetriNetUnfolderBase]: 637/1299 cut-off events. [2023-11-26 12:06:30,597 INFO L125 PetriNetUnfolderBase]: For 2589/2591 co-relation queries the response was YES. [2023-11-26 12:06:30,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3907 conditions, 1299 events. 637/1299 cut-off events. For 2589/2591 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 8518 event pairs, 152 based on Foata normal form. 43/1320 useless extension candidates. Maximal degree in co-relation 3882. Up to 518 conditions per place. [2023-11-26 12:06:30,614 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 34 selfloop transitions, 11 changer transitions 34/93 dead transitions. [2023-11-26 12:06:30,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 93 transitions, 612 flow [2023-11-26 12:06:30,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 12:06:30,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-26 12:06:30,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 248 transitions. [2023-11-26 12:06:30,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6526315789473685 [2023-11-26 12:06:30,617 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 248 transitions. [2023-11-26 12:06:30,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 248 transitions. [2023-11-26 12:06:30,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:06:30,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 248 transitions. [2023-11-26 12:06:30,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 24.8) internal successors, (248), 10 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:30,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 38.0) internal successors, (418), 11 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:30,623 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 38.0) internal successors, (418), 11 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:30,623 INFO L175 Difference]: Start difference. First operand has 63 places, 38 transitions, 170 flow. Second operand 10 states and 248 transitions. [2023-11-26 12:06:30,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 93 transitions, 612 flow [2023-11-26 12:06:30,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 93 transitions, 560 flow, removed 24 selfloop flow, removed 7 redundant places. [2023-11-26 12:06:30,645 INFO L231 Difference]: Finished difference. Result has 67 places, 42 transitions, 235 flow [2023-11-26 12:06:30,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=235, PETRI_PLACES=67, PETRI_TRANSITIONS=42} [2023-11-26 12:06:30,647 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 25 predicate places. [2023-11-26 12:06:30,647 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 42 transitions, 235 flow [2023-11-26 12:06:30,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:30,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:06:30,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:06:30,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 12:06:30,649 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 12:06:30,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:30,649 INFO L85 PathProgramCache]: Analyzing trace with hash 368749580, now seen corresponding path program 1 times [2023-11-26 12:06:30,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:30,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784826526] [2023-11-26 12:06:30,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:30,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:30,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:30,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:06:30,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:30,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784826526] [2023-11-26 12:06:30,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784826526] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:30,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:30,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 12:06:30,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291811449] [2023-11-26 12:06:30,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:30,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:06:30,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:30,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:06:30,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:06:30,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2023-11-26 12:06:30,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 42 transitions, 235 flow. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:30,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:06:30,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2023-11-26 12:06:30,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:06:31,680 INFO L124 PetriNetUnfolderBase]: 965/1931 cut-off events. [2023-11-26 12:06:31,681 INFO L125 PetriNetUnfolderBase]: For 4965/4972 co-relation queries the response was YES. [2023-11-26 12:06:31,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6040 conditions, 1931 events. 965/1931 cut-off events. For 4965/4972 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 13609 event pairs, 95 based on Foata normal form. 57/1971 useless extension candidates. Maximal degree in co-relation 6012. Up to 443 conditions per place. [2023-11-26 12:06:31,708 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 50 selfloop transitions, 19 changer transitions 54/136 dead transitions. [2023-11-26 12:06:31,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 136 transitions, 1086 flow [2023-11-26 12:06:31,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-26 12:06:31,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-26 12:06:31,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 318 transitions. [2023-11-26 12:06:31,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6437246963562753 [2023-11-26 12:06:31,711 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 318 transitions. [2023-11-26 12:06:31,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 318 transitions. [2023-11-26 12:06:31,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:06:31,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 318 transitions. [2023-11-26 12:06:31,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 24.46153846153846) internal successors, (318), 13 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:31,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 38.0) internal successors, (532), 14 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:31,718 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 38.0) internal successors, (532), 14 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:31,718 INFO L175 Difference]: Start difference. First operand has 67 places, 42 transitions, 235 flow. Second operand 13 states and 318 transitions. [2023-11-26 12:06:31,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 136 transitions, 1086 flow [2023-11-26 12:06:31,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 136 transitions, 980 flow, removed 53 selfloop flow, removed 8 redundant places. [2023-11-26 12:06:31,746 INFO L231 Difference]: Finished difference. Result has 77 places, 54 transitions, 457 flow [2023-11-26 12:06:31,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=457, PETRI_PLACES=77, PETRI_TRANSITIONS=54} [2023-11-26 12:06:31,749 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 35 predicate places. [2023-11-26 12:06:31,750 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 54 transitions, 457 flow [2023-11-26 12:06:31,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:31,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:06:31,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:06:31,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 12:06:31,752 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 12:06:31,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:31,752 INFO L85 PathProgramCache]: Analyzing trace with hash 2012553322, now seen corresponding path program 2 times [2023-11-26 12:06:31,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:31,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347117989] [2023-11-26 12:06:31,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:31,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:31,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:32,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:06:32,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:32,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347117989] [2023-11-26 12:06:32,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347117989] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:32,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:32,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 12:06:32,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733512960] [2023-11-26 12:06:32,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:32,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 12:06:32,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:32,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 12:06:32,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-26 12:06:32,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2023-11-26 12:06:32,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 54 transitions, 457 flow. Second operand has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:32,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:06:32,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2023-11-26 12:06:32,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:06:32,664 INFO L124 PetriNetUnfolderBase]: 966/1969 cut-off events. [2023-11-26 12:06:32,665 INFO L125 PetriNetUnfolderBase]: For 10161/10186 co-relation queries the response was YES. [2023-11-26 12:06:32,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7387 conditions, 1969 events. 966/1969 cut-off events. For 10161/10186 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 14343 event pairs, 184 based on Foata normal form. 52/2015 useless extension candidates. Maximal degree in co-relation 7353. Up to 444 conditions per place. [2023-11-26 12:06:32,690 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 35 selfloop transitions, 7 changer transitions 54/109 dead transitions. [2023-11-26 12:06:32,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 109 transitions, 1124 flow [2023-11-26 12:06:32,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 12:06:32,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-26 12:06:32,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 215 transitions. [2023-11-26 12:06:32,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6286549707602339 [2023-11-26 12:06:32,693 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 215 transitions. [2023-11-26 12:06:32,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 215 transitions. [2023-11-26 12:06:32,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:06:32,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 215 transitions. [2023-11-26 12:06:32,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 23.88888888888889) internal successors, (215), 9 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:32,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 38.0) internal successors, (380), 10 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:32,697 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 38.0) internal successors, (380), 10 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:32,697 INFO L175 Difference]: Start difference. First operand has 77 places, 54 transitions, 457 flow. Second operand 9 states and 215 transitions. [2023-11-26 12:06:32,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 109 transitions, 1124 flow [2023-11-26 12:06:32,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 109 transitions, 994 flow, removed 65 selfloop flow, removed 6 redundant places. [2023-11-26 12:06:32,739 INFO L231 Difference]: Finished difference. Result has 77 places, 39 transitions, 254 flow [2023-11-26 12:06:32,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=419, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=254, PETRI_PLACES=77, PETRI_TRANSITIONS=39} [2023-11-26 12:06:32,743 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 35 predicate places. [2023-11-26 12:06:32,743 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 39 transitions, 254 flow [2023-11-26 12:06:32,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:32,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:06:32,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:06:32,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 12:06:32,744 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 12:06:32,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:32,749 INFO L85 PathProgramCache]: Analyzing trace with hash -293951170, now seen corresponding path program 1 times [2023-11-26 12:06:32,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:32,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203807744] [2023-11-26 12:06:32,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:32,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:32,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:32,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:06:32,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:32,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203807744] [2023-11-26 12:06:32,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203807744] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:32,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:32,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:06:32,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763081695] [2023-11-26 12:06:32,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:32,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:06:32,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:32,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:06:32,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:06:32,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 38 [2023-11-26 12:06:32,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 39 transitions, 254 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 12:06:32,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:06:32,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 38 [2023-11-26 12:06:32,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:06:33,263 INFO L124 PetriNetUnfolderBase]: 737/1493 cut-off events. [2023-11-26 12:06:33,264 INFO L125 PetriNetUnfolderBase]: For 2145/2209 co-relation queries the response was YES. [2023-11-26 12:06:33,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3750 conditions, 1493 events. 737/1493 cut-off events. For 2145/2209 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 9909 event pairs, 178 based on Foata normal form. 67/1477 useless extension candidates. Maximal degree in co-relation 3726. Up to 605 conditions per place. [2023-11-26 12:06:33,285 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 26 selfloop transitions, 5 changer transitions 0/54 dead transitions. [2023-11-26 12:06:33,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 54 transitions, 350 flow [2023-11-26 12:06:33,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:06:33,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 12:06:33,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 113 transitions. [2023-11-26 12:06:33,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.743421052631579 [2023-11-26 12:06:33,288 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 113 transitions. [2023-11-26 12:06:33,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 113 transitions. [2023-11-26 12:06:33,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:06:33,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 113 transitions. [2023-11-26 12:06:33,289 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 12:06:33,290 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 12:06:33,290 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 12:06:33,290 INFO L175 Difference]: Start difference. First operand has 77 places, 39 transitions, 254 flow. Second operand 4 states and 113 transitions. [2023-11-26 12:06:33,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 54 transitions, 350 flow [2023-11-26 12:06:33,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 54 transitions, 255 flow, removed 15 selfloop flow, removed 18 redundant places. [2023-11-26 12:06:33,304 INFO L231 Difference]: Finished difference. Result has 60 places, 43 transitions, 197 flow [2023-11-26 12:06:33,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=197, PETRI_PLACES=60, PETRI_TRANSITIONS=43} [2023-11-26 12:06:33,308 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 18 predicate places. [2023-11-26 12:06:33,309 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 43 transitions, 197 flow [2023-11-26 12:06:33,309 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 12:06:33,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:06:33,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:06:33,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 12:06:33,310 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 12:06:33,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:33,311 INFO L85 PathProgramCache]: Analyzing trace with hash 2047662535, now seen corresponding path program 1 times [2023-11-26 12:06:33,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:33,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572952333] [2023-11-26 12:06:33,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:33,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:33,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:33,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:06:33,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:33,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572952333] [2023-11-26 12:06:33,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572952333] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:33,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:33,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 12:06:33,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860139398] [2023-11-26 12:06:33,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:33,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 12:06:33,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:33,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:06:33,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:06:33,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 38 [2023-11-26 12:06:33,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 43 transitions, 197 flow. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:33,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:06:33,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 38 [2023-11-26 12:06:33,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:06:33,801 INFO L124 PetriNetUnfolderBase]: 634/1272 cut-off events. [2023-11-26 12:06:33,801 INFO L125 PetriNetUnfolderBase]: For 615/1024 co-relation queries the response was YES. [2023-11-26 12:06:33,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3248 conditions, 1272 events. 634/1272 cut-off events. For 615/1024 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 7827 event pairs, 61 based on Foata normal form. 79/1281 useless extension candidates. Maximal degree in co-relation 3235. Up to 544 conditions per place. [2023-11-26 12:06:33,816 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 33 selfloop transitions, 8 changer transitions 0/64 dead transitions. [2023-11-26 12:06:33,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 64 transitions, 342 flow [2023-11-26 12:06:33,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 12:06:33,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 12:06:33,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 143 transitions. [2023-11-26 12:06:33,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7526315789473684 [2023-11-26 12:06:33,818 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 143 transitions. [2023-11-26 12:06:33,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 143 transitions. [2023-11-26 12:06:33,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:06:33,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 143 transitions. [2023-11-26 12:06:33,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:33,820 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 12:06:33,820 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 12:06:33,820 INFO L175 Difference]: Start difference. First operand has 60 places, 43 transitions, 197 flow. Second operand 5 states and 143 transitions. [2023-11-26 12:06:33,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 64 transitions, 342 flow [2023-11-26 12:06:33,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 64 transitions, 339 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 12:06:33,825 INFO L231 Difference]: Finished difference. Result has 65 places, 47 transitions, 249 flow [2023-11-26 12:06:33,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=249, PETRI_PLACES=65, PETRI_TRANSITIONS=47} [2023-11-26 12:06:33,826 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places. [2023-11-26 12:06:33,826 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 47 transitions, 249 flow [2023-11-26 12:06:33,826 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 12:06:33,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:06:33,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:06:33,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 12:06:33,827 INFO L420 AbstractCegarLoop]: === Iteration 8 === 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 12:06:33,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:33,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1370918908, now seen corresponding path program 1 times [2023-11-26 12:06:33,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:33,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116454233] [2023-11-26 12:06:33,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:33,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:33,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:33,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:06:33,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:33,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116454233] [2023-11-26 12:06:33,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116454233] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:33,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:33,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 12:06:33,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590127002] [2023-11-26 12:06:33,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:33,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:06:33,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:33,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:06:33,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:06:33,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 38 [2023-11-26 12:06:33,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 47 transitions, 249 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 12:06:33,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:06:33,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 38 [2023-11-26 12:06:33,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:06:34,208 INFO L124 PetriNetUnfolderBase]: 514/980 cut-off events. [2023-11-26 12:06:34,208 INFO L125 PetriNetUnfolderBase]: For 1605/2460 co-relation queries the response was YES. [2023-11-26 12:06:34,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3066 conditions, 980 events. 514/980 cut-off events. For 1605/2460 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 5464 event pairs, 25 based on Foata normal form. 74/992 useless extension candidates. Maximal degree in co-relation 3051. Up to 400 conditions per place. [2023-11-26 12:06:34,216 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 32 selfloop transitions, 11 changer transitions 0/66 dead transitions. [2023-11-26 12:06:34,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 66 transitions, 384 flow [2023-11-26 12:06:34,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 12:06:34,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 12:06:34,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 165 transitions. [2023-11-26 12:06:34,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7236842105263158 [2023-11-26 12:06:34,218 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 165 transitions. [2023-11-26 12:06:34,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 165 transitions. [2023-11-26 12:06:34,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:06:34,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 165 transitions. [2023-11-26 12:06:34,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 27.5) internal successors, (165), 6 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:34,220 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 12:06:34,221 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 12:06:34,221 INFO L175 Difference]: Start difference. First operand has 65 places, 47 transitions, 249 flow. Second operand 6 states and 165 transitions. [2023-11-26 12:06:34,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 66 transitions, 384 flow [2023-11-26 12:06:34,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 66 transitions, 358 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-11-26 12:06:34,225 INFO L231 Difference]: Finished difference. Result has 67 places, 48 transitions, 268 flow [2023-11-26 12:06:34,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=268, PETRI_PLACES=67, PETRI_TRANSITIONS=48} [2023-11-26 12:06:34,226 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 25 predicate places. [2023-11-26 12:06:34,227 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 48 transitions, 268 flow [2023-11-26 12:06:34,227 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 12:06:34,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:06:34,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:06:34,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 12:06:34,228 INFO L420 AbstractCegarLoop]: === Iteration 9 === 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 12:06:34,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:34,228 INFO L85 PathProgramCache]: Analyzing trace with hash 2005693696, now seen corresponding path program 1 times [2023-11-26 12:06:34,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:34,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313740291] [2023-11-26 12:06:34,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:34,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:34,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:34,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:06:34,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:34,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313740291] [2023-11-26 12:06:34,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313740291] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:34,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:34,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 12:06:34,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343292352] [2023-11-26 12:06:34,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:34,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:06:34,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:34,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:06:34,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:06:34,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2023-11-26 12:06:34,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 48 transitions, 268 flow. Second operand has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:34,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:06:34,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2023-11-26 12:06:34,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:06:34,681 INFO L124 PetriNetUnfolderBase]: 502/1077 cut-off events. [2023-11-26 12:06:34,682 INFO L125 PetriNetUnfolderBase]: For 2032/2144 co-relation queries the response was YES. [2023-11-26 12:06:34,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3247 conditions, 1077 events. 502/1077 cut-off events. For 2032/2144 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 6764 event pairs, 143 based on Foata normal form. 16/955 useless extension candidates. Maximal degree in co-relation 3233. Up to 472 conditions per place. [2023-11-26 12:06:34,690 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 0 selfloop transitions, 0 changer transitions 73/73 dead transitions. [2023-11-26 12:06:34,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 73 transitions, 446 flow [2023-11-26 12:06:34,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 12:06:34,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-26 12:06:34,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2023-11-26 12:06:34,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6015037593984962 [2023-11-26 12:06:34,692 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 160 transitions. [2023-11-26 12:06:34,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 160 transitions. [2023-11-26 12:06:34,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:06:34,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 160 transitions. [2023-11-26 12:06:34,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:34,694 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 12:06:34,695 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 12:06:34,695 INFO L175 Difference]: Start difference. First operand has 67 places, 48 transitions, 268 flow. Second operand 7 states and 160 transitions. [2023-11-26 12:06:34,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 73 transitions, 446 flow [2023-11-26 12:06:34,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 73 transitions, 422 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-11-26 12:06:34,702 INFO L231 Difference]: Finished difference. Result has 68 places, 0 transitions, 0 flow [2023-11-26 12:06:34,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=68, PETRI_TRANSITIONS=0} [2023-11-26 12:06:34,704 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 26 predicate places. [2023-11-26 12:06:34,704 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 0 transitions, 0 flow [2023-11-26 12:06:34,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:34,707 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-26 12:06:34,707 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-26 12:06:34,708 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-26 12:06:34,708 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-26 12:06:34,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 12:06:34,709 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:06:34,713 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-26 12:06:34,713 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-26 12:06:34,719 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 12:06:34 BasicIcfg [2023-11-26 12:06:34,719 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-26 12:06:34,719 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 12:06:34,720 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 12:06:34,720 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 12:06:34,720 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:06:26" (3/4) ... [2023-11-26 12:06:34,722 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-26 12:06:34,726 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-26 12:06:34,726 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-26 12:06:34,727 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-11-26 12:06:34,732 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 36 nodes and edges [2023-11-26 12:06:34,732 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2023-11-26 12:06:34,732 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-26 12:06:34,732 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-26 12:06:34,813 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05999f7a-99a2-4d1e-b444-4b1d32ed7df7/bin/uautomizer-verify-VRDe98Ueme/witness.graphml [2023-11-26 12:06:34,813 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05999f7a-99a2-4d1e-b444-4b1d32ed7df7/bin/uautomizer-verify-VRDe98Ueme/witness.yml [2023-11-26 12:06:34,813 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 12:06:34,814 INFO L158 Benchmark]: Toolchain (without parser) took 9472.55ms. Allocated memory was 123.7MB in the beginning and 180.4MB in the end (delta: 56.6MB). Free memory was 78.7MB in the beginning and 103.0MB in the end (delta: -24.3MB). Peak memory consumption was 34.3MB. Max. memory is 16.1GB. [2023-11-26 12:06:34,814 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 98.6MB. Free memory is still 50.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 12:06:34,815 INFO L158 Benchmark]: CACSL2BoogieTranslator took 636.87ms. Allocated memory is still 123.7MB. Free memory was 78.4MB in the beginning and 57.8MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-26 12:06:34,815 INFO L158 Benchmark]: Boogie Procedure Inliner took 108.53ms. Allocated memory is still 123.7MB. Free memory was 57.8MB in the beginning and 94.7MB in the end (delta: -36.9MB). Peak memory consumption was 6.9MB. Max. memory is 16.1GB. [2023-11-26 12:06:34,816 INFO L158 Benchmark]: Boogie Preprocessor took 99.62ms. Allocated memory is still 123.7MB. Free memory was 94.7MB in the beginning and 92.3MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 12:06:34,816 INFO L158 Benchmark]: RCFGBuilder took 688.18ms. Allocated memory is still 123.7MB. Free memory was 92.3MB in the beginning and 70.9MB in the end (delta: 21.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-26 12:06:34,817 INFO L158 Benchmark]: TraceAbstraction took 7834.56ms. Allocated memory was 123.7MB in the beginning and 180.4MB in the end (delta: 56.6MB). Free memory was 70.2MB in the beginning and 108.2MB in the end (delta: -38.0MB). Peak memory consumption was 19.0MB. Max. memory is 16.1GB. [2023-11-26 12:06:34,817 INFO L158 Benchmark]: Witness Printer took 94.06ms. Allocated memory is still 180.4MB. Free memory was 108.2MB in the beginning and 103.0MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-26 12:06:34,819 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 98.6MB. Free memory is still 50.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 636.87ms. Allocated memory is still 123.7MB. Free memory was 78.4MB in the beginning and 57.8MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 108.53ms. Allocated memory is still 123.7MB. Free memory was 57.8MB in the beginning and 94.7MB in the end (delta: -36.9MB). Peak memory consumption was 6.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 99.62ms. Allocated memory is still 123.7MB. Free memory was 94.7MB in the beginning and 92.3MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 688.18ms. Allocated memory is still 123.7MB. Free memory was 92.3MB in the beginning and 70.9MB in the end (delta: 21.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 7834.56ms. Allocated memory was 123.7MB in the beginning and 180.4MB in the end (delta: 56.6MB). Free memory was 70.2MB in the beginning and 108.2MB in the end (delta: -38.0MB). Peak memory consumption was 19.0MB. Max. memory is 16.1GB. * Witness Printer took 94.06ms. Allocated memory is still 180.4MB. Free memory was 108.2MB in the beginning and 103.0MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. 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: 7.7s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 445 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 395 mSDsluCounter, 359 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 261 mSDsCounter, 30 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 851 IncrementalHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 30 mSolverCounterUnsat, 98 mSDtfsCounter, 851 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 78 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=457occurred in iteration=4, InterpolantAutomatonStates: 71, 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, 2.3s InterpolantComputationTime, 175 NumberOfCodeBlocks, 175 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 166 ConstructedInterpolants, 0 QuantifiedInterpolants, 808 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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 12:06:34,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05999f7a-99a2-4d1e-b444-4b1d32ed7df7/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE