./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e8769-9bfa-4b98-bb43-35ec7762d7d4/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e8769-9bfa-4b98-bb43-35ec7762d7d4/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e8769-9bfa-4b98-bb43-35ec7762d7d4/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e8769-9bfa-4b98-bb43-35ec7762d7d4/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e8769-9bfa-4b98-bb43-35ec7762d7d4/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e8769-9bfa-4b98-bb43-35ec7762d7d4/bin/uautomizer-verify-aQ6SnzHsRB --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 e136f4ab00a1c93eb400bb9f2a21b2887cfec20e18dff1c5960bc25f16f1bcad --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:21:32,491 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:21:32,552 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e8769-9bfa-4b98-bb43-35ec7762d7d4/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 20:21:32,557 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:21:32,557 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:21:32,582 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:21:32,582 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:21:32,582 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:21:32,583 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:21:32,583 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:21:32,583 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:21:32,583 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:21:32,583 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:21:32,583 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:21:32,583 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:21:32,584 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:21:32,584 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 20:21:32,584 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 20:21:32,584 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:21:32,584 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 20:21:32,584 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:21:32,584 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 20:21:32,584 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:21:32,584 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 20:21:32,585 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 20:21:32,585 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 20:21:32,585 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:21:32,585 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:21:32,585 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:21:32,585 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:21:32,585 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:21:32,585 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:21:32,585 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:21:32,586 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:21:32,586 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:21:32,586 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:21:32,586 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:21:32,586 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:21:32,586 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:21:32,586 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:21:32,586 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 20:21:32,586 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 20:21:32,587 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 20:21:32,587 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 20:21:32,587 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:21:32,587 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:21:32,587 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:21:32,587 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:21:32,587 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_672e8769-9bfa-4b98-bb43-35ec7762d7d4/bin/uautomizer-verify-aQ6SnzHsRB 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 -> e136f4ab00a1c93eb400bb9f2a21b2887cfec20e18dff1c5960bc25f16f1bcad [2024-11-27 20:21:32,954 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:21:32,965 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:21:32,968 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:21:32,970 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:21:32,970 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:21:32,972 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e8769-9bfa-4b98-bb43-35ec7762d7d4/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-11-27 20:21:36,592 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e8769-9bfa-4b98-bb43-35ec7762d7d4/bin/uautomizer-verify-aQ6SnzHsRB/data/ed32e58b8/e6356f6166e94d7f8fc8ed0ef8192541/FLAGeccf26ac5 [2024-11-27 20:21:37,009 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:21:37,011 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e8769-9bfa-4b98-bb43-35ec7762d7d4/sv-benchmarks/c/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-11-27 20:21:37,027 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e8769-9bfa-4b98-bb43-35ec7762d7d4/bin/uautomizer-verify-aQ6SnzHsRB/data/ed32e58b8/e6356f6166e94d7f8fc8ed0ef8192541/FLAGeccf26ac5 [2024-11-27 20:21:37,046 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e8769-9bfa-4b98-bb43-35ec7762d7d4/bin/uautomizer-verify-aQ6SnzHsRB/data/ed32e58b8/e6356f6166e94d7f8fc8ed0ef8192541 [2024-11-27 20:21:37,049 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:21:37,052 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:21:37,054 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:21:37,054 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:21:37,060 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:21:37,061 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:21:37" (1/1) ... [2024-11-27 20:21:37,062 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d966278 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:37, skipping insertion in model container [2024-11-27 20:21:37,063 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:21:37" (1/1) ... [2024-11-27 20:21:37,106 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:21:37,309 WARN L250 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_672e8769-9bfa-4b98-bb43-35ec7762d7d4/sv-benchmarks/c/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2024-11-27 20:21:37,512 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:21:37,523 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:21:37,533 WARN L250 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_672e8769-9bfa-4b98-bb43-35ec7762d7d4/sv-benchmarks/c/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2024-11-27 20:21:37,575 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:21:37,619 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:21:37,619 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:37 WrapperNode [2024-11-27 20:21:37,620 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:21:37,621 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:21:37,621 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:21:37,621 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:21:37,629 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:37" (1/1) ... [2024-11-27 20:21:37,642 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:37" (1/1) ... [2024-11-27 20:21:37,663 INFO L138 Inliner]: procedures = 175, calls = 39, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 58 [2024-11-27 20:21:37,664 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:21:37,664 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:21:37,665 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:21:37,665 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:21:37,675 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:37" (1/1) ... [2024-11-27 20:21:37,676 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:37" (1/1) ... [2024-11-27 20:21:37,680 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:37" (1/1) ... [2024-11-27 20:21:37,713 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-27 20:21:37,714 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:37" (1/1) ... [2024-11-27 20:21:37,714 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:37" (1/1) ... [2024-11-27 20:21:37,725 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:37" (1/1) ... [2024-11-27 20:21:37,726 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:37" (1/1) ... [2024-11-27 20:21:37,728 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:37" (1/1) ... [2024-11-27 20:21:37,730 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:37" (1/1) ... [2024-11-27 20:21:37,731 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:37" (1/1) ... [2024-11-27 20:21:37,733 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:21:37,734 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:21:37,735 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:21:37,735 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:21:37,736 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:37" (1/1) ... [2024-11-27 20:21:37,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:21:37,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e8769-9bfa-4b98-bb43-35ec7762d7d4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:21:37,781 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e8769-9bfa-4b98-bb43-35ec7762d7d4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:21:37,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e8769-9bfa-4b98-bb43-35ec7762d7d4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:21:37,827 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-27 20:21:37,827 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:21:37,828 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-11-27 20:21:37,829 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-11-27 20:21:37,830 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-11-27 20:21:37,830 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-11-27 20:21:37,830 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-11-27 20:21:37,831 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-11-27 20:21:37,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 20:21:37,831 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-27 20:21:37,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:21:37,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:21:37,833 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-27 20:21:37,989 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:21:37,991 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:21:38,244 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-27 20:21:38,245 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:21:38,407 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:21:38,407 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-27 20:21:38,408 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:21:38 BoogieIcfgContainer [2024-11-27 20:21:38,408 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:21:38,411 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:21:38,411 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:21:38,418 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:21:38,419 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:21:37" (1/3) ... [2024-11-27 20:21:38,420 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d4582b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:21:38, skipping insertion in model container [2024-11-27 20:21:38,420 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:37" (2/3) ... [2024-11-27 20:21:38,421 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d4582b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:21:38, skipping insertion in model container [2024-11-27 20:21:38,421 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:21:38" (3/3) ... [2024-11-27 20:21:38,423 INFO L128 eAbstractionObserver]: Analyzing ICFG safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-11-27 20:21:38,442 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:21:38,447 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i that has 4 procedures, 37 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-27 20:21:38,447 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-27 20:21:38,534 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-27 20:21:38,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 37 transitions, 86 flow [2024-11-27 20:21:38,649 INFO L124 PetriNetUnfolderBase]: 1/34 cut-off events. [2024-11-27 20:21:38,656 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-27 20:21:38,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 34 events. 1/34 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 56 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2024-11-27 20:21:38,664 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 37 transitions, 86 flow [2024-11-27 20:21:38,668 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 31 transitions, 71 flow [2024-11-27 20:21:38,683 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:21:38,698 INFO L333 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, 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;@779ac2c1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:21:38,698 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-27 20:21:38,713 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-27 20:21:38,713 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2024-11-27 20:21:38,713 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-27 20:21:38,714 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:21:38,714 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:21:38,715 INFO L396 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)] === [2024-11-27 20:21:38,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:21:38,722 INFO L85 PathProgramCache]: Analyzing trace with hash -295792102, now seen corresponding path program 1 times [2024-11-27 20:21:38,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:21:38,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012244140] [2024-11-27 20:21:38,736 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:21:38,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:21:38,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:21:39,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:21:39,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:21:39,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012244140] [2024-11-27 20:21:39,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012244140] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:21:39,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:21:39,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:21:39,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805744362] [2024-11-27 20:21:39,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:21:39,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:21:39,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:21:39,458 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:21:39,459 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:21:39,481 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 37 [2024-11-27 20:21:39,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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) [2024-11-27 20:21:39,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:21:39,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 37 [2024-11-27 20:21:39,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:21:39,818 INFO L124 PetriNetUnfolderBase]: 291/590 cut-off events. [2024-11-27 20:21:39,818 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-11-27 20:21:39,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1096 conditions, 590 events. 291/590 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3210 event pairs, 58 based on Foata normal form. 27/608 useless extension candidates. Maximal degree in co-relation 1085. Up to 236 conditions per place. [2024-11-27 20:21:39,827 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 25 selfloop transitions, 5 changer transitions 1/46 dead transitions. [2024-11-27 20:21:39,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 46 transitions, 169 flow [2024-11-27 20:21:39,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:21:39,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 20:21:39,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2024-11-27 20:21:39,848 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7364864864864865 [2024-11-27 20:21:39,850 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 71 flow. Second operand 4 states and 109 transitions. [2024-11-27 20:21:39,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 46 transitions, 169 flow [2024-11-27 20:21:39,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 46 transitions, 164 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-27 20:21:39,860 INFO L231 Difference]: Finished difference. Result has 43 places, 34 transitions, 102 flow [2024-11-27 20:21:39,864 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=102, PETRI_PLACES=43, PETRI_TRANSITIONS=34} [2024-11-27 20:21:39,871 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 2 predicate places. [2024-11-27 20:21:39,871 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 34 transitions, 102 flow [2024-11-27 20:21:39,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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) [2024-11-27 20:21:39,872 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:21:39,872 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:21:39,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 20:21:39,873 INFO L396 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)] === [2024-11-27 20:21:39,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:21:39,876 INFO L85 PathProgramCache]: Analyzing trace with hash -942165364, now seen corresponding path program 1 times [2024-11-27 20:21:39,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:21:39,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495035191] [2024-11-27 20:21:39,876 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:21:39,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:21:39,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:21:40,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:21:40,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:21:40,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495035191] [2024-11-27 20:21:40,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495035191] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:21:40,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:21:40,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:21:40,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431350483] [2024-11-27 20:21:40,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:21:40,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:21:40,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:21:40,236 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:21:40,236 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:21:40,259 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 37 [2024-11-27 20:21:40,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 34 transitions, 102 flow. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:21:40,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:21:40,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 37 [2024-11-27 20:21:40,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:21:40,560 INFO L124 PetriNetUnfolderBase]: 249/505 cut-off events. [2024-11-27 20:21:40,561 INFO L125 PetriNetUnfolderBase]: For 173/176 co-relation queries the response was YES. [2024-11-27 20:21:40,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1183 conditions, 505 events. 249/505 cut-off events. For 173/176 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2461 event pairs, 15 based on Foata normal form. 28/525 useless extension candidates. Maximal degree in co-relation 1171. Up to 188 conditions per place. [2024-11-27 20:21:40,568 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 31 selfloop transitions, 8 changer transitions 1/55 dead transitions. [2024-11-27 20:21:40,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 55 transitions, 245 flow [2024-11-27 20:21:40,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:21:40,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 20:21:40,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 137 transitions. [2024-11-27 20:21:40,571 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7405405405405405 [2024-11-27 20:21:40,571 INFO L175 Difference]: Start difference. First operand has 43 places, 34 transitions, 102 flow. Second operand 5 states and 137 transitions. [2024-11-27 20:21:40,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 55 transitions, 245 flow [2024-11-27 20:21:40,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 55 transitions, 235 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-27 20:21:40,575 INFO L231 Difference]: Finished difference. Result has 47 places, 37 transitions, 142 flow [2024-11-27 20:21:40,575 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=142, PETRI_PLACES=47, PETRI_TRANSITIONS=37} [2024-11-27 20:21:40,576 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 6 predicate places. [2024-11-27 20:21:40,576 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 37 transitions, 142 flow [2024-11-27 20:21:40,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:21:40,577 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:21:40,577 INFO L206 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] [2024-11-27 20:21:40,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 20:21:40,577 INFO L396 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)] === [2024-11-27 20:21:40,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:21:40,578 INFO L85 PathProgramCache]: Analyzing trace with hash -80360774, now seen corresponding path program 1 times [2024-11-27 20:21:40,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:21:40,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807686285] [2024-11-27 20:21:40,579 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:21:40,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:21:40,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:21:40,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:21:40,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:21:40,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807686285] [2024-11-27 20:21:40,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807686285] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:21:40,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:21:40,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:21:40,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579549779] [2024-11-27 20:21:40,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:21:40,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:21:40,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:21:40,908 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:21:40,909 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:21:40,917 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 37 [2024-11-27 20:21:40,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 37 transitions, 142 flow. Second operand has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 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) [2024-11-27 20:21:40,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:21:40,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 37 [2024-11-27 20:21:40,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:21:41,178 INFO L124 PetriNetUnfolderBase]: 174/340 cut-off events. [2024-11-27 20:21:41,178 INFO L125 PetriNetUnfolderBase]: For 358/364 co-relation queries the response was YES. [2024-11-27 20:21:41,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 939 conditions, 340 events. 174/340 cut-off events. For 358/364 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1273 event pairs, 6 based on Foata normal form. 24/356 useless extension candidates. Maximal degree in co-relation 925. Up to 108 conditions per place. [2024-11-27 20:21:41,187 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 29 selfloop transitions, 11 changer transitions 1/56 dead transitions. [2024-11-27 20:21:41,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 56 transitions, 272 flow [2024-11-27 20:21:41,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:21:41,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-27 20:21:41,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 157 transitions. [2024-11-27 20:21:41,192 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7072072072072072 [2024-11-27 20:21:41,192 INFO L175 Difference]: Start difference. First operand has 47 places, 37 transitions, 142 flow. Second operand 6 states and 157 transitions. [2024-11-27 20:21:41,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 56 transitions, 272 flow [2024-11-27 20:21:41,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 56 transitions, 247 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-27 20:21:41,201 INFO L231 Difference]: Finished difference. Result has 50 places, 37 transitions, 156 flow [2024-11-27 20:21:41,202 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=156, PETRI_PLACES=50, PETRI_TRANSITIONS=37} [2024-11-27 20:21:41,202 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 9 predicate places. [2024-11-27 20:21:41,202 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 37 transitions, 156 flow [2024-11-27 20:21:41,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 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) [2024-11-27 20:21:41,203 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:21:41,203 INFO L206 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] [2024-11-27 20:21:41,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 20:21:41,208 INFO L396 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)] === [2024-11-27 20:21:41,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:21:41,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1224161521, now seen corresponding path program 1 times [2024-11-27 20:21:41,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:21:41,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157346389] [2024-11-27 20:21:41,209 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:21:41,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:21:41,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:21:41,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:21:41,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:21:41,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157346389] [2024-11-27 20:21:41,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157346389] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:21:41,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:21:41,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:21:41,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686892396] [2024-11-27 20:21:41,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:21:41,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 20:21:41,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:21:41,612 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 20:21:41,612 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:21:41,654 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2024-11-27 20:21:41,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 37 transitions, 156 flow. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 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) [2024-11-27 20:21:41,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:21:41,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2024-11-27 20:21:41,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:21:41,981 INFO L124 PetriNetUnfolderBase]: 313/636 cut-off events. [2024-11-27 20:21:41,985 INFO L125 PetriNetUnfolderBase]: For 385/396 co-relation queries the response was YES. [2024-11-27 20:21:41,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1521 conditions, 636 events. 313/636 cut-off events. For 385/396 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3271 event pairs, 137 based on Foata normal form. 8/581 useless extension candidates. Maximal degree in co-relation 1506. Up to 177 conditions per place. [2024-11-27 20:21:41,991 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 20 selfloop transitions, 3 changer transitions 14/56 dead transitions. [2024-11-27 20:21:41,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 56 transitions, 276 flow [2024-11-27 20:21:41,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:21:41,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-27 20:21:41,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-11-27 20:21:41,997 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6306306306306306 [2024-11-27 20:21:41,997 INFO L175 Difference]: Start difference. First operand has 50 places, 37 transitions, 156 flow. Second operand 6 states and 140 transitions. [2024-11-27 20:21:41,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 56 transitions, 276 flow [2024-11-27 20:21:42,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 56 transitions, 212 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-11-27 20:21:42,009 INFO L231 Difference]: Finished difference. Result has 50 places, 37 transitions, 114 flow [2024-11-27 20:21:42,010 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=114, PETRI_PLACES=50, PETRI_TRANSITIONS=37} [2024-11-27 20:21:42,011 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 9 predicate places. [2024-11-27 20:21:42,012 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 37 transitions, 114 flow [2024-11-27 20:21:42,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 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) [2024-11-27 20:21:42,012 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:21:42,013 INFO L206 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] [2024-11-27 20:21:42,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 20:21:42,013 INFO L396 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)] === [2024-11-27 20:21:42,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:21:42,014 INFO L85 PathProgramCache]: Analyzing trace with hash 126961507, now seen corresponding path program 2 times [2024-11-27 20:21:42,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:21:42,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052915777] [2024-11-27 20:21:42,017 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:21:42,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:21:42,056 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 20:21:42,058 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:21:42,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:21:42,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:21:42,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052915777] [2024-11-27 20:21:42,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052915777] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:21:42,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:21:42,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:21:42,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173235776] [2024-11-27 20:21:42,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:21:42,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:21:42,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:21:42,325 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:21:42,325 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:21:42,359 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 37 [2024-11-27 20:21:42,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 37 transitions, 114 flow. Second operand has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 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) [2024-11-27 20:21:42,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:21:42,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 37 [2024-11-27 20:21:42,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:21:42,628 INFO L124 PetriNetUnfolderBase]: 184/402 cut-off events. [2024-11-27 20:21:42,628 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-11-27 20:21:42,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 829 conditions, 402 events. 184/402 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1747 event pairs, 71 based on Foata normal form. 8/362 useless extension candidates. Maximal degree in co-relation 815. Up to 139 conditions per place. [2024-11-27 20:21:42,633 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 18 selfloop transitions, 3 changer transitions 14/56 dead transitions. [2024-11-27 20:21:42,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 56 transitions, 228 flow [2024-11-27 20:21:42,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:21:42,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-27 20:21:42,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2024-11-27 20:21:42,638 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6756756756756757 [2024-11-27 20:21:42,638 INFO L175 Difference]: Start difference. First operand has 50 places, 37 transitions, 114 flow. Second operand 6 states and 150 transitions. [2024-11-27 20:21:42,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 56 transitions, 228 flow [2024-11-27 20:21:42,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 56 transitions, 212 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-11-27 20:21:42,645 INFO L231 Difference]: Finished difference. Result has 51 places, 37 transitions, 116 flow [2024-11-27 20:21:42,646 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=116, PETRI_PLACES=51, PETRI_TRANSITIONS=37} [2024-11-27 20:21:42,648 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 10 predicate places. [2024-11-27 20:21:42,648 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 37 transitions, 116 flow [2024-11-27 20:21:42,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 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) [2024-11-27 20:21:42,648 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:21:42,649 INFO L206 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] [2024-11-27 20:21:42,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 20:21:42,649 INFO L396 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)] === [2024-11-27 20:21:42,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:21:42,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1855857059, now seen corresponding path program 3 times [2024-11-27 20:21:42,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:21:42,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385660477] [2024-11-27 20:21:42,654 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:21:42,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:21:42,690 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-27 20:21:42,693 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:21:43,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:21:43,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:21:43,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385660477] [2024-11-27 20:21:43,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385660477] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:21:43,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:21:43,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:21:43,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845587616] [2024-11-27 20:21:43,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:21:43,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:21:43,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:21:43,015 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:21:43,015 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:21:43,064 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2024-11-27 20:21:43,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 37 transitions, 116 flow. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 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) [2024-11-27 20:21:43,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:21:43,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2024-11-27 20:21:43,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:21:43,303 INFO L124 PetriNetUnfolderBase]: 116/262 cut-off events. [2024-11-27 20:21:43,303 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2024-11-27 20:21:43,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 541 conditions, 262 events. 116/262 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 967 event pairs, 26 based on Foata normal form. 8/251 useless extension candidates. Maximal degree in co-relation 535. Up to 98 conditions per place. [2024-11-27 20:21:43,305 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 0 selfloop transitions, 0 changer transitions 47/47 dead transitions. [2024-11-27 20:21:43,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 47 transitions, 194 flow [2024-11-27 20:21:43,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 20:21:43,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-27 20:21:43,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 149 transitions. [2024-11-27 20:21:43,308 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5752895752895753 [2024-11-27 20:21:43,308 INFO L175 Difference]: Start difference. First operand has 51 places, 37 transitions, 116 flow. Second operand 7 states and 149 transitions. [2024-11-27 20:21:43,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 47 transitions, 194 flow [2024-11-27 20:21:43,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 47 transitions, 184 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-11-27 20:21:43,311 INFO L231 Difference]: Finished difference. Result has 49 places, 0 transitions, 0 flow [2024-11-27 20:21:43,311 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=49, PETRI_TRANSITIONS=0} [2024-11-27 20:21:43,312 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 8 predicate places. [2024-11-27 20:21:43,312 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 0 transitions, 0 flow [2024-11-27 20:21:43,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 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) [2024-11-27 20:21:43,316 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2024-11-27 20:21:43,316 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2024-11-27 20:21:43,317 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-11-27 20:21:43,317 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-11-27 20:21:43,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 20:21:43,318 INFO L422 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1] [2024-11-27 20:21:43,322 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-27 20:21:43,323 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-27 20:21:43,330 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 08:21:43 BasicIcfg [2024-11-27 20:21:43,330 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-27 20:21:43,331 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-27 20:21:43,331 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-27 20:21:43,331 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-27 20:21:43,332 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:21:38" (3/4) ... [2024-11-27 20:21:43,335 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-27 20:21:43,340 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2024-11-27 20:21:43,340 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2024-11-27 20:21:43,340 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2024-11-27 20:21:43,345 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 35 nodes and edges [2024-11-27 20:21:43,346 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-11-27 20:21:43,346 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-27 20:21:43,346 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-27 20:21:43,441 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e8769-9bfa-4b98-bb43-35ec7762d7d4/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-27 20:21:43,441 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e8769-9bfa-4b98-bb43-35ec7762d7d4/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-27 20:21:43,441 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-27 20:21:43,443 INFO L158 Benchmark]: Toolchain (without parser) took 6391.30ms. Allocated memory was 142.6MB in the beginning and 427.8MB in the end (delta: 285.2MB). Free memory was 117.5MB in the beginning and 333.0MB in the end (delta: -215.5MB). Peak memory consumption was 64.2MB. Max. memory is 16.1GB. [2024-11-27 20:21:43,443 INFO L158 Benchmark]: CDTParser took 0.56ms. Allocated memory is still 142.6MB. Free memory is still 80.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:21:43,444 INFO L158 Benchmark]: CACSL2BoogieTranslator took 566.75ms. Allocated memory is still 142.6MB. Free memory was 117.3MB in the beginning and 97.0MB in the end (delta: 20.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-27 20:21:43,444 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.79ms. Allocated memory is still 142.6MB. Free memory was 97.0MB in the beginning and 95.3MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:21:43,444 INFO L158 Benchmark]: Boogie Preprocessor took 69.27ms. Allocated memory is still 142.6MB. Free memory was 95.0MB in the beginning and 93.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:21:43,445 INFO L158 Benchmark]: RCFGBuilder took 673.79ms. Allocated memory is still 142.6MB. Free memory was 93.5MB in the beginning and 75.8MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-27 20:21:43,445 INFO L158 Benchmark]: TraceAbstraction took 4919.43ms. Allocated memory was 142.6MB in the beginning and 427.8MB in the end (delta: 285.2MB). Free memory was 75.3MB in the beginning and 337.2MB in the end (delta: -261.9MB). Peak memory consumption was 22.3MB. Max. memory is 16.1GB. [2024-11-27 20:21:43,446 INFO L158 Benchmark]: Witness Printer took 110.64ms. Allocated memory is still 427.8MB. Free memory was 337.2MB in the beginning and 333.0MB in the end (delta: 4.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:21:43,448 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.56ms. Allocated memory is still 142.6MB. Free memory is still 80.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 566.75ms. Allocated memory is still 142.6MB. Free memory was 117.3MB in the beginning and 97.0MB in the end (delta: 20.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.79ms. Allocated memory is still 142.6MB. Free memory was 97.0MB in the beginning and 95.3MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 69.27ms. Allocated memory is still 142.6MB. Free memory was 95.0MB in the beginning and 93.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 673.79ms. Allocated memory is still 142.6MB. Free memory was 93.5MB in the beginning and 75.8MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 4919.43ms. Allocated memory was 142.6MB in the beginning and 427.8MB in the end (delta: 285.2MB). Free memory was 75.3MB in the beginning and 337.2MB in the end (delta: -261.9MB). Peak memory consumption was 22.3MB. Max. memory is 16.1GB. * Witness Printer took 110.64ms. Allocated memory is still 427.8MB. Free memory was 337.2MB in the beginning and 333.0MB in the end (delta: 4.2MB). There was no memory consumed. 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, 60 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.7s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 253 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 224 mSDsluCounter, 118 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 99 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 454 IncrementalHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 19 mSDtfsCounter, 454 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=156occurred in iteration=3, InterpolantAutomatonStates: 34, 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, 2.0s InterpolantComputationTime, 139 NumberOfCodeBlocks, 139 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 133 ConstructedInterpolants, 0 QuantifiedInterpolants, 565 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-27 20:21:43,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e8769-9bfa-4b98-bb43-35ec7762d7d4/bin/uautomizer-verify-aQ6SnzHsRB/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