./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe027_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_c93e4c90-9fb2-4e17-b338-e93dcd45d7c8/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c93e4c90-9fb2-4e17-b338-e93dcd45d7c8/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c93e4c90-9fb2-4e17-b338-e93dcd45d7c8/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c93e4c90-9fb2-4e17-b338-e93dcd45d7c8/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c93e4c90-9fb2-4e17-b338-e93dcd45d7c8/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c93e4c90-9fb2-4e17-b338-e93dcd45d7c8/bin/uautomizer-verify-84ZbGMXZE1 --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 7912270168edfe57ed71790473a28594e3bc48002f5ead86961705c042bbf781 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 06:02:55,191 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 06:02:55,245 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c93e4c90-9fb2-4e17-b338-e93dcd45d7c8/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 06:02:55,251 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 06:02:55,251 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 06:02:55,272 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 06:02:55,272 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 06:02:55,273 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 06:02:55,273 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 06:02:55,273 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 06:02:55,273 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 06:02:55,273 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 06:02:55,274 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 06:02:55,274 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 06:02:55,274 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 06:02:55,274 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 06:02:55,274 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 06:02:55,274 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 06:02:55,274 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 06:02:55,274 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 06:02:55,274 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 06:02:55,275 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 06:02:55,275 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 06:02:55,275 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 06:02:55,275 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 06:02:55,275 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 06:02:55,275 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 06:02:55,275 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 06:02:55,275 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 06:02:55,275 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 06:02:55,275 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 06:02:55,275 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 06:02:55,276 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:02:55,276 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 06:02:55,276 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 06:02:55,276 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 06:02:55,276 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 06:02:55,276 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:02:55,276 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 06:02:55,276 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 06:02:55,276 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 06:02:55,277 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 06:02:55,277 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 06:02:55,277 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 06:02:55,277 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 06:02:55,277 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 06:02:55,277 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 06:02:55,277 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 06:02:55,277 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_c93e4c90-9fb2-4e17-b338-e93dcd45d7c8/bin/uautomizer-verify-84ZbGMXZE1 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 -> 7912270168edfe57ed71790473a28594e3bc48002f5ead86961705c042bbf781 [2024-12-02 06:02:55,469 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 06:02:55,475 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 06:02:55,478 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 06:02:55,478 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 06:02:55,479 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 06:02:55,480 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c93e4c90-9fb2-4e17-b338-e93dcd45d7c8/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-12-02 06:02:58,077 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c93e4c90-9fb2-4e17-b338-e93dcd45d7c8/bin/uautomizer-verify-84ZbGMXZE1/data/da3fbb75b/2182be85e7fa489b9f40d43e76a33a0a/FLAG37bac3443 [2024-12-02 06:02:58,307 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 06:02:58,308 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c93e4c90-9fb2-4e17-b338-e93dcd45d7c8/sv-benchmarks/c/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-12-02 06:02:58,321 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c93e4c90-9fb2-4e17-b338-e93dcd45d7c8/bin/uautomizer-verify-84ZbGMXZE1/data/da3fbb75b/2182be85e7fa489b9f40d43e76a33a0a/FLAG37bac3443 [2024-12-02 06:02:58,638 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c93e4c90-9fb2-4e17-b338-e93dcd45d7c8/bin/uautomizer-verify-84ZbGMXZE1/data/da3fbb75b/2182be85e7fa489b9f40d43e76a33a0a [2024-12-02 06:02:58,640 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 06:02:58,641 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 06:02:58,642 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 06:02:58,642 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 06:02:58,645 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 06:02:58,646 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:02:58" (1/1) ... [2024-12-02 06:02:58,646 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5315d51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:02:58, skipping insertion in model container [2024-12-02 06:02:58,646 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:02:58" (1/1) ... [2024-12-02 06:02:58,674 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 06:02:58,820 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_c93e4c90-9fb2-4e17-b338-e93dcd45d7c8/sv-benchmarks/c/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2024-12-02 06:02:58,977 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 06:02:58,984 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 06:02:58,993 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_c93e4c90-9fb2-4e17-b338-e93dcd45d7c8/sv-benchmarks/c/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2024-12-02 06:02:59,023 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 06:02:59,050 INFO L204 MainTranslator]: Completed translation [2024-12-02 06:02:59,050 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:02:59 WrapperNode [2024-12-02 06:02:59,051 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 06:02:59,051 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 06:02:59,051 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 06:02:59,051 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 06:02:59,058 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:02:59" (1/1) ... [2024-12-02 06:02:59,067 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:02:59" (1/1) ... [2024-12-02 06:02:59,083 INFO L138 Inliner]: procedures = 176, calls = 46, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 66 [2024-12-02 06:02:59,083 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 06:02:59,084 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 06:02:59,084 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 06:02:59,084 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 06:02:59,090 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:02:59" (1/1) ... [2024-12-02 06:02:59,091 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:02:59" (1/1) ... [2024-12-02 06:02:59,093 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:02:59" (1/1) ... [2024-12-02 06:02:59,107 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]. [2024-12-02 06:02:59,107 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:02:59" (1/1) ... [2024-12-02 06:02:59,107 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:02:59" (1/1) ... [2024-12-02 06:02:59,112 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:02:59" (1/1) ... [2024-12-02 06:02:59,113 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:02:59" (1/1) ... [2024-12-02 06:02:59,115 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:02:59" (1/1) ... [2024-12-02 06:02:59,117 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:02:59" (1/1) ... [2024-12-02 06:02:59,118 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:02:59" (1/1) ... [2024-12-02 06:02:59,120 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 06:02:59,121 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 06:02:59,121 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 06:02:59,121 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 06:02:59,122 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:02:59" (1/1) ... [2024-12-02 06:02:59,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:02:59,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c93e4c90-9fb2-4e17-b338-e93dcd45d7c8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:02:59,147 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c93e4c90-9fb2-4e17-b338-e93dcd45d7c8/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 06:02:59,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c93e4c90-9fb2-4e17-b338-e93dcd45d7c8/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 06:02:59,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-12-02 06:02:59,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 06:02:59,169 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-12-02 06:02:59,169 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-12-02 06:02:59,169 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-12-02 06:02:59,169 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-12-02 06:02:59,169 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-12-02 06:02:59,169 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-12-02 06:02:59,169 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-12-02 06:02:59,170 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-12-02 06:02:59,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 06:02:59,170 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-12-02 06:02:59,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 06:02:59,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 06:02:59,171 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-12-02 06:02:59,268 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 06:02:59,269 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 06:02:59,400 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-12-02 06:02:59,400 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 06:02:59,471 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 06:02:59,471 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-12-02 06:02:59,471 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:02:59 BoogieIcfgContainer [2024-12-02 06:02:59,472 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 06:02:59,474 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 06:02:59,474 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 06:02:59,479 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 06:02:59,479 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:02:58" (1/3) ... [2024-12-02 06:02:59,480 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@328890a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:02:59, skipping insertion in model container [2024-12-02 06:02:59,480 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:02:59" (2/3) ... [2024-12-02 06:02:59,480 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@328890a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:02:59, skipping insertion in model container [2024-12-02 06:02:59,480 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:02:59" (3/3) ... [2024-12-02 06:02:59,481 INFO L128 eAbstractionObserver]: Analyzing ICFG safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-12-02 06:02:59,497 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 06:02:59,498 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i that has 5 procedures, 45 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-12-02 06:02:59,499 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-12-02 06:02:59,547 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-12-02 06:02:59,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 45 transitions, 106 flow [2024-12-02 06:02:59,620 INFO L124 PetriNetUnfolderBase]: 1/41 cut-off events. [2024-12-02 06:02:59,622 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 06:02:59,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 41 events. 1/41 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 77 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-12-02 06:02:59,625 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 45 transitions, 106 flow [2024-12-02 06:02:59,628 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 38 transitions, 88 flow [2024-12-02 06:02:59,635 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 06:02:59,646 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;@6a158651, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 06:02:59,646 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-12-02 06:02:59,657 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 06:02:59,657 INFO L124 PetriNetUnfolderBase]: 0/37 cut-off events. [2024-12-02 06:02:59,657 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 06:02:59,658 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 06:02:59,658 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:02:59,659 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 2 more)] === [2024-12-02 06:02:59,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:02:59,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1328358322, now seen corresponding path program 1 times [2024-12-02 06:02:59,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:02:59,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574193371] [2024-12-02 06:02:59,669 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:02:59,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:02:59,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:03:00,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:03:00,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:03:00,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574193371] [2024-12-02 06:03:00,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574193371] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:03:00,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:03:00,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 06:03:00,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524634603] [2024-12-02 06:03:00,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:03:00,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 06:03:00,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:03:00,152 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 06:03:00,153 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:03:00,183 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 45 [2024-12-02 06:03:00,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 38 transitions, 88 flow. Second operand has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 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) [2024-12-02 06:03:00,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 06:03:00,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 45 [2024-12-02 06:03:00,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 06:03:00,642 INFO L124 PetriNetUnfolderBase]: 1275/2167 cut-off events. [2024-12-02 06:03:00,642 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-12-02 06:03:00,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4127 conditions, 2167 events. 1275/2167 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 14045 event pairs, 757 based on Foata normal form. 64/2202 useless extension candidates. Maximal degree in co-relation 4115. Up to 1441 conditions per place. [2024-12-02 06:03:00,661 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 30 selfloop transitions, 3 changer transitions 27/77 dead transitions. [2024-12-02 06:03:00,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 77 transitions, 295 flow [2024-12-02 06:03:00,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 06:03:00,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 06:03:00,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 209 transitions. [2024-12-02 06:03:00,675 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6634920634920635 [2024-12-02 06:03:00,677 INFO L175 Difference]: Start difference. First operand has 51 places, 38 transitions, 88 flow. Second operand 7 states and 209 transitions. [2024-12-02 06:03:00,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 77 transitions, 295 flow [2024-12-02 06:03:00,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 77 transitions, 288 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-12-02 06:03:00,684 INFO L231 Difference]: Finished difference. Result has 58 places, 40 transitions, 119 flow [2024-12-02 06:03:00,687 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=119, PETRI_PLACES=58, PETRI_TRANSITIONS=40} [2024-12-02 06:03:00,690 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 7 predicate places. [2024-12-02 06:03:00,690 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 40 transitions, 119 flow [2024-12-02 06:03:00,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 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) [2024-12-02 06:03:00,691 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 06:03:00,691 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:03:00,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 06:03:00,691 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 2 more)] === [2024-12-02 06:03:00,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:03:00,692 INFO L85 PathProgramCache]: Analyzing trace with hash -653206641, now seen corresponding path program 1 times [2024-12-02 06:03:00,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:03:00,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180936927] [2024-12-02 06:03:00,692 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:03:00,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:03:00,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:03:00,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:03:00,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:03:00,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180936927] [2024-12-02 06:03:00,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180936927] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:03:00,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:03:00,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 06:03:00,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879702646] [2024-12-02 06:03:00,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:03:00,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 06:03:00,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:03:00,882 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 06:03:00,882 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:03:00,897 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 45 [2024-12-02 06:03:00,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 40 transitions, 119 flow. Second operand has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 states have internal predecessors, (140), 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) [2024-12-02 06:03:00,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 06:03:00,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 45 [2024-12-02 06:03:00,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 06:03:01,235 INFO L124 PetriNetUnfolderBase]: 1115/1925 cut-off events. [2024-12-02 06:03:01,235 INFO L125 PetriNetUnfolderBase]: For 1030/1030 co-relation queries the response was YES. [2024-12-02 06:03:01,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4552 conditions, 1925 events. 1115/1925 cut-off events. For 1030/1030 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 12709 event pairs, 211 based on Foata normal form. 48/1918 useless extension candidates. Maximal degree in co-relation 4537. Up to 1141 conditions per place. [2024-12-02 06:03:01,246 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 28 selfloop transitions, 3 changer transitions 25/73 dead transitions. [2024-12-02 06:03:01,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 73 transitions, 321 flow [2024-12-02 06:03:01,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 06:03:01,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 06:03:01,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 204 transitions. [2024-12-02 06:03:01,249 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6476190476190476 [2024-12-02 06:03:01,249 INFO L175 Difference]: Start difference. First operand has 58 places, 40 transitions, 119 flow. Second operand 7 states and 204 transitions. [2024-12-02 06:03:01,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 73 transitions, 321 flow [2024-12-02 06:03:01,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 73 transitions, 304 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-12-02 06:03:01,260 INFO L231 Difference]: Finished difference. Result has 62 places, 40 transitions, 129 flow [2024-12-02 06:03:01,260 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=129, PETRI_PLACES=62, PETRI_TRANSITIONS=40} [2024-12-02 06:03:01,260 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 11 predicate places. [2024-12-02 06:03:01,260 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 40 transitions, 129 flow [2024-12-02 06:03:01,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 states have internal predecessors, (140), 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) [2024-12-02 06:03:01,261 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 06:03:01,261 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:03:01,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 06:03:01,261 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 2 more)] === [2024-12-02 06:03:01,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:03:01,262 INFO L85 PathProgramCache]: Analyzing trace with hash -328127249, now seen corresponding path program 1 times [2024-12-02 06:03:01,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:03:01,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296047429] [2024-12-02 06:03:01,262 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:03:01,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:03:01,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:03:01,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:03:01,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:03:01,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296047429] [2024-12-02 06:03:01,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296047429] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:03:01,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:03:01,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 06:03:01,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440550569] [2024-12-02 06:03:01,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:03:01,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 06:03:01,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:03:01,430 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 06:03:01,430 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:03:01,443 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 45 [2024-12-02 06:03:01,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 40 transitions, 129 flow. Second operand has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 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) [2024-12-02 06:03:01,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 06:03:01,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 45 [2024-12-02 06:03:01,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 06:03:02,086 INFO L124 PetriNetUnfolderBase]: 2085/3511 cut-off events. [2024-12-02 06:03:02,086 INFO L125 PetriNetUnfolderBase]: For 2743/2743 co-relation queries the response was YES. [2024-12-02 06:03:02,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8442 conditions, 3511 events. 2085/3511 cut-off events. For 2743/2743 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 23514 event pairs, 229 based on Foata normal form. 90/3558 useless extension candidates. Maximal degree in co-relation 8423. Up to 1577 conditions per place. [2024-12-02 06:03:02,109 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 55 selfloop transitions, 13 changer transitions 58/142 dead transitions. [2024-12-02 06:03:02,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 142 transitions, 727 flow [2024-12-02 06:03:02,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 06:03:02,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-12-02 06:03:02,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 388 transitions. [2024-12-02 06:03:02,111 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6632478632478632 [2024-12-02 06:03:02,112 INFO L175 Difference]: Start difference. First operand has 62 places, 40 transitions, 129 flow. Second operand 13 states and 388 transitions. [2024-12-02 06:03:02,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 142 transitions, 727 flow [2024-12-02 06:03:02,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 142 transitions, 681 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-12-02 06:03:02,131 INFO L231 Difference]: Finished difference. Result has 75 places, 50 transitions, 258 flow [2024-12-02 06:03:02,131 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=258, PETRI_PLACES=75, PETRI_TRANSITIONS=50} [2024-12-02 06:03:02,132 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 24 predicate places. [2024-12-02 06:03:02,132 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 50 transitions, 258 flow [2024-12-02 06:03:02,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 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) [2024-12-02 06:03:02,132 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 06:03:02,132 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:03:02,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 06:03:02,132 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 2 more)] === [2024-12-02 06:03:02,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:03:02,133 INFO L85 PathProgramCache]: Analyzing trace with hash 842735000, now seen corresponding path program 1 times [2024-12-02 06:03:02,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:03:02,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870569646] [2024-12-02 06:03:02,133 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:03:02,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:03:02,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:03:02,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:03:02,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:03:02,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870569646] [2024-12-02 06:03:02,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870569646] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:03:02,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:03:02,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 06:03:02,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183857060] [2024-12-02 06:03:02,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:03:02,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 06:03:02,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:03:02,291 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 06:03:02,291 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:03:02,310 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 45 [2024-12-02 06:03:02,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 50 transitions, 258 flow. Second operand has 6 states, 6 states have (on average 23.5) internal successors, (141), 6 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:03:02,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 06:03:02,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 45 [2024-12-02 06:03:02,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 06:03:02,628 INFO L124 PetriNetUnfolderBase]: 1579/2816 cut-off events. [2024-12-02 06:03:02,628 INFO L125 PetriNetUnfolderBase]: For 11125/11155 co-relation queries the response was YES. [2024-12-02 06:03:02,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10294 conditions, 2816 events. 1579/2816 cut-off events. For 11125/11155 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 20112 event pairs, 573 based on Foata normal form. 78/2800 useless extension candidates. Maximal degree in co-relation 10268. Up to 1645 conditions per place. [2024-12-02 06:03:02,648 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 52 selfloop transitions, 11 changer transitions 8/89 dead transitions. [2024-12-02 06:03:02,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 89 transitions, 639 flow [2024-12-02 06:03:02,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 06:03:02,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 06:03:02,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 208 transitions. [2024-12-02 06:03:02,650 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6603174603174603 [2024-12-02 06:03:02,650 INFO L175 Difference]: Start difference. First operand has 75 places, 50 transitions, 258 flow. Second operand 7 states and 208 transitions. [2024-12-02 06:03:02,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 89 transitions, 639 flow [2024-12-02 06:03:02,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 89 transitions, 545 flow, removed 43 selfloop flow, removed 7 redundant places. [2024-12-02 06:03:02,664 INFO L231 Difference]: Finished difference. Result has 69 places, 55 transitions, 308 flow [2024-12-02 06:03:02,664 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=308, PETRI_PLACES=69, PETRI_TRANSITIONS=55} [2024-12-02 06:03:02,665 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 18 predicate places. [2024-12-02 06:03:02,665 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 55 transitions, 308 flow [2024-12-02 06:03:02,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 6 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:03:02,665 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 06:03:02,665 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] [2024-12-02 06:03:02,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 06:03:02,665 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 2 more)] === [2024-12-02 06:03:02,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:03:02,666 INFO L85 PathProgramCache]: Analyzing trace with hash -7120144, now seen corresponding path program 1 times [2024-12-02 06:03:02,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:03:02,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439859027] [2024-12-02 06:03:02,666 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:03:02,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:03:02,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:03:02,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:03:02,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:03:02,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439859027] [2024-12-02 06:03:02,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439859027] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:03:02,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:03:02,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 06:03:02,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411755810] [2024-12-02 06:03:02,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:03:02,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 06:03:02,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:03:02,791 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 06:03:02,791 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:03:02,816 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 45 [2024-12-02 06:03:02,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 55 transitions, 308 flow. Second operand has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 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) [2024-12-02 06:03:02,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 06:03:02,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 45 [2024-12-02 06:03:02,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 06:03:03,300 INFO L124 PetriNetUnfolderBase]: 2404/4138 cut-off events. [2024-12-02 06:03:03,300 INFO L125 PetriNetUnfolderBase]: For 9581/9583 co-relation queries the response was YES. [2024-12-02 06:03:03,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13303 conditions, 4138 events. 2404/4138 cut-off events. For 9581/9583 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 29721 event pairs, 614 based on Foata normal form. 54/4064 useless extension candidates. Maximal degree in co-relation 13279. Up to 1301 conditions per place. [2024-12-02 06:03:03,326 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 38 selfloop transitions, 5 changer transitions 57/116 dead transitions. [2024-12-02 06:03:03,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 116 transitions, 908 flow [2024-12-02 06:03:03,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 06:03:03,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-12-02 06:03:03,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 240 transitions. [2024-12-02 06:03:03,327 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-12-02 06:03:03,327 INFO L175 Difference]: Start difference. First operand has 69 places, 55 transitions, 308 flow. Second operand 8 states and 240 transitions. [2024-12-02 06:03:03,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 116 transitions, 908 flow [2024-12-02 06:03:03,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 116 transitions, 858 flow, removed 25 selfloop flow, removed 2 redundant places. [2024-12-02 06:03:03,345 INFO L231 Difference]: Finished difference. Result has 80 places, 42 transitions, 210 flow [2024-12-02 06:03:03,346 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=210, PETRI_PLACES=80, PETRI_TRANSITIONS=42} [2024-12-02 06:03:03,346 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 29 predicate places. [2024-12-02 06:03:03,346 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 42 transitions, 210 flow [2024-12-02 06:03:03,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 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) [2024-12-02 06:03:03,347 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 06:03:03,347 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] [2024-12-02 06:03:03,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 06:03:03,347 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 2 more)] === [2024-12-02 06:03:03,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:03:03,347 INFO L85 PathProgramCache]: Analyzing trace with hash 610323105, now seen corresponding path program 1 times [2024-12-02 06:03:03,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:03:03,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122480221] [2024-12-02 06:03:03,348 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:03:03,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:03:03,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:03:03,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:03:03,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:03:03,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122480221] [2024-12-02 06:03:03,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122480221] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:03:03,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:03:03,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 06:03:03,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626109448] [2024-12-02 06:03:03,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:03:03,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 06:03:03,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:03:03,498 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 06:03:03,498 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:03:03,516 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 45 [2024-12-02 06:03:03,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 42 transitions, 210 flow. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2024-12-02 06:03:03,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 06:03:03,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 45 [2024-12-02 06:03:03,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 06:03:03,884 INFO L124 PetriNetUnfolderBase]: 1332/2433 cut-off events. [2024-12-02 06:03:03,884 INFO L125 PetriNetUnfolderBase]: For 8470/8840 co-relation queries the response was YES. [2024-12-02 06:03:03,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7463 conditions, 2433 events. 1332/2433 cut-off events. For 8470/8840 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 17011 event pairs, 423 based on Foata normal form. 54/2271 useless extension candidates. Maximal degree in co-relation 7433. Up to 602 conditions per place. [2024-12-02 06:03:03,898 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 25 selfloop transitions, 5 changer transitions 25/76 dead transitions. [2024-12-02 06:03:03,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 76 transitions, 461 flow [2024-12-02 06:03:03,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 06:03:03,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-12-02 06:03:03,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 237 transitions. [2024-12-02 06:03:03,900 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6583333333333333 [2024-12-02 06:03:03,900 INFO L175 Difference]: Start difference. First operand has 80 places, 42 transitions, 210 flow. Second operand 8 states and 237 transitions. [2024-12-02 06:03:03,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 76 transitions, 461 flow [2024-12-02 06:03:03,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 76 transitions, 385 flow, removed 20 selfloop flow, removed 14 redundant places. [2024-12-02 06:03:03,910 INFO L231 Difference]: Finished difference. Result has 71 places, 42 transitions, 191 flow [2024-12-02 06:03:03,910 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=191, PETRI_PLACES=71, PETRI_TRANSITIONS=42} [2024-12-02 06:03:03,911 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 20 predicate places. [2024-12-02 06:03:03,911 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 42 transitions, 191 flow [2024-12-02 06:03:03,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2024-12-02 06:03:03,911 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 06:03:03,911 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] [2024-12-02 06:03:03,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 06:03:03,911 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-12-02 06:03:03,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:03:03,912 INFO L85 PathProgramCache]: Analyzing trace with hash 461614344, now seen corresponding path program 1 times [2024-12-02 06:03:03,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:03:03,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055676845] [2024-12-02 06:03:03,912 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:03:03,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:03:03,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:03:04,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:03:04,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:03:04,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055676845] [2024-12-02 06:03:04,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055676845] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:03:04,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:03:04,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:03:04,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098772833] [2024-12-02 06:03:04,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:03:04,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:03:04,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:03:04,019 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:03:04,019 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:03:04,031 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 45 [2024-12-02 06:03:04,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 42 transitions, 191 flow. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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) [2024-12-02 06:03:04,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 06:03:04,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 45 [2024-12-02 06:03:04,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 06:03:04,392 INFO L124 PetriNetUnfolderBase]: 2066/3562 cut-off events. [2024-12-02 06:03:04,392 INFO L125 PetriNetUnfolderBase]: For 5224/5603 co-relation queries the response was YES. [2024-12-02 06:03:04,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9038 conditions, 3562 events. 2066/3562 cut-off events. For 5224/5603 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 24108 event pairs, 660 based on Foata normal form. 141/3508 useless extension candidates. Maximal degree in co-relation 9014. Up to 1475 conditions per place. [2024-12-02 06:03:04,416 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 32 selfloop transitions, 6 changer transitions 0/60 dead transitions. [2024-12-02 06:03:04,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 60 transitions, 307 flow [2024-12-02 06:03:04,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 06:03:04,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 06:03:04,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 132 transitions. [2024-12-02 06:03:04,417 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7333333333333333 [2024-12-02 06:03:04,417 INFO L175 Difference]: Start difference. First operand has 71 places, 42 transitions, 191 flow. Second operand 4 states and 132 transitions. [2024-12-02 06:03:04,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 60 transitions, 307 flow [2024-12-02 06:03:04,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 60 transitions, 283 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-12-02 06:03:04,435 INFO L231 Difference]: Finished difference. Result has 64 places, 47 transitions, 213 flow [2024-12-02 06:03:04,435 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=213, PETRI_PLACES=64, PETRI_TRANSITIONS=47} [2024-12-02 06:03:04,435 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 13 predicate places. [2024-12-02 06:03:04,435 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 47 transitions, 213 flow [2024-12-02 06:03:04,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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) [2024-12-02 06:03:04,436 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 06:03:04,436 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] [2024-12-02 06:03:04,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 06:03:04,436 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-12-02 06:03:04,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:03:04,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1414421647, now seen corresponding path program 1 times [2024-12-02 06:03:04,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:03:04,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879922191] [2024-12-02 06:03:04,437 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:03:04,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:03:04,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:03:04,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:03:04,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:03:04,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879922191] [2024-12-02 06:03:04,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879922191] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:03:04,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:03:04,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 06:03:04,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486382245] [2024-12-02 06:03:04,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:03:04,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 06:03:04,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:03:04,540 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 06:03:04,540 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:03:04,558 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 45 [2024-12-02 06:03:04,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 47 transitions, 213 flow. Second operand has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 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) [2024-12-02 06:03:04,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 06:03:04,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 45 [2024-12-02 06:03:04,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 06:03:04,885 INFO L124 PetriNetUnfolderBase]: 2028/3506 cut-off events. [2024-12-02 06:03:04,885 INFO L125 PetriNetUnfolderBase]: For 3267/4518 co-relation queries the response was YES. [2024-12-02 06:03:04,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9460 conditions, 3506 events. 2028/3506 cut-off events. For 3267/4518 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 22789 event pairs, 362 based on Foata normal form. 156/3481 useless extension candidates. Maximal degree in co-relation 9440. Up to 1492 conditions per place. [2024-12-02 06:03:04,902 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 40 selfloop transitions, 10 changer transitions 0/72 dead transitions. [2024-12-02 06:03:04,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 72 transitions, 388 flow [2024-12-02 06:03:04,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:03:04,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-12-02 06:03:04,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 167 transitions. [2024-12-02 06:03:04,904 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7422222222222222 [2024-12-02 06:03:04,904 INFO L175 Difference]: Start difference. First operand has 64 places, 47 transitions, 213 flow. Second operand 5 states and 167 transitions. [2024-12-02 06:03:04,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 72 transitions, 388 flow [2024-12-02 06:03:04,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 72 transitions, 385 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 06:03:04,908 INFO L231 Difference]: Finished difference. Result has 69 places, 52 transitions, 278 flow [2024-12-02 06:03:04,908 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=278, PETRI_PLACES=69, PETRI_TRANSITIONS=52} [2024-12-02 06:03:04,909 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 18 predicate places. [2024-12-02 06:03:04,909 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 52 transitions, 278 flow [2024-12-02 06:03:04,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 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) [2024-12-02 06:03:04,909 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 06:03:04,909 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] [2024-12-02 06:03:04,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 06:03:04,909 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-12-02 06:03:04,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:03:04,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1996321098, now seen corresponding path program 1 times [2024-12-02 06:03:04,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:03:04,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882111099] [2024-12-02 06:03:04,910 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:03:04,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:03:04,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:03:05,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:03:05,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:03:05,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882111099] [2024-12-02 06:03:05,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882111099] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:03:05,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:03:05,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 06:03:05,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621448264] [2024-12-02 06:03:05,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:03:05,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 06:03:05,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:03:05,027 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 06:03:05,027 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:03:05,033 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 45 [2024-12-02 06:03:05,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 52 transitions, 278 flow. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2024-12-02 06:03:05,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 06:03:05,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 45 [2024-12-02 06:03:05,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 06:03:05,342 INFO L124 PetriNetUnfolderBase]: 1728/2946 cut-off events. [2024-12-02 06:03:05,343 INFO L125 PetriNetUnfolderBase]: For 4475/7081 co-relation queries the response was YES. [2024-12-02 06:03:05,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9085 conditions, 2946 events. 1728/2946 cut-off events. For 4475/7081 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 17716 event pairs, 124 based on Foata normal form. 154/2950 useless extension candidates. Maximal degree in co-relation 9062. Up to 1232 conditions per place. [2024-12-02 06:03:05,356 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 46 selfloop transitions, 14 changer transitions 0/82 dead transitions. [2024-12-02 06:03:05,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 82 transitions, 501 flow [2024-12-02 06:03:05,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 06:03:05,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-12-02 06:03:05,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 200 transitions. [2024-12-02 06:03:05,358 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7407407407407407 [2024-12-02 06:03:05,358 INFO L175 Difference]: Start difference. First operand has 69 places, 52 transitions, 278 flow. Second operand 6 states and 200 transitions. [2024-12-02 06:03:05,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 82 transitions, 501 flow [2024-12-02 06:03:05,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 82 transitions, 485 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-12-02 06:03:05,363 INFO L231 Difference]: Finished difference. Result has 74 places, 57 transitions, 348 flow [2024-12-02 06:03:05,363 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=348, PETRI_PLACES=74, PETRI_TRANSITIONS=57} [2024-12-02 06:03:05,364 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 23 predicate places. [2024-12-02 06:03:05,364 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 57 transitions, 348 flow [2024-12-02 06:03:05,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2024-12-02 06:03:05,364 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 06:03:05,364 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, 1, 1, 1] [2024-12-02 06:03:05,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 06:03:05,364 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-12-02 06:03:05,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:03:05,365 INFO L85 PathProgramCache]: Analyzing trace with hash -701924076, now seen corresponding path program 1 times [2024-12-02 06:03:05,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:03:05,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147405377] [2024-12-02 06:03:05,365 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:03:05,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:03:05,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:03:05,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:03:05,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:03:05,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147405377] [2024-12-02 06:03:05,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147405377] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:03:05,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:03:05,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 06:03:05,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476370698] [2024-12-02 06:03:05,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:03:05,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 06:03:05,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:03:05,488 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 06:03:05,488 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:03:05,503 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 45 [2024-12-02 06:03:05,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 57 transitions, 348 flow. Second operand has 6 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 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) [2024-12-02 06:03:05,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 06:03:05,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 45 [2024-12-02 06:03:05,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 06:03:06,024 INFO L124 PetriNetUnfolderBase]: 1933/3755 cut-off events. [2024-12-02 06:03:06,025 INFO L125 PetriNetUnfolderBase]: For 8164/9225 co-relation queries the response was YES. [2024-12-02 06:03:06,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11849 conditions, 3755 events. 1933/3755 cut-off events. For 8164/9225 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 28108 event pairs, 559 based on Foata normal form. 106/3444 useless extension candidates. Maximal degree in co-relation 11824. Up to 1294 conditions per place. [2024-12-02 06:03:06,049 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 29 selfloop transitions, 2 changer transitions 10/79 dead transitions. [2024-12-02 06:03:06,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 79 transitions, 510 flow [2024-12-02 06:03:06,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 06:03:06,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-12-02 06:03:06,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 180 transitions. [2024-12-02 06:03:06,051 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-12-02 06:03:06,051 INFO L175 Difference]: Start difference. First operand has 74 places, 57 transitions, 348 flow. Second operand 6 states and 180 transitions. [2024-12-02 06:03:06,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 79 transitions, 510 flow [2024-12-02 06:03:06,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 79 transitions, 479 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-12-02 06:03:06,066 INFO L231 Difference]: Finished difference. Result has 80 places, 58 transitions, 342 flow [2024-12-02 06:03:06,067 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=342, PETRI_PLACES=80, PETRI_TRANSITIONS=58} [2024-12-02 06:03:06,067 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 29 predicate places. [2024-12-02 06:03:06,067 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 58 transitions, 342 flow [2024-12-02 06:03:06,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 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) [2024-12-02 06:03:06,068 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 06:03:06,068 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, 1, 1, 1] [2024-12-02 06:03:06,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 06:03:06,068 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-12-02 06:03:06,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:03:06,068 INFO L85 PathProgramCache]: Analyzing trace with hash 754274482, now seen corresponding path program 2 times [2024-12-02 06:03:06,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:03:06,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59433196] [2024-12-02 06:03:06,069 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 06:03:06,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:03:06,086 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 06:03:06,086 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:03:06,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:03:06,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:03:06,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59433196] [2024-12-02 06:03:06,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59433196] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:03:06,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:03:06,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 06:03:06,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404497702] [2024-12-02 06:03:06,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:03:06,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 06:03:06,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:03:06,222 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 06:03:06,222 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:03:06,231 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 45 [2024-12-02 06:03:06,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 58 transitions, 342 flow. Second operand has 7 states, 7 states have (on average 25.142857142857142) internal successors, (176), 7 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:03:06,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 06:03:06,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 45 [2024-12-02 06:03:06,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 06:03:06,660 INFO L124 PetriNetUnfolderBase]: 2389/3798 cut-off events. [2024-12-02 06:03:06,660 INFO L125 PetriNetUnfolderBase]: For 7082/9831 co-relation queries the response was YES. [2024-12-02 06:03:06,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12122 conditions, 3798 events. 2389/3798 cut-off events. For 7082/9831 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 22884 event pairs, 95 based on Foata normal form. 181/3786 useless extension candidates. Maximal degree in co-relation 12094. Up to 1628 conditions per place. [2024-12-02 06:03:06,679 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 44 selfloop transitions, 18 changer transitions 0/85 dead transitions. [2024-12-02 06:03:06,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 85 transitions, 532 flow [2024-12-02 06:03:06,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 06:03:06,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 06:03:06,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 225 transitions. [2024-12-02 06:03:06,681 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7142857142857143 [2024-12-02 06:03:06,681 INFO L175 Difference]: Start difference. First operand has 80 places, 58 transitions, 342 flow. Second operand 7 states and 225 transitions. [2024-12-02 06:03:06,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 85 transitions, 532 flow [2024-12-02 06:03:06,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 85 transitions, 506 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-12-02 06:03:06,689 INFO L231 Difference]: Finished difference. Result has 81 places, 59 transitions, 379 flow [2024-12-02 06:03:06,689 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=379, PETRI_PLACES=81, PETRI_TRANSITIONS=59} [2024-12-02 06:03:06,690 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 30 predicate places. [2024-12-02 06:03:06,690 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 59 transitions, 379 flow [2024-12-02 06:03:06,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.142857142857142) internal successors, (176), 7 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:03:06,690 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 06:03:06,690 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, 1, 1, 1, 1, 1, 1] [2024-12-02 06:03:06,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 06:03:06,691 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-12-02 06:03:06,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:03:06,691 INFO L85 PathProgramCache]: Analyzing trace with hash 453035319, now seen corresponding path program 1 times [2024-12-02 06:03:06,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:03:06,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691770757] [2024-12-02 06:03:06,691 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:03:06,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:03:06,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:03:06,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:03:06,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:03:06,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691770757] [2024-12-02 06:03:06,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691770757] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:03:06,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:03:06,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 06:03:06,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794641745] [2024-12-02 06:03:06,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:03:06,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 06:03:06,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:03:06,808 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 06:03:06,808 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:03:06,819 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 45 [2024-12-02 06:03:06,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 59 transitions, 379 flow. Second operand has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 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) [2024-12-02 06:03:06,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 06:03:06,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 45 [2024-12-02 06:03:06,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 06:03:07,360 INFO L124 PetriNetUnfolderBase]: 2384/4430 cut-off events. [2024-12-02 06:03:07,360 INFO L125 PetriNetUnfolderBase]: For 12893/13585 co-relation queries the response was YES. [2024-12-02 06:03:07,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14755 conditions, 4430 events. 2384/4430 cut-off events. For 12893/13585 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 34590 event pairs, 560 based on Foata normal form. 53/3956 useless extension candidates. Maximal degree in co-relation 14728. Up to 1640 conditions per place. [2024-12-02 06:03:07,372 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 0 selfloop transitions, 0 changer transitions 85/85 dead transitions. [2024-12-02 06:03:07,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 85 transitions, 584 flow [2024-12-02 06:03:07,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 06:03:07,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 06:03:07,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 193 transitions. [2024-12-02 06:03:07,373 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6126984126984127 [2024-12-02 06:03:07,374 INFO L175 Difference]: Start difference. First operand has 81 places, 59 transitions, 379 flow. Second operand 7 states and 193 transitions. [2024-12-02 06:03:07,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 85 transitions, 584 flow [2024-12-02 06:03:07,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 85 transitions, 513 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-12-02 06:03:07,404 INFO L231 Difference]: Finished difference. Result has 79 places, 0 transitions, 0 flow [2024-12-02 06:03:07,404 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=79, PETRI_TRANSITIONS=0} [2024-12-02 06:03:07,405 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 28 predicate places. [2024-12-02 06:03:07,405 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 0 transitions, 0 flow [2024-12-02 06:03:07,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 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) [2024-12-02 06:03:07,407 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2024-12-02 06:03:07,407 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2024-12-02 06:03:07,408 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2024-12-02 06:03:07,408 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2024-12-02 06:03:07,408 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2024-12-02 06:03:07,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 06:03:07,408 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:03:07,411 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-12-02 06:03:07,411 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-12-02 06:03:07,415 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 06:03:07 BasicIcfg [2024-12-02 06:03:07,415 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-12-02 06:03:07,416 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-02 06:03:07,416 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-02 06:03:07,416 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-02 06:03:07,417 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:02:59" (3/4) ... [2024-12-02 06:03:07,418 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-12-02 06:03:07,421 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2024-12-02 06:03:07,421 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2024-12-02 06:03:07,421 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2024-12-02 06:03:07,421 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2024-12-02 06:03:07,425 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 42 nodes and edges [2024-12-02 06:03:07,425 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-12-02 06:03:07,425 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-12-02 06:03:07,425 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-12-02 06:03:07,480 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c93e4c90-9fb2-4e17-b338-e93dcd45d7c8/bin/uautomizer-verify-84ZbGMXZE1/witness.graphml [2024-12-02 06:03:07,480 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c93e4c90-9fb2-4e17-b338-e93dcd45d7c8/bin/uautomizer-verify-84ZbGMXZE1/witness.yml [2024-12-02 06:03:07,480 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-02 06:03:07,481 INFO L158 Benchmark]: Toolchain (without parser) took 8839.43ms. Allocated memory was 117.4MB in the beginning and 419.4MB in the end (delta: 302.0MB). Free memory was 91.0MB in the beginning and 248.9MB in the end (delta: -157.9MB). Peak memory consumption was 145.5MB. Max. memory is 16.1GB. [2024-12-02 06:03:07,481 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 117.4MB. Free memory is still 72.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 06:03:07,481 INFO L158 Benchmark]: CACSL2BoogieTranslator took 408.78ms. Allocated memory is still 117.4MB. Free memory was 90.8MB in the beginning and 70.3MB in the end (delta: 20.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-12-02 06:03:07,481 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.29ms. Allocated memory is still 117.4MB. Free memory was 70.3MB in the beginning and 68.6MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 06:03:07,482 INFO L158 Benchmark]: Boogie Preprocessor took 36.07ms. Allocated memory is still 117.4MB. Free memory was 68.6MB in the beginning and 66.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 06:03:07,482 INFO L158 Benchmark]: RCFGBuilder took 350.98ms. Allocated memory is still 117.4MB. Free memory was 66.7MB in the beginning and 48.1MB in the end (delta: 18.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-02 06:03:07,482 INFO L158 Benchmark]: TraceAbstraction took 7941.43ms. Allocated memory was 117.4MB in the beginning and 419.4MB in the end (delta: 302.0MB). Free memory was 47.5MB in the beginning and 253.2MB in the end (delta: -205.6MB). Peak memory consumption was 95.1MB. Max. memory is 16.1GB. [2024-12-02 06:03:07,482 INFO L158 Benchmark]: Witness Printer took 64.22ms. Allocated memory is still 419.4MB. Free memory was 253.2MB in the beginning and 248.9MB in the end (delta: 4.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 06:03:07,484 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 117.4MB. Free memory is still 72.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 408.78ms. Allocated memory is still 117.4MB. Free memory was 90.8MB in the beginning and 70.3MB in the end (delta: 20.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.29ms. Allocated memory is still 117.4MB. Free memory was 70.3MB in the beginning and 68.6MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 36.07ms. Allocated memory is still 117.4MB. Free memory was 68.6MB in the beginning and 66.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 350.98ms. Allocated memory is still 117.4MB. Free memory was 66.7MB in the beginning and 48.1MB in the end (delta: 18.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 7941.43ms. Allocated memory was 117.4MB in the beginning and 419.4MB in the end (delta: 302.0MB). Free memory was 47.5MB in the beginning and 253.2MB in the end (delta: -205.6MB). Peak memory consumption was 95.1MB. Max. memory is 16.1GB. * Witness Printer took 64.22ms. Allocated memory is still 419.4MB. Free memory was 253.2MB in the beginning and 248.9MB in the end (delta: 4.2MB). Peak memory consumption was 8.4MB. 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 9 procedures, 75 locations, 5 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: 7.8s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 5.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 704 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 635 mSDsluCounter, 317 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 218 mSDsCounter, 37 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1310 IncrementalHoareTripleChecker+Invalid, 1347 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 37 mSolverCounterUnsat, 99 mSDtfsCounter, 1310 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 104 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=379occurred in iteration=11, InterpolantAutomatonStates: 85, 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, 0.1s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 287 NumberOfCodeBlocks, 287 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 275 ConstructedInterpolants, 0 QuantifiedInterpolants, 1139 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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! [2024-12-02 06:03:07,500 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c93e4c90-9fb2-4e17-b338-e93dcd45d7c8/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE