./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99c56e0e-0653-4507-9fae-365f6736c492/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99c56e0e-0653-4507-9fae-365f6736c492/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99c56e0e-0653-4507-9fae-365f6736c492/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99c56e0e-0653-4507-9fae-365f6736c492/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99c56e0e-0653-4507-9fae-365f6736c492/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99c56e0e-0653-4507-9fae-365f6736c492/bin/utaipan-verify-mE87zJ7Ire --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4633300b13c3e317f8d3cd1cc05f3f76ba271ffedabaa8599cd9617354fa2b7b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:22:32,290 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:22:32,406 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99c56e0e-0653-4507-9fae-365f6736c492/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 21:22:32,417 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:22:32,417 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:22:32,456 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:22:32,459 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:22:32,460 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:22:32,461 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:22:32,466 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:22:32,467 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:22:32,468 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:22:32,468 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:22:32,469 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:22:32,469 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:22:32,469 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:22:32,470 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:22:32,470 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:22:32,471 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:22:32,471 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:22:32,472 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:22:32,472 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:22:32,473 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:22:32,474 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:22:32,474 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:22:32,475 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:22:32,475 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:22:32,475 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:22:32,476 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:22:32,476 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:22:32,478 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:22:32,478 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:22:32,478 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:22:32,478 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:22:32,479 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:22:32,479 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:22:32,479 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:22:32,479 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:22:32,480 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:22:32,480 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:22:32,480 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:22:32,481 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:22:32,481 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:22:32,481 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:22:32,482 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:22:32,482 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:22:32,482 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:22:32,482 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99c56e0e-0653-4507-9fae-365f6736c492/bin/utaipan-verify-mE87zJ7Ire/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99c56e0e-0653-4507-9fae-365f6736c492/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4633300b13c3e317f8d3cd1cc05f3f76ba271ffedabaa8599cd9617354fa2b7b [2023-11-23 21:22:32,811 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:22:32,845 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:22:32,848 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:22:32,850 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:22:32,851 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:22:32,852 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99c56e0e-0653-4507-9fae-365f6736c492/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-23 21:22:36,077 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:22:36,496 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:22:36,501 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99c56e0e-0653-4507-9fae-365f6736c492/sv-benchmarks/c/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-23 21:22:36,522 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99c56e0e-0653-4507-9fae-365f6736c492/bin/utaipan-verify-mE87zJ7Ire/data/74fa74ce1/d68db23beadf435cb122e9c6ab33e090/FLAGd0a21a6d0 [2023-11-23 21:22:36,536 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99c56e0e-0653-4507-9fae-365f6736c492/bin/utaipan-verify-mE87zJ7Ire/data/74fa74ce1/d68db23beadf435cb122e9c6ab33e090 [2023-11-23 21:22:36,539 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:22:36,542 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:22:36,543 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:22:36,543 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:22:36,549 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:22:36,552 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:22:36" (1/1) ... [2023-11-23 21:22:36,553 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6822aa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:36, skipping insertion in model container [2023-11-23 21:22:36,554 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:22:36" (1/1) ... [2023-11-23 21:22:36,624 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:22:36,800 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99c56e0e-0653-4507-9fae-365f6736c492/sv-benchmarks/c/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-11-23 21:22:37,084 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:22:37,099 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:22:37,114 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99c56e0e-0653-4507-9fae-365f6736c492/sv-benchmarks/c/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-11-23 21:22:37,184 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:22:37,223 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:22:37,224 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:22:37,232 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:22:37,232 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:37 WrapperNode [2023-11-23 21:22:37,233 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:22:37,234 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:22:37,234 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:22:37,235 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:22:37,243 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:37" (1/1) ... [2023-11-23 21:22:37,280 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:37" (1/1) ... [2023-11-23 21:22:37,312 INFO L138 Inliner]: procedures = 177, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 81 [2023-11-23 21:22:37,313 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:22:37,314 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:22:37,314 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:22:37,314 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:22:37,324 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:37" (1/1) ... [2023-11-23 21:22:37,325 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:37" (1/1) ... [2023-11-23 21:22:37,339 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:37" (1/1) ... [2023-11-23 21:22:37,340 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:37" (1/1) ... [2023-11-23 21:22:37,351 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:37" (1/1) ... [2023-11-23 21:22:37,359 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:37" (1/1) ... [2023-11-23 21:22:37,363 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:37" (1/1) ... [2023-11-23 21:22:37,371 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:37" (1/1) ... [2023-11-23 21:22:37,374 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:22:37,375 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:22:37,375 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:22:37,375 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:22:37,376 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:37" (1/1) ... [2023-11-23 21:22:37,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:22:37,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99c56e0e-0653-4507-9fae-365f6736c492/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:22:37,418 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99c56e0e-0653-4507-9fae-365f6736c492/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:22:37,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99c56e0e-0653-4507-9fae-365f6736c492/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:22:37,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:22:37,464 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-23 21:22:37,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:22:37,467 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:22:37,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:22:37,467 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-23 21:22:37,467 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-23 21:22:37,468 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-23 21:22:37,468 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-23 21:22:37,468 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-23 21:22:37,468 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-23 21:22:37,468 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-23 21:22:37,468 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-23 21:22:37,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:22:37,470 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-23 21:22:37,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:22:37,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:22:37,472 WARN L213 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-23 21:22:37,659 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:22:37,662 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:22:37,862 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:22:38,007 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:22:38,007 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 21:22:38,008 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:22:38 BoogieIcfgContainer [2023-11-23 21:22:38,008 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:22:38,010 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:22:38,010 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:22:38,014 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:22:38,014 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:22:36" (1/3) ... [2023-11-23 21:22:38,015 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10cb8524 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:22:38, skipping insertion in model container [2023-11-23 21:22:38,015 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:37" (2/3) ... [2023-11-23 21:22:38,016 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10cb8524 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:22:38, skipping insertion in model container [2023-11-23 21:22:38,016 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:22:38" (3/3) ... [2023-11-23 21:22:38,017 INFO L112 eAbstractionObserver]: Analyzing ICFG safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-23 21:22:38,026 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-23 21:22:38,035 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:22:38,035 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:22:38,036 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-23 21:22:38,080 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-23 21:22:38,110 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 57 places, 45 transitions, 106 flow [2023-11-23 21:22:39,069 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 16564 states, 16563 states have (on average 4.234015576888245) internal successors, (70128), 16563 states have internal predecessors, (70128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:22:39,090 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:22:39,164 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, 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;@2c39ce29, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:22:39,164 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-23 21:22:39,199 INFO L276 IsEmpty]: Start isEmpty. Operand has 16564 states, 16563 states have (on average 4.234015576888245) internal successors, (70128), 16563 states have internal predecessors, (70128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:22:39,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-23 21:22:39,237 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:22:39,238 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:22:39,239 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-23 21:22:39,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:22:39,245 INFO L85 PathProgramCache]: Analyzing trace with hash -763496148, now seen corresponding path program 1 times [2023-11-23 21:22:39,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:22:39,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618528893] [2023-11-23 21:22:39,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:39,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:22:39,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:40,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:22:40,027 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:22:40,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618528893] [2023-11-23 21:22:40,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618528893] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:22:40,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:22:40,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:22:40,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868522172] [2023-11-23 21:22:40,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:22:40,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:22:40,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:22:40,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:22:40,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:22:40,133 INFO L87 Difference]: Start difference. First operand has 16564 states, 16563 states have (on average 4.234015576888245) internal successors, (70128), 16563 states have internal predecessors, (70128), 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) Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:22:40,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:22:40,958 INFO L93 Difference]: Finished difference Result 15528 states and 62492 transitions. [2023-11-23 21:22:40,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:22:40,963 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 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) Word has length 16 [2023-11-23 21:22:40,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:22:41,381 INFO L225 Difference]: With dead ends: 15528 [2023-11-23 21:22:41,382 INFO L226 Difference]: Without dead ends: 13764 [2023-11-23 21:22:41,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:22:41,391 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 70 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:22:41,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 58 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:22:41,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13764 states. [2023-11-23 21:22:42,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13764 to 13764. [2023-11-23 21:22:42,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13764 states, 13763 states have (on average 4.078180629223279) internal successors, (56128), 13763 states have internal predecessors, (56128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:22:42,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13764 states to 13764 states and 56128 transitions. [2023-11-23 21:22:42,524 INFO L78 Accepts]: Start accepts. Automaton has 13764 states and 56128 transitions. Word has length 16 [2023-11-23 21:22:42,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:22:42,525 INFO L495 AbstractCegarLoop]: Abstraction has 13764 states and 56128 transitions. [2023-11-23 21:22:42,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:22:42,525 INFO L276 IsEmpty]: Start isEmpty. Operand 13764 states and 56128 transitions. [2023-11-23 21:22:42,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-23 21:22:42,544 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:22:42,544 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:22:42,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:22:42,546 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-23 21:22:42,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:22:42,547 INFO L85 PathProgramCache]: Analyzing trace with hash 54479022, now seen corresponding path program 1 times [2023-11-23 21:22:42,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:22:42,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046839830] [2023-11-23 21:22:42,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:42,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:22:42,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:42,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:22:42,990 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:22:42,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046839830] [2023-11-23 21:22:42,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046839830] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:22:42,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:22:42,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:22:42,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95129268] [2023-11-23 21:22:42,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:22:42,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:22:42,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:22:42,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:22:42,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:22:42,997 INFO L87 Difference]: Start difference. First operand 13764 states and 56128 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:22:43,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:22:43,284 INFO L93 Difference]: Finished difference Result 10088 states and 38532 transitions. [2023-11-23 21:22:43,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:22:43,284 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 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) Word has length 20 [2023-11-23 21:22:43,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:22:43,431 INFO L225 Difference]: With dead ends: 10088 [2023-11-23 21:22:43,431 INFO L226 Difference]: Without dead ends: 8724 [2023-11-23 21:22:43,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:22:43,433 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 130 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:22:43,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 72 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:22:43,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8724 states. [2023-11-23 21:22:43,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8724 to 8724. [2023-11-23 21:22:43,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8724 states, 8723 states have (on average 3.834460621345867) internal successors, (33448), 8723 states have internal predecessors, (33448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:22:43,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8724 states to 8724 states and 33448 transitions. [2023-11-23 21:22:43,939 INFO L78 Accepts]: Start accepts. Automaton has 8724 states and 33448 transitions. Word has length 20 [2023-11-23 21:22:43,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:22:43,940 INFO L495 AbstractCegarLoop]: Abstraction has 8724 states and 33448 transitions. [2023-11-23 21:22:43,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:22:43,941 INFO L276 IsEmpty]: Start isEmpty. Operand 8724 states and 33448 transitions. [2023-11-23 21:22:43,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-23 21:22:43,969 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:22:43,969 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:22:43,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:22:43,970 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-23 21:22:43,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:22:43,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1614205996, now seen corresponding path program 1 times [2023-11-23 21:22:43,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:22:43,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709722251] [2023-11-23 21:22:43,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:43,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:22:44,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:44,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:22:44,298 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:22:44,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709722251] [2023-11-23 21:22:44,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709722251] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:22:44,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:22:44,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:22:44,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378330501] [2023-11-23 21:22:44,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:22:44,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:22:44,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:22:44,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:22:44,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:22:44,311 INFO L87 Difference]: Start difference. First operand 8724 states and 33448 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:22:44,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:22:44,553 INFO L93 Difference]: Finished difference Result 5980 states and 22224 transitions. [2023-11-23 21:22:44,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:22:44,554 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 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) Word has length 24 [2023-11-23 21:22:44,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:22:44,657 INFO L225 Difference]: With dead ends: 5980 [2023-11-23 21:22:44,658 INFO L226 Difference]: Without dead ends: 5336 [2023-11-23 21:22:44,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:22:44,660 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 197 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:22:44,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 86 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:22:44,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5336 states. [2023-11-23 21:22:44,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5336 to 5336. [2023-11-23 21:22:44,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5336 states, 5335 states have (on average 3.72933458294283) internal successors, (19896), 5335 states have internal predecessors, (19896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:22:44,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5336 states to 5336 states and 19896 transitions. [2023-11-23 21:22:44,868 INFO L78 Accepts]: Start accepts. Automaton has 5336 states and 19896 transitions. Word has length 24 [2023-11-23 21:22:44,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:22:44,869 INFO L495 AbstractCegarLoop]: Abstraction has 5336 states and 19896 transitions. [2023-11-23 21:22:44,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:22:44,869 INFO L276 IsEmpty]: Start isEmpty. Operand 5336 states and 19896 transitions. [2023-11-23 21:22:44,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-23 21:22:44,889 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:22:44,890 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:22:44,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:22:44,890 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-23 21:22:44,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:22:44,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1585022242, now seen corresponding path program 1 times [2023-11-23 21:22:44,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:22:44,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607684342] [2023-11-23 21:22:44,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:44,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:22:44,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:45,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:22:45,085 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:22:45,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607684342] [2023-11-23 21:22:45,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607684342] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:22:45,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:22:45,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 21:22:45,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547979323] [2023-11-23 21:22:45,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:22:45,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:22:45,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:22:45,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:22:45,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:22:45,089 INFO L87 Difference]: Start difference. First operand 5336 states and 19896 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:22:45,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:22:45,335 INFO L93 Difference]: Finished difference Result 4488 states and 16904 transitions. [2023-11-23 21:22:45,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 21:22:45,336 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 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) Word has length 29 [2023-11-23 21:22:45,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:22:45,368 INFO L225 Difference]: With dead ends: 4488 [2023-11-23 21:22:45,368 INFO L226 Difference]: Without dead ends: 4328 [2023-11-23 21:22:45,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-23 21:22:45,370 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 203 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:22:45,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 72 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:22:45,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4328 states. [2023-11-23 21:22:45,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4328 to 4328. [2023-11-23 21:22:45,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4328 states, 4327 states have (on average 3.7827594176103534) internal successors, (16368), 4327 states have internal predecessors, (16368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:22:45,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4328 states to 4328 states and 16368 transitions. [2023-11-23 21:22:45,534 INFO L78 Accepts]: Start accepts. Automaton has 4328 states and 16368 transitions. Word has length 29 [2023-11-23 21:22:45,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:22:45,534 INFO L495 AbstractCegarLoop]: Abstraction has 4328 states and 16368 transitions. [2023-11-23 21:22:45,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:22:45,535 INFO L276 IsEmpty]: Start isEmpty. Operand 4328 states and 16368 transitions. [2023-11-23 21:22:45,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-23 21:22:45,553 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:22:45,553 INFO L195 NwaCegarLoop]: 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] [2023-11-23 21:22:45,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 21:22:45,554 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-23 21:22:45,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:22:45,554 INFO L85 PathProgramCache]: Analyzing trace with hash 347557163, now seen corresponding path program 1 times [2023-11-23 21:22:45,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:22:45,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638967965] [2023-11-23 21:22:45,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:45,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:22:45,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:45,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:22:45,824 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:22:45,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638967965] [2023-11-23 21:22:45,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638967965] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:22:45,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:22:45,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 21:22:45,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790078479] [2023-11-23 21:22:45,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:22:45,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:22:45,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:22:45,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:22:45,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:22:45,828 INFO L87 Difference]: Start difference. First operand 4328 states and 16368 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:22:46,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:22:46,122 INFO L93 Difference]: Finished difference Result 7848 states and 29296 transitions. [2023-11-23 21:22:46,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 21:22:46,122 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 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) Word has length 34 [2023-11-23 21:22:46,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:22:46,144 INFO L225 Difference]: With dead ends: 7848 [2023-11-23 21:22:46,145 INFO L226 Difference]: Without dead ends: 3334 [2023-11-23 21:22:46,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2023-11-23 21:22:46,149 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 75 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:22:46,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 130 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:22:46,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3334 states. [2023-11-23 21:22:46,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3334 to 3142. [2023-11-23 21:22:46,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3142 states, 3141 states have (on average 3.6854504934734162) internal successors, (11576), 3141 states have internal predecessors, (11576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:22:46,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3142 states to 3142 states and 11576 transitions. [2023-11-23 21:22:46,296 INFO L78 Accepts]: Start accepts. Automaton has 3142 states and 11576 transitions. Word has length 34 [2023-11-23 21:22:46,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:22:46,297 INFO L495 AbstractCegarLoop]: Abstraction has 3142 states and 11576 transitions. [2023-11-23 21:22:46,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:22:46,297 INFO L276 IsEmpty]: Start isEmpty. Operand 3142 states and 11576 transitions. [2023-11-23 21:22:46,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-23 21:22:46,315 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:22:46,315 INFO L195 NwaCegarLoop]: 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] [2023-11-23 21:22:46,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 21:22:46,316 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-23 21:22:46,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:22:46,316 INFO L85 PathProgramCache]: Analyzing trace with hash 648442415, now seen corresponding path program 2 times [2023-11-23 21:22:46,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:22:46,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96485114] [2023-11-23 21:22:46,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:46,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:22:46,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:46,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:22:46,638 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:22:46,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96485114] [2023-11-23 21:22:46,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96485114] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:22:46,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:22:46,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 21:22:46,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951998635] [2023-11-23 21:22:46,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:22:46,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:22:46,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:22:46,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:22:46,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:22:46,642 INFO L87 Difference]: Start difference. First operand 3142 states and 11576 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:22:46,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:22:46,984 INFO L93 Difference]: Finished difference Result 6646 states and 24232 transitions. [2023-11-23 21:22:46,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 21:22:46,985 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 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) Word has length 34 [2023-11-23 21:22:46,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:22:46,997 INFO L225 Difference]: With dead ends: 6646 [2023-11-23 21:22:46,997 INFO L226 Difference]: Without dead ends: 1990 [2023-11-23 21:22:46,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2023-11-23 21:22:46,999 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 112 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:22:46,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 191 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:22:47,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1990 states. [2023-11-23 21:22:47,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1990 to 1990. [2023-11-23 21:22:47,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1990 states, 1989 states have (on average 3.551533433886375) internal successors, (7064), 1989 states have internal predecessors, (7064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:22:47,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1990 states to 1990 states and 7064 transitions. [2023-11-23 21:22:47,089 INFO L78 Accepts]: Start accepts. Automaton has 1990 states and 7064 transitions. Word has length 34 [2023-11-23 21:22:47,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:22:47,089 INFO L495 AbstractCegarLoop]: Abstraction has 1990 states and 7064 transitions. [2023-11-23 21:22:47,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:22:47,090 INFO L276 IsEmpty]: Start isEmpty. Operand 1990 states and 7064 transitions. [2023-11-23 21:22:47,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-23 21:22:47,098 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:22:47,098 INFO L195 NwaCegarLoop]: 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] [2023-11-23 21:22:47,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 21:22:47,098 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-23 21:22:47,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:22:47,099 INFO L85 PathProgramCache]: Analyzing trace with hash -715851251, now seen corresponding path program 3 times [2023-11-23 21:22:47,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:22:47,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294077780] [2023-11-23 21:22:47,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:47,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:22:47,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:47,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:22:47,319 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:22:47,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294077780] [2023-11-23 21:22:47,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294077780] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:22:47,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:22:47,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 21:22:47,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899379338] [2023-11-23 21:22:47,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:22:47,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:22:47,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:22:47,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:22:47,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:22:47,322 INFO L87 Difference]: Start difference. First operand 1990 states and 7064 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:22:47,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:22:47,495 INFO L93 Difference]: Finished difference Result 2582 states and 9096 transitions. [2023-11-23 21:22:47,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:22:47,495 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 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) Word has length 34 [2023-11-23 21:22:47,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:22:47,504 INFO L225 Difference]: With dead ends: 2582 [2023-11-23 21:22:47,504 INFO L226 Difference]: Without dead ends: 1254 [2023-11-23 21:22:47,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:22:47,505 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 44 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:22:47,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 165 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:22:47,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1254 states. [2023-11-23 21:22:47,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1254 to 1254. [2023-11-23 21:22:47,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1254 states, 1253 states have (on average 3.4285714285714284) internal successors, (4296), 1253 states have internal predecessors, (4296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:22:47,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1254 states to 1254 states and 4296 transitions. [2023-11-23 21:22:47,557 INFO L78 Accepts]: Start accepts. Automaton has 1254 states and 4296 transitions. Word has length 34 [2023-11-23 21:22:47,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:22:47,558 INFO L495 AbstractCegarLoop]: Abstraction has 1254 states and 4296 transitions. [2023-11-23 21:22:47,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:22:47,558 INFO L276 IsEmpty]: Start isEmpty. Operand 1254 states and 4296 transitions. [2023-11-23 21:22:47,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-23 21:22:47,563 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:22:47,563 INFO L195 NwaCegarLoop]: 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] [2023-11-23 21:22:47,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 21:22:47,564 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-23 21:22:47,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:22:47,565 INFO L85 PathProgramCache]: Analyzing trace with hash -851422441, now seen corresponding path program 4 times [2023-11-23 21:22:47,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:22:47,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664240516] [2023-11-23 21:22:47,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:47,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:22:47,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:47,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:22:47,838 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:22:47,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664240516] [2023-11-23 21:22:47,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664240516] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:22:47,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:22:47,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 21:22:47,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688859850] [2023-11-23 21:22:47,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:22:47,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:22:47,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:22:47,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:22:47,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:22:47,841 INFO L87 Difference]: Start difference. First operand 1254 states and 4296 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:22:47,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:22:47,949 INFO L93 Difference]: Finished difference Result 1222 states and 4200 transitions. [2023-11-23 21:22:47,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:22:47,950 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 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) Word has length 34 [2023-11-23 21:22:47,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:22:47,951 INFO L225 Difference]: With dead ends: 1222 [2023-11-23 21:22:47,951 INFO L226 Difference]: Without dead ends: 0 [2023-11-23 21:22:47,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-23 21:22:47,953 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 59 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:22:47,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 64 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:22:47,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-23 21:22:47,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-23 21:22:47,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:22:47,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-23 21:22:47,956 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2023-11-23 21:22:47,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:22:47,956 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-23 21:22:47,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:22:47,957 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-23 21:22:47,957 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-23 21:22:47,960 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-11-23 21:22:47,960 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2023-11-23 21:22:47,962 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-11-23 21:22:47,963 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-11-23 21:22:47,963 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-11-23 21:22:47,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-23 21:22:47,969 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1, 1] [2023-11-23 21:22:47,974 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-23 21:22:47,974 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:22:47,979 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:22:47 BasicIcfg [2023-11-23 21:22:47,980 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:22:47,980 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:22:47,981 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:22:47,981 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:22:47,981 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:22:38" (3/4) ... [2023-11-23 21:22:47,984 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-23 21:22:47,988 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-23 21:22:47,988 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-23 21:22:47,988 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-11-23 21:22:47,988 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2023-11-23 21:22:47,996 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 41 nodes and edges [2023-11-23 21:22:47,996 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2023-11-23 21:22:47,997 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-23 21:22:47,997 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-23 21:22:48,102 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99c56e0e-0653-4507-9fae-365f6736c492/bin/utaipan-verify-mE87zJ7Ire/witness.graphml [2023-11-23 21:22:48,103 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99c56e0e-0653-4507-9fae-365f6736c492/bin/utaipan-verify-mE87zJ7Ire/witness.yml [2023-11-23 21:22:48,103 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:22:48,104 INFO L158 Benchmark]: Toolchain (without parser) took 11562.99ms. Allocated memory was 132.1MB in the beginning and 1.1GB in the end (delta: 918.6MB). Free memory was 98.7MB in the beginning and 281.3MB in the end (delta: -182.7MB). Peak memory consumption was 736.2MB. Max. memory is 16.1GB. [2023-11-23 21:22:48,104 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 100.7MB. Free memory is still 50.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:22:48,105 INFO L158 Benchmark]: CACSL2BoogieTranslator took 690.10ms. Allocated memory is still 132.1MB. Free memory was 98.3MB in the beginning and 77.6MB in the end (delta: 20.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-23 21:22:48,105 INFO L158 Benchmark]: Boogie Procedure Inliner took 79.09ms. Allocated memory is still 132.1MB. Free memory was 77.6MB in the beginning and 75.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:22:48,105 INFO L158 Benchmark]: Boogie Preprocessor took 60.57ms. Allocated memory is still 132.1MB. Free memory was 75.6MB in the beginning and 73.9MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:22:48,106 INFO L158 Benchmark]: RCFGBuilder took 633.09ms. Allocated memory is still 132.1MB. Free memory was 73.9MB in the beginning and 91.1MB in the end (delta: -17.3MB). Peak memory consumption was 19.9MB. Max. memory is 16.1GB. [2023-11-23 21:22:48,106 INFO L158 Benchmark]: TraceAbstraction took 9969.70ms. Allocated memory was 132.1MB in the beginning and 1.1GB in the end (delta: 918.6MB). Free memory was 90.6MB in the beginning and 285.5MB in the end (delta: -194.9MB). Peak memory consumption was 722.6MB. Max. memory is 16.1GB. [2023-11-23 21:22:48,107 INFO L158 Benchmark]: Witness Printer took 122.44ms. Allocated memory is still 1.1GB. Free memory was 285.5MB in the beginning and 281.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 21:22:48,109 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 100.7MB. Free memory is still 50.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 690.10ms. Allocated memory is still 132.1MB. Free memory was 98.3MB in the beginning and 77.6MB in the end (delta: 20.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 79.09ms. Allocated memory is still 132.1MB. Free memory was 77.6MB in the beginning and 75.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 60.57ms. Allocated memory is still 132.1MB. Free memory was 75.6MB in the beginning and 73.9MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 633.09ms. Allocated memory is still 132.1MB. Free memory was 73.9MB in the beginning and 91.1MB in the end (delta: -17.3MB). Peak memory consumption was 19.9MB. Max. memory is 16.1GB. * TraceAbstraction took 9969.70ms. Allocated memory was 132.1MB in the beginning and 1.1GB in the end (delta: 918.6MB). Free memory was 90.6MB in the beginning and 285.5MB in the end (delta: -194.9MB). Peak memory consumption was 722.6MB. Max. memory is 16.1GB. * Witness Printer took 122.44ms. Allocated memory is still 1.1GB. Free memory was 285.5MB in the beginning and 281.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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. OverallTime: 9.9s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.2s, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 890 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 890 mSDsluCounter, 838 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 643 mSDsCounter, 30 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 793 IncrementalHoareTripleChecker+Invalid, 823 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 30 mSolverCounterUnsat, 195 mSDtfsCounter, 793 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16564occurred in iteration=0, InterpolantAutomatonStates: 55, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.3s AutomataMinimizationTime, 8 MinimizatonAttempts, 192 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 225 NumberOfCodeBlocks, 225 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 217 ConstructedInterpolants, 0 QuantifiedInterpolants, 993 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-23 21:22:48,165 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99c56e0e-0653-4507-9fae-365f6736c492/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE