./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-ext/31_simple_loop5_vs-pthread.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7414cefe-d3e5-4dcf-a7e1-52ed380f43a4/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7414cefe-d3e5-4dcf-a7e1-52ed380f43a4/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7414cefe-d3e5-4dcf-a7e1-52ed380f43a4/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7414cefe-d3e5-4dcf-a7e1-52ed380f43a4/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-ext/31_simple_loop5_vs-pthread.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7414cefe-d3e5-4dcf-a7e1-52ed380f43a4/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7414cefe-d3e5-4dcf-a7e1-52ed380f43a4/bin/utaipan-verify-t7M7D8N6sZ --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 389f5b7d6579b5ac06564f3c82f3f69fea502868b761df6187d49f96e1a317cd --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:08:18,224 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:08:18,372 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7414cefe-d3e5-4dcf-a7e1-52ed380f43a4/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-19 05:08:18,378 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:08:18,379 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:08:18,424 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:08:18,425 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:08:18,426 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:08:18,427 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:08:18,434 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:08:18,434 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:08:18,435 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:08:18,435 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:08:18,437 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:08:18,438 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:08:18,439 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:08:18,439 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:08:18,440 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:08:18,440 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:08:18,441 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:08:18,442 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:08:18,442 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:08:18,444 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:08:18,444 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:08:18,445 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:08:18,445 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:08:18,446 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:08:18,447 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:08:18,447 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:08:18,448 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:08:18,449 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:08:18,450 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:08:18,450 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:08:18,450 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:08:18,451 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:08:18,451 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:08:18,451 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:08:18,452 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:08:18,452 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:08:18,452 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:08:18,453 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:08:18,453 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:08:18,454 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:08:18,455 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:08:18,455 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:08:18,456 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_7414cefe-d3e5-4dcf-a7e1-52ed380f43a4/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7414cefe-d3e5-4dcf-a7e1-52ed380f43a4/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 389f5b7d6579b5ac06564f3c82f3f69fea502868b761df6187d49f96e1a317cd [2023-11-19 05:08:18,842 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:08:18,872 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:08:18,875 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:08:18,877 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:08:18,879 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:08:18,882 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7414cefe-d3e5-4dcf-a7e1-52ed380f43a4/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/pthread-ext/31_simple_loop5_vs-pthread.i [2023-11-19 05:08:22,390 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:08:22,707 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:08:22,707 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7414cefe-d3e5-4dcf-a7e1-52ed380f43a4/sv-benchmarks/c/pthread-ext/31_simple_loop5_vs-pthread.i [2023-11-19 05:08:22,726 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7414cefe-d3e5-4dcf-a7e1-52ed380f43a4/bin/utaipan-verify-t7M7D8N6sZ/data/a4f4e491b/621fab7fad15407f9119524d354e6f88/FLAG9e8db8f98 [2023-11-19 05:08:22,741 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7414cefe-d3e5-4dcf-a7e1-52ed380f43a4/bin/utaipan-verify-t7M7D8N6sZ/data/a4f4e491b/621fab7fad15407f9119524d354e6f88 [2023-11-19 05:08:22,744 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:08:22,746 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:08:22,748 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:08:22,748 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:08:22,759 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:08:22,760 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:08:22" (1/1) ... [2023-11-19 05:08:22,761 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63fcaea0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:22, skipping insertion in model container [2023-11-19 05:08:22,762 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:08:22" (1/1) ... [2023-11-19 05:08:22,816 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:08:23,263 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_7414cefe-d3e5-4dcf-a7e1-52ed380f43a4/sv-benchmarks/c/pthread-ext/31_simple_loop5_vs-pthread.i[30648,30661] [2023-11-19 05:08:23,272 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:08:23,283 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:08:23,328 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_7414cefe-d3e5-4dcf-a7e1-52ed380f43a4/sv-benchmarks/c/pthread-ext/31_simple_loop5_vs-pthread.i[30648,30661] [2023-11-19 05:08:23,332 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:08:23,377 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:08:23,377 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:23 WrapperNode [2023-11-19 05:08:23,377 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:08:23,378 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:08:23,378 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:08:23,379 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:08:23,385 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:23" (1/1) ... [2023-11-19 05:08:23,402 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:23" (1/1) ... [2023-11-19 05:08:23,427 INFO L138 Inliner]: procedures = 162, calls = 20, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 38 [2023-11-19 05:08:23,428 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:08:23,429 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:08:23,429 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:08:23,429 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:08:23,450 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:23" (1/1) ... [2023-11-19 05:08:23,451 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:23" (1/1) ... [2023-11-19 05:08:23,455 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:23" (1/1) ... [2023-11-19 05:08:23,455 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:23" (1/1) ... [2023-11-19 05:08:23,462 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:23" (1/1) ... [2023-11-19 05:08:23,467 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:23" (1/1) ... [2023-11-19 05:08:23,469 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:23" (1/1) ... [2023-11-19 05:08:23,471 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:23" (1/1) ... [2023-11-19 05:08:23,475 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:08:23,476 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:08:23,476 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:08:23,476 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:08:23,477 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:23" (1/1) ... [2023-11-19 05:08:23,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:08:23,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7414cefe-d3e5-4dcf-a7e1-52ed380f43a4/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:08:23,525 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7414cefe-d3e5-4dcf-a7e1-52ed380f43a4/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:08:23,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7414cefe-d3e5-4dcf-a7e1-52ed380f43a4/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:08:23,584 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2023-11-19 05:08:23,584 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2023-11-19 05:08:23,584 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-19 05:08:23,584 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-19 05:08:23,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 05:08:23,587 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 05:08:23,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:08:23,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:08:23,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:08:23,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:08:23,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:08:23,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:08:23,591 WARN L210 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 05:08:23,855 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:08:23,863 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:08:24,113 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:08:24,133 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:08:24,134 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-19 05:08:24,140 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:08:24 BoogieIcfgContainer [2023-11-19 05:08:24,141 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:08:24,146 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:08:24,146 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:08:24,150 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:08:24,151 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:08:22" (1/3) ... [2023-11-19 05:08:24,153 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5db69946 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:08:24, skipping insertion in model container [2023-11-19 05:08:24,153 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:23" (2/3) ... [2023-11-19 05:08:24,155 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5db69946 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:08:24, skipping insertion in model container [2023-11-19 05:08:24,156 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:08:24" (3/3) ... [2023-11-19 05:08:24,158 INFO L112 eAbstractionObserver]: Analyzing ICFG 31_simple_loop5_vs-pthread.i [2023-11-19 05:08:24,170 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 05:08:24,184 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:08:24,184 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 05:08:24,184 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 05:08:24,290 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 05:08:24,335 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-19 05:08:24,360 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 69 transitions, 146 flow [2023-11-19 05:08:24,363 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 69 transitions, 146 flow [2023-11-19 05:08:24,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 69 transitions, 146 flow [2023-11-19 05:08:24,420 INFO L124 PetriNetUnfolderBase]: 7/79 cut-off events. [2023-11-19 05:08:24,421 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 05:08:24,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 79 events. 7/79 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 123 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 57. Up to 4 conditions per place. [2023-11-19 05:08:24,437 INFO L119 LiptonReduction]: Number of co-enabled transitions 1204 [2023-11-19 05:08:26,978 INFO L134 LiptonReduction]: Checked pairs total: 1941 [2023-11-19 05:08:26,979 INFO L136 LiptonReduction]: Total number of compositions: 53 [2023-11-19 05:08:26,988 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 25 places, 22 transitions, 52 flow [2023-11-19 05:08:27,031 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 199 states, 195 states have (on average 2.9128205128205127) internal successors, (568), 198 states have internal predecessors, (568), 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) [2023-11-19 05:08:27,051 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:08:27,057 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;@392b2c35, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:08:27,058 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-19 05:08:27,061 INFO L276 IsEmpty]: Start isEmpty. Operand has 199 states, 195 states have (on average 2.9128205128205127) internal successors, (568), 198 states have internal predecessors, (568), 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) [2023-11-19 05:08:27,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 05:08:27,067 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:27,067 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 05:08:27,068 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-19 05:08:27,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:27,073 INFO L85 PathProgramCache]: Analyzing trace with hash 266512925, now seen corresponding path program 1 times [2023-11-19 05:08:27,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:08:27,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518071290] [2023-11-19 05:08:27,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:27,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:08:27,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:27,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:08:27,482 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:08:27,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518071290] [2023-11-19 05:08:27,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518071290] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:08:27,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:08:27,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 05:08:27,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471116473] [2023-11-19 05:08:27,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:08:27,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:08:27,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:08:27,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:08:27,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:08:27,534 INFO L87 Difference]: Start difference. First operand has 199 states, 195 states have (on average 2.9128205128205127) internal successors, (568), 198 states have internal predecessors, (568), 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 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2023-11-19 05:08:27,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:08:27,616 INFO L93 Difference]: Finished difference Result 142 states and 378 transitions. [2023-11-19 05:08:27,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:08:27,618 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2023-11-19 05:08:27,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:08:27,638 INFO L225 Difference]: With dead ends: 142 [2023-11-19 05:08:27,638 INFO L226 Difference]: Without dead ends: 142 [2023-11-19 05:08:27,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:08:27,645 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 9 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:08:27,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 9 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:08:27,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2023-11-19 05:08:27,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2023-11-19 05:08:27,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 142 states have (on average 2.6619718309859155) internal successors, (378), 141 states have internal predecessors, (378), 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) [2023-11-19 05:08:27,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 378 transitions. [2023-11-19 05:08:27,717 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 378 transitions. Word has length 5 [2023-11-19 05:08:27,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:08:27,718 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 378 transitions. [2023-11-19 05:08:27,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2023-11-19 05:08:27,718 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 378 transitions. [2023-11-19 05:08:27,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 05:08:27,719 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:27,719 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-19 05:08:27,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:08:27,720 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-19 05:08:27,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:27,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1159025839, now seen corresponding path program 1 times [2023-11-19 05:08:27,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:08:27,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861816219] [2023-11-19 05:08:27,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:27,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:08:27,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 05:08:27,747 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 05:08:27,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 05:08:27,783 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-19 05:08:27,783 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 05:08:27,785 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-11-19 05:08:27,787 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-11-19 05:08:27,788 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-19 05:08:27,788 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-11-19 05:08:27,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 05:08:27,791 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-19 05:08:27,793 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 05:08:27,793 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 05:08:27,814 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 05:08:27,818 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-19 05:08:27,818 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 98 transitions, 216 flow [2023-11-19 05:08:27,819 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 97 places, 98 transitions, 216 flow [2023-11-19 05:08:27,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 98 transitions, 216 flow [2023-11-19 05:08:27,846 INFO L124 PetriNetUnfolderBase]: 10/106 cut-off events. [2023-11-19 05:08:27,846 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 05:08:27,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 106 events. 10/106 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 189 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 113. Up to 6 conditions per place. [2023-11-19 05:08:27,850 INFO L119 LiptonReduction]: Number of co-enabled transitions 2324 [2023-11-19 05:08:30,187 INFO L134 LiptonReduction]: Checked pairs total: 5959 [2023-11-19 05:08:30,187 INFO L136 LiptonReduction]: Total number of compositions: 73 [2023-11-19 05:08:30,188 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 45 places, 40 transitions, 100 flow [2023-11-19 05:08:30,383 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2503 states, 2498 states have (on average 3.907526020816653) internal successors, (9761), 2502 states have internal predecessors, (9761), 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) [2023-11-19 05:08:30,388 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:08:30,397 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;@392b2c35, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:08:30,397 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-19 05:08:30,411 INFO L276 IsEmpty]: Start isEmpty. Operand has 2503 states, 2498 states have (on average 3.907526020816653) internal successors, (9761), 2502 states have internal predecessors, (9761), 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) [2023-11-19 05:08:30,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 05:08:30,412 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:30,412 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 05:08:30,413 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-19 05:08:30,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:30,414 INFO L85 PathProgramCache]: Analyzing trace with hash 456712821, now seen corresponding path program 1 times [2023-11-19 05:08:30,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:08:30,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234343475] [2023-11-19 05:08:30,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:30,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:08:30,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:30,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:08:30,520 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:08:30,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234343475] [2023-11-19 05:08:30,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234343475] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:08:30,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:08:30,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 05:08:30,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67102306] [2023-11-19 05:08:30,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:08:30,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:08:30,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:08:30,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:08:30,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:08:30,537 INFO L87 Difference]: Start difference. First operand has 2503 states, 2498 states have (on average 3.907526020816653) internal successors, (9761), 2502 states have internal predecessors, (9761), 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 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2023-11-19 05:08:30,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:08:30,678 INFO L93 Difference]: Finished difference Result 2253 states and 8351 transitions. [2023-11-19 05:08:30,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:08:30,679 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2023-11-19 05:08:30,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:08:30,717 INFO L225 Difference]: With dead ends: 2253 [2023-11-19 05:08:30,718 INFO L226 Difference]: Without dead ends: 2253 [2023-11-19 05:08:30,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:08:30,720 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 20 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:08:30,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 32 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:08:30,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2253 states. [2023-11-19 05:08:30,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2253 to 2253. [2023-11-19 05:08:30,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2253 states, 2253 states have (on average 3.706613404349756) internal successors, (8351), 2252 states have internal predecessors, (8351), 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) [2023-11-19 05:08:30,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2253 states to 2253 states and 8351 transitions. [2023-11-19 05:08:30,886 INFO L78 Accepts]: Start accepts. Automaton has 2253 states and 8351 transitions. Word has length 5 [2023-11-19 05:08:30,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:08:30,887 INFO L495 AbstractCegarLoop]: Abstraction has 2253 states and 8351 transitions. [2023-11-19 05:08:30,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2023-11-19 05:08:30,888 INFO L276 IsEmpty]: Start isEmpty. Operand 2253 states and 8351 transitions. [2023-11-19 05:08:30,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-19 05:08:30,890 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:30,890 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:08:30,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 05:08:30,891 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-19 05:08:30,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:30,891 INFO L85 PathProgramCache]: Analyzing trace with hash -993152344, now seen corresponding path program 1 times [2023-11-19 05:08:30,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:08:30,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266268917] [2023-11-19 05:08:30,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:30,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:08:30,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:31,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:08:31,073 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:08:31,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266268917] [2023-11-19 05:08:31,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266268917] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:08:31,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:08:31,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:08:31,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296020131] [2023-11-19 05:08:31,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:08:31,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:08:31,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:08:31,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:08:31,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:08:31,076 INFO L87 Difference]: Start difference. First operand 2253 states and 8351 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2023-11-19 05:08:31,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:08:31,140 INFO L93 Difference]: Finished difference Result 542 states and 1538 transitions. [2023-11-19 05:08:31,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:08:31,141 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 13 [2023-11-19 05:08:31,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:08:31,150 INFO L225 Difference]: With dead ends: 542 [2023-11-19 05:08:31,151 INFO L226 Difference]: Without dead ends: 542 [2023-11-19 05:08:31,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:08:31,156 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 16 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:08:31,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 30 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:08:31,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2023-11-19 05:08:31,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 446. [2023-11-19 05:08:31,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 445 states have (on average 2.8629213483146065) internal successors, (1274), 445 states have internal predecessors, (1274), 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) [2023-11-19 05:08:31,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 1274 transitions. [2023-11-19 05:08:31,183 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 1274 transitions. Word has length 13 [2023-11-19 05:08:31,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:08:31,184 INFO L495 AbstractCegarLoop]: Abstraction has 446 states and 1274 transitions. [2023-11-19 05:08:31,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2023-11-19 05:08:31,184 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 1274 transitions. [2023-11-19 05:08:31,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-19 05:08:31,194 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:31,194 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:08:31,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 05:08:31,195 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-19 05:08:31,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:31,195 INFO L85 PathProgramCache]: Analyzing trace with hash -704292112, now seen corresponding path program 1 times [2023-11-19 05:08:31,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:08:31,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598255305] [2023-11-19 05:08:31,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:31,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:08:31,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 05:08:31,239 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 05:08:31,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 05:08:31,283 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-19 05:08:31,288 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 05:08:31,289 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-11-19 05:08:31,289 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-11-19 05:08:31,289 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-11-19 05:08:31,289 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2023-11-19 05:08:31,290 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-11-19 05:08:31,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 05:08:31,291 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-19 05:08:31,291 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 05:08:31,291 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-19 05:08:31,333 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 05:08:31,341 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-19 05:08:31,342 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 125 places, 127 transitions, 290 flow [2023-11-19 05:08:31,343 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 125 places, 127 transitions, 290 flow [2023-11-19 05:08:31,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 125 places, 127 transitions, 290 flow [2023-11-19 05:08:31,421 INFO L124 PetriNetUnfolderBase]: 13/133 cut-off events. [2023-11-19 05:08:31,422 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-19 05:08:31,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151 conditions, 133 events. 13/133 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 257 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 144. Up to 8 conditions per place. [2023-11-19 05:08:31,436 INFO L119 LiptonReduction]: Number of co-enabled transitions 3808 [2023-11-19 05:08:33,933 INFO L134 LiptonReduction]: Checked pairs total: 10030 [2023-11-19 05:08:33,933 INFO L136 LiptonReduction]: Total number of compositions: 91 [2023-11-19 05:08:33,935 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 61 places, 54 transitions, 144 flow [2023-11-19 05:08:35,255 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 20039 states, 20033 states have (on average 4.8991663754804575) internal successors, (98145), 20038 states have internal predecessors, (98145), 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) [2023-11-19 05:08:35,257 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:08:35,258 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;@392b2c35, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:08:35,259 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-19 05:08:35,315 INFO L276 IsEmpty]: Start isEmpty. Operand has 20039 states, 20033 states have (on average 4.8991663754804575) internal successors, (98145), 20038 states have internal predecessors, (98145), 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) [2023-11-19 05:08:35,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 05:08:35,316 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:35,316 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 05:08:35,316 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 05:08:35,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:35,317 INFO L85 PathProgramCache]: Analyzing trace with hash 691839607, now seen corresponding path program 1 times [2023-11-19 05:08:35,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:08:35,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158364152] [2023-11-19 05:08:35,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:35,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:08:35,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:35,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:08:35,367 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:08:35,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158364152] [2023-11-19 05:08:35,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158364152] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:08:35,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:08:35,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 05:08:35,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925781812] [2023-11-19 05:08:35,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:08:35,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:08:35,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:08:35,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:08:35,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:08:35,534 INFO L87 Difference]: Start difference. First operand has 20039 states, 20033 states have (on average 4.8991663754804575) internal successors, (98145), 20038 states have internal predecessors, (98145), 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 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2023-11-19 05:08:36,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:08:36,248 INFO L93 Difference]: Finished difference Result 15865 states and 74414 transitions. [2023-11-19 05:08:36,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:08:36,249 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2023-11-19 05:08:36,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:08:36,807 INFO L225 Difference]: With dead ends: 15865 [2023-11-19 05:08:36,807 INFO L226 Difference]: Without dead ends: 15865 [2023-11-19 05:08:36,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:08:36,809 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 26 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:08:36,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 42 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:08:37,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15865 states. [2023-11-19 05:08:38,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15865 to 15865. [2023-11-19 05:08:38,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15865 states, 15865 states have (on average 4.690450677592184) internal successors, (74414), 15864 states have internal predecessors, (74414), 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) [2023-11-19 05:08:38,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15865 states to 15865 states and 74414 transitions. [2023-11-19 05:08:38,322 INFO L78 Accepts]: Start accepts. Automaton has 15865 states and 74414 transitions. Word has length 5 [2023-11-19 05:08:38,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:08:38,324 INFO L495 AbstractCegarLoop]: Abstraction has 15865 states and 74414 transitions. [2023-11-19 05:08:38,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2023-11-19 05:08:38,324 INFO L276 IsEmpty]: Start isEmpty. Operand 15865 states and 74414 transitions. [2023-11-19 05:08:38,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-19 05:08:38,326 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:38,326 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:08:38,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 05:08:38,327 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 05:08:38,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:38,328 INFO L85 PathProgramCache]: Analyzing trace with hash -2131215281, now seen corresponding path program 1 times [2023-11-19 05:08:38,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:08:38,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623732101] [2023-11-19 05:08:38,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:38,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:08:38,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:38,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:08:38,652 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:08:38,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623732101] [2023-11-19 05:08:38,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623732101] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:08:38,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:08:38,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:08:38,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400472443] [2023-11-19 05:08:38,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:08:38,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:08:38,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:08:38,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:08:38,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:08:38,656 INFO L87 Difference]: Start difference. First operand 15865 states and 74414 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2023-11-19 05:08:38,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:08:38,735 INFO L93 Difference]: Finished difference Result 1598 states and 5330 transitions. [2023-11-19 05:08:38,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:08:38,736 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 13 [2023-11-19 05:08:38,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:08:38,752 INFO L225 Difference]: With dead ends: 1598 [2023-11-19 05:08:38,752 INFO L226 Difference]: Without dead ends: 1598 [2023-11-19 05:08:38,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:08:38,753 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 24 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:08:38,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 37 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:08:38,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1598 states. [2023-11-19 05:08:38,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1598 to 1278. [2023-11-19 05:08:38,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1278 states, 1277 states have (on average 3.371965544244323) internal successors, (4306), 1277 states have internal predecessors, (4306), 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) [2023-11-19 05:08:38,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1278 states to 1278 states and 4306 transitions. [2023-11-19 05:08:38,815 INFO L78 Accepts]: Start accepts. Automaton has 1278 states and 4306 transitions. Word has length 13 [2023-11-19 05:08:38,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:08:38,816 INFO L495 AbstractCegarLoop]: Abstraction has 1278 states and 4306 transitions. [2023-11-19 05:08:38,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2023-11-19 05:08:38,816 INFO L276 IsEmpty]: Start isEmpty. Operand 1278 states and 4306 transitions. [2023-11-19 05:08:38,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-19 05:08:38,818 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:38,818 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:08:38,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 05:08:38,819 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 05:08:38,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:38,819 INFO L85 PathProgramCache]: Analyzing trace with hash 159457557, now seen corresponding path program 1 times [2023-11-19 05:08:38,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:08:38,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408537552] [2023-11-19 05:08:38,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:38,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:08:38,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:38,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:08:38,972 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:08:38,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408537552] [2023-11-19 05:08:38,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408537552] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:08:38,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:08:38,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:08:38,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801612264] [2023-11-19 05:08:38,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:08:38,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:08:38,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:08:38,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:08:38,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:08:38,975 INFO L87 Difference]: Start difference. First operand 1278 states and 4306 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 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) [2023-11-19 05:08:39,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:08:39,226 INFO L93 Difference]: Finished difference Result 2857 states and 9542 transitions. [2023-11-19 05:08:39,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 05:08:39,227 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 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 [2023-11-19 05:08:39,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:08:39,245 INFO L225 Difference]: With dead ends: 2857 [2023-11-19 05:08:39,245 INFO L226 Difference]: Without dead ends: 2857 [2023-11-19 05:08:39,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 05:08:39,247 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 71 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:08:39,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 87 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:08:39,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2857 states. [2023-11-19 05:08:39,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2857 to 2282. [2023-11-19 05:08:39,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2282 states, 2281 states have (on average 3.3397632617273127) internal successors, (7618), 2281 states have internal predecessors, (7618), 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) [2023-11-19 05:08:39,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2282 states to 2282 states and 7618 transitions. [2023-11-19 05:08:39,359 INFO L78 Accepts]: Start accepts. Automaton has 2282 states and 7618 transitions. Word has length 16 [2023-11-19 05:08:39,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:08:39,360 INFO L495 AbstractCegarLoop]: Abstraction has 2282 states and 7618 transitions. [2023-11-19 05:08:39,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 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) [2023-11-19 05:08:39,361 INFO L276 IsEmpty]: Start isEmpty. Operand 2282 states and 7618 transitions. [2023-11-19 05:08:39,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-19 05:08:39,363 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:39,364 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:08:39,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 05:08:39,364 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 05:08:39,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:39,365 INFO L85 PathProgramCache]: Analyzing trace with hash -842417916, now seen corresponding path program 1 times [2023-11-19 05:08:39,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:08:39,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371298372] [2023-11-19 05:08:39,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:39,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:08:39,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 05:08:39,392 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 05:08:39,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 05:08:39,415 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-19 05:08:39,416 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 05:08:39,418 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2023-11-19 05:08:39,418 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-11-19 05:08:39,426 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-11-19 05:08:39,426 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2023-11-19 05:08:39,428 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-11-19 05:08:39,428 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-11-19 05:08:39,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 05:08:39,429 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-19 05:08:39,429 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 05:08:39,429 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-19 05:08:39,483 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 05:08:39,487 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-19 05:08:39,487 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 153 places, 156 transitions, 368 flow [2023-11-19 05:08:39,488 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 153 places, 156 transitions, 368 flow [2023-11-19 05:08:39,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 156 transitions, 368 flow [2023-11-19 05:08:39,538 INFO L124 PetriNetUnfolderBase]: 16/160 cut-off events. [2023-11-19 05:08:39,538 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-19 05:08:39,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 160 events. 16/160 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 331 event pairs, 0 based on Foata normal form. 0/138 useless extension candidates. Maximal degree in co-relation 176. Up to 10 conditions per place. [2023-11-19 05:08:39,549 INFO L119 LiptonReduction]: Number of co-enabled transitions 5656 [2023-11-19 05:08:42,413 INFO L134 LiptonReduction]: Checked pairs total: 17101 [2023-11-19 05:08:42,414 INFO L136 LiptonReduction]: Total number of compositions: 118 [2023-11-19 05:08:42,415 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 77 places, 68 transitions, 192 flow [2023-11-19 05:08:51,563 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 160327 states, 160320 states have (on average 5.897611027944111) internal successors, (945505), 160326 states have internal predecessors, (945505), 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) [2023-11-19 05:08:51,584 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:08:51,585 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;@392b2c35, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:08:51,586 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-19 05:08:52,606 INFO L276 IsEmpty]: Start isEmpty. Operand has 160327 states, 160320 states have (on average 5.897611027944111) internal successors, (945505), 160326 states have internal predecessors, (945505), 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) [2023-11-19 05:08:52,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 05:08:52,607 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:52,607 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 05:08:52,607 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 05:08:52,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:52,608 INFO L85 PathProgramCache]: Analyzing trace with hash 980146066, now seen corresponding path program 1 times [2023-11-19 05:08:52,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:08:52,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272461358] [2023-11-19 05:08:52,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:52,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:08:52,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:52,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:08:52,648 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:08:52,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272461358] [2023-11-19 05:08:52,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272461358] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:08:52,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:08:52,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 05:08:52,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446410318] [2023-11-19 05:08:52,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:08:52,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:08:52,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:08:52,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:08:52,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:08:52,988 INFO L87 Difference]: Start difference. First operand has 160327 states, 160320 states have (on average 5.897611027944111) internal successors, (945505), 160326 states have internal predecessors, (945505), 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 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2023-11-19 05:08:55,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:08:55,759 INFO L93 Difference]: Finished difference Result 110357 states and 627513 transitions. [2023-11-19 05:08:55,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:08:55,759 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2023-11-19 05:08:55,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:08:57,499 INFO L225 Difference]: With dead ends: 110357 [2023-11-19 05:08:57,499 INFO L226 Difference]: Without dead ends: 110357 [2023-11-19 05:08:57,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:08:57,501 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 32 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:08:57,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 52 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:08:57,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110357 states. [2023-11-19 05:09:03,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110357 to 110357. [2023-11-19 05:09:03,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110357 states, 110357 states have (on average 5.686209302536314) internal successors, (627513), 110356 states have internal predecessors, (627513), 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) [2023-11-19 05:09:05,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110357 states to 110357 states and 627513 transitions. [2023-11-19 05:09:05,816 INFO L78 Accepts]: Start accepts. Automaton has 110357 states and 627513 transitions. Word has length 5 [2023-11-19 05:09:05,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:09:05,817 INFO L495 AbstractCegarLoop]: Abstraction has 110357 states and 627513 transitions. [2023-11-19 05:09:05,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2023-11-19 05:09:05,817 INFO L276 IsEmpty]: Start isEmpty. Operand 110357 states and 627513 transitions. [2023-11-19 05:09:05,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-19 05:09:05,818 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:09:05,818 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:09:05,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 05:09:05,818 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 05:09:05,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:09:05,819 INFO L85 PathProgramCache]: Analyzing trace with hash -26817120, now seen corresponding path program 1 times [2023-11-19 05:09:05,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:09:05,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253948804] [2023-11-19 05:09:05,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:09:05,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:09:05,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat