./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe020_rmo.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49dfd29e-9ef3-48cb-bc2f-c58cf9a99bf3/bin/utaipan-verify-FOvIYxoinp/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49dfd29e-9ef3-48cb-bc2f-c58cf9a99bf3/bin/utaipan-verify-FOvIYxoinp/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49dfd29e-9ef3-48cb-bc2f-c58cf9a99bf3/bin/utaipan-verify-FOvIYxoinp/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49dfd29e-9ef3-48cb-bc2f-c58cf9a99bf3/bin/utaipan-verify-FOvIYxoinp/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe020_rmo.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49dfd29e-9ef3-48cb-bc2f-c58cf9a99bf3/bin/utaipan-verify-FOvIYxoinp/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49dfd29e-9ef3-48cb-bc2f-c58cf9a99bf3/bin/utaipan-verify-FOvIYxoinp --witnessprinter.witness.filename witness.graphml --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 d52a8576f41904f21a1a217cd81ed2d36ac8928d5a02d745a0c93a101e2535cf --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 20:35:07,890 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 20:35:08,005 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49dfd29e-9ef3-48cb-bc2f-c58cf9a99bf3/bin/utaipan-verify-FOvIYxoinp/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-06 20:35:08,010 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 20:35:08,011 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 20:35:08,039 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 20:35:08,040 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 20:35:08,040 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 20:35:08,041 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 20:35:08,042 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 20:35:08,043 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-06 20:35:08,043 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-06 20:35:08,044 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-06 20:35:08,045 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-06 20:35:08,046 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-06 20:35:08,046 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-06 20:35:08,047 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-06 20:35:08,048 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-06 20:35:08,048 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-06 20:35:08,049 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-06 20:35:08,050 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-06 20:35:08,051 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-06 20:35:08,052 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 20:35:08,053 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 20:35:08,053 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 20:35:08,054 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 20:35:08,055 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 20:35:08,055 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 20:35:08,056 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 20:35:08,056 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 20:35:08,057 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 20:35:08,058 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 20:35:08,058 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 20:35:08,059 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 20:35:08,059 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 20:35:08,060 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 20:35:08,060 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 20:35:08,060 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 20:35:08,061 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 20:35:08,061 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 20:35:08,061 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-06 20:35:08,062 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 20:35:08,062 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 20:35:08,063 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-06 20:35:08,063 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 20:35:08,064 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_49dfd29e-9ef3-48cb-bc2f-c58cf9a99bf3/bin/utaipan-verify-FOvIYxoinp/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49dfd29e-9ef3-48cb-bc2f-c58cf9a99bf3/bin/utaipan-verify-FOvIYxoinp Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d52a8576f41904f21a1a217cd81ed2d36ac8928d5a02d745a0c93a101e2535cf [2023-11-06 20:35:08,353 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 20:35:08,385 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 20:35:08,388 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 20:35:08,389 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 20:35:08,390 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 20:35:08,392 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49dfd29e-9ef3-48cb-bc2f-c58cf9a99bf3/bin/utaipan-verify-FOvIYxoinp/../../sv-benchmarks/c/pthread-wmm/safe020_rmo.i [2023-11-06 20:35:11,622 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 20:35:12,048 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 20:35:12,048 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49dfd29e-9ef3-48cb-bc2f-c58cf9a99bf3/sv-benchmarks/c/pthread-wmm/safe020_rmo.i [2023-11-06 20:35:12,075 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49dfd29e-9ef3-48cb-bc2f-c58cf9a99bf3/bin/utaipan-verify-FOvIYxoinp/data/2c8a78084/ef1767352f424d10a5a9af5a4366a1ee/FLAG5f5d8f060 [2023-11-06 20:35:12,093 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49dfd29e-9ef3-48cb-bc2f-c58cf9a99bf3/bin/utaipan-verify-FOvIYxoinp/data/2c8a78084/ef1767352f424d10a5a9af5a4366a1ee [2023-11-06 20:35:12,100 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 20:35:12,102 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 20:35:12,104 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 20:35:12,104 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 20:35:12,109 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 20:35:12,110 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:35:12" (1/1) ... [2023-11-06 20:35:12,111 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@302e5b68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:35:12, skipping insertion in model container [2023-11-06 20:35:12,111 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:35:12" (1/1) ... [2023-11-06 20:35:12,186 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 20:35:12,349 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_49dfd29e-9ef3-48cb-bc2f-c58cf9a99bf3/sv-benchmarks/c/pthread-wmm/safe020_rmo.i[988,1001] [2023-11-06 20:35:12,604 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 20:35:12,620 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 20:35:12,634 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_49dfd29e-9ef3-48cb-bc2f-c58cf9a99bf3/sv-benchmarks/c/pthread-wmm/safe020_rmo.i[988,1001] [2023-11-06 20:35:12,686 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 20:35:12,720 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 20:35:12,720 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 20:35:12,728 INFO L206 MainTranslator]: Completed translation [2023-11-06 20:35:12,728 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:35:12 WrapperNode [2023-11-06 20:35:12,728 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 20:35:12,729 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 20:35:12,730 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 20:35:12,730 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 20:35:12,736 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:35:12" (1/1) ... [2023-11-06 20:35:12,756 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:35:12" (1/1) ... [2023-11-06 20:35:12,783 INFO L138 Inliner]: procedures = 176, calls = 75, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 135 [2023-11-06 20:35:12,783 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 20:35:12,784 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 20:35:12,784 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 20:35:12,784 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 20:35:12,795 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:35:12" (1/1) ... [2023-11-06 20:35:12,795 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:35:12" (1/1) ... [2023-11-06 20:35:12,805 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:35:12" (1/1) ... [2023-11-06 20:35:12,805 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:35:12" (1/1) ... [2023-11-06 20:35:12,818 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:35:12" (1/1) ... [2023-11-06 20:35:12,821 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:35:12" (1/1) ... [2023-11-06 20:35:12,825 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:35:12" (1/1) ... [2023-11-06 20:35:12,827 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:35:12" (1/1) ... [2023-11-06 20:35:12,833 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 20:35:12,834 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 20:35:12,839 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 20:35:12,839 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 20:35:12,840 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:35:12" (1/1) ... [2023-11-06 20:35:12,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 20:35:12,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49dfd29e-9ef3-48cb-bc2f-c58cf9a99bf3/bin/utaipan-verify-FOvIYxoinp/z3 [2023-11-06 20:35:12,876 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49dfd29e-9ef3-48cb-bc2f-c58cf9a99bf3/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 20:35:12,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49dfd29e-9ef3-48cb-bc2f-c58cf9a99bf3/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 20:35:12,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 20:35:12,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 20:35:12,930 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 20:35:12,931 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 20:35:12,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 20:35:12,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 20:35:12,934 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-06 20:35:12,934 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-06 20:35:12,934 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-06 20:35:12,934 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-06 20:35:12,934 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-06 20:35:12,935 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-06 20:35:12,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 20:35:12,935 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 20:35:12,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 20:35:12,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 20:35:12,938 WARN L210 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 20:35:13,179 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 20:35:13,181 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 20:35:13,737 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 20:35:14,082 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 20:35:14,082 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 20:35:14,085 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:35:14 BoogieIcfgContainer [2023-11-06 20:35:14,086 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 20:35:14,088 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 20:35:14,088 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 20:35:14,092 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 20:35:14,093 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 08:35:12" (1/3) ... [2023-11-06 20:35:14,094 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f8d0ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:35:14, skipping insertion in model container [2023-11-06 20:35:14,094 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:35:12" (2/3) ... [2023-11-06 20:35:14,094 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f8d0ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:35:14, skipping insertion in model container [2023-11-06 20:35:14,095 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:35:14" (3/3) ... [2023-11-06 20:35:14,096 INFO L112 eAbstractionObserver]: Analyzing ICFG safe020_rmo.i [2023-11-06 20:35:14,107 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 20:35:14,120 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 20:35:14,120 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 20:35:14,120 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 20:35:14,212 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 20:35:14,269 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-06 20:35:14,285 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 134 places, 126 transitions, 264 flow [2023-11-06 20:35:14,288 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 134 places, 126 transitions, 264 flow [2023-11-06 20:35:14,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 126 transitions, 264 flow [2023-11-06 20:35:14,355 INFO L124 PetriNetUnfolderBase]: 2/123 cut-off events. [2023-11-06 20:35:14,355 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 20:35:14,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133 conditions, 123 events. 2/123 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 70. Up to 2 conditions per place. [2023-11-06 20:35:14,364 INFO L119 LiptonReduction]: Number of co-enabled transitions 1746 [2023-11-06 20:35:23,936 INFO L134 LiptonReduction]: Checked pairs total: 4311 [2023-11-06 20:35:23,937 INFO L136 LiptonReduction]: Total number of compositions: 114 [2023-11-06 20:35:23,948 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 34 places, 25 transitions, 62 flow [2023-11-06 20:35:24,038 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 442 states, 441 states have (on average 3.2108843537414966) internal successors, (1416), 441 states have internal predecessors, (1416), 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) [2023-11-06 20:35:24,060 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 20:35:24,068 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=LoopsAndPotentialCycles, 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;@1c1d61e3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-06 20:35:24,068 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-06 20:35:24,073 INFO L276 IsEmpty]: Start isEmpty. Operand has 442 states, 441 states have (on average 3.2108843537414966) internal successors, (1416), 441 states have internal predecessors, (1416), 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) [2023-11-06 20:35:24,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-06 20:35:24,080 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:35:24,081 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:35:24,081 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 20:35:24,087 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:35:24,087 INFO L85 PathProgramCache]: Analyzing trace with hash -541251918, now seen corresponding path program 1 times [2023-11-06 20:35:24,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:35:24,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545960879] [2023-11-06 20:35:24,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:35:24,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:35:24,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:35:24,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:35:24,450 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:35:24,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545960879] [2023-11-06 20:35:24,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545960879] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:35:24,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:35:24,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 20:35:24,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440790942] [2023-11-06 20:35:24,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:35:24,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 20:35:24,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:35:24,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 20:35:24,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 20:35:24,505 INFO L87 Difference]: Start difference. First operand has 442 states, 441 states have (on average 3.2108843537414966) internal successors, (1416), 441 states have internal predecessors, (1416), 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 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2023-11-06 20:35:24,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:35:24,607 INFO L93 Difference]: Finished difference Result 442 states and 1336 transitions. [2023-11-06 20:35:24,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 20:35:24,610 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2023-11-06 20:35:24,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:35:24,662 INFO L225 Difference]: With dead ends: 442 [2023-11-06 20:35:24,665 INFO L226 Difference]: Without dead ends: 442 [2023-11-06 20:35:24,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 20:35:24,670 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 20:35:24,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 20:35:24,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2023-11-06 20:35:24,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 442. [2023-11-06 20:35:24,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 441 states have (on average 3.0294784580498866) internal successors, (1336), 441 states have internal predecessors, (1336), 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) [2023-11-06 20:35:24,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 1336 transitions. [2023-11-06 20:35:24,758 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 1336 transitions. Word has length 8 [2023-11-06 20:35:24,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:35:24,759 INFO L495 AbstractCegarLoop]: Abstraction has 442 states and 1336 transitions. [2023-11-06 20:35:24,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2023-11-06 20:35:24,760 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 1336 transitions. [2023-11-06 20:35:24,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-06 20:35:24,762 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:35:24,762 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:35:24,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 20:35:24,763 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 20:35:24,764 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:35:24,764 INFO L85 PathProgramCache]: Analyzing trace with hash -452264630, now seen corresponding path program 1 times [2023-11-06 20:35:24,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:35:24,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254254854] [2023-11-06 20:35:24,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:35:24,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:35:24,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:35:25,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:35:25,371 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:35:25,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254254854] [2023-11-06 20:35:25,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254254854] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:35:25,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:35:25,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 20:35:25,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498598809] [2023-11-06 20:35:25,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:35:25,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 20:35:25,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:35:25,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 20:35:25,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 20:35:25,376 INFO L87 Difference]: Start difference. First operand 442 states and 1336 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2023-11-06 20:35:25,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:35:25,569 INFO L93 Difference]: Finished difference Result 490 states and 1424 transitions. [2023-11-06 20:35:25,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 20:35:25,570 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 10 [2023-11-06 20:35:25,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:35:25,575 INFO L225 Difference]: With dead ends: 490 [2023-11-06 20:35:25,576 INFO L226 Difference]: Without dead ends: 410 [2023-11-06 20:35:25,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 20:35:25,583 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 22 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 20:35:25,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 5 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 20:35:25,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2023-11-06 20:35:25,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 410. [2023-11-06 20:35:25,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 409 states have (on average 2.9926650366748166) internal successors, (1224), 409 states have internal predecessors, (1224), 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) [2023-11-06 20:35:25,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 1224 transitions. [2023-11-06 20:35:25,630 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 1224 transitions. Word has length 10 [2023-11-06 20:35:25,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:35:25,630 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 1224 transitions. [2023-11-06 20:35:25,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2023-11-06 20:35:25,631 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 1224 transitions. [2023-11-06 20:35:25,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-06 20:35:25,636 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:35:25,636 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:35:25,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 20:35:25,642 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 20:35:25,643 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:35:25,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1187360662, now seen corresponding path program 1 times [2023-11-06 20:35:25,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:35:25,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787879296] [2023-11-06 20:35:25,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:35:25,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:35:25,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:35:26,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:35:26,043 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:35:26,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787879296] [2023-11-06 20:35:26,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787879296] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:35:26,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:35:26,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 20:35:26,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824020883] [2023-11-06 20:35:26,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:35:26,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 20:35:26,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:35:26,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 20:35:26,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 20:35:26,045 INFO L87 Difference]: Start difference. First operand 410 states and 1224 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2023-11-06 20:35:26,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:35:26,190 INFO L93 Difference]: Finished difference Result 466 states and 1342 transitions. [2023-11-06 20:35:26,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 20:35:26,190 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2023-11-06 20:35:26,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:35:26,195 INFO L225 Difference]: With dead ends: 466 [2023-11-06 20:35:26,195 INFO L226 Difference]: Without dead ends: 402 [2023-11-06 20:35:26,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 20:35:26,197 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 18 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 20:35:26,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 3 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 20:35:26,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2023-11-06 20:35:26,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 402. [2023-11-06 20:35:26,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 401 states have (on average 2.9775561097256857) internal successors, (1194), 401 states have internal predecessors, (1194), 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) [2023-11-06 20:35:26,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 1194 transitions. [2023-11-06 20:35:26,218 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 1194 transitions. Word has length 11 [2023-11-06 20:35:26,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:35:26,218 INFO L495 AbstractCegarLoop]: Abstraction has 402 states and 1194 transitions. [2023-11-06 20:35:26,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2023-11-06 20:35:26,219 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 1194 transitions. [2023-11-06 20:35:26,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-06 20:35:26,221 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:35:26,221 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:35:26,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 20:35:26,222 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 20:35:26,222 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:35:26,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1750137114, now seen corresponding path program 1 times [2023-11-06 20:35:26,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:35:26,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012882534] [2023-11-06 20:35:26,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:35:26,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:35:26,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:35:26,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:35:26,526 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:35:26,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012882534] [2023-11-06 20:35:26,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012882534] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:35:26,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:35:26,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 20:35:26,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334289074] [2023-11-06 20:35:26,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:35:26,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 20:35:26,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:35:26,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 20:35:26,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 20:35:26,533 INFO L87 Difference]: Start difference. First operand 402 states and 1194 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2023-11-06 20:35:26,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:35:26,725 INFO L93 Difference]: Finished difference Result 642 states and 1822 transitions. [2023-11-06 20:35:26,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 20:35:26,726 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2023-11-06 20:35:26,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:35:26,730 INFO L225 Difference]: With dead ends: 642 [2023-11-06 20:35:26,730 INFO L226 Difference]: Without dead ends: 450 [2023-11-06 20:35:26,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 20:35:26,732 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 22 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 20:35:26,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 2 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 20:35:26,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2023-11-06 20:35:26,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 378. [2023-11-06 20:35:26,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 377 states have (on average 2.854111405835544) internal successors, (1076), 377 states have internal predecessors, (1076), 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) [2023-11-06 20:35:26,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 1076 transitions. [2023-11-06 20:35:26,757 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 1076 transitions. Word has length 12 [2023-11-06 20:35:26,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:35:26,759 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 1076 transitions. [2023-11-06 20:35:26,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2023-11-06 20:35:26,761 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 1076 transitions. [2023-11-06 20:35:26,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-06 20:35:26,762 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:35:26,763 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:35:26,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 20:35:26,763 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 20:35:26,764 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:35:26,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1846503311, now seen corresponding path program 1 times [2023-11-06 20:35:26,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:35:26,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828688053] [2023-11-06 20:35:26,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:35:26,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:35:26,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:35:27,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:35:27,192 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:35:27,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828688053] [2023-11-06 20:35:27,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828688053] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:35:27,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:35:27,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 20:35:27,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923189861] [2023-11-06 20:35:27,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:35:27,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 20:35:27,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:35:27,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 20:35:27,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 20:35:27,196 INFO L87 Difference]: Start difference. First operand 378 states and 1076 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2023-11-06 20:35:27,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:35:27,285 INFO L93 Difference]: Finished difference Result 270 states and 656 transitions. [2023-11-06 20:35:27,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 20:35:27,286 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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 12 [2023-11-06 20:35:27,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:35:27,289 INFO L225 Difference]: With dead ends: 270 [2023-11-06 20:35:27,290 INFO L226 Difference]: Without dead ends: 270 [2023-11-06 20:35:27,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 20:35:27,291 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 6 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 20:35:27,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 20:35:27,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2023-11-06 20:35:27,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 270. [2023-11-06 20:35:27,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 269 states have (on average 2.4386617100371746) internal successors, (656), 269 states have internal predecessors, (656), 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) [2023-11-06 20:35:27,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 656 transitions. [2023-11-06 20:35:27,305 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 656 transitions. Word has length 12 [2023-11-06 20:35:27,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:35:27,306 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 656 transitions. [2023-11-06 20:35:27,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2023-11-06 20:35:27,311 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 656 transitions. [2023-11-06 20:35:27,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-06 20:35:27,312 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:35:27,313 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:35:27,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 20:35:27,313 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 20:35:27,314 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:35:27,314 INFO L85 PathProgramCache]: Analyzing trace with hash -2040607642, now seen corresponding path program 1 times [2023-11-06 20:35:27,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:35:27,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789226609] [2023-11-06 20:35:27,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:35:27,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:35:27,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:35:29,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:35:29,608 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:35:29,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789226609] [2023-11-06 20:35:29,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789226609] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:35:29,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:35:29,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 20:35:29,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849265926] [2023-11-06 20:35:29,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:35:29,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 20:35:29,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:35:29,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 20:35:29,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-06 20:35:29,613 INFO L87 Difference]: Start difference. First operand 270 states and 656 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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) [2023-11-06 20:35:30,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:35:30,239 INFO L93 Difference]: Finished difference Result 442 states and 1042 transitions. [2023-11-06 20:35:30,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 20:35:30,240 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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 14 [2023-11-06 20:35:30,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:35:30,243 INFO L225 Difference]: With dead ends: 442 [2023-11-06 20:35:30,244 INFO L226 Difference]: Without dead ends: 400 [2023-11-06 20:35:30,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2023-11-06 20:35:30,245 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 64 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 20:35:30,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 8 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 20:35:30,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2023-11-06 20:35:30,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 336. [2023-11-06 20:35:30,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 335 states have (on average 2.4388059701492537) internal successors, (817), 335 states have internal predecessors, (817), 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) [2023-11-06 20:35:30,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 817 transitions. [2023-11-06 20:35:30,261 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 817 transitions. Word has length 14 [2023-11-06 20:35:30,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:35:30,261 INFO L495 AbstractCegarLoop]: Abstraction has 336 states and 817 transitions. [2023-11-06 20:35:30,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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) [2023-11-06 20:35:30,262 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 817 transitions. [2023-11-06 20:35:30,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-06 20:35:30,263 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:35:30,263 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:35:30,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 20:35:30,264 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 20:35:30,264 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:35:30,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1406188752, now seen corresponding path program 2 times [2023-11-06 20:35:30,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:35:30,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905311401] [2023-11-06 20:35:30,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:35:30,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:35:30,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:35:31,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:35:31,862 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:35:31,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905311401] [2023-11-06 20:35:31,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905311401] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:35:31,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:35:31,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 20:35:31,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821808824] [2023-11-06 20:35:31,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:35:31,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 20:35:31,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:35:31,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 20:35:31,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-06 20:35:31,864 INFO L87 Difference]: Start difference. First operand 336 states and 817 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 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) [2023-11-06 20:35:32,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:35:32,357 INFO L93 Difference]: Finished difference Result 514 states and 1184 transitions. [2023-11-06 20:35:32,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 20:35:32,357 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 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 14 [2023-11-06 20:35:32,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:35:32,361 INFO L225 Difference]: With dead ends: 514 [2023-11-06 20:35:32,361 INFO L226 Difference]: Without dead ends: 458 [2023-11-06 20:35:32,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-11-06 20:35:32,362 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 37 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 20:35:32,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 12 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 20:35:32,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2023-11-06 20:35:32,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 338. [2023-11-06 20:35:32,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 337 states have (on average 2.4183976261127595) internal successors, (815), 337 states have internal predecessors, (815), 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) [2023-11-06 20:35:32,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 815 transitions. [2023-11-06 20:35:32,377 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 815 transitions. Word has length 14 [2023-11-06 20:35:32,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:35:32,377 INFO L495 AbstractCegarLoop]: Abstraction has 338 states and 815 transitions. [2023-11-06 20:35:32,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 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) [2023-11-06 20:35:32,378 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 815 transitions. [2023-11-06 20:35:32,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-06 20:35:32,379 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:35:32,379 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:35:32,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 20:35:32,379 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 20:35:32,380 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:35:32,380 INFO L85 PathProgramCache]: Analyzing trace with hash 999202252, now seen corresponding path program 3 times [2023-11-06 20:35:32,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:35:32,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104018122] [2023-11-06 20:35:32,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:35:32,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:35:32,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:35:32,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:35:32,625 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:35:32,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104018122] [2023-11-06 20:35:32,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104018122] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:35:32,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:35:32,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 20:35:32,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448353817] [2023-11-06 20:35:32,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:35:32,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 20:35:32,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:35:32,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 20:35:32,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 20:35:32,628 INFO L87 Difference]: Start difference. First operand 338 states and 815 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 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) [2023-11-06 20:35:32,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:35:32,732 INFO L93 Difference]: Finished difference Result 200 states and 419 transitions. [2023-11-06 20:35:32,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 20:35:32,733 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 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 14 [2023-11-06 20:35:32,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:35:32,735 INFO L225 Difference]: With dead ends: 200 [2023-11-06 20:35:32,735 INFO L226 Difference]: Without dead ends: 194 [2023-11-06 20:35:32,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 20:35:32,736 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 15 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 20:35:32,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 3 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 20:35:32,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2023-11-06 20:35:32,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 180. [2023-11-06 20:35:32,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 2.0726256983240225) internal successors, (371), 179 states have internal predecessors, (371), 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) [2023-11-06 20:35:32,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 371 transitions. [2023-11-06 20:35:32,743 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 371 transitions. Word has length 14 [2023-11-06 20:35:32,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:35:32,743 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 371 transitions. [2023-11-06 20:35:32,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 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) [2023-11-06 20:35:32,744 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 371 transitions. [2023-11-06 20:35:32,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-06 20:35:32,745 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:35:32,745 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:35:32,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 20:35:32,745 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 20:35:32,746 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:35:32,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1271064737, now seen corresponding path program 1 times [2023-11-06 20:35:32,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:35:32,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169432221] [2023-11-06 20:35:32,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:35:32,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:35:32,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:35:35,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:35:35,088 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:35:35,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169432221] [2023-11-06 20:35:35,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169432221] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:35:35,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:35:35,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 20:35:35,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610578605] [2023-11-06 20:35:35,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:35:35,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 20:35:35,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:35:35,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 20:35:35,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-06 20:35:35,090 INFO L87 Difference]: Start difference. First operand 180 states and 371 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 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) [2023-11-06 20:35:35,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:35:35,646 INFO L93 Difference]: Finished difference Result 279 states and 542 transitions. [2023-11-06 20:35:35,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 20:35:35,647 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 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 17 [2023-11-06 20:35:35,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:35:35,648 INFO L225 Difference]: With dead ends: 279 [2023-11-06 20:35:35,649 INFO L226 Difference]: Without dead ends: 221 [2023-11-06 20:35:35,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2023-11-06 20:35:35,650 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 31 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 20:35:35,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 7 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 20:35:35,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2023-11-06 20:35:35,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 191. [2023-11-06 20:35:35,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 190 states have (on average 2.031578947368421) internal successors, (386), 190 states have internal predecessors, (386), 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) [2023-11-06 20:35:35,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 386 transitions. [2023-11-06 20:35:35,658 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 386 transitions. Word has length 17 [2023-11-06 20:35:35,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:35:35,658 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 386 transitions. [2023-11-06 20:35:35,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 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) [2023-11-06 20:35:35,659 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 386 transitions. [2023-11-06 20:35:35,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-06 20:35:35,660 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:35:35,660 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:35:35,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 20:35:35,660 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 20:35:35,661 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:35:35,661 INFO L85 PathProgramCache]: Analyzing trace with hash 960765290, now seen corresponding path program 1 times [2023-11-06 20:35:35,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:35:35,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203935514] [2023-11-06 20:35:35,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:35:35,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:35:35,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:35:36,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:35:36,589 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:35:36,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203935514] [2023-11-06 20:35:36,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203935514] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:35:36,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:35:36,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 20:35:36,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458777196] [2023-11-06 20:35:36,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:35:36,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 20:35:36,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:35:36,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 20:35:36,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-06 20:35:36,592 INFO L87 Difference]: Start difference. First operand 191 states and 386 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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) [2023-11-06 20:35:36,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:35:36,903 INFO L93 Difference]: Finished difference Result 352 states and 688 transitions. [2023-11-06 20:35:36,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 20:35:36,904 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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 17 [2023-11-06 20:35:36,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:35:36,906 INFO L225 Difference]: With dead ends: 352 [2023-11-06 20:35:36,906 INFO L226 Difference]: Without dead ends: 242 [2023-11-06 20:35:36,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-06 20:35:36,907 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 54 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 20:35:36,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 9 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 20:35:36,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2023-11-06 20:35:36,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 192. [2023-11-06 20:35:36,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 1.9476439790575917) internal successors, (372), 191 states have internal predecessors, (372), 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) [2023-11-06 20:35:36,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 372 transitions. [2023-11-06 20:35:36,915 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 372 transitions. Word has length 17 [2023-11-06 20:35:36,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:35:36,916 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 372 transitions. [2023-11-06 20:35:36,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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) [2023-11-06 20:35:36,916 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 372 transitions. [2023-11-06 20:35:36,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-06 20:35:36,917 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:35:36,917 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:35:36,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 20:35:36,918 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 20:35:36,918 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:35:36,918 INFO L85 PathProgramCache]: Analyzing trace with hash -392007574, now seen corresponding path program 2 times [2023-11-06 20:35:36,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:35:36,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143742327] [2023-11-06 20:35:36,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:35:36,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:35:36,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat