./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe002_tso.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_a59b1d2c-74ab-4590-a47b-50bb1cd0a543/bin/utaipan-verify-FOvIYxoinp/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59b1d2c-74ab-4590-a47b-50bb1cd0a543/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_a59b1d2c-74ab-4590-a47b-50bb1cd0a543/bin/utaipan-verify-FOvIYxoinp/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59b1d2c-74ab-4590-a47b-50bb1cd0a543/bin/utaipan-verify-FOvIYxoinp/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe002_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59b1d2c-74ab-4590-a47b-50bb1cd0a543/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_a59b1d2c-74ab-4590-a47b-50bb1cd0a543/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 3743abf17a0d3db70a931712c22f305431bb6e8feb7b662539ff9c5190491352 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:03:58,982 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:03:59,074 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59b1d2c-74ab-4590-a47b-50bb1cd0a543/bin/utaipan-verify-FOvIYxoinp/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-06 21:03:59,095 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:03:59,097 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:03:59,145 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:03:59,146 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:03:59,147 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:03:59,148 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:03:59,155 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:03:59,156 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-06 21:03:59,157 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-06 21:03:59,158 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-06 21:03:59,160 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-06 21:03:59,161 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-06 21:03:59,161 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-06 21:03:59,162 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-06 21:03:59,162 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-06 21:03:59,163 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-06 21:03:59,163 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-06 21:03:59,164 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-06 21:03:59,165 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-06 21:03:59,166 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:03:59,166 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 21:03:59,167 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:03:59,167 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:03:59,168 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:03:59,168 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:03:59,169 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 21:03:59,169 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:03:59,171 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 21:03:59,171 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:03:59,171 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 21:03:59,172 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:03:59,172 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:03:59,173 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:03:59,173 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:03:59,174 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:03:59,174 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:03:59,174 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 21:03:59,175 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-06 21:03:59,175 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:03:59,175 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 21:03:59,176 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-06 21:03:59,176 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:03:59,177 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_a59b1d2c-74ab-4590-a47b-50bb1cd0a543/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59b1d2c-74ab-4590-a47b-50bb1cd0a543/bin/utaipan-verify-FOvIYxoinp Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3743abf17a0d3db70a931712c22f305431bb6e8feb7b662539ff9c5190491352 [2023-11-06 21:03:59,503 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:03:59,533 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:03:59,536 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:03:59,537 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:03:59,538 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:03:59,539 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59b1d2c-74ab-4590-a47b-50bb1cd0a543/bin/utaipan-verify-FOvIYxoinp/../../sv-benchmarks/c/pthread-wmm/safe002_tso.i [2023-11-06 21:04:02,709 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:04:03,036 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:04:03,039 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59b1d2c-74ab-4590-a47b-50bb1cd0a543/sv-benchmarks/c/pthread-wmm/safe002_tso.i [2023-11-06 21:04:03,060 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59b1d2c-74ab-4590-a47b-50bb1cd0a543/bin/utaipan-verify-FOvIYxoinp/data/9ecee93fa/17e6a6b083004c24a9b6fc6af87035c7/FLAG5900944ac [2023-11-06 21:04:03,351 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59b1d2c-74ab-4590-a47b-50bb1cd0a543/bin/utaipan-verify-FOvIYxoinp/data/9ecee93fa/17e6a6b083004c24a9b6fc6af87035c7 [2023-11-06 21:04:03,354 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:04:03,356 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:04:03,358 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:04:03,358 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:04:03,365 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:04:03,366 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:04:03" (1/1) ... [2023-11-06 21:04:03,367 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7700218 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:04:03, skipping insertion in model container [2023-11-06 21:04:03,367 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:04:03" (1/1) ... [2023-11-06 21:04:03,436 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:04:03,593 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_a59b1d2c-74ab-4590-a47b-50bb1cd0a543/sv-benchmarks/c/pthread-wmm/safe002_tso.i[945,958] [2023-11-06 21:04:03,759 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:04:03,770 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:04:03,783 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_a59b1d2c-74ab-4590-a47b-50bb1cd0a543/sv-benchmarks/c/pthread-wmm/safe002_tso.i[945,958] [2023-11-06 21:04:03,813 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:04:03,849 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:04:03,850 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:04:03,858 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:04:03,858 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:04:03 WrapperNode [2023-11-06 21:04:03,858 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:04:03,860 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:04:03,860 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:04:03,860 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:04:03,868 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:04:03" (1/1) ... [2023-11-06 21:04:03,882 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:04:03" (1/1) ... [2023-11-06 21:04:03,906 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2023-11-06 21:04:03,907 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:04:03,907 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:04:03,907 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:04:03,908 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:04:03,917 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:04:03" (1/1) ... [2023-11-06 21:04:03,917 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:04:03" (1/1) ... [2023-11-06 21:04:03,920 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:04:03" (1/1) ... [2023-11-06 21:04:03,921 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:04:03" (1/1) ... [2023-11-06 21:04:03,927 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:04:03" (1/1) ... [2023-11-06 21:04:03,929 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:04:03" (1/1) ... [2023-11-06 21:04:03,931 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:04:03" (1/1) ... [2023-11-06 21:04:03,933 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:04:03" (1/1) ... [2023-11-06 21:04:03,936 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:04:03,937 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:04:03,938 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:04:03,938 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:04:03,939 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:04:03" (1/1) ... [2023-11-06 21:04:03,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:04:03,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59b1d2c-74ab-4590-a47b-50bb1cd0a543/bin/utaipan-verify-FOvIYxoinp/z3 [2023-11-06 21:04:03,981 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59b1d2c-74ab-4590-a47b-50bb1cd0a543/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:04:04,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59b1d2c-74ab-4590-a47b-50bb1cd0a543/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:04:04,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 21:04:04,026 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 21:04:04,027 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:04:04,027 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 21:04:04,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 21:04:04,029 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-06 21:04:04,029 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-06 21:04:04,029 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-06 21:04:04,030 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-06 21:04:04,030 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-06 21:04:04,030 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-06 21:04:04,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 21:04:04,030 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 21:04:04,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:04:04,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:04:04,033 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 21:04:04,238 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:04:04,241 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:04:04,427 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:04:04,435 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:04:04,435 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 21:04:04,438 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:04:04 BoogieIcfgContainer [2023-11-06 21:04:04,438 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:04:04,441 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:04:04,441 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:04:04,445 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:04:04,445 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:04:03" (1/3) ... [2023-11-06 21:04:04,446 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ebe827d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:04:04, skipping insertion in model container [2023-11-06 21:04:04,446 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:04:03" (2/3) ... [2023-11-06 21:04:04,447 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ebe827d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:04:04, skipping insertion in model container [2023-11-06 21:04:04,447 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:04:04" (3/3) ... [2023-11-06 21:04:04,448 INFO L112 eAbstractionObserver]: Analyzing ICFG safe002_tso.i [2023-11-06 21:04:04,458 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 21:04:04,470 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:04:04,470 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 21:04:04,470 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 21:04:04,541 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 21:04:04,598 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-06 21:04:04,627 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 96 places, 88 transitions, 188 flow [2023-11-06 21:04:04,630 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 96 places, 88 transitions, 188 flow [2023-11-06 21:04:04,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 88 transitions, 188 flow [2023-11-06 21:04:04,721 INFO L124 PetriNetUnfolderBase]: 2/85 cut-off events. [2023-11-06 21:04:04,721 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 21:04:04,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 85 events. 2/85 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2023-11-06 21:04:04,731 INFO L119 LiptonReduction]: Number of co-enabled transitions 1620 [2023-11-06 21:04:07,899 INFO L134 LiptonReduction]: Checked pairs total: 3139 [2023-11-06 21:04:07,900 INFO L136 LiptonReduction]: Total number of compositions: 78 [2023-11-06 21:04:07,911 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 54 flow [2023-11-06 21:04:07,955 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 234 states, 233 states have (on average 2.815450643776824) internal successors, (656), 233 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 21:04:07,980 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:04:07,988 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;@579958c6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-06 21:04:07,988 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-06 21:04:07,993 INFO L276 IsEmpty]: Start isEmpty. Operand has 234 states, 233 states have (on average 2.815450643776824) internal successors, (656), 233 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 21:04:08,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-06 21:04:08,001 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:04:08,001 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:04:08,002 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 21:04:08,010 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:04:08,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1839660835, now seen corresponding path program 1 times [2023-11-06 21:04:08,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 21:04:08,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601585147] [2023-11-06 21:04:08,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:04:08,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:04:08,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:04:08,705 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 21:04:08,706 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 21:04:08,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601585147] [2023-11-06 21:04:08,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601585147] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:04:08,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:04:08,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 21:04:08,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555016210] [2023-11-06 21:04:08,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:04:08,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:04:08,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 21:04:08,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:04:08,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:04:08,749 INFO L87 Difference]: Start difference. First operand has 234 states, 233 states have (on average 2.815450643776824) internal successors, (656), 233 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) Second operand has 3 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 21:04:08,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:04:08,842 INFO L93 Difference]: Finished difference Result 340 states and 896 transitions. [2023-11-06 21:04:08,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:04:08,849 INFO L78 Accepts]: Start accepts. Automaton has has 3 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 21:04:08,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:04:08,869 INFO L225 Difference]: With dead ends: 340 [2023-11-06 21:04:08,873 INFO L226 Difference]: Without dead ends: 324 [2023-11-06 21:04:08,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:04:08,879 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 4 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:04:08,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 4 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:04:08,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2023-11-06 21:04:08,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 290. [2023-11-06 21:04:08,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 289 states have (on average 2.7197231833910034) internal successors, (786), 289 states have internal predecessors, (786), 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 21:04:08,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 786 transitions. [2023-11-06 21:04:08,987 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 786 transitions. Word has length 8 [2023-11-06 21:04:08,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:04:08,989 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 786 transitions. [2023-11-06 21:04:08,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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 21:04:08,993 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 786 transitions. [2023-11-06 21:04:08,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-06 21:04:08,995 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:04:08,996 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:04:08,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 21:04:08,996 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 21:04:08,997 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:04:08,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1465924419, now seen corresponding path program 1 times [2023-11-06 21:04:08,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 21:04:08,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975438624] [2023-11-06 21:04:08,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:04:08,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:04:09,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:04:09,273 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 21:04:09,273 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 21:04:09,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975438624] [2023-11-06 21:04:09,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975438624] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:04:09,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:04:09,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:04:09,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510201341] [2023-11-06 21:04:09,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:04:09,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:04:09,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 21:04:09,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:04:09,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:04:09,276 INFO L87 Difference]: Start difference. First operand 290 states and 786 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 21:04:09,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:04:09,354 INFO L93 Difference]: Finished difference Result 300 states and 783 transitions. [2023-11-06 21:04:09,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:04:09,354 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2023-11-06 21:04:09,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:04:09,360 INFO L225 Difference]: With dead ends: 300 [2023-11-06 21:04:09,361 INFO L226 Difference]: Without dead ends: 300 [2023-11-06 21:04:09,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 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 21:04:09,364 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 13 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:04:09,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 4 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:04:09,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2023-11-06 21:04:09,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 266. [2023-11-06 21:04:09,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 265 states have (on average 2.6566037735849055) internal successors, (704), 265 states have internal predecessors, (704), 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 21:04:09,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 704 transitions. [2023-11-06 21:04:09,392 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 704 transitions. Word has length 9 [2023-11-06 21:04:09,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:04:09,393 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 704 transitions. [2023-11-06 21:04:09,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 21:04:09,393 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 704 transitions. [2023-11-06 21:04:09,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-06 21:04:09,396 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:04:09,397 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:04:09,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 21:04:09,400 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 21:04:09,403 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:04:09,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1610812303, now seen corresponding path program 1 times [2023-11-06 21:04:09,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 21:04:09,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65609813] [2023-11-06 21:04:09,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:04:09,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:04:09,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:04:09,640 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 21:04:09,640 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 21:04:09,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65609813] [2023-11-06 21:04:09,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65609813] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:04:09,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:04:09,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:04:09,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711602209] [2023-11-06 21:04:09,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:04:09,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:04:09,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 21:04:09,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:04:09,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:04:09,649 INFO L87 Difference]: Start difference. First operand 266 states and 704 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 21:04:09,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:04:09,728 INFO L93 Difference]: Finished difference Result 288 states and 749 transitions. [2023-11-06 21:04:09,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:04:09,728 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 21:04:09,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:04:09,731 INFO L225 Difference]: With dead ends: 288 [2023-11-06 21:04:09,732 INFO L226 Difference]: Without dead ends: 288 [2023-11-06 21:04:09,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 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 21:04:09,735 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 12 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:04:09,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 9 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:04:09,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2023-11-06 21:04:09,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 250. [2023-11-06 21:04:09,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 249 states have (on average 2.642570281124498) internal successors, (658), 249 states have internal predecessors, (658), 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 21:04:09,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 658 transitions. [2023-11-06 21:04:09,751 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 658 transitions. Word has length 10 [2023-11-06 21:04:09,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:04:09,752 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 658 transitions. [2023-11-06 21:04:09,752 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 21:04:09,752 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 658 transitions. [2023-11-06 21:04:09,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-06 21:04:09,758 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:04:09,758 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:04:09,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 21:04:09,759 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 21:04:09,759 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:04:09,760 INFO L85 PathProgramCache]: Analyzing trace with hash 2442357, now seen corresponding path program 1 times [2023-11-06 21:04:09,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 21:04:09,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132260274] [2023-11-06 21:04:09,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:04:09,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:04:09,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:04:09,911 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 21:04:09,912 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 21:04:09,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132260274] [2023-11-06 21:04:09,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132260274] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:04:09,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:04:09,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:04:09,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197253288] [2023-11-06 21:04:09,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:04:09,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:04:09,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 21:04:09,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:04:09,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:04:09,916 INFO L87 Difference]: Start difference. First operand 250 states and 658 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 21:04:09,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:04:09,995 INFO L93 Difference]: Finished difference Result 342 states and 874 transitions. [2023-11-06 21:04:09,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:04:09,996 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 21:04:09,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:04:09,998 INFO L225 Difference]: With dead ends: 342 [2023-11-06 21:04:09,999 INFO L226 Difference]: Without dead ends: 184 [2023-11-06 21:04:09,999 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 21:04:10,001 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 21 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:04:10,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 7 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:04:10,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2023-11-06 21:04:10,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2023-11-06 21:04:10,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 183 states have (on average 2.557377049180328) internal successors, (468), 183 states have internal predecessors, (468), 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 21:04:10,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 468 transitions. [2023-11-06 21:04:10,012 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 468 transitions. Word has length 11 [2023-11-06 21:04:10,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:04:10,013 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 468 transitions. [2023-11-06 21:04:10,013 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 21:04:10,014 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 468 transitions. [2023-11-06 21:04:10,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-06 21:04:10,015 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:04:10,015 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:04:10,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 21:04:10,016 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 21:04:10,016 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:04:10,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1604448509, now seen corresponding path program 2 times [2023-11-06 21:04:10,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 21:04:10,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617710826] [2023-11-06 21:04:10,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:04:10,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:04:10,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:04:10,169 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 21:04:10,170 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 21:04:10,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617710826] [2023-11-06 21:04:10,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617710826] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:04:10,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:04:10,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:04:10,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467800854] [2023-11-06 21:04:10,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:04:10,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:04:10,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 21:04:10,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:04:10,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:04:10,172 INFO L87 Difference]: Start difference. First operand 184 states and 468 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 21:04:10,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:04:10,224 INFO L93 Difference]: Finished difference Result 214 states and 527 transitions. [2023-11-06 21:04:10,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:04:10,224 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 21:04:10,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:04:10,226 INFO L225 Difference]: With dead ends: 214 [2023-11-06 21:04:10,226 INFO L226 Difference]: Without dead ends: 122 [2023-11-06 21:04:10,226 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 21:04:10,227 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 18 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:04:10,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 6 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:04:10,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2023-11-06 21:04:10,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2023-11-06 21:04:10,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 2.4545454545454546) internal successors, (297), 121 states have internal predecessors, (297), 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 21:04:10,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 297 transitions. [2023-11-06 21:04:10,260 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 297 transitions. Word has length 11 [2023-11-06 21:04:10,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:04:10,260 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 297 transitions. [2023-11-06 21:04:10,260 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 21:04:10,261 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 297 transitions. [2023-11-06 21:04:10,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-06 21:04:10,261 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:04:10,261 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:04:10,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 21:04:10,262 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 21:04:10,262 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:04:10,262 INFO L85 PathProgramCache]: Analyzing trace with hash -937748560, now seen corresponding path program 1 times [2023-11-06 21:04:10,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 21:04:10,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042792586] [2023-11-06 21:04:10,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:04:10,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:04:10,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:04:10,423 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 21:04:10,424 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 21:04:10,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042792586] [2023-11-06 21:04:10,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042792586] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:04:10,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:04:10,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:04:10,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831167668] [2023-11-06 21:04:10,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:04:10,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:04:10,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 21:04:10,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:04:10,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:04:10,426 INFO L87 Difference]: Start difference. First operand 122 states and 297 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 21:04:10,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:04:10,470 INFO L93 Difference]: Finished difference Result 116 states and 278 transitions. [2023-11-06 21:04:10,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:04:10,471 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 21:04:10,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:04:10,472 INFO L225 Difference]: With dead ends: 116 [2023-11-06 21:04:10,472 INFO L226 Difference]: Without dead ends: 116 [2023-11-06 21:04:10,472 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 21:04:10,476 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 14 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:04:10,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 4 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:04:10,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-11-06 21:04:10,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 104. [2023-11-06 21:04:10,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 2.3883495145631066) internal successors, (246), 103 states have internal predecessors, (246), 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 21:04:10,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 246 transitions. [2023-11-06 21:04:10,483 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 246 transitions. Word has length 12 [2023-11-06 21:04:10,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:04:10,483 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 246 transitions. [2023-11-06 21:04:10,483 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 21:04:10,483 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 246 transitions. [2023-11-06 21:04:10,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-06 21:04:10,484 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:04:10,484 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:04:10,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 21:04:10,484 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 21:04:10,485 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:04:10,485 INFO L85 PathProgramCache]: Analyzing trace with hash 995428288, now seen corresponding path program 1 times [2023-11-06 21:04:10,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 21:04:10,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021544078] [2023-11-06 21:04:10,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:04:10,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:04:10,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:04:10,636 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 21:04:10,636 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 21:04:10,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021544078] [2023-11-06 21:04:10,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021544078] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:04:10,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:04:10,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:04:10,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415798618] [2023-11-06 21:04:10,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:04:10,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:04:10,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 21:04:10,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:04:10,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:04:10,638 INFO L87 Difference]: Start difference. First operand 104 states and 246 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:04:10,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:04:10,709 INFO L93 Difference]: Finished difference Result 128 states and 298 transitions. [2023-11-06 21:04:10,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:04:10,709 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-06 21:04:10,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:04:10,710 INFO L225 Difference]: With dead ends: 128 [2023-11-06 21:04:10,710 INFO L226 Difference]: Without dead ends: 68 [2023-11-06 21:04:10,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-06 21:04:10,711 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 29 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:04:10,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 8 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:04:10,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-11-06 21:04:10,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2023-11-06 21:04:10,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 2.1492537313432836) internal successors, (144), 67 states have internal predecessors, (144), 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 21:04:10,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 144 transitions. [2023-11-06 21:04:10,716 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 144 transitions. Word has length 13 [2023-11-06 21:04:10,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:04:10,716 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 144 transitions. [2023-11-06 21:04:10,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:04:10,716 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 144 transitions. [2023-11-06 21:04:10,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-06 21:04:10,717 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:04:10,717 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:04:10,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 21:04:10,718 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 21:04:10,718 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:04:10,718 INFO L85 PathProgramCache]: Analyzing trace with hash 994522468, now seen corresponding path program 2 times [2023-11-06 21:04:10,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 21:04:10,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770685810] [2023-11-06 21:04:10,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:04:10,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:04:10,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:04:10,876 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 21:04:10,876 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 21:04:10,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770685810] [2023-11-06 21:04:10,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770685810] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:04:10,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:04:10,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:04:10,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498897120] [2023-11-06 21:04:10,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:04:10,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:04:10,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 21:04:10,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:04:10,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:04:10,879 INFO L87 Difference]: Start difference. First operand 68 states and 144 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:04:10,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:04:10,931 INFO L93 Difference]: Finished difference Result 81 states and 157 transitions. [2023-11-06 21:04:10,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:04:10,932 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-06 21:04:10,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:04:10,933 INFO L225 Difference]: With dead ends: 81 [2023-11-06 21:04:10,933 INFO L226 Difference]: Without dead ends: 59 [2023-11-06 21:04:10,933 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 21:04:10,935 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 15 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:04:10,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 13 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:04:10,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-11-06 21:04:10,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2023-11-06 21:04:10,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.9655172413793103) internal successors, (114), 58 states have internal predecessors, (114), 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 21:04:10,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 114 transitions. [2023-11-06 21:04:10,940 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 114 transitions. Word has length 13 [2023-11-06 21:04:10,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:04:10,941 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 114 transitions. [2023-11-06 21:04:10,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:04:10,941 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 114 transitions. [2023-11-06 21:04:10,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-06 21:04:10,941 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:04:10,942 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:04:10,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 21:04:10,942 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 21:04:10,944 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:04:10,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1910611074, now seen corresponding path program 1 times [2023-11-06 21:04:10,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 21:04:10,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182243809] [2023-11-06 21:04:10,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:04:10,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:04:10,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:04:11,099 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 21:04:11,099 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 21:04:11,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182243809] [2023-11-06 21:04:11,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182243809] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:04:11,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:04:11,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:04:11,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101662630] [2023-11-06 21:04:11,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:04:11,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:04:11,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 21:04:11,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:04:11,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:04:11,102 INFO L87 Difference]: Start difference. First operand 59 states and 114 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 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 21:04:11,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:04:11,162 INFO L93 Difference]: Finished difference Result 60 states and 104 transitions. [2023-11-06 21:04:11,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:04:11,163 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 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 21:04:11,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:04:11,164 INFO L225 Difference]: With dead ends: 60 [2023-11-06 21:04:11,164 INFO L226 Difference]: Without dead ends: 45 [2023-11-06 21:04:11,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-06 21:04:11,165 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 21 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:04:11,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 14 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:04:11,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-11-06 21:04:11,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2023-11-06 21:04:11,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.6818181818181819) internal successors, (74), 44 states have internal predecessors, (74), 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 21:04:11,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 74 transitions. [2023-11-06 21:04:11,169 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 74 transitions. Word has length 14 [2023-11-06 21:04:11,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:04:11,169 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 74 transitions. [2023-11-06 21:04:11,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 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 21:04:11,170 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 74 transitions. [2023-11-06 21:04:11,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-06 21:04:11,170 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:04:11,170 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:04:11,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 21:04:11,171 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 21:04:11,171 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:04:11,171 INFO L85 PathProgramCache]: Analyzing trace with hash -900606785, now seen corresponding path program 1 times [2023-11-06 21:04:11,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 21:04:11,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123929263] [2023-11-06 21:04:11,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:04:11,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:04:11,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:04:11,293 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 21:04:11,293 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 21:04:11,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123929263] [2023-11-06 21:04:11,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123929263] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:04:11,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:04:11,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:04:11,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225455763] [2023-11-06 21:04:11,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:04:11,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 21:04:11,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 21:04:11,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 21:04:11,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-06 21:04:11,296 INFO L87 Difference]: Start difference. First operand 45 states and 74 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 21:04:11,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:04:11,367 INFO L93 Difference]: Finished difference Result 42 states and 66 transitions. [2023-11-06 21:04:11,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 21:04:11,368 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 15 [2023-11-06 21:04:11,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:04:11,369 INFO L225 Difference]: With dead ends: 42 [2023-11-06 21:04:11,369 INFO L226 Difference]: Without dead ends: 36 [2023-11-06 21:04:11,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:04:11,370 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 15 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:04:11,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 12 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:04:11,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-11-06 21:04:11,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2023-11-06 21:04:11,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.6) internal successors, (56), 35 states have internal predecessors, (56), 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 21:04:11,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2023-11-06 21:04:11,374 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2023-11-06 21:04:11,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:04:11,374 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2023-11-06 21:04:11,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 21:04:11,374 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2023-11-06 21:04:11,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-06 21:04:11,375 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:04:11,375 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 21:04:11,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 21:04:11,376 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 21:04:11,376 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:04:11,376 INFO L85 PathProgramCache]: Analyzing trace with hash 2034389914, now seen corresponding path program 1 times [2023-11-06 21:04:11,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 21:04:11,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029811139] [2023-11-06 21:04:11,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:04:11,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:04:11,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:04:11,523 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 21:04:11,524 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 21:04:11,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029811139] [2023-11-06 21:04:11,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029811139] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:04:11,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:04:11,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:04:11,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079229102] [2023-11-06 21:04:11,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:04:11,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:04:11,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 21:04:11,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:04:11,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:04:11,526 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 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 21:04:11,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:04:11,568 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2023-11-06 21:04:11,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:04:11,568 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 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 21:04:11,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:04:11,569 INFO L225 Difference]: With dead ends: 35 [2023-11-06 21:04:11,569 INFO L226 Difference]: Without dead ends: 0 [2023-11-06 21:04:11,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 21:04:11,570 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 13 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:04:11,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:04:11,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-06 21:04:11,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-06 21:04:11,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:04:11,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-06 21:04:11,572 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2023-11-06 21:04:11,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:04:11,572 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-06 21:04:11,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 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 21:04:11,573 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-06 21:04:11,573 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-06 21:04:11,575 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-06 21:04:11,576 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-06 21:04:11,576 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-06 21:04:11,576 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-06 21:04:11,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 21:04:11,579 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:04:11,581 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 21:04:11,582 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 21:04:11,585 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:04:11 BasicIcfg [2023-11-06 21:04:11,585 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 21:04:11,585 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 21:04:11,586 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 21:04:11,586 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 21:04:11,586 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:04:04" (3/4) ... [2023-11-06 21:04:11,588 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 21:04:11,593 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-06 21:04:11,593 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-06 21:04:11,593 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-11-06 21:04:11,599 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2023-11-06 21:04:11,599 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-06 21:04:11,599 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 21:04:11,600 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 21:04:11,657 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59b1d2c-74ab-4590-a47b-50bb1cd0a543/bin/utaipan-verify-FOvIYxoinp/witness.graphml.graphml [2023-11-06 21:04:11,657 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59b1d2c-74ab-4590-a47b-50bb1cd0a543/bin/utaipan-verify-FOvIYxoinp/witness.graphml.yaml [2023-11-06 21:04:11,658 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 21:04:11,659 INFO L158 Benchmark]: Toolchain (without parser) took 8302.73ms. Allocated memory was 157.3MB in the beginning and 188.7MB in the end (delta: 31.5MB). Free memory was 122.3MB in the beginning and 65.5MB in the end (delta: 56.7MB). Peak memory consumption was 91.3MB. Max. memory is 16.1GB. [2023-11-06 21:04:11,659 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 119.5MB. Free memory is still 63.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:04:11,659 INFO L158 Benchmark]: CACSL2BoogieTranslator took 501.32ms. Allocated memory is still 157.3MB. Free memory was 122.3MB in the beginning and 101.3MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-06 21:04:11,660 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.10ms. Allocated memory is still 157.3MB. Free memory was 101.3MB in the beginning and 99.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 21:04:11,660 INFO L158 Benchmark]: Boogie Preprocessor took 29.36ms. Allocated memory is still 157.3MB. Free memory was 99.9MB in the beginning and 97.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 21:04:11,661 INFO L158 Benchmark]: RCFGBuilder took 500.81ms. Allocated memory is still 157.3MB. Free memory was 97.8MB in the beginning and 84.5MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-06 21:04:11,662 INFO L158 Benchmark]: TraceAbstraction took 7143.94ms. Allocated memory was 157.3MB in the beginning and 188.7MB in the end (delta: 31.5MB). Free memory was 83.8MB in the beginning and 68.7MB in the end (delta: 15.1MB). Peak memory consumption was 47.3MB. Max. memory is 16.1GB. [2023-11-06 21:04:11,662 INFO L158 Benchmark]: Witness Printer took 72.23ms. Allocated memory is still 188.7MB. Free memory was 68.7MB in the beginning and 65.5MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 21:04:11,665 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 119.5MB. Free memory is still 63.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 501.32ms. Allocated memory is still 157.3MB. Free memory was 122.3MB in the beginning and 101.3MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.10ms. Allocated memory is still 157.3MB. Free memory was 101.3MB in the beginning and 99.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.36ms. Allocated memory is still 157.3MB. Free memory was 99.9MB in the beginning and 97.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 500.81ms. Allocated memory is still 157.3MB. Free memory was 97.8MB in the beginning and 84.5MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 7143.94ms. Allocated memory was 157.3MB in the beginning and 188.7MB in the end (delta: 31.5MB). Free memory was 83.8MB in the beginning and 68.7MB in the end (delta: 15.1MB). Peak memory consumption was 47.3MB. Max. memory is 16.1GB. * Witness Printer took 72.23ms. Allocated memory is still 188.7MB. Free memory was 68.7MB in the beginning and 65.5MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.3s, 96 PlacesBefore, 31 PlacesAfterwards, 88 TransitionsBefore, 21 TransitionsAfterwards, 1620 CoEnabledTransitionPairs, 6 FixpointIterations, 19 TrivialSequentialCompositions, 49 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 78 TotalNumberOfCompositions, 3139 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1875, independent: 1776, independent conditional: 0, independent unconditional: 1776, dependent: 99, dependent conditional: 0, dependent unconditional: 99, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1172, independent: 1117, independent conditional: 0, independent unconditional: 1117, dependent: 55, dependent conditional: 0, dependent unconditional: 55, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1172, independent: 1107, independent conditional: 0, independent unconditional: 1107, dependent: 65, dependent conditional: 0, dependent unconditional: 65, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 65, independent: 10, independent conditional: 0, independent unconditional: 10, dependent: 55, dependent conditional: 0, dependent unconditional: 55, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 219, independent: 40, independent conditional: 0, independent unconditional: 40, dependent: 179, dependent conditional: 0, dependent unconditional: 179, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1875, independent: 659, independent conditional: 0, independent unconditional: 659, dependent: 44, dependent conditional: 0, dependent unconditional: 44, unknown: 1172, unknown conditional: 0, unknown unconditional: 1172] , Statistics on independence cache: Total cache size (in pairs): 77, Positive cache size: 61, Positive conditional cache size: 0, Positive unconditional cache size: 61, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 111 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 7.0s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 175 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 175 mSDsluCounter, 83 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 42 mSDsCounter, 23 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 478 IncrementalHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 23 mSolverCounterUnsat, 41 mSDtfsCounter, 478 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=290occurred in iteration=1, InterpolantAutomatonStates: 52, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 118 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 133 NumberOfCodeBlocks, 133 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 122 ConstructedInterpolants, 0 QuantifiedInterpolants, 616 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-06 21:04:11,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59b1d2c-74ab-4590-a47b-50bb1cd0a543/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE