./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.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_684a84f2-8243-4e66-949e-60d6c3c46e9c/bin/utaipan-verify-FOvIYxoinp/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684a84f2-8243-4e66-949e-60d6c3c46e9c/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_684a84f2-8243-4e66-949e-60d6c3c46e9c/bin/utaipan-verify-FOvIYxoinp/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684a84f2-8243-4e66-949e-60d6c3c46e9c/bin/utaipan-verify-FOvIYxoinp/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684a84f2-8243-4e66-949e-60d6c3c46e9c/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_684a84f2-8243-4e66-949e-60d6c3c46e9c/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 fb302bfc042709458f72100356b9fd74bb7921271e539fc7dcbd801222f139c8 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 20:57:48,262 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 20:57:48,381 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684a84f2-8243-4e66-949e-60d6c3c46e9c/bin/utaipan-verify-FOvIYxoinp/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-06 20:57:48,388 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 20:57:48,389 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 20:57:48,426 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 20:57:48,427 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 20:57:48,428 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 20:57:48,429 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 20:57:48,430 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 20:57:48,431 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-06 20:57:48,431 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-06 20:57:48,432 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-06 20:57:48,432 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-06 20:57:48,433 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-06 20:57:48,433 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-06 20:57:48,434 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-06 20:57:48,434 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-06 20:57:48,434 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-06 20:57:48,435 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-06 20:57:48,435 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-06 20:57:48,436 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-06 20:57:48,438 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 20:57:48,438 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 20:57:48,438 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 20:57:48,439 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 20:57:48,439 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 20:57:48,440 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 20:57:48,440 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 20:57:48,440 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 20:57:48,442 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 20:57:48,442 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 20:57:48,442 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 20:57:48,443 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 20:57:48,443 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 20:57:48,443 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 20:57:48,443 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 20:57:48,444 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 20:57:48,444 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 20:57:48,444 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 20:57:48,444 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-06 20:57:48,445 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 20:57:48,445 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 20:57:48,445 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-06 20:57:48,446 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 20:57:48,446 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_684a84f2-8243-4e66-949e-60d6c3c46e9c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684a84f2-8243-4e66-949e-60d6c3c46e9c/bin/utaipan-verify-FOvIYxoinp Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fb302bfc042709458f72100356b9fd74bb7921271e539fc7dcbd801222f139c8 [2023-11-06 20:57:48,787 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 20:57:48,821 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 20:57:48,824 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 20:57:48,825 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 20:57:48,828 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 20:57:48,831 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684a84f2-8243-4e66-949e-60d6c3c46e9c/bin/utaipan-verify-FOvIYxoinp/../../sv-benchmarks/c/pthread-wmm/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i [2023-11-06 20:57:51,841 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 20:57:52,139 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 20:57:52,140 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684a84f2-8243-4e66-949e-60d6c3c46e9c/sv-benchmarks/c/pthread-wmm/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i [2023-11-06 20:57:52,157 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684a84f2-8243-4e66-949e-60d6c3c46e9c/bin/utaipan-verify-FOvIYxoinp/data/8bebda945/4ff7d0180bd04990a4808a80d751a59e/FLAG6f6699fe1 [2023-11-06 20:57:52,432 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684a84f2-8243-4e66-949e-60d6c3c46e9c/bin/utaipan-verify-FOvIYxoinp/data/8bebda945/4ff7d0180bd04990a4808a80d751a59e [2023-11-06 20:57:52,438 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 20:57:52,440 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 20:57:52,441 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 20:57:52,442 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 20:57:52,446 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 20:57:52,447 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:57:52" (1/1) ... [2023-11-06 20:57:52,448 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3aa39f8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:57:52, skipping insertion in model container [2023-11-06 20:57:52,449 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:57:52" (1/1) ... [2023-11-06 20:57:52,520 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 20:57:52,683 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_684a84f2-8243-4e66-949e-60d6c3c46e9c/sv-benchmarks/c/pthread-wmm/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i[992,1005] [2023-11-06 20:57:52,858 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 20:57:52,874 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 20:57:52,896 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_684a84f2-8243-4e66-949e-60d6c3c46e9c/sv-benchmarks/c/pthread-wmm/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i[992,1005] [2023-11-06 20:57:52,950 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 20:57:52,998 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 20:57:52,999 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 20:57:53,007 INFO L206 MainTranslator]: Completed translation [2023-11-06 20:57:53,007 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:57:53 WrapperNode [2023-11-06 20:57:53,008 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 20:57:53,009 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 20:57:53,009 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 20:57:53,009 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 20:57:53,018 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:57:53" (1/1) ... [2023-11-06 20:57:53,057 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:57:53" (1/1) ... [2023-11-06 20:57:53,088 INFO L138 Inliner]: procedures = 176, calls = 59, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2023-11-06 20:57:53,089 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 20:57:53,090 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 20:57:53,090 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 20:57:53,090 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 20:57:53,101 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:57:53" (1/1) ... [2023-11-06 20:57:53,101 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:57:53" (1/1) ... [2023-11-06 20:57:53,116 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:57:53" (1/1) ... [2023-11-06 20:57:53,117 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:57:53" (1/1) ... [2023-11-06 20:57:53,125 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:57:53" (1/1) ... [2023-11-06 20:57:53,137 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:57:53" (1/1) ... [2023-11-06 20:57:53,139 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:57:53" (1/1) ... [2023-11-06 20:57:53,148 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:57:53" (1/1) ... [2023-11-06 20:57:53,151 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 20:57:53,152 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 20:57:53,153 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 20:57:53,159 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 20:57:53,160 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:57:53" (1/1) ... [2023-11-06 20:57:53,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 20:57:53,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684a84f2-8243-4e66-949e-60d6c3c46e9c/bin/utaipan-verify-FOvIYxoinp/z3 [2023-11-06 20:57:53,198 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684a84f2-8243-4e66-949e-60d6c3c46e9c/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 20:57:53,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684a84f2-8243-4e66-949e-60d6c3c46e9c/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 20:57:53,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 20:57:53,247 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 20:57:53,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 20:57:53,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 20:57:53,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 20:57:53,250 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-06 20:57:53,250 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-06 20:57:53,250 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-06 20:57:53,250 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-06 20:57:53,250 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-06 20:57:53,251 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-06 20:57:53,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 20:57:53,251 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 20:57:53,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 20:57:53,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 20:57:53,254 WARN L210 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 20:57:53,426 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 20:57:53,429 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 20:57:53,632 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 20:57:53,640 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 20:57:53,640 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 20:57:53,643 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:57:53 BoogieIcfgContainer [2023-11-06 20:57:53,643 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 20:57:53,646 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 20:57:53,646 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 20:57:53,650 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 20:57:53,650 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 08:57:52" (1/3) ... [2023-11-06 20:57:53,651 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71f5a5a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:57:53, skipping insertion in model container [2023-11-06 20:57:53,651 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:57:53" (2/3) ... [2023-11-06 20:57:53,652 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71f5a5a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:57:53, skipping insertion in model container [2023-11-06 20:57:53,652 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:57:53" (3/3) ... [2023-11-06 20:57:53,653 INFO L112 eAbstractionObserver]: Analyzing ICFG safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i [2023-11-06 20:57:53,663 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 20:57:53,675 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 20:57:53,676 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 20:57:53,676 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 20:57:53,747 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 20:57:53,785 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-06 20:57:53,802 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 96 places, 88 transitions, 188 flow [2023-11-06 20:57:53,806 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 96 places, 88 transitions, 188 flow [2023-11-06 20:57:53,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 88 transitions, 188 flow [2023-11-06 20:57:53,865 INFO L124 PetriNetUnfolderBase]: 2/85 cut-off events. [2023-11-06 20:57:53,869 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 20:57:53,882 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 48 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 20:57:53,884 INFO L119 LiptonReduction]: Number of co-enabled transitions 1620 [2023-11-06 20:57:57,056 INFO L134 LiptonReduction]: Checked pairs total: 3217 [2023-11-06 20:57:57,056 INFO L136 LiptonReduction]: Total number of compositions: 76 [2023-11-06 20:57:57,065 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 58 flow [2023-11-06 20:57:57,128 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 298 states, 297 states have (on average 3.1245791245791246) internal successors, (928), 297 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:57:57,148 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 20:57:57,155 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;@6896844, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-06 20:57:57,155 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-06 20:57:57,158 INFO L276 IsEmpty]: Start isEmpty. Operand has 298 states, 297 states have (on average 3.1245791245791246) internal successors, (928), 297 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:57:57,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-06 20:57:57,165 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:57:57,165 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:57:57,166 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 20:57:57,171 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:57:57,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1502695322, now seen corresponding path program 1 times [2023-11-06 20:57:57,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:57:57,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975445636] [2023-11-06 20:57:57,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:57:57,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:57:57,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:57:57,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:57:57,444 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:57:57,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975445636] [2023-11-06 20:57:57,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975445636] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:57:57,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:57:57,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 20:57:57,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892721480] [2023-11-06 20:57:57,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:57:57,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 20:57:57,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:57:57,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 20:57:57,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 20:57:57,481 INFO L87 Difference]: Start difference. First operand has 298 states, 297 states have (on average 3.1245791245791246) internal successors, (928), 297 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:57:57,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:57:57,558 INFO L93 Difference]: Finished difference Result 298 states and 864 transitions. [2023-11-06 20:57:57,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 20:57:57,561 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-06 20:57:57,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:57:57,586 INFO L225 Difference]: With dead ends: 298 [2023-11-06 20:57:57,587 INFO L226 Difference]: Without dead ends: 298 [2023-11-06 20:57:57,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 20:57:57,593 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 20:57:57,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 20:57:57,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2023-11-06 20:57:57,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2023-11-06 20:57:57,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 297 states have (on average 2.909090909090909) internal successors, (864), 297 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:57:57,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2023-11-06 20:57:57,658 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2023-11-06 20:57:57,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:57:57,659 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2023-11-06 20:57:57,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:57:57,660 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2023-11-06 20:57:57,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-06 20:57:57,661 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:57:57,661 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:57:57,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 20:57:57,662 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 20:57:57,663 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:57:57,663 INFO L85 PathProgramCache]: Analyzing trace with hash -661095190, now seen corresponding path program 1 times [2023-11-06 20:57:57,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:57:57,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975988676] [2023-11-06 20:57:57,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:57:57,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:57:57,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:57:58,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:57:58,023 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:57:58,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975988676] [2023-11-06 20:57:58,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975988676] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:57:58,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:57:58,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 20:57:58,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855711551] [2023-11-06 20:57:58,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:57:58,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 20:57:58,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:57:58,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 20:57:58,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 20:57:58,027 INFO L87 Difference]: Start difference. First operand 298 states and 864 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 20:57:58,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:57:58,111 INFO L93 Difference]: Finished difference Result 354 states and 982 transitions. [2023-11-06 20:57:58,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 20:57:58,112 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 20:57:58,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:57:58,116 INFO L225 Difference]: With dead ends: 354 [2023-11-06 20:57:58,117 INFO L226 Difference]: Without dead ends: 290 [2023-11-06 20:57:58,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 20:57:58,120 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 18 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 20:57:58,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 8 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 20:57:58,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2023-11-06 20:57:58,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2023-11-06 20:57:58,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 289 states have (on average 2.885813148788927) internal successors, (834), 289 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:57:58,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 834 transitions. [2023-11-06 20:57:58,158 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 834 transitions. Word has length 9 [2023-11-06 20:57:58,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:57:58,158 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 834 transitions. [2023-11-06 20:57:58,159 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 20:57:58,159 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 834 transitions. [2023-11-06 20:57:58,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-06 20:57:58,161 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:57:58,161 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:57:58,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 20:57:58,162 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 20:57:58,163 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:57:58,163 INFO L85 PathProgramCache]: Analyzing trace with hash 979218910, now seen corresponding path program 1 times [2023-11-06 20:57:58,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:57:58,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570765787] [2023-11-06 20:57:58,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:57:58,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:57:58,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:57:58,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:57:58,425 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:57:58,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570765787] [2023-11-06 20:57:58,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570765787] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:57:58,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:57:58,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 20:57:58,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087656150] [2023-11-06 20:57:58,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:57:58,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 20:57:58,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:57:58,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 20:57:58,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 20:57:58,429 INFO L87 Difference]: Start difference. First operand 290 states and 834 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:57:58,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:57:58,566 INFO L93 Difference]: Finished difference Result 540 states and 1468 transitions. [2023-11-06 20:57:58,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 20:57:58,567 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-06 20:57:58,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:57:58,576 INFO L225 Difference]: With dead ends: 540 [2023-11-06 20:57:58,576 INFO L226 Difference]: Without dead ends: 382 [2023-11-06 20:57:58,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 20:57:58,581 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 26 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 20:57:58,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 6 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 20:57:58,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2023-11-06 20:57:58,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 298. [2023-11-06 20:57:58,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 297 states have (on average 2.6666666666666665) internal successors, (792), 297 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:57:58,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 792 transitions. [2023-11-06 20:57:58,615 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 792 transitions. Word has length 10 [2023-11-06 20:57:58,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:57:58,615 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 792 transitions. [2023-11-06 20:57:58,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:57:58,616 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 792 transitions. [2023-11-06 20:57:58,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-06 20:57:58,622 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:57:58,622 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:57:58,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 20:57:58,623 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 20:57:58,624 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:57:58,624 INFO L85 PathProgramCache]: Analyzing trace with hash 980861259, now seen corresponding path program 1 times [2023-11-06 20:57:58,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:57:58,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590126053] [2023-11-06 20:57:58,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:57:58,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:57:58,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:57:58,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:57:58,854 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:57:58,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590126053] [2023-11-06 20:57:58,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590126053] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:57:58,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:57:58,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 20:57:58,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969747634] [2023-11-06 20:57:58,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:57:58,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 20:57:58,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:57:58,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 20:57:58,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 20:57:58,864 INFO L87 Difference]: Start difference. First operand 298 states and 792 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:57:58,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:57:58,974 INFO L93 Difference]: Finished difference Result 338 states and 836 transitions. [2023-11-06 20:57:58,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 20:57:58,975 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-06 20:57:58,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:57:58,978 INFO L225 Difference]: With dead ends: 338 [2023-11-06 20:57:58,978 INFO L226 Difference]: Without dead ends: 222 [2023-11-06 20:57:58,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-06 20:57:58,982 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 40 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 20:57:58,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 9 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 20:57:58,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2023-11-06 20:57:58,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 182. [2023-11-06 20:57:58,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 2.585635359116022) internal successors, (468), 181 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 20:57:58,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 468 transitions. [2023-11-06 20:57:58,992 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 468 transitions. Word has length 10 [2023-11-06 20:57:58,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:57:58,993 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 468 transitions. [2023-11-06 20:57:58,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:57:58,993 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 468 transitions. [2023-11-06 20:57:58,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-06 20:57:58,996 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:57:58,996 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:57:58,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 20:57:58,996 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 20:57:58,997 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:57:58,997 INFO L85 PathProgramCache]: Analyzing trace with hash 366913981, now seen corresponding path program 1 times [2023-11-06 20:57:58,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:57:58,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610012209] [2023-11-06 20:57:58,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:57:59,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:57:59,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:57:59,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:57:59,128 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:57:59,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610012209] [2023-11-06 20:57:59,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610012209] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:57:59,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:57:59,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 20:57:59,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797703720] [2023-11-06 20:57:59,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:57:59,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 20:57:59,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:57:59,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 20:57:59,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 20:57:59,131 INFO L87 Difference]: Start difference. First operand 182 states and 468 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:57:59,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:57:59,161 INFO L93 Difference]: Finished difference Result 146 states and 331 transitions. [2023-11-06 20:57:59,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 20:57:59,161 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-06 20:57:59,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:57:59,163 INFO L225 Difference]: With dead ends: 146 [2023-11-06 20:57:59,163 INFO L226 Difference]: Without dead ends: 146 [2023-11-06 20:57:59,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 20:57:59,164 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 4 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 20:57:59,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 6 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 20:57:59,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2023-11-06 20:57:59,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2023-11-06 20:57:59,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 2.282758620689655) internal successors, (331), 145 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:57:59,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 331 transitions. [2023-11-06 20:57:59,172 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 331 transitions. Word has length 12 [2023-11-06 20:57:59,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:57:59,172 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 331 transitions. [2023-11-06 20:57:59,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:57:59,173 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 331 transitions. [2023-11-06 20:57:59,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-06 20:57:59,177 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:57:59,178 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:57:59,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 20:57:59,178 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 20:57:59,179 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:57:59,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1526411829, now seen corresponding path program 1 times [2023-11-06 20:57:59,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:57:59,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860919469] [2023-11-06 20:57:59,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:57:59,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:57:59,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:57:59,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:57:59,337 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:57:59,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860919469] [2023-11-06 20:57:59,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860919469] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:57:59,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:57:59,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 20:57:59,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312674658] [2023-11-06 20:57:59,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:57:59,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 20:57:59,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:57:59,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 20:57:59,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 20:57:59,339 INFO L87 Difference]: Start difference. First operand 146 states and 331 transitions. Second operand has 4 states, 4 states have (on average 3.25) 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 20:57:59,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:57:59,377 INFO L93 Difference]: Finished difference Result 101 states and 200 transitions. [2023-11-06 20:57:59,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 20:57:59,377 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) 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 20:57:59,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:57:59,378 INFO L225 Difference]: With dead ends: 101 [2023-11-06 20:57:59,379 INFO L226 Difference]: Without dead ends: 101 [2023-11-06 20:57:59,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 20:57:59,380 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 12 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 20:57:59,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 8 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 20:57:59,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-11-06 20:57:59,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 97. [2023-11-06 20:57:59,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.9791666666666667) internal successors, (190), 96 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:57:59,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 190 transitions. [2023-11-06 20:57:59,384 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 190 transitions. Word has length 13 [2023-11-06 20:57:59,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:57:59,385 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 190 transitions. [2023-11-06 20:57:59,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) 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 20:57:59,385 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 190 transitions. [2023-11-06 20:57:59,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-06 20:57:59,386 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:57:59,386 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:57:59,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 20:57:59,387 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 20:57:59,387 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:57:59,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1173169588, now seen corresponding path program 1 times [2023-11-06 20:57:59,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:57:59,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895950998] [2023-11-06 20:57:59,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:57:59,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:57:59,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:57:59,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:57:59,541 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:57:59,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895950998] [2023-11-06 20:57:59,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895950998] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:57:59,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:57:59,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 20:57:59,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173624787] [2023-11-06 20:57:59,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:57:59,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 20:57:59,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:57:59,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 20:57:59,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-06 20:57:59,543 INFO L87 Difference]: Start difference. First operand 97 states and 190 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 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 20:57:59,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:57:59,591 INFO L93 Difference]: Finished difference Result 77 states and 151 transitions. [2023-11-06 20:57:59,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 20:57:59,592 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 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 20:57:59,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:57:59,593 INFO L225 Difference]: With dead ends: 77 [2023-11-06 20:57:59,593 INFO L226 Difference]: Without dead ends: 69 [2023-11-06 20:57:59,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-06 20:57:59,594 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 21 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 20:57:59,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 7 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 20:57:59,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-11-06 20:57:59,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 65. [2023-11-06 20:57:59,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.984375) internal successors, (127), 64 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:57:59,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 127 transitions. [2023-11-06 20:57:59,599 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 127 transitions. Word has length 15 [2023-11-06 20:57:59,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:57:59,600 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 127 transitions. [2023-11-06 20:57:59,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 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 20:57:59,600 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 127 transitions. [2023-11-06 20:57:59,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-06 20:57:59,601 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:57:59,601 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:57:59,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 20:57:59,601 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 20:57:59,602 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:57:59,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1742595180, now seen corresponding path program 1 times [2023-11-06 20:57:59,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:57:59,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976433781] [2023-11-06 20:57:59,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:57:59,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:57:59,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:57:59,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:57:59,782 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:57:59,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976433781] [2023-11-06 20:57:59,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976433781] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:57:59,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:57:59,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 20:57:59,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606320792] [2023-11-06 20:57:59,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:57:59,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 20:57:59,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:57:59,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 20:57:59,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 20:57:59,785 INFO L87 Difference]: Start difference. First operand 65 states and 127 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:57:59,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:57:59,901 INFO L93 Difference]: Finished difference Result 82 states and 156 transitions. [2023-11-06 20:57:59,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 20:57:59,902 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 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 18 [2023-11-06 20:57:59,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:57:59,902 INFO L225 Difference]: With dead ends: 82 [2023-11-06 20:57:59,902 INFO L226 Difference]: Without dead ends: 0 [2023-11-06 20:57:59,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 20:57:59,906 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 13 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 20:57:59,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 0 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 20:57:59,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-06 20:57:59,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-06 20:57:59,907 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 20:57:59,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-06 20:57:59,909 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2023-11-06 20:57:59,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:57:59,911 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-06 20:57:59,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:57:59,912 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-06 20:57:59,912 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-06 20:57:59,914 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-06 20:57:59,915 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-06 20:57:59,917 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-06 20:57:59,917 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-06 20:57:59,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 20:57:59,921 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:57:59,924 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 20:57:59,924 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 20:57:59,929 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 08:57:59 BasicIcfg [2023-11-06 20:57:59,929 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 20:57:59,930 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 20:57:59,930 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 20:57:59,930 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 20:57:59,930 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:57:53" (3/4) ... [2023-11-06 20:57:59,932 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 20:57:59,937 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-06 20:57:59,937 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-06 20:57:59,937 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-11-06 20:57:59,943 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2023-11-06 20:57:59,944 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-06 20:57:59,944 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 20:57:59,944 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 20:57:59,991 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684a84f2-8243-4e66-949e-60d6c3c46e9c/bin/utaipan-verify-FOvIYxoinp/witness.graphml.graphml [2023-11-06 20:57:59,992 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684a84f2-8243-4e66-949e-60d6c3c46e9c/bin/utaipan-verify-FOvIYxoinp/witness.graphml.yaml [2023-11-06 20:57:59,992 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 20:57:59,993 INFO L158 Benchmark]: Toolchain (without parser) took 7553.19ms. Allocated memory was 192.9MB in the beginning and 239.1MB in the end (delta: 46.1MB). Free memory was 145.6MB in the beginning and 139.3MB in the end (delta: 6.3MB). Peak memory consumption was 53.7MB. Max. memory is 16.1GB. [2023-11-06 20:57:59,993 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 192.9MB. Free memory is still 166.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 20:57:59,994 INFO L158 Benchmark]: CACSL2BoogieTranslator took 566.66ms. Allocated memory is still 192.9MB. Free memory was 145.2MB in the beginning and 124.9MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-06 20:57:59,994 INFO L158 Benchmark]: Boogie Procedure Inliner took 80.18ms. Allocated memory is still 192.9MB. Free memory was 124.9MB in the beginning and 123.0MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 20:57:59,994 INFO L158 Benchmark]: Boogie Preprocessor took 61.52ms. Allocated memory is still 192.9MB. Free memory was 123.0MB in the beginning and 121.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 20:57:59,995 INFO L158 Benchmark]: RCFGBuilder took 491.24ms. Allocated memory is still 192.9MB. Free memory was 121.3MB in the beginning and 107.0MB in the end (delta: 14.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-06 20:57:59,995 INFO L158 Benchmark]: TraceAbstraction took 6282.97ms. Allocated memory was 192.9MB in the beginning and 239.1MB in the end (delta: 46.1MB). Free memory was 106.6MB in the beginning and 142.5MB in the end (delta: -35.9MB). Peak memory consumption was 11.7MB. Max. memory is 16.1GB. [2023-11-06 20:57:59,996 INFO L158 Benchmark]: Witness Printer took 62.63ms. Allocated memory is still 239.1MB. Free memory was 142.5MB in the beginning and 139.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 20:57:59,998 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 192.9MB. Free memory is still 166.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 566.66ms. Allocated memory is still 192.9MB. Free memory was 145.2MB in the beginning and 124.9MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 80.18ms. Allocated memory is still 192.9MB. Free memory was 124.9MB in the beginning and 123.0MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.52ms. Allocated memory is still 192.9MB. Free memory was 123.0MB in the beginning and 121.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 491.24ms. Allocated memory is still 192.9MB. Free memory was 121.3MB in the beginning and 107.0MB in the end (delta: 14.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 6282.97ms. Allocated memory was 192.9MB in the beginning and 239.1MB in the end (delta: 46.1MB). Free memory was 106.6MB in the beginning and 142.5MB in the end (delta: -35.9MB). Peak memory consumption was 11.7MB. Max. memory is 16.1GB. * Witness Printer took 62.63ms. Allocated memory is still 239.1MB. Free memory was 142.5MB in the beginning and 139.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. 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, 32 PlacesAfterwards, 88 TransitionsBefore, 23 TransitionsAfterwards, 1620 CoEnabledTransitionPairs, 6 FixpointIterations, 19 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 1 ChoiceCompositions, 76 TotalNumberOfCompositions, 3217 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1886, independent: 1788, independent conditional: 0, independent unconditional: 1788, dependent: 98, dependent conditional: 0, dependent unconditional: 98, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1207, independent: 1160, independent conditional: 0, independent unconditional: 1160, dependent: 47, dependent conditional: 0, dependent unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1207, independent: 1153, independent conditional: 0, independent unconditional: 1153, dependent: 54, dependent conditional: 0, dependent unconditional: 54, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 54, independent: 7, independent conditional: 0, independent unconditional: 7, dependent: 47, dependent conditional: 0, dependent unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 197, independent: 33, independent conditional: 0, independent unconditional: 33, dependent: 164, dependent conditional: 0, dependent unconditional: 164, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1886, independent: 628, independent conditional: 0, independent unconditional: 628, dependent: 51, dependent conditional: 0, dependent unconditional: 51, unknown: 1207, unknown conditional: 0, unknown unconditional: 1207] , Statistics on independence cache: Total cache size (in pairs): 91, Positive cache size: 76, Positive conditional cache size: 0, Positive unconditional cache size: 76, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15, 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: 6.1s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 134 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 134 mSDsluCounter, 47 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 21 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 373 IncrementalHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 26 mSDtfsCounter, 373 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, InterpolantAutomatonStates: 37, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 132 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 95 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 87 ConstructedInterpolants, 0 QuantifiedInterpolants, 299 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-06 20:58:00,021 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684a84f2-8243-4e66-949e-60d6c3c46e9c/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE