./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread/stack_longest-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/stack_longest-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 529fe0895c01c52d9b18b51c32204a307faf547c0c07b22bc1a431308affcf90 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 04:30:52,182 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 04:30:52,262 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2024-11-09 04:30:52,271 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 04:30:52,272 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 04:30:52,308 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 04:30:52,310 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 04:30:52,311 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 04:30:52,312 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 04:30:52,313 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 04:30:52,313 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 04:30:52,314 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 04:30:52,315 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 04:30:52,316 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 04:30:52,316 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 04:30:52,318 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 04:30:52,319 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 04:30:52,319 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 04:30:52,320 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 04:30:52,320 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 04:30:52,320 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 04:30:52,325 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 04:30:52,325 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 04:30:52,325 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 04:30:52,326 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 04:30:52,326 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 04:30:52,326 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 04:30:52,327 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 04:30:52,327 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 04:30:52,327 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 04:30:52,328 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 04:30:52,328 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 04:30:52,328 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 04:30:52,332 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 04:30:52,333 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 04:30:52,333 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 04:30:52,333 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 04:30:52,334 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 04:30:52,334 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 04:30:52,334 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 04:30:52,335 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 04:30:52,336 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 04:30:52,336 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 04:30:52,337 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 04:30:52,337 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 04:30:52,338 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 04:30:52,338 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 04:30:52,338 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 04:30:52,338 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 04:30:52,339 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_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 529fe0895c01c52d9b18b51c32204a307faf547c0c07b22bc1a431308affcf90 [2024-11-09 04:30:52,618 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 04:30:52,667 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 04:30:52,670 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 04:30:52,675 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 04:30:52,675 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 04:30:52,677 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/pthread/stack_longest-1.i Unable to find full path for "g++" [2024-11-09 04:30:54,812 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 04:30:55,089 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 04:30:55,090 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/sv-benchmarks/c/pthread/stack_longest-1.i [2024-11-09 04:30:55,118 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/data/31389abba/05a29a85de904c76b1ddc039c90586bc/FLAG3996e5c3d [2024-11-09 04:30:55,136 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/data/31389abba/05a29a85de904c76b1ddc039c90586bc [2024-11-09 04:30:55,138 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 04:30:55,140 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 04:30:55,142 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 04:30:55,142 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 04:30:55,152 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 04:30:55,152 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:30:55" (1/1) ... [2024-11-09 04:30:55,158 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a32f5fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:30:55, skipping insertion in model container [2024-11-09 04:30:55,158 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:30:55" (1/1) ... [2024-11-09 04:30:55,246 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 04:30:55,913 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 04:30:55,977 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 04:30:56,056 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 04:30:56,305 INFO L204 MainTranslator]: Completed translation [2024-11-09 04:30:56,305 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:30:56 WrapperNode [2024-11-09 04:30:56,305 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 04:30:56,309 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 04:30:56,309 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 04:30:56,309 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 04:30:56,324 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:30:56" (1/1) ... [2024-11-09 04:30:56,382 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:30:56" (1/1) ... [2024-11-09 04:30:56,467 INFO L138 Inliner]: procedures = 277, calls = 832, calls flagged for inlining = 13, calls inlined = 14, statements flattened = 954 [2024-11-09 04:30:56,468 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 04:30:56,469 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 04:30:56,469 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 04:30:56,469 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 04:30:56,479 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:30:56" (1/1) ... [2024-11-09 04:30:56,480 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:30:56" (1/1) ... [2024-11-09 04:30:56,496 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:30:56" (1/1) ... [2024-11-09 04:30:56,496 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:30:56" (1/1) ... [2024-11-09 04:30:56,543 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:30:56" (1/1) ... [2024-11-09 04:30:56,547 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:30:56" (1/1) ... [2024-11-09 04:30:56,550 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:30:56" (1/1) ... [2024-11-09 04:30:56,554 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:30:56" (1/1) ... [2024-11-09 04:30:56,564 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 04:30:56,565 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 04:30:56,565 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 04:30:56,566 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 04:30:56,567 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:30:56" (1/1) ... [2024-11-09 04:30:56,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 04:30:56,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:30:56,626 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 04:30:56,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 04:30:56,665 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-09 04:30:56,665 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-09 04:30:56,666 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-09 04:30:56,666 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-09 04:30:56,666 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-09 04:30:56,667 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 04:30:56,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 04:30:56,668 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-09 04:30:56,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 04:30:56,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 04:30:56,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 04:30:56,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 04:30:56,670 WARN L207 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 04:30:56,864 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 04:30:56,867 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 04:30:58,428 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 04:30:58,429 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 04:31:14,341 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 04:31:14,342 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 04:31:14,342 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:31:14 BoogieIcfgContainer [2024-11-09 04:31:14,343 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 04:31:14,345 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 04:31:14,345 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 04:31:14,348 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 04:31:14,349 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 04:30:55" (1/3) ... [2024-11-09 04:31:14,350 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a7ea18b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 04:31:14, skipping insertion in model container [2024-11-09 04:31:14,350 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:30:56" (2/3) ... [2024-11-09 04:31:14,350 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a7ea18b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 04:31:14, skipping insertion in model container [2024-11-09 04:31:14,351 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:31:14" (3/3) ... [2024-11-09 04:31:14,352 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longest-1.i [2024-11-09 04:31:14,378 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 04:31:14,379 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2024-11-09 04:31:14,379 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 04:31:14,469 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-09 04:31:14,504 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 57 places, 61 transitions, 136 flow [2024-11-09 04:31:14,622 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 865 states, 849 states have (on average 2.9422850412249706) internal successors, (2498), 864 states have internal predecessors, (2498), 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) [2024-11-09 04:31:14,663 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 04:31:14,673 INFO L333 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@15c87ced, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 04:31:14,673 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2024-11-09 04:31:14,679 INFO L276 IsEmpty]: Start isEmpty. Operand has 865 states, 849 states have (on average 2.9422850412249706) internal successors, (2498), 864 states have internal predecessors, (2498), 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) [2024-11-09 04:31:14,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-09 04:31:14,688 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:31:14,689 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:31:14,689 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-09 04:31:14,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:31:14,696 INFO L85 PathProgramCache]: Analyzing trace with hash -771069185, now seen corresponding path program 1 times [2024-11-09 04:31:14,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:31:14,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334543341] [2024-11-09 04:31:14,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:31:14,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:31:15,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:31:15,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:31:15,686 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:31:15,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334543341] [2024-11-09 04:31:15,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334543341] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:31:15,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:31:15,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 04:31:15,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417164407] [2024-11-09 04:31:15,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:31:15,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 04:31:15,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:31:15,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 04:31:15,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:31:15,728 INFO L87 Difference]: Start difference. First operand has 865 states, 849 states have (on average 2.9422850412249706) internal successors, (2498), 864 states have internal predecessors, (2498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 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) [2024-11-09 04:31:15,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:31:15,976 INFO L93 Difference]: Finished difference Result 1603 states and 4697 transitions. [2024-11-09 04:31:15,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 04:31:15,979 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 [2024-11-09 04:31:15,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:31:15,999 INFO L225 Difference]: With dead ends: 1603 [2024-11-09 04:31:16,000 INFO L226 Difference]: Without dead ends: 744 [2024-11-09 04:31:16,006 INFO L431 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 [2024-11-09 04:31:16,009 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 73 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 04:31:16,011 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 43 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 04:31:16,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2024-11-09 04:31:16,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2024-11-09 04:31:16,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 744 states, 732 states have (on average 2.7540983606557377) internal successors, (2016), 743 states have internal predecessors, (2016), 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) [2024-11-09 04:31:16,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 2016 transitions. [2024-11-09 04:31:16,097 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 2016 transitions. Word has length 9 [2024-11-09 04:31:16,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:31:16,097 INFO L471 AbstractCegarLoop]: Abstraction has 744 states and 2016 transitions. [2024-11-09 04:31:16,098 INFO L472 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) [2024-11-09 04:31:16,098 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 2016 transitions. [2024-11-09 04:31:16,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-09 04:31:16,099 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:31:16,100 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:31:16,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 04:31:16,100 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-09 04:31:16,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:31:16,101 INFO L85 PathProgramCache]: Analyzing trace with hash -771069184, now seen corresponding path program 1 times [2024-11-09 04:31:16,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:31:16,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232176059] [2024-11-09 04:31:16,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:31:16,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:31:16,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:31:17,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:31:17,485 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:31:17,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232176059] [2024-11-09 04:31:17,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232176059] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:31:17,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:31:17,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 04:31:17,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624834788] [2024-11-09 04:31:17,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:31:17,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 04:31:17,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:31:17,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 04:31:17,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 04:31:17,490 INFO L87 Difference]: Start difference. First operand 744 states and 2016 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2024-11-09 04:31:17,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:31:17,934 INFO L93 Difference]: Finished difference Result 1803 states and 4998 transitions. [2024-11-09 04:31:17,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 04:31:17,935 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 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 [2024-11-09 04:31:17,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:31:17,945 INFO L225 Difference]: With dead ends: 1803 [2024-11-09 04:31:17,946 INFO L226 Difference]: Without dead ends: 1101 [2024-11-09 04:31:17,948 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-09 04:31:17,949 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 96 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 04:31:17,950 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 117 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 04:31:17,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2024-11-09 04:31:17,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 984. [2024-11-09 04:31:17,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 972 states have (on average 2.7983539094650207) internal successors, (2720), 983 states have internal predecessors, (2720), 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) [2024-11-09 04:31:18,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 2720 transitions. [2024-11-09 04:31:18,007 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 2720 transitions. Word has length 9 [2024-11-09 04:31:18,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:31:18,007 INFO L471 AbstractCegarLoop]: Abstraction has 984 states and 2720 transitions. [2024-11-09 04:31:18,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2024-11-09 04:31:18,008 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 2720 transitions. [2024-11-09 04:31:18,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-09 04:31:18,010 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:31:18,010 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:31:18,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 04:31:18,011 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-09 04:31:18,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:31:18,011 INFO L85 PathProgramCache]: Analyzing trace with hash -689997470, now seen corresponding path program 1 times [2024-11-09 04:31:18,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:31:18,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545665000] [2024-11-09 04:31:18,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:31:18,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:31:18,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:31:18,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:31:18,407 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:31:18,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545665000] [2024-11-09 04:31:18,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545665000] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:31:18,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:31:18,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 04:31:18,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633873992] [2024-11-09 04:31:18,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:31:18,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 04:31:18,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:31:18,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 04:31:18,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:31:18,414 INFO L87 Difference]: Start difference. First operand 984 states and 2720 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 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) [2024-11-09 04:31:18,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:31:18,636 INFO L93 Difference]: Finished difference Result 1769 states and 4857 transitions. [2024-11-09 04:31:18,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 04:31:18,637 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 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 [2024-11-09 04:31:18,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:31:18,648 INFO L225 Difference]: With dead ends: 1769 [2024-11-09 04:31:18,648 INFO L226 Difference]: Without dead ends: 1064 [2024-11-09 04:31:18,650 INFO L431 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 [2024-11-09 04:31:18,652 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 60 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 04:31:18,652 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 76 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 04:31:18,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1064 states. [2024-11-09 04:31:18,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1064 to 1036. [2024-11-09 04:31:18,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1036 states, 1024 states have (on average 2.755859375) internal successors, (2822), 1035 states have internal predecessors, (2822), 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) [2024-11-09 04:31:18,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 2822 transitions. [2024-11-09 04:31:18,702 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 2822 transitions. Word has length 12 [2024-11-09 04:31:18,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:31:18,704 INFO L471 AbstractCegarLoop]: Abstraction has 1036 states and 2822 transitions. [2024-11-09 04:31:18,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 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) [2024-11-09 04:31:18,704 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 2822 transitions. [2024-11-09 04:31:18,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-09 04:31:18,706 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:31:18,706 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:31:18,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 04:31:18,707 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-09 04:31:18,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:31:18,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1532349115, now seen corresponding path program 1 times [2024-11-09 04:31:18,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:31:18,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129618291] [2024-11-09 04:31:18,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:31:18,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:31:18,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:31:19,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:31:19,085 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:31:19,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129618291] [2024-11-09 04:31:19,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129618291] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:31:19,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:31:19,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 04:31:19,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816557320] [2024-11-09 04:31:19,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:31:19,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 04:31:19,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:31:19,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 04:31:19,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:31:19,088 INFO L87 Difference]: Start difference. First operand 1036 states and 2822 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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) [2024-11-09 04:31:19,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:31:19,323 INFO L93 Difference]: Finished difference Result 1647 states and 4450 transitions. [2024-11-09 04:31:19,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 04:31:19,324 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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 [2024-11-09 04:31:19,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:31:19,338 INFO L225 Difference]: With dead ends: 1647 [2024-11-09 04:31:19,338 INFO L226 Difference]: Without dead ends: 1521 [2024-11-09 04:31:19,340 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 04:31:19,344 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 65 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 04:31:19,344 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 98 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 04:31:19,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1521 states. [2024-11-09 04:31:19,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1521 to 1120. [2024-11-09 04:31:19,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1120 states, 1108 states have (on average 2.7454873646209386) internal successors, (3042), 1119 states have internal predecessors, (3042), 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) [2024-11-09 04:31:19,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1120 states to 1120 states and 3042 transitions. [2024-11-09 04:31:19,423 INFO L78 Accepts]: Start accepts. Automaton has 1120 states and 3042 transitions. Word has length 13 [2024-11-09 04:31:19,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:31:19,423 INFO L471 AbstractCegarLoop]: Abstraction has 1120 states and 3042 transitions. [2024-11-09 04:31:19,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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) [2024-11-09 04:31:19,424 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states and 3042 transitions. [2024-11-09 04:31:19,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-09 04:31:19,425 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:31:19,426 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:31:19,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 04:31:19,426 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-09 04:31:19,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:31:19,428 INFO L85 PathProgramCache]: Analyzing trace with hash 845857376, now seen corresponding path program 1 times [2024-11-09 04:31:19,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:31:19,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345185070] [2024-11-09 04:31:19,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:31:19,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:31:19,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:31:19,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:31:19,692 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:31:19,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345185070] [2024-11-09 04:31:19,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345185070] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:31:19,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:31:19,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 04:31:19,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081824842] [2024-11-09 04:31:19,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:31:19,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 04:31:19,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:31:19,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 04:31:19,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:31:19,696 INFO L87 Difference]: Start difference. First operand 1120 states and 3042 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 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) [2024-11-09 04:31:19,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:31:19,857 INFO L93 Difference]: Finished difference Result 1358 states and 3635 transitions. [2024-11-09 04:31:19,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 04:31:19,857 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 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 [2024-11-09 04:31:19,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:31:19,869 INFO L225 Difference]: With dead ends: 1358 [2024-11-09 04:31:19,869 INFO L226 Difference]: Without dead ends: 1271 [2024-11-09 04:31:19,870 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:31:19,871 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 35 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:31:19,872 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 42 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:31:19,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1271 states. [2024-11-09 04:31:19,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1271 to 1061. [2024-11-09 04:31:19,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1061 states, 1049 states have (on average 2.7054337464251668) internal successors, (2838), 1060 states have internal predecessors, (2838), 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) [2024-11-09 04:31:19,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 2838 transitions. [2024-11-09 04:31:19,921 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 2838 transitions. Word has length 15 [2024-11-09 04:31:19,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:31:19,921 INFO L471 AbstractCegarLoop]: Abstraction has 1061 states and 2838 transitions. [2024-11-09 04:31:19,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 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) [2024-11-09 04:31:19,922 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 2838 transitions. [2024-11-09 04:31:19,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-09 04:31:19,924 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:31:19,924 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:31:19,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 04:31:19,925 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-09 04:31:19,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:31:19,925 INFO L85 PathProgramCache]: Analyzing trace with hash -46825, now seen corresponding path program 1 times [2024-11-09 04:31:19,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:31:19,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2510471] [2024-11-09 04:31:19,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:31:19,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:31:19,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:31:20,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:31:20,359 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:31:20,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2510471] [2024-11-09 04:31:20,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2510471] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:31:20,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:31:20,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 04:31:20,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932042760] [2024-11-09 04:31:20,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:31:20,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 04:31:20,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:31:20,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 04:31:20,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:31:20,362 INFO L87 Difference]: Start difference. First operand 1061 states and 2838 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 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) [2024-11-09 04:31:20,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:31:20,506 INFO L93 Difference]: Finished difference Result 1958 states and 5293 transitions. [2024-11-09 04:31:20,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 04:31:20,507 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 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 [2024-11-09 04:31:20,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:31:20,517 INFO L225 Difference]: With dead ends: 1958 [2024-11-09 04:31:20,518 INFO L226 Difference]: Without dead ends: 1004 [2024-11-09 04:31:20,520 INFO L431 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 [2024-11-09 04:31:20,522 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 16 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 37 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 [2024-11-09 04:31:20,523 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 37 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:31:20,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2024-11-09 04:31:20,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 992. [2024-11-09 04:31:20,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 992 states, 980 states have (on average 2.7112244897959186) internal successors, (2657), 991 states have internal predecessors, (2657), 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) [2024-11-09 04:31:20,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 992 states to 992 states and 2657 transitions. [2024-11-09 04:31:20,574 INFO L78 Accepts]: Start accepts. Automaton has 992 states and 2657 transitions. Word has length 15 [2024-11-09 04:31:20,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:31:20,575 INFO L471 AbstractCegarLoop]: Abstraction has 992 states and 2657 transitions. [2024-11-09 04:31:20,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 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) [2024-11-09 04:31:20,576 INFO L276 IsEmpty]: Start isEmpty. Operand 992 states and 2657 transitions. [2024-11-09 04:31:20,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-09 04:31:20,577 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:31:20,578 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:31:20,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 04:31:20,578 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-09 04:31:20,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:31:20,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1589006556, now seen corresponding path program 1 times [2024-11-09 04:31:20,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:31:20,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652475351] [2024-11-09 04:31:20,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:31:20,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:31:20,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:31:21,823 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:31:21,823 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:31:21,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652475351] [2024-11-09 04:31:21,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652475351] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:31:21,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532396477] [2024-11-09 04:31:21,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:31:21,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:31:21,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:31:21,831 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:31:21,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 04:31:22,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:31:22,247 INFO L255 TraceCheckSpWp]: Trace formula consists of 1760 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-09 04:31:22,253 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:31:22,543 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:31:22,544 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:31:22,869 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:31:22,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532396477] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:31:22,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [707821891] [2024-11-09 04:31:22,877 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:236) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-09 04:31:22,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:31:22,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 14 [2024-11-09 04:31:22,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342421351] [2024-11-09 04:31:22,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 04:31:22,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 04:31:22,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:31:22,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 04:31:22,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2024-11-09 04:31:22,881 INFO L87 Difference]: Start difference. First operand 992 states and 2657 transitions. Second operand has 16 states, 15 states have (on average 4.0) internal successors, (60), 15 states have internal predecessors, (60), 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) [2024-11-09 04:31:24,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:31:24,415 INFO L93 Difference]: Finished difference Result 5234 states and 14574 transitions. [2024-11-09 04:31:24,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-09 04:31:24,416 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.0) internal successors, (60), 15 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-09 04:31:24,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:31:24,447 INFO L225 Difference]: With dead ends: 5234 [2024-11-09 04:31:24,447 INFO L226 Difference]: Without dead ends: 4452 [2024-11-09 04:31:24,451 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=194, Invalid=736, Unknown=0, NotChecked=0, Total=930 [2024-11-09 04:31:24,452 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 865 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 994 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 04:31:24,452 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [865 Valid, 556 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 994 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 04:31:24,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4452 states. [2024-11-09 04:31:24,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4452 to 3352. [2024-11-09 04:31:24,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3352 states, 3340 states have (on average 2.867365269461078) internal successors, (9577), 3351 states have internal predecessors, (9577), 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) [2024-11-09 04:31:24,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3352 states to 3352 states and 9577 transitions. [2024-11-09 04:31:24,749 INFO L78 Accepts]: Start accepts. Automaton has 3352 states and 9577 transitions. Word has length 20 [2024-11-09 04:31:24,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:31:24,749 INFO L471 AbstractCegarLoop]: Abstraction has 3352 states and 9577 transitions. [2024-11-09 04:31:24,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.0) internal successors, (60), 15 states have internal predecessors, (60), 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) [2024-11-09 04:31:24,749 INFO L276 IsEmpty]: Start isEmpty. Operand 3352 states and 9577 transitions. [2024-11-09 04:31:24,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-09 04:31:24,753 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:31:24,753 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:31:24,775 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 04:31:24,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-09 04:31:24,958 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-09 04:31:24,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:31:24,959 INFO L85 PathProgramCache]: Analyzing trace with hash -656883794, now seen corresponding path program 1 times [2024-11-09 04:31:24,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:31:24,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41145170] [2024-11-09 04:31:24,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:31:24,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:31:25,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:31:25,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:31:25,290 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:31:25,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41145170] [2024-11-09 04:31:25,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41145170] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:31:25,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:31:25,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 04:31:25,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955603931] [2024-11-09 04:31:25,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:31:25,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 04:31:25,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:31:25,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 04:31:25,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:31:25,293 INFO L87 Difference]: Start difference. First operand 3352 states and 9577 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2024-11-09 04:31:25,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:31:25,446 INFO L93 Difference]: Finished difference Result 3352 states and 9577 transitions. [2024-11-09 04:31:25,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 04:31:25,446 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 22 [2024-11-09 04:31:25,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:31:25,473 INFO L225 Difference]: With dead ends: 3352 [2024-11-09 04:31:25,473 INFO L226 Difference]: Without dead ends: 3191 [2024-11-09 04:31:25,476 INFO L431 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 [2024-11-09 04:31:25,477 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 56 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:31:25,477 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 41 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:31:25,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3191 states. [2024-11-09 04:31:25,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3191 to 3191. [2024-11-09 04:31:25,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3191 states, 3182 states have (on average 2.870207416719045) internal successors, (9133), 3190 states have internal predecessors, (9133), 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) [2024-11-09 04:31:25,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3191 states to 3191 states and 9133 transitions. [2024-11-09 04:31:25,598 INFO L78 Accepts]: Start accepts. Automaton has 3191 states and 9133 transitions. Word has length 22 [2024-11-09 04:31:25,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:31:25,599 INFO L471 AbstractCegarLoop]: Abstraction has 3191 states and 9133 transitions. [2024-11-09 04:31:25,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2024-11-09 04:31:25,599 INFO L276 IsEmpty]: Start isEmpty. Operand 3191 states and 9133 transitions. [2024-11-09 04:31:25,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-09 04:31:25,601 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:31:25,601 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:31:25,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 04:31:25,606 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-09 04:31:25,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:31:25,606 INFO L85 PathProgramCache]: Analyzing trace with hash -656883793, now seen corresponding path program 1 times [2024-11-09 04:31:25,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:31:25,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42938861] [2024-11-09 04:31:25,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:31:25,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:31:25,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:31:26,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:31:26,005 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:31:26,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42938861] [2024-11-09 04:31:26,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42938861] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:31:26,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:31:26,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 04:31:26,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336013197] [2024-11-09 04:31:26,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:31:26,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 04:31:26,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:31:26,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 04:31:26,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:31:26,007 INFO L87 Difference]: Start difference. First operand 3191 states and 9133 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2024-11-09 04:31:26,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:31:26,138 INFO L93 Difference]: Finished difference Result 4671 states and 13545 transitions. [2024-11-09 04:31:26,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 04:31:26,139 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 22 [2024-11-09 04:31:26,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:31:26,156 INFO L225 Difference]: With dead ends: 4671 [2024-11-09 04:31:26,156 INFO L226 Difference]: Without dead ends: 1803 [2024-11-09 04:31:26,161 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:31:26,162 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 32 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:31:26,162 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 37 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:31:26,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1803 states. [2024-11-09 04:31:26,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1803 to 1619. [2024-11-09 04:31:26,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1619 states, 1610 states have (on average 2.811801242236025) internal successors, (4527), 1618 states have internal predecessors, (4527), 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) [2024-11-09 04:31:26,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1619 states to 1619 states and 4527 transitions. [2024-11-09 04:31:26,225 INFO L78 Accepts]: Start accepts. Automaton has 1619 states and 4527 transitions. Word has length 22 [2024-11-09 04:31:26,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:31:26,226 INFO L471 AbstractCegarLoop]: Abstraction has 1619 states and 4527 transitions. [2024-11-09 04:31:26,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2024-11-09 04:31:26,226 INFO L276 IsEmpty]: Start isEmpty. Operand 1619 states and 4527 transitions. [2024-11-09 04:31:26,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-09 04:31:26,228 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:31:26,228 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:31:26,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 04:31:26,228 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-09 04:31:26,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:31:26,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1195311310, now seen corresponding path program 1 times [2024-11-09 04:31:26,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:31:26,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136118592] [2024-11-09 04:31:26,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:31:26,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:31:26,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:31:27,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:31:27,254 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:31:27,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136118592] [2024-11-09 04:31:27,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136118592] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:31:27,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:31:27,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 04:31:27,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123403238] [2024-11-09 04:31:27,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:31:27,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 04:31:27,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:31:27,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 04:31:27,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 04:31:27,257 INFO L87 Difference]: Start difference. First operand 1619 states and 4527 transitions. Second operand has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 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) [2024-11-09 04:31:27,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:31:27,569 INFO L93 Difference]: Finished difference Result 1976 states and 5449 transitions. [2024-11-09 04:31:27,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 04:31:27,570 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 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 23 [2024-11-09 04:31:27,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:31:27,588 INFO L225 Difference]: With dead ends: 1976 [2024-11-09 04:31:27,592 INFO L226 Difference]: Without dead ends: 1963 [2024-11-09 04:31:27,593 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-09 04:31:27,595 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 68 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 04:31:27,595 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 161 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 04:31:27,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1963 states. [2024-11-09 04:31:27,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1963 to 1827. [2024-11-09 04:31:27,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1827 states, 1818 states have (on average 2.8173817381738173) internal successors, (5122), 1826 states have internal predecessors, (5122), 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) [2024-11-09 04:31:27,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1827 states to 1827 states and 5122 transitions. [2024-11-09 04:31:27,674 INFO L78 Accepts]: Start accepts. Automaton has 1827 states and 5122 transitions. Word has length 23 [2024-11-09 04:31:27,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:31:27,675 INFO L471 AbstractCegarLoop]: Abstraction has 1827 states and 5122 transitions. [2024-11-09 04:31:27,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 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) [2024-11-09 04:31:27,676 INFO L276 IsEmpty]: Start isEmpty. Operand 1827 states and 5122 transitions. [2024-11-09 04:31:27,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-09 04:31:27,677 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:31:27,678 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:31:27,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 04:31:27,678 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-09 04:31:27,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:31:27,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1526849184, now seen corresponding path program 1 times [2024-11-09 04:31:27,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:31:27,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258990437] [2024-11-09 04:31:27,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:31:27,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:31:27,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:31:27,864 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:31:27,864 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:31:27,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258990437] [2024-11-09 04:31:27,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258990437] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:31:27,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:31:27,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 04:31:27,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735446519] [2024-11-09 04:31:27,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:31:27,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 04:31:27,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:31:27,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 04:31:27,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:31:27,866 INFO L87 Difference]: Start difference. First operand 1827 states and 5122 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2024-11-09 04:31:28,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:31:28,027 INFO L93 Difference]: Finished difference Result 3074 states and 8599 transitions. [2024-11-09 04:31:28,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 04:31:28,028 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 26 [2024-11-09 04:31:28,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:31:28,045 INFO L225 Difference]: With dead ends: 3074 [2024-11-09 04:31:28,045 INFO L226 Difference]: Without dead ends: 2817 [2024-11-09 04:31:28,047 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:31:28,047 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 38 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:31:28,048 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 40 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:31:28,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2817 states. [2024-11-09 04:31:28,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2817 to 2091. [2024-11-09 04:31:28,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2091 states, 2082 states have (on average 2.79731027857829) internal successors, (5824), 2090 states have internal predecessors, (5824), 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) [2024-11-09 04:31:28,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2091 states to 2091 states and 5824 transitions. [2024-11-09 04:31:28,132 INFO L78 Accepts]: Start accepts. Automaton has 2091 states and 5824 transitions. Word has length 26 [2024-11-09 04:31:28,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:31:28,133 INFO L471 AbstractCegarLoop]: Abstraction has 2091 states and 5824 transitions. [2024-11-09 04:31:28,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2024-11-09 04:31:28,134 INFO L276 IsEmpty]: Start isEmpty. Operand 2091 states and 5824 transitions. [2024-11-09 04:31:28,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-09 04:31:28,135 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:31:28,136 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:31:28,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 04:31:28,136 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-09 04:31:28,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:31:28,137 INFO L85 PathProgramCache]: Analyzing trace with hash 55688424, now seen corresponding path program 1 times [2024-11-09 04:31:28,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:31:28,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992622973] [2024-11-09 04:31:28,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:31:28,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:31:28,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:31:28,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:31:28,384 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:31:28,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992622973] [2024-11-09 04:31:28,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992622973] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:31:28,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:31:28,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 04:31:28,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360150647] [2024-11-09 04:31:28,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:31:28,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 04:31:28,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:31:28,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 04:31:28,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 04:31:28,386 INFO L87 Difference]: Start difference. First operand 2091 states and 5824 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 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) [2024-11-09 04:31:28,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:31:28,582 INFO L93 Difference]: Finished difference Result 4261 states and 12052 transitions. [2024-11-09 04:31:28,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 04:31:28,583 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 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 26 [2024-11-09 04:31:28,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:31:28,600 INFO L225 Difference]: With dead ends: 4261 [2024-11-09 04:31:28,601 INFO L226 Difference]: Without dead ends: 2822 [2024-11-09 04:31:28,604 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 04:31:28,605 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 48 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 04:31:28,605 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 101 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 04:31:28,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2822 states. [2024-11-09 04:31:28,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2822 to 2561. [2024-11-09 04:31:28,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2561 states, 2552 states have (on average 2.844435736677116) internal successors, (7259), 2560 states have internal predecessors, (7259), 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) [2024-11-09 04:31:28,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2561 states to 2561 states and 7259 transitions. [2024-11-09 04:31:28,701 INFO L78 Accepts]: Start accepts. Automaton has 2561 states and 7259 transitions. Word has length 26 [2024-11-09 04:31:28,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:31:28,701 INFO L471 AbstractCegarLoop]: Abstraction has 2561 states and 7259 transitions. [2024-11-09 04:31:28,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 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) [2024-11-09 04:31:28,702 INFO L276 IsEmpty]: Start isEmpty. Operand 2561 states and 7259 transitions. [2024-11-09 04:31:28,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-09 04:31:28,703 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:31:28,704 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:31:28,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 04:31:28,704 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-09 04:31:28,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:31:28,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1757620825, now seen corresponding path program 1 times [2024-11-09 04:31:28,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:31:28,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159071631] [2024-11-09 04:31:28,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:31:28,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:31:28,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:31:30,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:31:30,946 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:31:30,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159071631] [2024-11-09 04:31:30,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159071631] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:31:30,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:31:30,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-09 04:31:30,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391294734] [2024-11-09 04:31:30,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:31:30,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 04:31:30,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:31:30,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 04:31:30,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-09 04:31:30,948 INFO L87 Difference]: Start difference. First operand 2561 states and 7259 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 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) [2024-11-09 04:31:31,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:31:31,694 INFO L93 Difference]: Finished difference Result 5886 states and 16862 transitions. [2024-11-09 04:31:31,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 04:31:31,695 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 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 27 [2024-11-09 04:31:31,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:31:31,726 INFO L225 Difference]: With dead ends: 5886 [2024-11-09 04:31:31,726 INFO L226 Difference]: Without dead ends: 4754 [2024-11-09 04:31:31,730 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2024-11-09 04:31:31,732 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 171 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 04:31:31,732 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 338 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 04:31:31,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4754 states. [2024-11-09 04:31:31,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4754 to 3010. [2024-11-09 04:31:31,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3010 states, 3001 states have (on average 2.870709763412196) internal successors, (8615), 3009 states have internal predecessors, (8615), 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) [2024-11-09 04:31:31,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3010 states to 3010 states and 8615 transitions. [2024-11-09 04:31:31,880 INFO L78 Accepts]: Start accepts. Automaton has 3010 states and 8615 transitions. Word has length 27 [2024-11-09 04:31:31,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:31:31,880 INFO L471 AbstractCegarLoop]: Abstraction has 3010 states and 8615 transitions. [2024-11-09 04:31:31,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 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) [2024-11-09 04:31:31,881 INFO L276 IsEmpty]: Start isEmpty. Operand 3010 states and 8615 transitions. [2024-11-09 04:31:31,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-09 04:31:31,884 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:31:31,884 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:31:31,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 04:31:31,885 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-09 04:31:31,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:31:31,885 INFO L85 PathProgramCache]: Analyzing trace with hash -172907860, now seen corresponding path program 1 times [2024-11-09 04:31:31,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:31:31,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213143872] [2024-11-09 04:31:31,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:31:31,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:31:31,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:31:32,101 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:31:32,101 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:31:32,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213143872] [2024-11-09 04:31:32,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213143872] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:31:32,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588497862] [2024-11-09 04:31:32,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:31:32,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:31:32,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:31:32,103 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:31:32,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 04:31:32,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:31:32,464 INFO L255 TraceCheckSpWp]: Trace formula consists of 1796 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 04:31:32,467 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:31:32,525 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 04:31:32,525 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:31:32,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588497862] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:31:32,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 04:31:32,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-11-09 04:31:32,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52246272] [2024-11-09 04:31:32,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:31:32,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 04:31:32,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:31:32,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 04:31:32,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 04:31:32,530 INFO L87 Difference]: Start difference. First operand 3010 states and 8615 transitions. Second operand has 3 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 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) [2024-11-09 04:31:32,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:31:32,632 INFO L93 Difference]: Finished difference Result 3010 states and 8615 transitions. [2024-11-09 04:31:32,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 04:31:32,633 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 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 33 [2024-11-09 04:31:32,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:31:32,655 INFO L225 Difference]: With dead ends: 3010 [2024-11-09 04:31:32,655 INFO L226 Difference]: Without dead ends: 2997 [2024-11-09 04:31:32,656 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 04:31:32,657 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 17 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:31:32,657 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 18 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:31:32,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2997 states. [2024-11-09 04:31:32,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2997 to 2969. [2024-11-09 04:31:32,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2969 states, 2961 states have (on average 2.849375211077339) internal successors, (8437), 2968 states have internal predecessors, (8437), 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) [2024-11-09 04:31:32,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2969 states to 2969 states and 8437 transitions. [2024-11-09 04:31:32,762 INFO L78 Accepts]: Start accepts. Automaton has 2969 states and 8437 transitions. Word has length 33 [2024-11-09 04:31:32,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:31:32,763 INFO L471 AbstractCegarLoop]: Abstraction has 2969 states and 8437 transitions. [2024-11-09 04:31:32,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 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) [2024-11-09 04:31:32,763 INFO L276 IsEmpty]: Start isEmpty. Operand 2969 states and 8437 transitions. [2024-11-09 04:31:32,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-09 04:31:32,766 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:31:32,766 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:31:32,792 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 04:31:32,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-09 04:31:32,967 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-09 04:31:33,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:31:33,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1414504958, now seen corresponding path program 1 times [2024-11-09 04:31:33,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:31:33,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527301676] [2024-11-09 04:31:33,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:31:33,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:31:33,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:31:34,179 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:31:34,180 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:31:34,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527301676] [2024-11-09 04:31:34,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527301676] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:31:34,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51823627] [2024-11-09 04:31:34,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:31:34,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:31:34,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:31:34,183 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:31:34,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 04:31:34,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:31:34,554 INFO L255 TraceCheckSpWp]: Trace formula consists of 1842 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-09 04:31:34,557 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:31:34,976 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:31:34,976 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:31:35,267 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:31:35,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51823627] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:31:35,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [879342775] [2024-11-09 04:31:35,270 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:236) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-09 04:31:35,272 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:31:35,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 16 [2024-11-09 04:31:35,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698672080] [2024-11-09 04:31:35,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 04:31:35,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 04:31:35,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:31:35,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 04:31:35,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2024-11-09 04:31:35,273 INFO L87 Difference]: Start difference. First operand 2969 states and 8437 transitions. Second operand has 18 states, 17 states have (on average 6.0) internal successors, (102), 17 states have internal predecessors, (102), 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) [2024-11-09 04:31:36,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:31:36,478 INFO L93 Difference]: Finished difference Result 10033 states and 28038 transitions. [2024-11-09 04:31:36,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-09 04:31:36,479 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 6.0) internal successors, (102), 17 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2024-11-09 04:31:36,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:31:36,524 INFO L225 Difference]: With dead ends: 10033 [2024-11-09 04:31:36,524 INFO L226 Difference]: Without dead ends: 8421 [2024-11-09 04:31:36,532 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=204, Invalid=788, Unknown=0, NotChecked=0, Total=992 [2024-11-09 04:31:36,533 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 541 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 04:31:36,533 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [541 Valid, 477 Invalid, 834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 817 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 04:31:36,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8421 states. [2024-11-09 04:31:36,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8421 to 6357. [2024-11-09 04:31:36,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6357 states, 6349 states have (on average 2.955111041108836) internal successors, (18762), 6356 states have internal predecessors, (18762), 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) [2024-11-09 04:31:36,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6357 states to 6357 states and 18762 transitions. [2024-11-09 04:31:36,784 INFO L78 Accepts]: Start accepts. Automaton has 6357 states and 18762 transitions. Word has length 34 [2024-11-09 04:31:36,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:31:36,785 INFO L471 AbstractCegarLoop]: Abstraction has 6357 states and 18762 transitions. [2024-11-09 04:31:36,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 6.0) internal successors, (102), 17 states have internal predecessors, (102), 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) [2024-11-09 04:31:36,786 INFO L276 IsEmpty]: Start isEmpty. Operand 6357 states and 18762 transitions. [2024-11-09 04:31:36,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-09 04:31:36,790 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:31:36,790 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:31:36,813 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 04:31:36,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-09 04:31:36,991 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-09 04:31:36,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:31:36,991 INFO L85 PathProgramCache]: Analyzing trace with hash 740877715, now seen corresponding path program 1 times [2024-11-09 04:31:36,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:31:36,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324047372] [2024-11-09 04:31:36,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:31:36,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:31:37,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:31:37,468 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:31:37,468 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:31:37,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324047372] [2024-11-09 04:31:37,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324047372] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:31:37,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330554837] [2024-11-09 04:31:37,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:31:37,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:31:37,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:31:37,471 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:31:37,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 04:31:37,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:31:37,827 INFO L255 TraceCheckSpWp]: Trace formula consists of 1839 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 04:31:37,829 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:31:37,893 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:31:37,894 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:31:37,948 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:31:37,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330554837] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:31:37,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2111596575] [2024-11-09 04:31:37,949 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:236) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-09 04:31:37,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:31:37,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2024-11-09 04:31:37,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965469201] [2024-11-09 04:31:37,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 04:31:37,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 04:31:37,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:31:37,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 04:31:37,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 04:31:37,951 INFO L87 Difference]: Start difference. First operand 6357 states and 18762 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 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) [2024-11-09 04:31:38,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:31:38,177 INFO L93 Difference]: Finished difference Result 8118 states and 23686 transitions. [2024-11-09 04:31:38,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 04:31:38,178 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2024-11-09 04:31:38,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:31:38,208 INFO L225 Difference]: With dead ends: 8118 [2024-11-09 04:31:38,208 INFO L226 Difference]: Without dead ends: 5791 [2024-11-09 04:31:38,214 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 04:31:38,215 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 48 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 04:31:38,215 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 114 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 04:31:38,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5791 states. [2024-11-09 04:31:38,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5791 to 5583. [2024-11-09 04:31:38,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5583 states, 5575 states have (on average 2.909237668161435) internal successors, (16219), 5582 states have internal predecessors, (16219), 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) [2024-11-09 04:31:38,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5583 states to 5583 states and 16219 transitions. [2024-11-09 04:31:38,381 INFO L78 Accepts]: Start accepts. Automaton has 5583 states and 16219 transitions. Word has length 34 [2024-11-09 04:31:38,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:31:38,381 INFO L471 AbstractCegarLoop]: Abstraction has 5583 states and 16219 transitions. [2024-11-09 04:31:38,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 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) [2024-11-09 04:31:38,381 INFO L276 IsEmpty]: Start isEmpty. Operand 5583 states and 16219 transitions. [2024-11-09 04:31:38,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-09 04:31:38,384 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:31:38,385 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:31:38,408 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 04:31:38,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-09 04:31:38,585 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-09 04:31:38,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:31:38,586 INFO L85 PathProgramCache]: Analyzing trace with hash -347853081, now seen corresponding path program 1 times [2024-11-09 04:31:38,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:31:38,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763775393] [2024-11-09 04:31:38,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:31:38,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:31:38,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 04:31:38,759 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 04:31:38,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 04:31:38,905 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-09 04:31:38,905 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 04:31:38,907 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location t2Err2ASSERT_VIOLATIONMEMORY_LEAK (14 of 15 remaining) [2024-11-09 04:31:38,909 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (13 of 15 remaining) [2024-11-09 04:31:38,909 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 15 remaining) [2024-11-09 04:31:38,909 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 15 remaining) [2024-11-09 04:31:38,909 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 15 remaining) [2024-11-09 04:31:38,910 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 15 remaining) [2024-11-09 04:31:38,910 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err2ASSERT_VIOLATIONMEMORY_LEAK (8 of 15 remaining) [2024-11-09 04:31:38,910 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 15 remaining) [2024-11-09 04:31:38,910 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 15 remaining) [2024-11-09 04:31:38,910 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err2ASSERT_VIOLATIONMEMORY_LEAK (5 of 15 remaining) [2024-11-09 04:31:38,910 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 15 remaining) [2024-11-09 04:31:38,911 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 15 remaining) [2024-11-09 04:31:38,911 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err2ASSERT_VIOLATIONMEMORY_LEAK (2 of 15 remaining) [2024-11-09 04:31:38,911 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 15 remaining) [2024-11-09 04:31:38,911 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 15 remaining) [2024-11-09 04:31:38,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-09 04:31:38,915 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:31:39,002 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-09 04:31:39,002 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 04:31:39,005 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 04:31:39 BasicIcfg [2024-11-09 04:31:39,005 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 04:31:39,006 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 04:31:39,006 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 04:31:39,006 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 04:31:39,007 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:31:14" (3/4) ... [2024-11-09 04:31:39,009 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-09 04:31:39,010 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 04:31:39,010 INFO L158 Benchmark]: Toolchain (without parser) took 43870.42ms. Allocated memory was 146.8MB in the beginning and 12.0GB in the end (delta: 11.9GB). Free memory was 107.6MB in the beginning and 11.7GB in the end (delta: -11.6GB). Peak memory consumption was 301.7MB. Max. memory is 16.1GB. [2024-11-09 04:31:39,011 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 102.8MB. Free memory is still 50.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 04:31:39,011 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1166.26ms. Allocated memory is still 146.8MB. Free memory was 107.6MB in the beginning and 104.8MB in the end (delta: 2.8MB). Peak memory consumption was 44.7MB. Max. memory is 16.1GB. [2024-11-09 04:31:39,011 INFO L158 Benchmark]: Boogie Procedure Inliner took 159.87ms. Allocated memory is still 146.8MB. Free memory was 104.8MB in the beginning and 95.6MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-09 04:31:39,011 INFO L158 Benchmark]: Boogie Preprocessor took 95.62ms. Allocated memory is still 146.8MB. Free memory was 95.6MB in the beginning and 89.3MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-09 04:31:39,012 INFO L158 Benchmark]: RCFGBuilder took 17777.44ms. Allocated memory was 146.8MB in the beginning and 10.1GB in the end (delta: 9.9GB). Free memory was 89.3MB in the beginning and 9.7GB in the end (delta: -9.6GB). Peak memory consumption was 683.8MB. Max. memory is 16.1GB. [2024-11-09 04:31:39,012 INFO L158 Benchmark]: TraceAbstraction took 24660.86ms. Allocated memory was 10.1GB in the beginning and 12.0GB in the end (delta: 2.0GB). Free memory was 9.7GB in the beginning and 11.7GB in the end (delta: -2.0GB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 04:31:39,012 INFO L158 Benchmark]: Witness Printer took 3.97ms. Allocated memory is still 12.0GB. Free memory is still 11.7GB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 04:31:39,014 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 102.8MB. Free memory is still 50.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1166.26ms. Allocated memory is still 146.8MB. Free memory was 107.6MB in the beginning and 104.8MB in the end (delta: 2.8MB). Peak memory consumption was 44.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 159.87ms. Allocated memory is still 146.8MB. Free memory was 104.8MB in the beginning and 95.6MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 95.62ms. Allocated memory is still 146.8MB. Free memory was 95.6MB in the beginning and 89.3MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 17777.44ms. Allocated memory was 146.8MB in the beginning and 10.1GB in the end (delta: 9.9GB). Free memory was 89.3MB in the beginning and 9.7GB in the end (delta: -9.6GB). Peak memory consumption was 683.8MB. Max. memory is 16.1GB. * TraceAbstraction took 24660.86ms. Allocated memory was 10.1GB in the beginning and 12.0GB in the end (delta: 2.0GB). Free memory was 9.7GB in the beginning and 11.7GB in the end (delta: -2.0GB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.97ms. Allocated memory is still 12.0GB. Free memory is still 11.7GB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 20. Possible FailurePath: [L935] 0 static int top=0; [L936] 0 static unsigned int arr[(800)]; [L937] 0 pthread_mutex_t m; [L938] 0 _Bool flag=(0); [L1020] 0 pthread_t id1, id2; [L1022] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [arr={3:0}, flag=0, id1=-3, m={4:0}, top=0] [L989] 1 int i; [L990] 1 unsigned int tmp; [L991] 1 i=0 VAL [\old(arg)={0:0}, arg={0:0}, arr={3:0}, flag=0, i=0, m={4:0}, top=0] [L991] COND FALSE 1 !(i<(800)) VAL [\old(arg)={0:0}, arg={0:0}, arr={3:0}, flag=0, i=0, m={4:0}, top=0] [L991] COND TRUE 1 i<(800) VAL [\old(arg)={0:0}, arg={0:0}, arr={3:0}, flag=0, i=0, m={4:0}, top=0] [L994] 1 tmp = __VERIFIER_nondet_uint() [L995] CALL 1 assume_abort_if_not(tmp < (800)) [L23] COND FALSE 1 !(!cond) [L995] RET 1 assume_abort_if_not(tmp < (800)) [L996] CALL, EXPR 1 push(arr,tmp) [L961] COND FALSE 1 !(top==(800)) [L968] CALL, EXPR 1 get_top() [L953] 1 return top; [L968] RET, EXPR 1 get_top() [L968] 1 stack[get_top()] = x [L969] CALL 1 inc_top() [L945] 1 top++ [L969] RET 1 inc_top() [L971] 1 return 0; VAL [\old(stack)={3:0}, \old(x)=799, \result=0, arr={3:0}, flag=0, m={4:0}, stack={3:0}, top=1, x=799] [L996] RET, EXPR 1 push(arr,tmp) [L996] COND FALSE 1 !(push(arr,tmp)==(-1)) [L1023] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [arr={3:0}, flag=0, id1=-3, id2=-2, m={4:0}, top=1] [L1005] 2 int i; [L1006] 2 i=0 VAL [\old(arg)={0:0}, arg={0:0}, arr={3:0}, flag=0, i=0, m={4:0}, top=1] [L1006] COND FALSE 2 !(i<(800)) VAL [\old(arg)={0:0}, arg={0:0}, arr={3:0}, flag=0, i=0, m={4:0}, top=1] [L1006] COND TRUE 2 i<(800) VAL [\old(arg)={0:0}, arg={0:0}, arr={3:0}, flag=0, i=0, m={4:0}, top=1] [L998] 1 flag=(1) VAL [\old(arg)={0:0}, arg={0:0}, arr={3:0}, flag=1, i=0, m={4:0}, tmp=799, top=1] [L1009] COND TRUE 2 \read(flag) [L1011] CALL, EXPR 2 pop(arr) [L975] CALL, EXPR 2 get_top() [L953] 2 return top; [L975] RET, EXPR 2 get_top() [L975] COND FALSE 2 !(get_top()==0) [L982] CALL 2 dec_top() [L949] 2 top-- [L982] RET 2 dec_top() [L983] CALL, EXPR 2 get_top() [L953] 2 return top; [L983] RET, EXPR 2 get_top() [L983] EXPR 2 stack[get_top()] [L983] 2 return stack[get_top()]; [L1011] RET, EXPR 2 pop(arr) [L1011] COND FALSE 2 !(!(pop(arr)!=(-2))) [L1006] 2 i++ VAL [\old(arg)={0:0}, arg={0:0}, arr={3:0}, flag=1, i=1, m={4:0}, top=0] [L1006] COND FALSE 2 !(i<(800)) VAL [\old(arg)={0:0}, arg={0:0}, arr={3:0}, flag=1, i=1, m={4:0}, top=0] [L1006] COND TRUE 2 i<(800) VAL [\old(arg)={0:0}, arg={0:0}, arr={3:0}, flag=1, i=1, m={4:0}, top=0] [L1009] COND TRUE 2 \read(flag) [L1011] CALL, EXPR 2 pop(arr) [L975] CALL, EXPR 2 get_top() [L953] 2 return top; [L975] RET, EXPR 2 get_top() [L975] COND TRUE 2 get_top()==0 [L978] 2 return (-2); VAL [\old(stack)={3:0}, \result=-2, arr={3:0}, flag=1, m={4:0}, stack={3:0}, top=0] [L1011] RET, EXPR 2 pop(arr) [L1011] COND TRUE 2 !(pop(arr)!=(-2)) [L1012] CALL 2 error() [L941] CALL 2 reach_error() [L20] COND FALSE 2 !(0) VAL [arr={3:0}, flag=1, m={4:0}, top=0] [L20] 2 __assert_fail ("0", "stack_longest-1.c", 3, __extension__ __PRETTY_FUNCTION__) VAL [arr={3:0}, flag=1, m={4:0}, top=0] - UnprovableResult [Line: 1018]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1023]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1022]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 20]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 93 locations, 15 error locations. Started 1 CEGAR loops. OverallTime: 24.4s, OverallIterations: 17, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 6.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2229 SdHoareTripleChecker+Valid, 4.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2229 mSDsluCounter, 2296 SdHoareTripleChecker+Invalid, 3.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1731 mSDsCounter, 43 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3816 IncrementalHoareTripleChecker+Invalid, 3859 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 43 mSolverCounterUnsat, 565 mSDtfsCounter, 3816 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 308 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6357occurred in iteration=15, InterpolantAutomatonStates: 107, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.6s AutomataMinimizationTime, 16 MinimizatonAttempts, 7219 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 11.2s InterpolantComputationTime, 498 NumberOfCodeBlocks, 498 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 526 ConstructedInterpolants, 0 QuantifiedInterpolants, 4488 SizeOfPredicates, 14 NumberOfNonLiveVariables, 7237 ConjunctsInSsa, 61 ConjunctsInUnsatCore, 23 InterpolantComputations, 13 PerfectInterpolantSequences, 7/74 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-09 04:31:39,049 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/stack_longest-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 529fe0895c01c52d9b18b51c32204a307faf547c0c07b22bc1a431308affcf90 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 04:31:41,559 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 04:31:41,654 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2024-11-09 04:31:41,661 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 04:31:41,662 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 04:31:41,712 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 04:31:41,712 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 04:31:41,713 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 04:31:41,714 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 04:31:41,714 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 04:31:41,715 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 04:31:41,715 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 04:31:41,716 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 04:31:41,717 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 04:31:41,717 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 04:31:41,718 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 04:31:41,718 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 04:31:41,719 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 04:31:41,719 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 04:31:41,720 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 04:31:41,721 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 04:31:41,721 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 04:31:41,722 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 04:31:41,722 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 04:31:41,723 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 04:31:41,723 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 04:31:41,723 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 04:31:41,724 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 04:31:41,724 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-09 04:31:41,725 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 04:31:41,725 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-09 04:31:41,726 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 04:31:41,726 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 04:31:41,726 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 04:31:41,727 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 04:31:41,727 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 04:31:41,728 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 04:31:41,728 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 04:31:41,728 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 04:31:41,729 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 04:31:41,729 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 04:31:41,730 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-09 04:31:41,730 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-09 04:31:41,730 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 04:31:41,730 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 04:31:41,731 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 529fe0895c01c52d9b18b51c32204a307faf547c0c07b22bc1a431308affcf90 [2024-11-09 04:31:42,138 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 04:31:42,169 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 04:31:42,172 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 04:31:42,174 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 04:31:42,174 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 04:31:42,176 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/pthread/stack_longest-1.i Unable to find full path for "g++" [2024-11-09 04:31:44,296 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 04:31:44,578 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 04:31:44,578 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/sv-benchmarks/c/pthread/stack_longest-1.i [2024-11-09 04:31:44,600 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/data/783dd62f6/8e36177c9a8c4baa8db9d2738100940f/FLAG2c265613a [2024-11-09 04:31:44,612 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/data/783dd62f6/8e36177c9a8c4baa8db9d2738100940f [2024-11-09 04:31:44,615 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 04:31:44,616 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 04:31:44,617 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 04:31:44,618 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 04:31:44,625 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 04:31:44,626 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:31:44" (1/1) ... [2024-11-09 04:31:44,627 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@211dbe51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:31:44, skipping insertion in model container [2024-11-09 04:31:44,628 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:31:44" (1/1) ... [2024-11-09 04:31:44,691 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 04:31:45,357 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 04:31:45,421 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 04:31:45,485 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 04:31:45,684 INFO L204 MainTranslator]: Completed translation [2024-11-09 04:31:45,685 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:31:45 WrapperNode [2024-11-09 04:31:45,685 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 04:31:45,687 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 04:31:45,687 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 04:31:45,687 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 04:31:45,694 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:31:45" (1/1) ... [2024-11-09 04:31:45,742 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:31:45" (1/1) ... [2024-11-09 04:31:45,836 INFO L138 Inliner]: procedures = 281, calls = 832, calls flagged for inlining = 13, calls inlined = 14, statements flattened = 950 [2024-11-09 04:31:45,836 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 04:31:45,837 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 04:31:45,837 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 04:31:45,837 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 04:31:45,852 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:31:45" (1/1) ... [2024-11-09 04:31:45,852 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:31:45" (1/1) ... [2024-11-09 04:31:45,873 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:31:45" (1/1) ... [2024-11-09 04:31:45,873 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:31:45" (1/1) ... [2024-11-09 04:31:45,938 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:31:45" (1/1) ... [2024-11-09 04:31:45,943 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:31:45" (1/1) ... [2024-11-09 04:31:45,955 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:31:45" (1/1) ... [2024-11-09 04:31:45,961 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:31:45" (1/1) ... [2024-11-09 04:31:45,974 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 04:31:45,979 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 04:31:45,981 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 04:31:45,981 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 04:31:45,984 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:31:45" (1/1) ... [2024-11-09 04:31:45,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 04:31:46,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:31:46,018 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 04:31:46,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 04:31:46,056 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2024-11-09 04:31:46,056 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-09 04:31:46,056 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-09 04:31:46,056 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-09 04:31:46,057 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-09 04:31:46,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2024-11-09 04:31:46,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-09 04:31:46,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2024-11-09 04:31:46,057 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-09 04:31:46,060 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-09 04:31:46,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 04:31:46,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 04:31:46,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 04:31:46,062 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 04:31:46,283 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 04:31:46,285 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 04:31:48,244 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 04:31:48,245 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 04:32:15,755 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 04:32:15,755 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 04:32:15,755 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:32:15 BoogieIcfgContainer [2024-11-09 04:32:15,756 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 04:32:15,762 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 04:32:15,762 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 04:32:15,769 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 04:32:15,769 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 04:31:44" (1/3) ... [2024-11-09 04:32:15,770 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29fe57aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 04:32:15, skipping insertion in model container [2024-11-09 04:32:15,770 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:31:45" (2/3) ... [2024-11-09 04:32:15,770 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29fe57aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 04:32:15, skipping insertion in model container [2024-11-09 04:32:15,770 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:32:15" (3/3) ... [2024-11-09 04:32:15,772 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longest-1.i [2024-11-09 04:32:15,791 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 04:32:15,792 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2024-11-09 04:32:15,792 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 04:32:15,914 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-09 04:32:15,953 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 57 places, 61 transitions, 136 flow [2024-11-09 04:32:16,063 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 865 states, 849 states have (on average 2.9422850412249706) internal successors, (2498), 864 states have internal predecessors, (2498), 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) [2024-11-09 04:32:16,089 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 04:32:16,096 INFO L333 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@36320307, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 04:32:16,096 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2024-11-09 04:32:16,101 INFO L276 IsEmpty]: Start isEmpty. Operand has 865 states, 849 states have (on average 2.9422850412249706) internal successors, (2498), 864 states have internal predecessors, (2498), 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) [2024-11-09 04:32:16,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-09 04:32:16,111 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:32:16,111 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:32:16,112 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-09 04:32:16,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:32:16,118 INFO L85 PathProgramCache]: Analyzing trace with hash 86542319, now seen corresponding path program 1 times [2024-11-09 04:32:16,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:32:16,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1830659402] [2024-11-09 04:32:16,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:32:16,139 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:32:16,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:32:16,142 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 04:32:16,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-09 04:32:16,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:32:16,638 INFO L255 TraceCheckSpWp]: Trace formula consists of 858 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 04:32:16,644 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:32:17,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:32:17,380 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:32:17,380 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:32:17,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1830659402] [2024-11-09 04:32:17,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1830659402] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:32:17,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:32:17,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 04:32:17,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853783508] [2024-11-09 04:32:17,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:32:17,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 04:32:17,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:32:17,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 04:32:17,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 04:32:17,476 INFO L87 Difference]: Start difference. First operand has 865 states, 849 states have (on average 2.9422850412249706) internal successors, (2498), 864 states have internal predecessors, (2498), 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 5 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2024-11-09 04:32:18,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:32:18,781 INFO L93 Difference]: Finished difference Result 2070 states and 6075 transitions. [2024-11-09 04:32:18,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 04:32:18,791 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 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 [2024-11-09 04:32:18,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:32:18,854 INFO L225 Difference]: With dead ends: 2070 [2024-11-09 04:32:18,856 INFO L226 Difference]: Without dead ends: 1211 [2024-11-09 04:32:18,870 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-09 04:32:18,878 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 100 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:32:18,879 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 117 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 04:32:18,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2024-11-09 04:32:19,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 1024. [2024-11-09 04:32:19,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1024 states, 1008 states have (on average 2.8422619047619047) internal successors, (2865), 1023 states have internal predecessors, (2865), 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) [2024-11-09 04:32:19,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 2865 transitions. [2024-11-09 04:32:19,110 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 2865 transitions. Word has length 9 [2024-11-09 04:32:19,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:32:19,110 INFO L471 AbstractCegarLoop]: Abstraction has 1024 states and 2865 transitions. [2024-11-09 04:32:19,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2024-11-09 04:32:19,111 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 2865 transitions. [2024-11-09 04:32:19,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-09 04:32:19,112 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:32:19,112 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:32:19,139 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-11-09 04:32:19,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:32:19,320 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-09 04:32:19,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:32:19,322 INFO L85 PathProgramCache]: Analyzing trace with hash 86542318, now seen corresponding path program 1 times [2024-11-09 04:32:19,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:32:19,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [216514096] [2024-11-09 04:32:19,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:32:19,332 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:32:19,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:32:19,341 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 04:32:19,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-11-09 04:32:19,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:32:19,789 INFO L255 TraceCheckSpWp]: Trace formula consists of 858 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 04:32:19,790 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:32:19,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:32:19,872 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:32:19,872 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:32:19,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [216514096] [2024-11-09 04:32:19,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [216514096] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:32:19,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:32:19,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 04:32:19,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837697140] [2024-11-09 04:32:19,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:32:19,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 04:32:19,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:32:19,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 04:32:19,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:32:19,876 INFO L87 Difference]: Start difference. First operand 1024 states and 2865 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) [2024-11-09 04:32:20,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:32:20,228 INFO L93 Difference]: Finished difference Result 1024 states and 2865 transitions. [2024-11-09 04:32:20,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 04:32:20,229 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 [2024-11-09 04:32:20,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:32:20,238 INFO L225 Difference]: With dead ends: 1024 [2024-11-09 04:32:20,238 INFO L226 Difference]: Without dead ends: 984 [2024-11-09 04:32:20,239 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 04:32:20,240 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 73 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 04:32:20,241 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 43 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 04:32:20,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2024-11-09 04:32:20,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 984. [2024-11-09 04:32:20,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 972 states have (on average 2.7983539094650207) internal successors, (2720), 983 states have internal predecessors, (2720), 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) [2024-11-09 04:32:20,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 2720 transitions. [2024-11-09 04:32:20,281 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 2720 transitions. Word has length 9 [2024-11-09 04:32:20,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:32:20,282 INFO L471 AbstractCegarLoop]: Abstraction has 984 states and 2720 transitions. [2024-11-09 04:32:20,282 INFO L472 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) [2024-11-09 04:32:20,282 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 2720 transitions. [2024-11-09 04:32:20,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-09 04:32:20,284 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:32:20,284 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:32:20,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2024-11-09 04:32:20,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:32:20,486 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-09 04:32:20,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:32:20,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1752290346, now seen corresponding path program 1 times [2024-11-09 04:32:20,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:32:20,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [111445479] [2024-11-09 04:32:20,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:32:20,488 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:32:20,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:32:20,491 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 04:32:20,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-11-09 04:32:20,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:32:20,859 INFO L255 TraceCheckSpWp]: Trace formula consists of 868 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 04:32:20,860 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:32:20,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:32:20,887 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:32:20,888 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:32:20,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [111445479] [2024-11-09 04:32:20,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [111445479] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:32:20,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:32:20,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 04:32:20,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009767330] [2024-11-09 04:32:20,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:32:20,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 04:32:20,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:32:20,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 04:32:20,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:32:20,891 INFO L87 Difference]: Start difference. First operand 984 states and 2720 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) [2024-11-09 04:32:21,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:32:21,202 INFO L93 Difference]: Finished difference Result 2094 states and 5807 transitions. [2024-11-09 04:32:21,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 04:32:21,203 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 [2024-11-09 04:32:21,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:32:21,212 INFO L225 Difference]: With dead ends: 2094 [2024-11-09 04:32:21,212 INFO L226 Difference]: Without dead ends: 1209 [2024-11-09 04:32:21,214 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:32:21,215 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 30 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 04:32:21,216 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 38 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 04:32:21,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1209 states. [2024-11-09 04:32:21,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1209 to 1136. [2024-11-09 04:32:21,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 1124 states have (on average 2.7793594306049823) internal successors, (3124), 1135 states have internal predecessors, (3124), 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) [2024-11-09 04:32:21,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 3124 transitions. [2024-11-09 04:32:21,259 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 3124 transitions. Word has length 12 [2024-11-09 04:32:21,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:32:21,260 INFO L471 AbstractCegarLoop]: Abstraction has 1136 states and 3124 transitions. [2024-11-09 04:32:21,260 INFO L472 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) [2024-11-09 04:32:21,260 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 3124 transitions. [2024-11-09 04:32:21,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-09 04:32:21,261 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:32:21,261 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:32:21,270 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-11-09 04:32:21,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:32:21,466 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-09 04:32:21,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:32:21,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1333886796, now seen corresponding path program 1 times [2024-11-09 04:32:21,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:32:21,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [745225823] [2024-11-09 04:32:21,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:32:21,468 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:32:21,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:32:21,471 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 04:32:21,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-11-09 04:32:21,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:32:21,814 INFO L255 TraceCheckSpWp]: Trace formula consists of 870 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 04:32:21,815 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:32:21,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:32:21,838 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:32:21,838 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:32:21,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [745225823] [2024-11-09 04:32:21,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [745225823] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:32:21,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:32:21,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 04:32:21,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952651200] [2024-11-09 04:32:21,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:32:21,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 04:32:21,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:32:21,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 04:32:21,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:32:21,841 INFO L87 Difference]: Start difference. First operand 1136 states and 3124 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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) [2024-11-09 04:32:22,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:32:22,244 INFO L93 Difference]: Finished difference Result 1921 states and 5254 transitions. [2024-11-09 04:32:22,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 04:32:22,245 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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 [2024-11-09 04:32:22,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:32:22,258 INFO L225 Difference]: With dead ends: 1921 [2024-11-09 04:32:22,258 INFO L226 Difference]: Without dead ends: 1747 [2024-11-09 04:32:22,259 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 04:32:22,261 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 65 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 04:32:22,261 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 94 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 04:32:22,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1747 states. [2024-11-09 04:32:22,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1747 to 1232. [2024-11-09 04:32:22,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1232 states, 1220 states have (on average 2.7745901639344264) internal successors, (3385), 1231 states have internal predecessors, (3385), 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) [2024-11-09 04:32:22,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1232 states to 1232 states and 3385 transitions. [2024-11-09 04:32:22,310 INFO L78 Accepts]: Start accepts. Automaton has 1232 states and 3385 transitions. Word has length 13 [2024-11-09 04:32:22,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:32:22,311 INFO L471 AbstractCegarLoop]: Abstraction has 1232 states and 3385 transitions. [2024-11-09 04:32:22,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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) [2024-11-09 04:32:22,311 INFO L276 IsEmpty]: Start isEmpty. Operand 1232 states and 3385 transitions. [2024-11-09 04:32:22,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-09 04:32:22,312 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:32:22,312 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:32:22,320 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-11-09 04:32:22,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:32:22,514 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-09 04:32:22,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:32:22,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1510342030, now seen corresponding path program 1 times [2024-11-09 04:32:22,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:32:22,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1644253187] [2024-11-09 04:32:22,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:32:22,517 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:32:22,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:32:22,522 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 04:32:22,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-11-09 04:32:22,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:32:22,871 INFO L255 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 04:32:22,872 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:32:22,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:32:22,886 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:32:22,886 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:32:22,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1644253187] [2024-11-09 04:32:22,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1644253187] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:32:22,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:32:22,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 04:32:22,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260123978] [2024-11-09 04:32:22,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:32:22,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 04:32:22,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:32:22,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 04:32:22,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:32:22,892 INFO L87 Difference]: Start difference. First operand 1232 states and 3385 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 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) [2024-11-09 04:32:23,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:32:23,157 INFO L93 Difference]: Finished difference Result 1442 states and 3912 transitions. [2024-11-09 04:32:23,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 04:32:23,158 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 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 [2024-11-09 04:32:23,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:32:23,167 INFO L225 Difference]: With dead ends: 1442 [2024-11-09 04:32:23,168 INFO L226 Difference]: Without dead ends: 1385 [2024-11-09 04:32:23,169 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:32:23,169 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 35 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 04:32:23,170 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 40 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 04:32:23,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1385 states. [2024-11-09 04:32:23,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1385 to 1223. [2024-11-09 04:32:23,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1223 states, 1211 states have (on average 2.745664739884393) internal successors, (3325), 1222 states have internal predecessors, (3325), 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) [2024-11-09 04:32:23,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 3325 transitions. [2024-11-09 04:32:23,213 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 3325 transitions. Word has length 15 [2024-11-09 04:32:23,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:32:23,214 INFO L471 AbstractCegarLoop]: Abstraction has 1223 states and 3325 transitions. [2024-11-09 04:32:23,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 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) [2024-11-09 04:32:23,214 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 3325 transitions. [2024-11-09 04:32:23,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-09 04:32:23,215 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:32:23,216 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:32:23,223 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-11-09 04:32:23,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:32:23,417 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-09 04:32:23,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:32:23,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1401922611, now seen corresponding path program 1 times [2024-11-09 04:32:23,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:32:23,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [346046498] [2024-11-09 04:32:23,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:32:23,419 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:32:23,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:32:23,422 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 04:32:23,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-11-09 04:32:23,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:32:23,766 INFO L255 TraceCheckSpWp]: Trace formula consists of 892 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 04:32:23,767 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:32:24,141 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:32:24,141 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:32:24,550 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:32:24,550 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:32:24,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [346046498] [2024-11-09 04:32:24,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [346046498] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:32:24,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2022205724] [2024-11-09 04:32:24,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:32:24,551 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 04:32:24,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 04:32:24,554 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 04:32:24,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2024-11-09 04:32:32,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:32:32,538 INFO L255 TraceCheckSpWp]: Trace formula consists of 892 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 04:32:32,540 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:32:32,889 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:32:32,890 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:32:33,144 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:32:33,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2022205724] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:32:33,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165874793] [2024-11-09 04:32:33,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:32:33,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:32:33,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:32:33,146 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:32:33,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b7448cb-22ca-4620-a82c-73ee762c2c7b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 04:32:34,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:32:34,870 INFO L255 TraceCheckSpWp]: Trace formula consists of 892 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 04:32:34,872 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:32:35,489 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:32:35,492 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:32:35,986 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:32:35,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165874793] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:32:35,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 04:32:35,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 8 [2024-11-09 04:32:35,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320798219] [2024-11-09 04:32:35,987 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 04:32:35,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 04:32:35,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:32:35,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 04:32:35,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-09 04:32:35,988 INFO L87 Difference]: Start difference. First operand 1223 states and 3325 transitions. Second operand has 10 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 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)