./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-lit/sssc12_variant-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 30e01a73 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_76bb07a3-8350-4b1f-9bea-71e7c9e98ae7/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76bb07a3-8350-4b1f-9bea-71e7c9e98ae7/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76bb07a3-8350-4b1f-9bea-71e7c9e98ae7/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76bb07a3-8350-4b1f-9bea-71e7c9e98ae7/bin/utaipan-verify-mE87zJ7Ire/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-lit/sssc12_variant-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76bb07a3-8350-4b1f-9bea-71e7c9e98ae7/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76bb07a3-8350-4b1f-9bea-71e7c9e98ae7/bin/utaipan-verify-mE87zJ7Ire --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 7be74b3f1207f4387a275e1f4e0e57734d5f1b215282bd8d49efde8c6948d207 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:32:57,646 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:32:57,798 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76bb07a3-8350-4b1f-9bea-71e7c9e98ae7/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-23 20:32:57,811 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:32:57,812 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:32:57,860 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:32:57,861 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:32:57,862 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:32:57,863 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:32:57,869 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:32:57,870 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:32:57,871 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:32:57,872 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:32:57,874 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 20:32:57,874 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:32:57,875 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:32:57,875 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 20:32:57,876 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 20:32:57,877 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:32:57,877 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 20:32:57,878 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 20:32:57,879 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 20:32:57,879 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 20:32:57,895 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 20:32:57,896 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:32:57,897 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 20:32:57,897 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:32:57,898 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 20:32:57,898 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:32:57,899 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-23 20:32:57,900 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-23 20:32:57,901 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-23 20:32:57,901 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:32:57,901 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 20:32:57,902 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 20:32:57,902 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 20:32:57,902 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:32:57,903 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:32:57,903 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 20:32:57,903 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:32:57,904 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:32:57,904 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:32:57,905 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:32:57,905 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 20:32:57,906 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:32:57,906 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:32:57,906 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:32:57,906 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:32:57,907 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_76bb07a3-8350-4b1f-9bea-71e7c9e98ae7/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76bb07a3-8350-4b1f-9bea-71e7c9e98ae7/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7be74b3f1207f4387a275e1f4e0e57734d5f1b215282bd8d49efde8c6948d207 [2023-11-23 20:32:58,223 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:32:58,256 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:32:58,259 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:32:58,261 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:32:58,261 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:32:58,263 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76bb07a3-8350-4b1f-9bea-71e7c9e98ae7/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/pthread-lit/sssc12_variant-2.i [2023-11-23 20:33:01,741 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:33:02,217 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:33:02,218 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76bb07a3-8350-4b1f-9bea-71e7c9e98ae7/sv-benchmarks/c/pthread-lit/sssc12_variant-2.i [2023-11-23 20:33:02,238 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76bb07a3-8350-4b1f-9bea-71e7c9e98ae7/bin/utaipan-verify-mE87zJ7Ire/data/92083349b/009459f4db1e4ccaa9039d702b96bd52/FLAGd5f6769ea [2023-11-23 20:33:02,255 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76bb07a3-8350-4b1f-9bea-71e7c9e98ae7/bin/utaipan-verify-mE87zJ7Ire/data/92083349b/009459f4db1e4ccaa9039d702b96bd52 [2023-11-23 20:33:02,258 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:33:02,260 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:33:02,262 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:33:02,263 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:33:02,269 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:33:02,270 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:33:02" (1/1) ... [2023-11-23 20:33:02,272 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c5c64a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:02, skipping insertion in model container [2023-11-23 20:33:02,272 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:33:02" (1/1) ... [2023-11-23 20:33:02,364 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:33:03,060 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:33:03,076 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:33:03,158 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:33:03,250 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:33:03,250 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:33:03,261 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:33:03,262 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:03 WrapperNode [2023-11-23 20:33:03,263 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:33:03,265 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:33:03,265 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:33:03,266 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:33:03,276 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:03" (1/1) ... [2023-11-23 20:33:03,313 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:03" (1/1) ... [2023-11-23 20:33:03,348 INFO L138 Inliner]: procedures = 275, calls = 26, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 89 [2023-11-23 20:33:03,348 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:33:03,349 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:33:03,350 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:33:03,350 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:33:03,366 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:03" (1/1) ... [2023-11-23 20:33:03,367 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:03" (1/1) ... [2023-11-23 20:33:03,371 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:03" (1/1) ... [2023-11-23 20:33:03,372 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:03" (1/1) ... [2023-11-23 20:33:03,383 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:03" (1/1) ... [2023-11-23 20:33:03,388 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:03" (1/1) ... [2023-11-23 20:33:03,391 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:03" (1/1) ... [2023-11-23 20:33:03,393 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:03" (1/1) ... [2023-11-23 20:33:03,397 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:33:03,399 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:33:03,399 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:33:03,399 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:33:03,400 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:03" (1/1) ... [2023-11-23 20:33:03,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:33:03,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76bb07a3-8350-4b1f-9bea-71e7c9e98ae7/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:33:03,454 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76bb07a3-8350-4b1f-9bea-71e7c9e98ae7/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 20:33:03,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76bb07a3-8350-4b1f-9bea-71e7c9e98ae7/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 20:33:03,536 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-23 20:33:03,537 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2023-11-23 20:33:03,537 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2023-11-23 20:33:03,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:33:03,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:33:03,540 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-23 20:33:03,541 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 20:33:03,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 20:33:03,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 20:33:03,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:33:03,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:33:03,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:33:03,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:33:03,545 WARN L213 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-23 20:33:03,811 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:33:03,816 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:33:04,148 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:33:04,441 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:33:04,442 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-23 20:33:04,443 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:33:04 BoogieIcfgContainer [2023-11-23 20:33:04,443 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:33:04,448 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 20:33:04,448 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 20:33:04,454 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 20:33:04,454 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:33:02" (1/3) ... [2023-11-23 20:33:04,457 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b4cabf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:33:04, skipping insertion in model container [2023-11-23 20:33:04,457 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:03" (2/3) ... [2023-11-23 20:33:04,460 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b4cabf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:33:04, skipping insertion in model container [2023-11-23 20:33:04,460 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:33:04" (3/3) ... [2023-11-23 20:33:04,462 INFO L112 eAbstractionObserver]: Analyzing ICFG sssc12_variant-2.i [2023-11-23 20:33:04,509 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 20:33:04,510 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-11-23 20:33:04,510 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-23 20:33:04,584 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-23 20:33:04,619 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 35 places, 35 transitions, 74 flow [2023-11-23 20:33:04,675 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 227 states, 185 states have (on average 2.4) internal successors, (444), 226 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:33:04,705 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 20:33:04,720 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@3a402ad8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 20:33:04,720 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-11-23 20:33:04,729 INFO L276 IsEmpty]: Start isEmpty. Operand has 227 states, 185 states have (on average 2.4) internal successors, (444), 226 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:33:04,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-23 20:33:04,737 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:33:04,738 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-23 20:33:04,739 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 15 more)] === [2023-11-23 20:33:04,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:33:04,756 INFO L85 PathProgramCache]: Analyzing trace with hash 303876, now seen corresponding path program 1 times [2023-11-23 20:33:04,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:33:04,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870946538] [2023-11-23 20:33:04,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:33:04,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:33:04,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:33:05,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:33:05,293 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:33:05,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870946538] [2023-11-23 20:33:05,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870946538] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:33:05,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:33:05,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 20:33:05,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701080960] [2023-11-23 20:33:05,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:33:05,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:33:05,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:33:05,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:33:05,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:33:05,345 INFO L87 Difference]: Start difference. First operand has 227 states, 185 states have (on average 2.4) internal successors, (444), 226 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:33:05,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:33:05,415 INFO L93 Difference]: Finished difference Result 131 states and 236 transitions. [2023-11-23 20:33:05,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:33:05,419 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2023-11-23 20:33:05,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:33:05,432 INFO L225 Difference]: With dead ends: 131 [2023-11-23 20:33:05,432 INFO L226 Difference]: Without dead ends: 131 [2023-11-23 20:33:05,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:33:05,439 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 26 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 20:33:05,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 9 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 20:33:05,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-11-23 20:33:05,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2023-11-23 20:33:05,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 114 states have (on average 2.0701754385964914) internal successors, (236), 130 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:33:05,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 236 transitions. [2023-11-23 20:33:05,502 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 236 transitions. Word has length 3 [2023-11-23 20:33:05,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:33:05,503 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 236 transitions. [2023-11-23 20:33:05,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:33:05,504 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 236 transitions. [2023-11-23 20:33:05,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-23 20:33:05,504 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:33:05,504 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-23 20:33:05,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 20:33:05,505 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 15 more)] === [2023-11-23 20:33:05,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:33:05,506 INFO L85 PathProgramCache]: Analyzing trace with hash 303877, now seen corresponding path program 1 times [2023-11-23 20:33:05,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:33:05,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95061314] [2023-11-23 20:33:05,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:33:05,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:33:05,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:33:05,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:33:05,708 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:33:05,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95061314] [2023-11-23 20:33:05,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95061314] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:33:05,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:33:05,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 20:33:05,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063875542] [2023-11-23 20:33:05,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:33:05,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:33:05,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:33:05,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:33:05,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:33:05,713 INFO L87 Difference]: Start difference. First operand 131 states and 236 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:33:05,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:33:05,768 INFO L93 Difference]: Finished difference Result 109 states and 193 transitions. [2023-11-23 20:33:05,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:33:05,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2023-11-23 20:33:05,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:33:05,772 INFO L225 Difference]: With dead ends: 109 [2023-11-23 20:33:05,773 INFO L226 Difference]: Without dead ends: 109 [2023-11-23 20:33:05,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:33:05,777 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 25 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 20:33:05,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 9 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 20:33:05,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2023-11-23 20:33:05,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2023-11-23 20:33:05,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 101 states have (on average 1.9108910891089108) internal successors, (193), 108 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:33:05,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 193 transitions. [2023-11-23 20:33:05,792 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 193 transitions. Word has length 3 [2023-11-23 20:33:05,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:33:05,792 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 193 transitions. [2023-11-23 20:33:05,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:33:05,793 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 193 transitions. [2023-11-23 20:33:05,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-23 20:33:05,793 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:33:05,794 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2023-11-23 20:33:05,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 20:33:05,794 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 15 more)] === [2023-11-23 20:33:05,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:33:05,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1631115115, now seen corresponding path program 1 times [2023-11-23 20:33:05,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:33:05,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923930640] [2023-11-23 20:33:05,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:33:05,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:33:05,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:33:05,821 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:33:05,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:33:05,863 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-23 20:33:05,863 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 20:33:05,865 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2023-11-23 20:33:05,867 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 18 remaining) [2023-11-23 20:33:05,868 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 18 remaining) [2023-11-23 20:33:05,868 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (14 of 18 remaining) [2023-11-23 20:33:05,868 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 18 remaining) [2023-11-23 20:33:05,869 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 18 remaining) [2023-11-23 20:33:05,869 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 18 remaining) [2023-11-23 20:33:05,869 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 18 remaining) [2023-11-23 20:33:05,870 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 18 remaining) [2023-11-23 20:33:05,870 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 18 remaining) [2023-11-23 20:33:05,871 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr6ASSERT_VIOLATIONMEMORY_LEAK (7 of 18 remaining) [2023-11-23 20:33:05,871 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 18 remaining) [2023-11-23 20:33:05,871 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 18 remaining) [2023-11-23 20:33:05,872 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 18 remaining) [2023-11-23 20:33:05,872 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 18 remaining) [2023-11-23 20:33:05,872 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 18 remaining) [2023-11-23 20:33:05,873 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 18 remaining) [2023-11-23 20:33:05,873 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr6ASSERT_VIOLATIONMEMORY_LEAK (0 of 18 remaining) [2023-11-23 20:33:05,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 20:33:05,878 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-23 20:33:05,880 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-23 20:33:05,881 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-23 20:33:05,922 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-23 20:33:05,928 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 59 places, 60 transitions, 130 flow [2023-11-23 20:33:06,244 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 5044 states, 4691 states have (on average 3.2685994457471756) internal successors, (15333), 5043 states have internal predecessors, (15333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:33:06,250 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 20:33:06,253 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@3a402ad8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 20:33:06,254 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-11-23 20:33:06,274 INFO L276 IsEmpty]: Start isEmpty. Operand has 5044 states, 4691 states have (on average 3.2685994457471756) internal successors, (15333), 5043 states have internal predecessors, (15333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:33:06,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-23 20:33:06,280 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:33:06,280 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-23 20:33:06,282 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 22 more)] === [2023-11-23 20:33:06,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:33:06,283 INFO L85 PathProgramCache]: Analyzing trace with hash 363456, now seen corresponding path program 1 times [2023-11-23 20:33:06,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:33:06,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965723973] [2023-11-23 20:33:06,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:33:06,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:33:06,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:33:06,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:33:06,432 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:33:06,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965723973] [2023-11-23 20:33:06,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965723973] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:33:06,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:33:06,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 20:33:06,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757155837] [2023-11-23 20:33:06,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:33:06,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:33:06,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:33:06,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:33:06,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:33:06,468 INFO L87 Difference]: Start difference. First operand has 5044 states, 4691 states have (on average 3.2685994457471756) internal successors, (15333), 5043 states have internal predecessors, (15333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:33:06,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:33:06,631 INFO L93 Difference]: Finished difference Result 2756 states and 7712 transitions. [2023-11-23 20:33:06,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:33:06,633 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2023-11-23 20:33:06,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:33:06,678 INFO L225 Difference]: With dead ends: 2756 [2023-11-23 20:33:06,678 INFO L226 Difference]: Without dead ends: 2756 [2023-11-23 20:33:06,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:33:06,680 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 48 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:33:06,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 17 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:33:06,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2756 states. [2023-11-23 20:33:06,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2756 to 2756. [2023-11-23 20:33:06,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2756 states, 2619 states have (on average 2.944635357006491) internal successors, (7712), 2755 states have internal predecessors, (7712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:33:06,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2756 states to 2756 states and 7712 transitions. [2023-11-23 20:33:06,842 INFO L78 Accepts]: Start accepts. Automaton has 2756 states and 7712 transitions. Word has length 3 [2023-11-23 20:33:06,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:33:06,843 INFO L495 AbstractCegarLoop]: Abstraction has 2756 states and 7712 transitions. [2023-11-23 20:33:06,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:33:06,843 INFO L276 IsEmpty]: Start isEmpty. Operand 2756 states and 7712 transitions. [2023-11-23 20:33:06,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-23 20:33:06,844 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:33:06,844 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-23 20:33:06,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 20:33:06,844 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 22 more)] === [2023-11-23 20:33:06,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:33:06,845 INFO L85 PathProgramCache]: Analyzing trace with hash 363457, now seen corresponding path program 1 times [2023-11-23 20:33:06,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:33:06,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412832179] [2023-11-23 20:33:06,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:33:06,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:33:06,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:33:06,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:33:06,941 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:33:06,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412832179] [2023-11-23 20:33:06,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412832179] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:33:06,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:33:06,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 20:33:06,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482823436] [2023-11-23 20:33:06,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:33:06,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:33:06,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:33:06,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:33:06,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:33:06,947 INFO L87 Difference]: Start difference. First operand 2756 states and 7712 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:33:07,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:33:07,119 INFO L93 Difference]: Finished difference Result 2293 states and 6346 transitions. [2023-11-23 20:33:07,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:33:07,120 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2023-11-23 20:33:07,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:33:07,149 INFO L225 Difference]: With dead ends: 2293 [2023-11-23 20:33:07,149 INFO L226 Difference]: Without dead ends: 2293 [2023-11-23 20:33:07,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:33:07,151 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 47 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:33:07,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 17 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:33:07,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2293 states. [2023-11-23 20:33:07,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2293 to 2293. [2023-11-23 20:33:07,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2293 states, 2229 states have (on average 2.8470165993719156) internal successors, (6346), 2292 states have internal predecessors, (6346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:33:07,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2293 states to 2293 states and 6346 transitions. [2023-11-23 20:33:07,285 INFO L78 Accepts]: Start accepts. Automaton has 2293 states and 6346 transitions. Word has length 3 [2023-11-23 20:33:07,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:33:07,286 INFO L495 AbstractCegarLoop]: Abstraction has 2293 states and 6346 transitions. [2023-11-23 20:33:07,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:33:07,286 INFO L276 IsEmpty]: Start isEmpty. Operand 2293 states and 6346 transitions. [2023-11-23 20:33:07,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-23 20:33:07,288 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:33:07,288 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:33:07,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 20:33:07,289 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 22 more)] === [2023-11-23 20:33:07,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:33:07,289 INFO L85 PathProgramCache]: Analyzing trace with hash -2037798677, now seen corresponding path program 1 times [2023-11-23 20:33:07,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:33:07,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214288635] [2023-11-23 20:33:07,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:33:07,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:33:07,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:33:07,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:33:07,435 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:33:07,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214288635] [2023-11-23 20:33:07,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214288635] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:33:07,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:33:07,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 20:33:07,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999049466] [2023-11-23 20:33:07,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:33:07,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:33:07,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:33:07,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:33:07,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:33:07,447 INFO L87 Difference]: Start difference. First operand 2293 states and 6346 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:33:07,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:33:07,571 INFO L93 Difference]: Finished difference Result 1696 states and 4684 transitions. [2023-11-23 20:33:07,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:33:07,572 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-23 20:33:07,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:33:07,591 INFO L225 Difference]: With dead ends: 1696 [2023-11-23 20:33:07,592 INFO L226 Difference]: Without dead ends: 1696 [2023-11-23 20:33:07,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:33:07,594 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 33 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:33:07,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 11 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:33:07,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1696 states. [2023-11-23 20:33:07,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1696 to 1696. [2023-11-23 20:33:07,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1696 states, 1671 states have (on average 2.803111909036505) internal successors, (4684), 1695 states have internal predecessors, (4684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:33:07,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1696 states to 1696 states and 4684 transitions. [2023-11-23 20:33:07,675 INFO L78 Accepts]: Start accepts. Automaton has 1696 states and 4684 transitions. Word has length 11 [2023-11-23 20:33:07,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:33:07,676 INFO L495 AbstractCegarLoop]: Abstraction has 1696 states and 4684 transitions. [2023-11-23 20:33:07,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:33:07,676 INFO L276 IsEmpty]: Start isEmpty. Operand 1696 states and 4684 transitions. [2023-11-23 20:33:07,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-23 20:33:07,678 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:33:07,678 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:33:07,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 20:33:07,679 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 22 more)] === [2023-11-23 20:33:07,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:33:07,680 INFO L85 PathProgramCache]: Analyzing trace with hash -2037798676, now seen corresponding path program 1 times [2023-11-23 20:33:07,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:33:07,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14352488] [2023-11-23 20:33:07,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:33:07,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:33:07,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:33:07,717 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:33:07,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:33:07,761 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-23 20:33:07,766 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 20:33:07,766 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 25 remaining) [2023-11-23 20:33:07,767 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 25 remaining) [2023-11-23 20:33:07,767 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 25 remaining) [2023-11-23 20:33:07,767 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (21 of 25 remaining) [2023-11-23 20:33:07,768 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 25 remaining) [2023-11-23 20:33:07,768 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 25 remaining) [2023-11-23 20:33:07,769 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 25 remaining) [2023-11-23 20:33:07,769 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 25 remaining) [2023-11-23 20:33:07,769 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 25 remaining) [2023-11-23 20:33:07,770 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 25 remaining) [2023-11-23 20:33:07,770 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 25 remaining) [2023-11-23 20:33:07,771 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr6ASSERT_VIOLATIONMEMORY_LEAK (13 of 25 remaining) [2023-11-23 20:33:07,771 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 25 remaining) [2023-11-23 20:33:07,771 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 25 remaining) [2023-11-23 20:33:07,771 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 25 remaining) [2023-11-23 20:33:07,772 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 25 remaining) [2023-11-23 20:33:07,772 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 25 remaining) [2023-11-23 20:33:07,773 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 25 remaining) [2023-11-23 20:33:07,773 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr6ASSERT_VIOLATIONMEMORY_LEAK (6 of 25 remaining) [2023-11-23 20:33:07,773 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 25 remaining) [2023-11-23 20:33:07,773 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 25 remaining) [2023-11-23 20:33:07,774 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 25 remaining) [2023-11-23 20:33:07,774 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 25 remaining) [2023-11-23 20:33:07,775 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 25 remaining) [2023-11-23 20:33:07,775 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr6ASSERT_VIOLATIONMEMORY_LEAK (0 of 25 remaining) [2023-11-23 20:33:07,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 20:33:07,776 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-23 20:33:07,783 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-11-23 20:33:07,783 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 20:33:07,835 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre6 could not be translated [2023-11-23 20:33:07,853 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 08:33:07 BasicIcfg [2023-11-23 20:33:07,853 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 20:33:07,854 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 20:33:07,854 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 20:33:07,854 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 20:33:07,855 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:33:04" (3/4) ... [2023-11-23 20:33:07,856 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-23 20:33:07,875 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre6 could not be translated [2023-11-23 20:33:07,923 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76bb07a3-8350-4b1f-9bea-71e7c9e98ae7/bin/utaipan-verify-mE87zJ7Ire/witness.graphml [2023-11-23 20:33:07,923 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 20:33:07,924 INFO L158 Benchmark]: Toolchain (without parser) took 5663.70ms. Allocated memory was 176.2MB in the beginning and 211.8MB in the end (delta: 35.7MB). Free memory was 145.1MB in the beginning and 67.7MB in the end (delta: 77.4MB). Peak memory consumption was 113.0MB. Max. memory is 16.1GB. [2023-11-23 20:33:07,925 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 134.2MB. Free memory is still 108.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:33:07,925 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1001.70ms. Allocated memory is still 176.2MB. Free memory was 144.5MB in the beginning and 116.1MB in the end (delta: 28.4MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-11-23 20:33:07,926 INFO L158 Benchmark]: Boogie Procedure Inliner took 83.53ms. Allocated memory is still 176.2MB. Free memory was 116.1MB in the beginning and 113.6MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:33:07,926 INFO L158 Benchmark]: Boogie Preprocessor took 48.06ms. Allocated memory is still 176.2MB. Free memory was 113.6MB in the beginning and 112.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:33:07,927 INFO L158 Benchmark]: RCFGBuilder took 1045.90ms. Allocated memory is still 176.2MB. Free memory was 112.0MB in the beginning and 83.7MB in the end (delta: 28.2MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2023-11-23 20:33:07,927 INFO L158 Benchmark]: TraceAbstraction took 3405.34ms. Allocated memory was 176.2MB in the beginning and 211.8MB in the end (delta: 35.7MB). Free memory was 83.2MB in the beginning and 73.0MB in the end (delta: 10.2MB). Peak memory consumption was 48.0MB. Max. memory is 16.1GB. [2023-11-23 20:33:07,928 INFO L158 Benchmark]: Witness Printer took 69.56ms. Allocated memory is still 211.8MB. Free memory was 71.9MB in the beginning and 67.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 20:33:07,931 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 134.2MB. Free memory is still 108.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1001.70ms. Allocated memory is still 176.2MB. Free memory was 144.5MB in the beginning and 116.1MB in the end (delta: 28.4MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 83.53ms. Allocated memory is still 176.2MB. Free memory was 116.1MB in the beginning and 113.6MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.06ms. Allocated memory is still 176.2MB. Free memory was 113.6MB in the beginning and 112.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1045.90ms. Allocated memory is still 176.2MB. Free memory was 112.0MB in the beginning and 83.7MB in the end (delta: 28.2MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * TraceAbstraction took 3405.34ms. Allocated memory was 176.2MB in the beginning and 211.8MB in the end (delta: 35.7MB). Free memory was 83.2MB in the beginning and 73.0MB in the end (delta: 10.2MB). Peak memory consumption was 48.0MB. Max. memory is 16.1GB. * Witness Printer took 69.56ms. Allocated memory is still 211.8MB. Free memory was 71.9MB in the beginning and 67.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre6 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre6 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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 - 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 - CounterExampleResult [Line: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L1005] 0 int *data; [L1006] 0 volatile int len; [L1007] 0 volatile int next; [L1008] 0 volatile int lock; [L1040] 0 pthread_t t; [L1041] 0 lock=0 [L1042] 0 next = 0 [L1043] 0 len = __VERIFIER_nondet_int() [L1044] CALL 0 assume_abort_if_not(len > 0) [L994] COND FALSE 0 !(!cond) [L1044] RET 0 assume_abort_if_not(len > 0) [L1045] 0 data = malloc(sizeof(int) * len) [L1046] COND TRUE 0 1 [L1047] FCALL, FORK 0 pthread_create(&t, 0, thr, 0) VAL [\old(argc)=1073741827, argc=1073741827, argv={1073741825:1073741826}, data={-2:0}, len=1073741824, lock=0, next=0, t={3:0}] [L1022] 1 int c, end; [L1023] 1 c = 0 [L1024] 1 end = 0 [L1025] CALL 1 acquire() [L1011] CALL 1 assume_abort_if_not(lock == 0) [L994] COND FALSE 1 !(!cond) [L1011] RET 1 assume_abort_if_not(lock == 0) [L1012] 1 lock = 1 VAL [data={-2:0}, len=1073741824, lock=1, next=0] [L1025] RET 1 acquire() [L1026] COND TRUE 1 next + 10 <= len [L1027] 1 c = next [L1028] EXPR 1 end = next + 10 [L1028] 1 next = end = next + 10 [L1030] CALL 1 release() [L1017] CALL 1 assume_abort_if_not(lock == 1) [L994] COND FALSE 1 !(!cond) [L1017] RET 1 assume_abort_if_not(lock == 1) [L1018] 1 lock = 0 VAL [data={-2:0}, len=1073741824, lock=0, next=10] [L1030] RET 1 release() [L1031] COND TRUE 1 c < end VAL [arg={0:0}, arg={0:0}, c=0, data={-2:0}, end=10, len=1073741824, lock=0, next=10] [L1032] 1 data[c] = 0 - 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: 1039]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1047]: 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: -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: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 991]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 55 locations, 18 error locations. Started 1 CEGAR loops. OverallTime: 1.3s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 51 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 51 mSDsluCounter, 18 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 37 IncrementalHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 18 mSDtfsCounter, 37 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=227occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 28 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 77 locations, 25 error locations. Started 1 CEGAR loops. OverallTime: 1.8s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 128 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 128 mSDsluCounter, 45 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 97 IncrementalHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 45 mSDtfsCounter, 97 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5044occurred in iteration=0, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 78 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-11-23 20:33:07,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76bb07a3-8350-4b1f-9bea-71e7c9e98ae7/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)