./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-ext/26_stack_cas_longer-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4fc63b2a 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_a631dc99-0e62-41f0-914c-db0c7d5c79e9/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a631dc99-0e62-41f0-914c-db0c7d5c79e9/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a631dc99-0e62-41f0-914c-db0c7d5c79e9/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a631dc99-0e62-41f0-914c-db0c7d5c79e9/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-ext/26_stack_cas_longer-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a631dc99-0e62-41f0-914c-db0c7d5c79e9/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a631dc99-0e62-41f0-914c-db0c7d5c79e9/bin/utaipan-verify-DbMuA5NWw2 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f66a662852389d8ac1f64241746e843d67de7f5d7507051fb5c8e68404b785cd --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:28:49,892 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:28:49,988 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a631dc99-0e62-41f0-914c-db0c7d5c79e9/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Overflow-32bit-Taipan_Default.epf [2024-11-02 12:28:49,996 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:28:49,997 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:28:50,039 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:28:50,040 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:28:50,040 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:28:50,041 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:28:50,042 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:28:50,042 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:28:50,043 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:28:50,043 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:28:50,046 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:28:50,046 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:28:50,047 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:28:50,047 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:28:50,047 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:28:50,048 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:28:50,048 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:28:50,049 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:28:50,049 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:28:50,050 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:28:50,051 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:28:50,051 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:28:50,052 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:28:50,052 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:28:50,052 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:28:50,053 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:28:50,053 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:28:50,054 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:28:50,054 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:28:50,055 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-02 12:28:50,055 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-02 12:28:50,055 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:28:50,056 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:28:50,056 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:28:50,057 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:28:50,057 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:28:50,057 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:28:50,058 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:28:50,059 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:28:50,059 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:28:50,059 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:28:50,059 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:28:50,060 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:28:50,060 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:28:50,060 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:28:50,060 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:28:50,061 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_a631dc99-0e62-41f0-914c-db0c7d5c79e9/bin/utaipan-verify-DbMuA5NWw2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a631dc99-0e62-41f0-914c-db0c7d5c79e9/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f66a662852389d8ac1f64241746e843d67de7f5d7507051fb5c8e68404b785cd [2024-11-02 12:28:50,363 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:28:50,386 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:28:50,390 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:28:50,391 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:28:50,392 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:28:50,393 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a631dc99-0e62-41f0-914c-db0c7d5c79e9/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/pthread-ext/26_stack_cas_longer-1.i Unable to find full path for "g++" [2024-11-02 12:28:52,679 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:28:53,021 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:28:53,021 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a631dc99-0e62-41f0-914c-db0c7d5c79e9/sv-benchmarks/c/pthread-ext/26_stack_cas_longer-1.i [2024-11-02 12:28:53,043 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a631dc99-0e62-41f0-914c-db0c7d5c79e9/bin/utaipan-verify-DbMuA5NWw2/data/3e74032fc/41221e5ec6de43dda0860d7fe0b57cd9/FLAGea76bfc23 [2024-11-02 12:28:53,074 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a631dc99-0e62-41f0-914c-db0c7d5c79e9/bin/utaipan-verify-DbMuA5NWw2/data/3e74032fc/41221e5ec6de43dda0860d7fe0b57cd9 [2024-11-02 12:28:53,076 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:28:53,078 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:28:53,079 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:28:53,080 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:28:53,085 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:28:53,085 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:28:53" (1/1) ... [2024-11-02 12:28:53,087 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11d6605 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:28:53, skipping insertion in model container [2024-11-02 12:28:53,087 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:28:53" (1/1) ... [2024-11-02 12:28:53,148 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:28:53,632 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:28:53,698 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:28:53,763 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:28:53,818 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:28:53,819 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:28:53 WrapperNode [2024-11-02 12:28:53,819 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:28:53,820 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:28:53,820 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:28:53,821 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:28:53,829 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:28:53" (1/1) ... [2024-11-02 12:28:53,857 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:28:53" (1/1) ... [2024-11-02 12:28:53,934 INFO L138 Inliner]: procedures = 179, calls = 47, calls flagged for inlining = 17, calls inlined = 20, statements flattened = 840 [2024-11-02 12:28:53,935 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:28:53,935 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:28:53,936 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:28:53,936 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:28:53,951 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:28:53" (1/1) ... [2024-11-02 12:28:53,951 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:28:53" (1/1) ... [2024-11-02 12:28:53,956 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:28:53" (1/1) ... [2024-11-02 12:28:53,956 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:28:53" (1/1) ... [2024-11-02 12:28:53,972 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:28:53" (1/1) ... [2024-11-02 12:28:53,980 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:28:53" (1/1) ... [2024-11-02 12:28:53,987 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:28:53" (1/1) ... [2024-11-02 12:28:53,994 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:28:53" (1/1) ... [2024-11-02 12:28:54,003 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:28:54,008 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:28:54,008 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:28:54,008 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:28:54,009 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:28:53" (1/1) ... [2024-11-02 12:28:54,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:28:54,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a631dc99-0e62-41f0-914c-db0c7d5c79e9/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:28:54,061 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a631dc99-0e62-41f0-914c-db0c7d5c79e9/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:28:54,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a631dc99-0e62-41f0-914c-db0c7d5c79e9/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:28:54,139 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-02 12:28:54,140 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-02 12:28:54,140 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-02 12:28:54,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-02 12:28:54,140 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-02 12:28:54,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:28:54,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-02 12:28:54,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-02 12:28:54,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:28:54,143 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-02 12:28:54,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:28:54,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:28:54,145 WARN L207 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-02 12:28:54,386 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:28:54,393 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:28:55,746 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-02 12:28:55,746 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:29:12,790 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:29:12,791 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-02 12:29:12,791 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:29:12 BoogieIcfgContainer [2024-11-02 12:29:12,791 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:29:12,793 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:29:12,793 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:29:12,797 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:29:12,797 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:28:53" (1/3) ... [2024-11-02 12:29:12,798 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b65f087 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:29:12, skipping insertion in model container [2024-11-02 12:29:12,798 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:28:53" (2/3) ... [2024-11-02 12:29:12,799 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b65f087 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:29:12, skipping insertion in model container [2024-11-02 12:29:12,799 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:29:12" (3/3) ... [2024-11-02 12:29:12,800 INFO L112 eAbstractionObserver]: Analyzing ICFG 26_stack_cas_longer-1.i [2024-11-02 12:29:12,821 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:29:12,822 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-11-02 12:29:12,822 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-02 12:29:13,048 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-02 12:29:13,081 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 51 places, 54 transitions, 112 flow [2024-11-02 12:29:13,138 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 216 states, 195 states have (on average 2.1025641025641026) internal successors, (410), 215 states have internal predecessors, (410), 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) [2024-11-02 12:29:13,174 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:29:13,183 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=LoopHeads, 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;@40481464, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:29:13,184 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-11-02 12:29:13,186 INFO L276 IsEmpty]: Start isEmpty. Operand has 216 states, 195 states have (on average 2.1025641025641026) internal successors, (410), 215 states have internal predecessors, (410), 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) [2024-11-02 12:29:13,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-02 12:29:13,195 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:29:13,196 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2024-11-02 12:29:13,197 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-02 12:29:13,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:29:13,203 INFO L85 PathProgramCache]: Analyzing trace with hash 717717233, now seen corresponding path program 1 times [2024-11-02 12:29:13,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:29:13,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395622179] [2024-11-02 12:29:13,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:29:13,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms