./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-81.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a902221-5f1d-4e11-9d52-f24d5e256e04/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a902221-5f1d-4e11-9d52-f24d5e256e04/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_7a902221-5f1d-4e11-9d52-f24d5e256e04/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a902221-5f1d-4e11-9d52-f24d5e256e04/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-81.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a902221-5f1d-4e11-9d52-f24d5e256e04/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a902221-5f1d-4e11-9d52-f24d5e256e04/bin/utaipan-verify-DbMuA5NWw2 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d402cd14beee6851ca97c58b2a2589220820214ac9c394c1c5bdac6dbc1a1025 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 11:24:00,493 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 11:24:00,565 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a902221-5f1d-4e11-9d52-f24d5e256e04/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-02 11:24:00,569 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 11:24:00,570 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 11:24:00,593 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 11:24:00,594 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 11:24:00,594 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 11:24:00,595 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 11:24:00,595 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 11:24:00,596 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 11:24:00,596 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 11:24:00,597 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 11:24:00,598 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 11:24:00,598 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 11:24:00,599 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 11:24:00,599 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 11:24:00,599 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 11:24:00,600 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 11:24:00,600 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 11:24:00,601 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 11:24:00,602 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 11:24:00,603 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 11:24:00,603 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 11:24:00,604 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 11:24:00,604 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 11:24:00,604 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 11:24:00,605 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 11:24:00,605 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 11:24:00,606 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 11:24:00,606 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 11:24:00,606 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 11:24:00,607 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 11:24:00,607 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 11:24:00,608 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 11:24:00,608 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 11:24:00,608 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 11:24:00,609 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 11:24:00,609 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 11:24:00,610 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 11:24:00,610 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 11:24:00,613 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 11:24:00,614 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 11:24:00,614 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 11:24:00,614 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 11:24:00,614 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 11:24:00,615 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 11:24:00,615 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_7a902221-5f1d-4e11-9d52-f24d5e256e04/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a902221-5f1d-4e11-9d52-f24d5e256e04/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d402cd14beee6851ca97c58b2a2589220820214ac9c394c1c5bdac6dbc1a1025 [2024-11-02 11:24:00,842 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 11:24:00,871 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 11:24:00,874 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 11:24:00,876 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 11:24:00,877 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 11:24:00,878 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a902221-5f1d-4e11-9d52-f24d5e256e04/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-81.i Unable to find full path for "g++" [2024-11-02 11:24:03,039 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 11:24:03,327 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 11:24:03,328 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a902221-5f1d-4e11-9d52-f24d5e256e04/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-81.i [2024-11-02 11:24:03,344 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a902221-5f1d-4e11-9d52-f24d5e256e04/bin/utaipan-verify-DbMuA5NWw2/data/0af029a64/a81e480b943f42898fd33db09fe12129/FLAG1fbe74e4f [2024-11-02 11:24:03,373 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a902221-5f1d-4e11-9d52-f24d5e256e04/bin/utaipan-verify-DbMuA5NWw2/data/0af029a64/a81e480b943f42898fd33db09fe12129 [2024-11-02 11:24:03,380 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 11:24:03,382 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 11:24:03,386 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 11:24:03,386 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 11:24:03,398 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 11:24:03,398 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:24:03" (1/1) ... [2024-11-02 11:24:03,402 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e6e7222 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:03, skipping insertion in model container [2024-11-02 11:24:03,402 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:24:03" (1/1) ... [2024-11-02 11:24:03,458 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 11:24:03,675 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a902221-5f1d-4e11-9d52-f24d5e256e04/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-81.i[919,932] [2024-11-02 11:24:03,787 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 11:24:03,808 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 11:24:03,833 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a902221-5f1d-4e11-9d52-f24d5e256e04/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-81.i[919,932] [2024-11-02 11:24:03,917 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 11:24:03,957 INFO L204 MainTranslator]: Completed translation [2024-11-02 11:24:03,957 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:03 WrapperNode [2024-11-02 11:24:03,958 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 11:24:03,959 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 11:24:03,959 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 11:24:03,960 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 11:24:03,969 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:03" (1/1) ... [2024-11-02 11:24:03,994 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:03" (1/1) ... [2024-11-02 11:24:04,082 INFO L138 Inliner]: procedures = 26, calls = 61, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 302 [2024-11-02 11:24:04,083 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 11:24:04,084 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 11:24:04,085 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 11:24:04,085 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 11:24:04,097 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:03" (1/1) ... [2024-11-02 11:24:04,098 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:03" (1/1) ... [2024-11-02 11:24:04,109 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:03" (1/1) ... [2024-11-02 11:24:04,109 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:03" (1/1) ... [2024-11-02 11:24:04,141 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:03" (1/1) ... [2024-11-02 11:24:04,152 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:03" (1/1) ... [2024-11-02 11:24:04,159 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:03" (1/1) ... [2024-11-02 11:24:04,162 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:03" (1/1) ... [2024-11-02 11:24:04,174 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 11:24:04,176 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 11:24:04,177 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 11:24:04,177 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 11:24:04,178 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:03" (1/1) ... [2024-11-02 11:24:04,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 11:24:04,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a902221-5f1d-4e11-9d52-f24d5e256e04/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 11:24:04,214 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a902221-5f1d-4e11-9d52-f24d5e256e04/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 11:24:04,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a902221-5f1d-4e11-9d52-f24d5e256e04/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 11:24:04,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 11:24:04,253 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-02 11:24:04,253 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-02 11:24:04,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 11:24:04,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 11:24:04,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 11:24:04,418 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 11:24:04,428 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 11:24:05,149 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-11-02 11:24:05,149 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 11:24:05,530 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 11:24:05,530 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-02 11:24:05,531 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:24:05 BoogieIcfgContainer [2024-11-02 11:24:05,531 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 11:24:05,533 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 11:24:05,533 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 11:24:05,537 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 11:24:05,537 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 11:24:03" (1/3) ... [2024-11-02 11:24:05,538 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@477b71ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:24:05, skipping insertion in model container [2024-11-02 11:24:05,538 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:03" (2/3) ... [2024-11-02 11:24:05,538 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@477b71ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:24:05, skipping insertion in model container [2024-11-02 11:24:05,539 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:24:05" (3/3) ... [2024-11-02 11:24:05,540 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-co_file-81.i [2024-11-02 11:24:05,559 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 11:24:05,560 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 11:24:05,635 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 11:24:05,645 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;@215c3e68, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 11:24:05,645 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 11:24:05,651 INFO L276 IsEmpty]: Start isEmpty. Operand has 83 states, 32 states have (on average 1.09375) internal successors, (35), 33 states have internal predecessors, (35), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-02 11:24:05,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-02 11:24:05,668 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:24:05,669 INFO L215 NwaCegarLoop]: trace histogram [48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:24:05,670 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 11:24:05,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:24:05,677 INFO L85 PathProgramCache]: Analyzing trace with hash 362898763, now seen corresponding path program 1 times [2024-11-02 11:24:05,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:24:05,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23679124] [2024-11-02 11:24:05,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:24:05,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:24:06,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:24:18,993 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 17 proven. 118 refuted. 0 times theorem prover too weak. 2121 trivial. 0 not checked. [2024-11-02 11:24:18,995 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:24:18,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23679124] [2024-11-02 11:24:18,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23679124] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 11:24:18,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828366224] [2024-11-02 11:24:18,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:24:18,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 11:24:18,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a902221-5f1d-4e11-9d52-f24d5e256e04/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 11:24:19,001 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a902221-5f1d-4e11-9d52-f24d5e256e04/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 11:24:19,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a902221-5f1d-4e11-9d52-f24d5e256e04/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-02 11:24:19,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:24:19,975 INFO L255 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-02 11:24:20,008 INFO L278 TraceCheckSpWp]: Computing forward predicates...