./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-81.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5572c475-cac3-4294-ab8c-c6a3707a7a12/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5572c475-cac3-4294-ab8c-c6a3707a7a12/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5572c475-cac3-4294-ab8c-c6a3707a7a12/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5572c475-cac3-4294-ab8c-c6a3707a7a12/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-81.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5572c475-cac3-4294-ab8c-c6a3707a7a12/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5572c475-cac3-4294-ab8c-c6a3707a7a12/bin/utaipan-verify-YMUCfTKeje --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 6b77a3b8187af54765a505f7649175cf18add0380d30145d0f26a5ac8cc02bbd --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 05:43:44,930 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 05:43:45,035 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5572c475-cac3-4294-ab8c-c6a3707a7a12/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 05:43:45,041 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 05:43:45,045 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 05:43:45,099 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 05:43:45,103 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 05:43:45,104 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 05:43:45,105 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 05:43:45,107 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 05:43:45,107 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 05:43:45,108 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 05:43:45,108 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 05:43:45,111 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 05:43:45,111 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 05:43:45,112 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 05:43:45,112 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 05:43:45,113 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 05:43:45,113 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 05:43:45,114 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 05:43:45,114 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 05:43:45,119 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 05:43:45,119 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 05:43:45,120 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 05:43:45,124 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 05:43:45,125 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 05:43:45,125 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 05:43:45,125 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 05:43:45,126 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 05:43:45,126 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 05:43:45,126 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 05:43:45,126 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 05:43:45,127 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 05:43:45,127 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 05:43:45,127 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 05:43:45,128 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 05:43:45,128 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 05:43:45,129 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 05:43:45,130 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:43:45,131 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 05:43:45,132 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 05:43:45,132 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 05:43:45,132 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 05:43:45,133 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 05:43:45,133 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 05:43:45,134 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 05:43:45,134 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 05:43:45,134 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_5572c475-cac3-4294-ab8c-c6a3707a7a12/bin/utaipan-verify-YMUCfTKeje/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5572c475-cac3-4294-ab8c-c6a3707a7a12/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b77a3b8187af54765a505f7649175cf18add0380d30145d0f26a5ac8cc02bbd [2024-11-09 05:43:45,454 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 05:43:45,489 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 05:43:45,493 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 05:43:45,496 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 05:43:45,496 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 05:43:45,498 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5572c475-cac3-4294-ab8c-c6a3707a7a12/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-81.i Unable to find full path for "g++" [2024-11-09 05:43:47,760 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 05:43:48,079 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 05:43:48,080 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5572c475-cac3-4294-ab8c-c6a3707a7a12/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-81.i [2024-11-09 05:43:48,092 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5572c475-cac3-4294-ab8c-c6a3707a7a12/bin/utaipan-verify-YMUCfTKeje/data/8718d388e/b00a1b8721de4597a2371573b0905460/FLAG18a40bb89 [2024-11-09 05:43:48,110 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5572c475-cac3-4294-ab8c-c6a3707a7a12/bin/utaipan-verify-YMUCfTKeje/data/8718d388e/b00a1b8721de4597a2371573b0905460 [2024-11-09 05:43:48,113 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 05:43:48,115 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 05:43:48,117 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 05:43:48,117 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 05:43:48,125 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 05:43:48,129 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:43:48" (1/1) ... [2024-11-09 05:43:48,130 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@99f4876 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:43:48, skipping insertion in model container [2024-11-09 05:43:48,130 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:43:48" (1/1) ... [2024-11-09 05:43:48,167 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 05:43:48,399 WARN L250 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_5572c475-cac3-4294-ab8c-c6a3707a7a12/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-81.i[919,932] [2024-11-09 05:43:48,513 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:43:48,536 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 05:43:48,552 WARN L250 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_5572c475-cac3-4294-ab8c-c6a3707a7a12/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-81.i[919,932] [2024-11-09 05:43:48,602 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:43:48,637 INFO L204 MainTranslator]: Completed translation [2024-11-09 05:43:48,638 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:43:48 WrapperNode [2024-11-09 05:43:48,638 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 05:43:48,639 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 05:43:48,639 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 05:43:48,639 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 05:43:48,646 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:43:48" (1/1) ... [2024-11-09 05:43:48,659 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:43:48" (1/1) ... [2024-11-09 05:43:48,728 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 249 [2024-11-09 05:43:48,729 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 05:43:48,733 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 05:43:48,733 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 05:43:48,733 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 05:43:48,748 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:43:48" (1/1) ... [2024-11-09 05:43:48,748 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:43:48" (1/1) ... [2024-11-09 05:43:48,756 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:43:48" (1/1) ... [2024-11-09 05:43:48,760 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:43:48" (1/1) ... [2024-11-09 05:43:48,793 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:43:48" (1/1) ... [2024-11-09 05:43:48,802 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:43:48" (1/1) ... [2024-11-09 05:43:48,809 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:43:48" (1/1) ... [2024-11-09 05:43:48,813 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:43:48" (1/1) ... [2024-11-09 05:43:48,828 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 05:43:48,830 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 05:43:48,831 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 05:43:48,831 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 05:43:48,832 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:43:48" (1/1) ... [2024-11-09 05:43:48,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:43:48,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5572c475-cac3-4294-ab8c-c6a3707a7a12/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:43:48,873 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5572c475-cac3-4294-ab8c-c6a3707a7a12/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 05:43:48,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5572c475-cac3-4294-ab8c-c6a3707a7a12/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 05:43:48,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 05:43:48,921 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-09 05:43:48,921 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-09 05:43:48,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 05:43:48,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 05:43:48,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 05:43:49,093 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 05:43:49,099 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 05:43:49,939 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-11-09 05:43:49,940 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 05:43:50,446 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 05:43:50,447 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-09 05:43:50,447 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:43:50 BoogieIcfgContainer [2024-11-09 05:43:50,448 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 05:43:50,452 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 05:43:50,452 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 05:43:50,456 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 05:43:50,457 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:43:48" (1/3) ... [2024-11-09 05:43:50,458 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d5b502f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:43:50, skipping insertion in model container [2024-11-09 05:43:50,459 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:43:48" (2/3) ... [2024-11-09 05:43:50,459 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d5b502f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:43:50, skipping insertion in model container [2024-11-09 05:43:50,461 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:43:50" (3/3) ... [2024-11-09 05:43:50,463 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-ci_file-81.i [2024-11-09 05:43:50,486 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 05:43:50,486 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 05:43:50,584 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 05:43:50,598 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;@51ebb159, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 05:43:50,599 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 05:43:50,605 INFO L276 IsEmpty]: Start isEmpty. Operand has 58 states, 24 states have (on average 1.125) internal successors, (27), 25 states have internal predecessors, (27), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-09 05:43:50,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-09 05:43:50,621 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:43:50,622 INFO L215 NwaCegarLoop]: trace histogram [31, 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] [2024-11-09 05:43:50,624 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:43:50,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:43:50,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1240715976, now seen corresponding path program 1 times [2024-11-09 05:43:50,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:43:50,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474911835] [2024-11-09 05:43:50,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:43:50,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:43:51,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:43:59,311 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 17 proven. 41 refuted. 0 times theorem prover too weak. 872 trivial. 0 not checked. [2024-11-09 05:43:59,312 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:43:59,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474911835] [2024-11-09 05:43:59,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474911835] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:43:59,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988438986] [2024-11-09 05:43:59,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:43:59,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:43:59,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5572c475-cac3-4294-ab8c-c6a3707a7a12/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:43:59,320 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5572c475-cac3-4294-ab8c-c6a3707a7a12/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:43:59,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5572c475-cac3-4294-ab8c-c6a3707a7a12/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 05:44:00,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:44:00,419 INFO L255 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-11-09 05:44:00,444 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:50:35,460 WARN L286 SmtUtils]: Spent 7.42s on a formula simplification. DAG size of input: 1277 DAG size of output: 1272 (called from [L 272] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDml.applyElimination) [2024-11-09 05:51:11,336 WARN L286 SmtUtils]: Spent 6.59s on a formula simplification. DAG size of input: 946 DAG size of output: 954 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 05:52:37,936 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 506 proven. 196 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2024-11-09 05:52:37,937 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:58:02,942 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 41 proven. 73 refuted. 0 times theorem prover too weak. 816 trivial. 0 not checked. [2024-11-09 05:58:02,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988438986] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:58:02,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [362361] [2024-11-09 05:58:02,985 INFO L159 IcfgInterpreter]: Started Sifa with 56 locations of interest [2024-11-09 05:58:02,986 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:58:02,990 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:58:02,998 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:58:02,999 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs