./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-38.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_98793e35-ea85-4d3b-a308-ca43e8a8333e/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98793e35-ea85-4d3b-a308-ca43e8a8333e/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98793e35-ea85-4d3b-a308-ca43e8a8333e/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98793e35-ea85-4d3b-a308-ca43e8a8333e/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-38.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98793e35-ea85-4d3b-a308-ca43e8a8333e/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98793e35-ea85-4d3b-a308-ca43e8a8333e/bin/utaipan-verify-nQ1chXbOIh --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 a66395e9b9e9d3ed5ab02e44ee80d513c62f29820549c5075cb60199ac316149 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 17:41:08,837 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 17:41:08,899 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98793e35-ea85-4d3b-a308-ca43e8a8333e/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 17:41:08,904 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 17:41:08,904 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 17:41:08,927 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 17:41:08,928 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 17:41:08,928 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 17:41:08,929 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 17:41:08,929 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 17:41:08,930 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 17:41:08,930 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 17:41:08,931 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 17:41:08,931 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 17:41:08,932 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 17:41:08,932 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 17:41:08,933 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 17:41:08,934 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 17:41:08,934 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 17:41:08,935 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 17:41:08,935 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 17:41:08,936 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 17:41:08,937 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 17:41:08,937 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 17:41:08,938 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 17:41:08,938 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 17:41:08,939 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 17:41:08,939 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 17:41:08,940 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 17:41:08,940 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 17:41:08,941 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 17:41:08,941 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 17:41:08,941 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 17:41:08,942 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 17:41:08,942 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 17:41:08,942 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 17:41:08,942 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 17:41:08,942 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:41:08,943 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 17:41:08,943 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 17:41:08,943 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 17:41:08,943 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 17:41:08,944 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 17:41:08,944 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 17:41:08,944 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 17:41:08,944 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 17:41:08,944 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 17:41:08,944 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_98793e35-ea85-4d3b-a308-ca43e8a8333e/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98793e35-ea85-4d3b-a308-ca43e8a8333e/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a66395e9b9e9d3ed5ab02e44ee80d513c62f29820549c5075cb60199ac316149 [2023-12-02 17:41:09,143 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 17:41:09,162 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 17:41:09,165 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 17:41:09,166 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 17:41:09,167 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 17:41:09,168 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98793e35-ea85-4d3b-a308-ca43e8a8333e/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-38.i [2023-12-02 17:41:11,827 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 17:41:12,045 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 17:41:12,046 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98793e35-ea85-4d3b-a308-ca43e8a8333e/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-38.i [2023-12-02 17:41:12,055 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98793e35-ea85-4d3b-a308-ca43e8a8333e/bin/utaipan-verify-nQ1chXbOIh/data/47ee03eba/5d9de0dadae6483bb2a1a2fbe293846d/FLAG3e0c41961 [2023-12-02 17:41:12,067 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98793e35-ea85-4d3b-a308-ca43e8a8333e/bin/utaipan-verify-nQ1chXbOIh/data/47ee03eba/5d9de0dadae6483bb2a1a2fbe293846d [2023-12-02 17:41:12,070 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 17:41:12,072 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 17:41:12,073 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 17:41:12,073 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 17:41:12,078 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 17:41:12,079 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:41:12" (1/1) ... [2023-12-02 17:41:12,080 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ad3c834 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:41:12, skipping insertion in model container [2023-12-02 17:41:12,080 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:41:12" (1/1) ... [2023-12-02 17:41:12,113 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 17:41:12,248 WARN L240 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_98793e35-ea85-4d3b-a308-ca43e8a8333e/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-38.i[916,929] [2023-12-02 17:41:12,307 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:41:12,319 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 17:41:12,331 WARN L240 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_98793e35-ea85-4d3b-a308-ca43e8a8333e/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-38.i[916,929] [2023-12-02 17:41:12,369 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:41:12,388 INFO L206 MainTranslator]: Completed translation [2023-12-02 17:41:12,389 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:41:12 WrapperNode [2023-12-02 17:41:12,389 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 17:41:12,390 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 17:41:12,390 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 17:41:12,390 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 17:41:12,397 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:41:12" (1/1) ... [2023-12-02 17:41:12,413 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:41:12" (1/1) ... [2023-12-02 17:41:12,459 INFO L138 Inliner]: procedures = 29, calls = 177, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 446 [2023-12-02 17:41:12,460 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 17:41:12,460 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 17:41:12,461 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 17:41:12,461 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 17:41:12,471 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:41:12" (1/1) ... [2023-12-02 17:41:12,471 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:41:12" (1/1) ... [2023-12-02 17:41:12,478 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:41:12" (1/1) ... [2023-12-02 17:41:12,479 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:41:12" (1/1) ... [2023-12-02 17:41:12,503 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:41:12" (1/1) ... [2023-12-02 17:41:12,508 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:41:12" (1/1) ... [2023-12-02 17:41:12,512 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:41:12" (1/1) ... [2023-12-02 17:41:12,515 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:41:12" (1/1) ... [2023-12-02 17:41:12,522 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 17:41:12,523 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 17:41:12,523 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 17:41:12,524 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 17:41:12,524 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:41:12" (1/1) ... [2023-12-02 17:41:12,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:41:12,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98793e35-ea85-4d3b-a308-ca43e8a8333e/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:41:12,557 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98793e35-ea85-4d3b-a308-ca43e8a8333e/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 17:41:12,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98793e35-ea85-4d3b-a308-ca43e8a8333e/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 17:41:12,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 17:41:12,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-12-02 17:41:12,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 17:41:12,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-12-02 17:41:12,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 17:41:12,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2023-12-02 17:41:12,595 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 17:41:12,595 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 17:41:12,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 17:41:12,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 17:41:12,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 17:41:12,702 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 17:41:12,704 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 17:41:13,158 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 17:41:13,680 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 17:41:13,680 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 17:41:13,681 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:41:13 BoogieIcfgContainer [2023-12-02 17:41:13,682 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 17:41:13,684 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 17:41:13,684 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 17:41:13,687 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 17:41:13,688 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 05:41:12" (1/3) ... [2023-12-02 17:41:13,688 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41b5d31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:41:13, skipping insertion in model container [2023-12-02 17:41:13,688 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:41:12" (2/3) ... [2023-12-02 17:41:13,689 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41b5d31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:41:13, skipping insertion in model container [2023-12-02 17:41:13,689 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:41:13" (3/3) ... [2023-12-02 17:41:13,690 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-s_file-38.i [2023-12-02 17:41:13,708 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 17:41:13,708 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 17:41:13,755 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 17:41:13,762 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=true, 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;@ee70946, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 17:41:13,763 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 17:41:13,767 INFO L276 IsEmpty]: Start isEmpty. Operand has 57 states, 30 states have (on average 1.1) internal successors, (33), 31 states have internal predecessors, (33), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-02 17:41:13,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-02 17:41:13,779 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:41:13,779 INFO L195 NwaCegarLoop]: trace histogram [24, 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] [2023-12-02 17:41:13,780 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:41:13,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:41:13,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1923749108, now seen corresponding path program 1 times [2023-12-02 17:41:13,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:41:13,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122159422] [2023-12-02 17:41:13,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:41:13,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:41:16,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:41:39,476 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 4 proven. 19 refuted. 0 times theorem prover too weak. 529 trivial. 0 not checked. [2023-12-02 17:41:39,476 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:41:39,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122159422] [2023-12-02 17:41:39,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122159422] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:41:39,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981704669] [2023-12-02 17:41:39,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:41:39,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:41:39,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98793e35-ea85-4d3b-a308-ca43e8a8333e/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:41:39,480 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98793e35-ea85-4d3b-a308-ca43e8a8333e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:41:39,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98793e35-ea85-4d3b-a308-ca43e8a8333e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 17:46:54,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:46:54,999 INFO L262 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 152 conjunts are in the unsatisfiable core [2023-12-02 17:46:55,030 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:46:55,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 55 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 101 [2023-12-02 17:46:55,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 55 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 111 [2023-12-02 17:46:56,919 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:46:56,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 55 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 115 treesize of output 118 [2023-12-02 17:46:57,590 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:46:57,591 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 66 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 117 treesize of output 127 [2023-12-02 17:46:57,939 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:46:57,939 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 66 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 117 treesize of output 127 [2023-12-02 17:46:58,139 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:46:58,140 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 66 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 117 treesize of output 127 [2023-12-02 17:46:58,308 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:46:58,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 66 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 117 treesize of output 127 [2023-12-02 17:46:58,459 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:46:58,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 66 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 117 treesize of output 127 [2023-12-02 17:46:58,627 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:46:58,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 55 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 117 treesize of output 120 [2023-12-02 17:46:59,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 45 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 110 [2023-12-02 17:47:00,024 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:47:00,024 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 45 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 121 treesize of output 117 [2023-12-02 17:47:00,700 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:47:00,700 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 45 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 123 treesize of output 119 [2023-12-02 17:47:01,048 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:47:01,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 36 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 116 treesize of output 109 [2023-12-02 17:47:01,444 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:47:01,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 109 treesize of output 99 [2023-12-02 17:47:03,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 232 treesize of output 200 [2023-12-02 17:47:03,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 203 treesize of output 196 [2023-12-02 17:47:06,623 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 19 proven. 492 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-12-02 17:47:06,623 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:47:16,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2023-12-02 17:47:19,208 INFO L349 Elim1Store]: treesize reduction 40, result has 71.6 percent of original size [2023-12-02 17:47:19,209 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 180 treesize of output 214 [2023-12-02 17:47:19,435 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-12-02 17:47:19,436 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 119 treesize of output 109 [2023-12-02 17:47:25,943 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:47:25,943 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 11 select indices, 11 select index equivalence classes, 55 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 9 case distinctions, treesize of input 432 treesize of output 372 [2023-12-02 17:47:25,958 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 66 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 0 case distinctions, treesize of input 390 treesize of output 214 [2023-12-02 17:47:27,543 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 32 proven. 118 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2023-12-02 17:47:27,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981704669] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:47:27,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1529189858] [2023-12-02 17:47:27,568 INFO L159 IcfgInterpreter]: Started Sifa with 55 locations of interest [2023-12-02 17:47:27,568 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:47:27,571 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:47:27,575 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:47:27,576 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:53:49,414 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 12 for LOIs [2023-12-02 17:53:49,416 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:54:10,779 WARN L293 SmtUtils]: Spent 5.30s on a formula simplification that was a NOOP. DAG size: 276 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:54:21,164 WARN L293 SmtUtils]: Spent 9.08s on a formula simplification that was a NOOP. DAG size: 329 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:54:41,190 WARN L293 SmtUtils]: Spent 18.50s on a formula simplification that was a NOOP. DAG size: 325 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:55:15,367 WARN L293 SmtUtils]: Spent 32.32s on a formula simplification that was a NOOP. DAG size: 378 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)