./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-87.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_f125a3cc-2092-4125-9c14-ede187b92f96/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f125a3cc-2092-4125-9c14-ede187b92f96/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_f125a3cc-2092-4125-9c14-ede187b92f96/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f125a3cc-2092-4125-9c14-ede187b92f96/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-87.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f125a3cc-2092-4125-9c14-ede187b92f96/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_f125a3cc-2092-4125-9c14-ede187b92f96/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 1733340110531036ec2730e9cf68ec8d1d2e7f12e2ee065e03b827b6d5da2aba --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 19:29:55,048 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 19:29:55,113 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f125a3cc-2092-4125-9c14-ede187b92f96/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 19:29:55,118 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 19:29:55,119 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 19:29:55,144 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 19:29:55,144 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 19:29:55,145 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 19:29:55,145 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 19:29:55,146 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 19:29:55,146 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 19:29:55,147 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 19:29:55,147 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 19:29:55,148 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 19:29:55,148 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 19:29:55,149 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 19:29:55,149 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 19:29:55,150 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 19:29:55,150 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 19:29:55,151 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 19:29:55,151 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 19:29:55,152 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 19:29:55,153 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 19:29:55,153 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 19:29:55,154 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 19:29:55,154 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 19:29:55,154 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 19:29:55,155 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 19:29:55,155 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 19:29:55,156 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 19:29:55,156 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 19:29:55,156 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 19:29:55,157 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 19:29:55,157 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 19:29:55,157 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 19:29:55,158 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 19:29:55,158 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 19:29:55,158 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:29:55,158 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 19:29:55,158 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 19:29:55,159 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 19:29:55,159 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 19:29:55,159 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 19:29:55,159 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 19:29:55,160 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 19:29:55,160 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 19:29:55,160 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 19:29:55,160 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_f125a3cc-2092-4125-9c14-ede187b92f96/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f125a3cc-2092-4125-9c14-ede187b92f96/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1733340110531036ec2730e9cf68ec8d1d2e7f12e2ee065e03b827b6d5da2aba [2023-12-02 19:29:55,398 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 19:29:55,418 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 19:29:55,421 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 19:29:55,422 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 19:29:55,422 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 19:29:55,424 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f125a3cc-2092-4125-9c14-ede187b92f96/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-87.i [2023-12-02 19:29:58,097 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 19:29:58,317 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 19:29:58,318 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f125a3cc-2092-4125-9c14-ede187b92f96/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-87.i [2023-12-02 19:29:58,327 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f125a3cc-2092-4125-9c14-ede187b92f96/bin/utaipan-verify-nQ1chXbOIh/data/ff2e6bc6e/5913fa7e1f9548a1ae21abbdb8a01c79/FLAG5f53ae339 [2023-12-02 19:29:58,338 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f125a3cc-2092-4125-9c14-ede187b92f96/bin/utaipan-verify-nQ1chXbOIh/data/ff2e6bc6e/5913fa7e1f9548a1ae21abbdb8a01c79 [2023-12-02 19:29:58,341 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 19:29:58,342 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 19:29:58,343 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 19:29:58,343 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 19:29:58,348 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 19:29:58,349 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:29:58" (1/1) ... [2023-12-02 19:29:58,350 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75a85cf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:29:58, skipping insertion in model container [2023-12-02 19:29:58,351 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:29:58" (1/1) ... [2023-12-02 19:29:58,385 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 19:29:58,536 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_f125a3cc-2092-4125-9c14-ede187b92f96/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-87.i[917,930] [2023-12-02 19:29:58,587 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:29:58,600 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 19:29:58,611 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_f125a3cc-2092-4125-9c14-ede187b92f96/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-87.i[917,930] [2023-12-02 19:29:58,642 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:29:58,663 INFO L206 MainTranslator]: Completed translation [2023-12-02 19:29:58,664 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:29:58 WrapperNode [2023-12-02 19:29:58,664 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 19:29:58,665 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 19:29:58,665 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 19:29:58,665 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 19:29:58,673 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:29:58" (1/1) ... [2023-12-02 19:29:58,684 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:29:58" (1/1) ... [2023-12-02 19:29:58,719 INFO L138 Inliner]: procedures = 26, calls = 145, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 366 [2023-12-02 19:29:58,719 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 19:29:58,720 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 19:29:58,720 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 19:29:58,720 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 19:29:58,730 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:29:58" (1/1) ... [2023-12-02 19:29:58,730 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:29:58" (1/1) ... [2023-12-02 19:29:58,735 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:29:58" (1/1) ... [2023-12-02 19:29:58,735 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:29:58" (1/1) ... [2023-12-02 19:29:58,749 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:29:58" (1/1) ... [2023-12-02 19:29:58,754 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:29:58" (1/1) ... [2023-12-02 19:29:58,757 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:29:58" (1/1) ... [2023-12-02 19:29:58,759 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:29:58" (1/1) ... [2023-12-02 19:29:58,763 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 19:29:58,764 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 19:29:58,764 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 19:29:58,765 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 19:29:58,765 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:29:58" (1/1) ... [2023-12-02 19:29:58,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:29:58,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f125a3cc-2092-4125-9c14-ede187b92f96/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:29:58,801 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f125a3cc-2092-4125-9c14-ede187b92f96/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 19:29:58,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f125a3cc-2092-4125-9c14-ede187b92f96/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 19:29:58,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 19:29:58,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 19:29:58,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 19:29:58,831 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 19:29:58,831 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 19:29:58,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 19:29:58,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 19:29:58,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 19:29:58,929 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 19:29:58,931 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 19:29:59,268 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 19:29:59,782 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 19:29:59,783 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 19:29:59,784 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:29:59 BoogieIcfgContainer [2023-12-02 19:29:59,784 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 19:29:59,787 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 19:29:59,787 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 19:29:59,790 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 19:29:59,790 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:29:58" (1/3) ... [2023-12-02 19:29:59,791 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@463ef602 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:29:59, skipping insertion in model container [2023-12-02 19:29:59,791 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:29:58" (2/3) ... [2023-12-02 19:29:59,791 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@463ef602 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:29:59, skipping insertion in model container [2023-12-02 19:29:59,791 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:29:59" (3/3) ... [2023-12-02 19:29:59,793 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-sp_file-87.i [2023-12-02 19:29:59,811 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 19:29:59,811 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 19:29:59,858 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 19:29:59,864 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;@499fd513, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 19:29:59,865 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 19:29:59,869 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 19:29:59,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-02 19:29:59,878 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:29:59,879 INFO L195 NwaCegarLoop]: trace histogram [14, 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 19:29:59,880 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:29:59,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:29:59,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1897520887, now seen corresponding path program 1 times [2023-12-02 19:29:59,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:29:59,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833475386] [2023-12-02 19:29:59,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:29:59,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:30:00,109 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:30:00,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [316191388] [2023-12-02 19:30:00,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:30:00,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:30:00,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f125a3cc-2092-4125-9c14-ede187b92f96/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:30:00,114 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f125a3cc-2092-4125-9c14-ede187b92f96/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:30:00,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f125a3cc-2092-4125-9c14-ede187b92f96/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 19:30:00,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:30:00,859 INFO L262 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 135 conjunts are in the unsatisfiable core [2023-12-02 19:30:00,893 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:30:01,426 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 15 treesize of output 1 [2023-12-02 19:30:02,695 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 15 treesize of output 1 [2023-12-02 19:30:04,192 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-02 19:30:05,244 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-02 19:30:06,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-02 19:30:07,070 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-02 19:30:08,038 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-02 19:30:12,402 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 219 treesize of output 179 [2023-12-02 19:30:12,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:30:12,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:30:12,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:30:12,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:30:12,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:30:12,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:30:12,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:30:12,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:30:12,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:30:12,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:30:12,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:30:12,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:30:12,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:30:12,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:30:12,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:30:12,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:30:12,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:30:12,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:30:12,659 INFO L224 Elim1Store]: Index analysis took 137 ms [2023-12-02 19:30:12,663 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 36 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 111 treesize of output 208 [2023-12-02 19:30:15,078 INFO L349 Elim1Store]: treesize reduction 53, result has 25.4 percent of original size [2023-12-02 19:30:15,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 685 treesize of output 602 [2023-12-02 19:30:21,948 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 68 proven. 42 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-02 19:30:21,948 INFO L327 TraceCheckSpWp]: Computing backward predicates...