./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-57.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_fc948509-ef8e-4c80-8ac7-9a295de39246/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc948509-ef8e-4c80-8ac7-9a295de39246/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_fc948509-ef8e-4c80-8ac7-9a295de39246/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc948509-ef8e-4c80-8ac7-9a295de39246/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-57.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc948509-ef8e-4c80-8ac7-9a295de39246/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_fc948509-ef8e-4c80-8ac7-9a295de39246/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 3d3457578c17fc1bdee00c1562f84acead0e6ee0268003a332891d4353885ff1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 08:26:21,992 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 08:26:22,054 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc948509-ef8e-4c80-8ac7-9a295de39246/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 08:26:22,058 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 08:26:22,059 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 08:26:22,081 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 08:26:22,082 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 08:26:22,083 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 08:26:22,083 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 08:26:22,084 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 08:26:22,084 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 08:26:22,085 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 08:26:22,085 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 08:26:22,086 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 08:26:22,086 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 08:26:22,087 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 08:26:22,087 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 08:26:22,088 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 08:26:22,088 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 08:26:22,089 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 08:26:22,089 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 08:26:22,090 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 08:26:22,090 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 08:26:22,091 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 08:26:22,091 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 08:26:22,092 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 08:26:22,092 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 08:26:22,092 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 08:26:22,093 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 08:26:22,093 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 08:26:22,093 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 08:26:22,094 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 08:26:22,094 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 08:26:22,094 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 08:26:22,094 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 08:26:22,095 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 08:26:22,095 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 08:26:22,095 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 08:26:22,095 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 08:26:22,095 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 08:26:22,096 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 08:26:22,096 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 08:26:22,096 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 08:26:22,096 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 08:26:22,096 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 08:26:22,097 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 08:26:22,097 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 08:26:22,097 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_fc948509-ef8e-4c80-8ac7-9a295de39246/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc948509-ef8e-4c80-8ac7-9a295de39246/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d3457578c17fc1bdee00c1562f84acead0e6ee0268003a332891d4353885ff1 [2023-12-02 08:26:22,322 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 08:26:22,344 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 08:26:22,346 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 08:26:22,348 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 08:26:22,348 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 08:26:22,349 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc948509-ef8e-4c80-8ac7-9a295de39246/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-57.i [2023-12-02 08:26:25,077 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 08:26:25,264 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 08:26:25,265 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc948509-ef8e-4c80-8ac7-9a295de39246/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-57.i [2023-12-02 08:26:25,275 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc948509-ef8e-4c80-8ac7-9a295de39246/bin/utaipan-verify-nQ1chXbOIh/data/f0cecad7a/449cb17c9b2a41c08a957cc7b86a38d4/FLAG2f964d323 [2023-12-02 08:26:25,288 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc948509-ef8e-4c80-8ac7-9a295de39246/bin/utaipan-verify-nQ1chXbOIh/data/f0cecad7a/449cb17c9b2a41c08a957cc7b86a38d4 [2023-12-02 08:26:25,290 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 08:26:25,292 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 08:26:25,293 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 08:26:25,293 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 08:26:25,298 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 08:26:25,298 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:26:25" (1/1) ... [2023-12-02 08:26:25,299 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74a227a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:26:25, skipping insertion in model container [2023-12-02 08:26:25,299 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:26:25" (1/1) ... [2023-12-02 08:26:25,326 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 08:26:25,443 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_fc948509-ef8e-4c80-8ac7-9a295de39246/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-57.i[916,929] [2023-12-02 08:26:25,488 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 08:26:25,501 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 08:26:25,514 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_fc948509-ef8e-4c80-8ac7-9a295de39246/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-57.i[916,929] [2023-12-02 08:26:25,541 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 08:26:25,558 INFO L206 MainTranslator]: Completed translation [2023-12-02 08:26:25,559 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:26:25 WrapperNode [2023-12-02 08:26:25,559 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 08:26:25,560 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 08:26:25,560 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 08:26:25,560 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 08:26:25,567 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:26:25" (1/1) ... [2023-12-02 08:26:25,579 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:26:25" (1/1) ... [2023-12-02 08:26:25,611 INFO L138 Inliner]: procedures = 29, calls = 152, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 401 [2023-12-02 08:26:25,612 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 08:26:25,612 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 08:26:25,612 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 08:26:25,613 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 08:26:25,622 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:26:25" (1/1) ... [2023-12-02 08:26:25,622 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:26:25" (1/1) ... [2023-12-02 08:26:25,628 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:26:25" (1/1) ... [2023-12-02 08:26:25,628 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:26:25" (1/1) ... [2023-12-02 08:26:25,642 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:26:25" (1/1) ... [2023-12-02 08:26:25,647 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:26:25" (1/1) ... [2023-12-02 08:26:25,650 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:26:25" (1/1) ... [2023-12-02 08:26:25,652 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:26:25" (1/1) ... [2023-12-02 08:26:25,657 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 08:26:25,658 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 08:26:25,658 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 08:26:25,658 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 08:26:25,659 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:26:25" (1/1) ... [2023-12-02 08:26:25,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 08:26:25,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc948509-ef8e-4c80-8ac7-9a295de39246/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 08:26:25,686 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc948509-ef8e-4c80-8ac7-9a295de39246/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 08:26:25,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc948509-ef8e-4c80-8ac7-9a295de39246/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 08:26:25,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 08:26:25,721 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-12-02 08:26:25,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 08:26:25,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-12-02 08:26:25,721 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 08:26:25,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2023-12-02 08:26:25,721 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 08:26:25,722 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 08:26:25,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 08:26:25,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 08:26:25,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 08:26:25,841 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 08:26:25,843 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 08:26:26,242 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 08:26:26,650 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 08:26:26,651 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 08:26:26,652 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:26:26 BoogieIcfgContainer [2023-12-02 08:26:26,652 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 08:26:26,655 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 08:26:26,655 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 08:26:26,658 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 08:26:26,658 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 08:26:25" (1/3) ... [2023-12-02 08:26:26,659 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30bc8b83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:26:26, skipping insertion in model container [2023-12-02 08:26:26,659 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:26:25" (2/3) ... [2023-12-02 08:26:26,660 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30bc8b83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:26:26, skipping insertion in model container [2023-12-02 08:26:26,660 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:26:26" (3/3) ... [2023-12-02 08:26:26,661 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-p_file-57.i [2023-12-02 08:26:26,679 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 08:26:26,680 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 08:26:26,726 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 08:26:26,733 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;@74c6cafe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 08:26:26,733 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 08:26:26,737 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 24 states have (on average 1.125) internal successors, (27), 25 states have internal predecessors, (27), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-02 08:26:26,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-02 08:26:26,747 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:26:26,748 INFO L195 NwaCegarLoop]: trace histogram [18, 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 08:26:26,748 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:26:26,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:26:26,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1001426818, now seen corresponding path program 1 times [2023-12-02 08:26:26,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:26:26,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888121044] [2023-12-02 08:26:26,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:26:26,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:26:30,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:27:03,687 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 6 proven. 26 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2023-12-02 08:27:03,688 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:27:03,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888121044] [2023-12-02 08:27:03,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888121044] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 08:27:03,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963438053] [2023-12-02 08:27:03,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:27:03,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 08:27:03,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc948509-ef8e-4c80-8ac7-9a295de39246/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 08:27:03,691 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc948509-ef8e-4c80-8ac7-9a295de39246/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 08:27:03,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc948509-ef8e-4c80-8ac7-9a295de39246/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 08:27:04,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:27:04,645 INFO L262 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 193 conjunts are in the unsatisfiable core [2023-12-02 08:27:04,680 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:27:05,525 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 26 [2023-12-02 08:27:08,266 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 26 [2023-12-02 08:27:10,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 26 [2023-12-02 08:27:11,882 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 26 [2023-12-02 08:27:14,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 45 [2023-12-02 08:27:15,696 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 41 [2023-12-02 08:27:17,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 53 [2023-12-02 08:27:20,011 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 66 [2023-12-02 08:27:22,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 76 [2023-12-02 08:27:28,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 08:27:28,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 08:27:28,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 08:27:28,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 08:27:28,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 08:27:28,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 08:27:28,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 08:27:28,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 08:27:28,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 08:27:28,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 08:27:28,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 10 select indices, 10 select index equivalence classes, 55 disjoint index pairs (out of 45 index pairs), introduced 12 new quantified variables, introduced 0 case distinctions, treesize of input 245 treesize of output 321 [2023-12-02 08:27:28,785 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 0 case distinctions, treesize of input 137 treesize of output 134 [2023-12-02 08:27:34,968 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 6 proven. 292 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 08:27:34,968 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 08:27:37,495 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:27:37,495 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 169 treesize of output 167 [2023-12-02 08:27:41,308 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-12-02 08:27:41,308 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 174 treesize of output 164