./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursified_nla-digbench/recursified_freire2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 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_b0e09c1a-c052-4ca6-a78c-3752bd569fca/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0e09c1a-c052-4ca6-a78c-3752bd569fca/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0e09c1a-c052-4ca6-a78c-3752bd569fca/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0e09c1a-c052-4ca6-a78c-3752bd569fca/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursified_nla-digbench/recursified_freire2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0e09c1a-c052-4ca6-a78c-3752bd569fca/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0e09c1a-c052-4ca6-a78c-3752bd569fca/bin/utaipan-verify-mE87zJ7Ire --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 fe305249fd372aa93f06f96f19c9f980fcfbf950606534816ffa9c7d79f22fc1 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:33:11,633 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:33:11,788 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0e09c1a-c052-4ca6-a78c-3752bd569fca/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 20:33:11,801 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:33:11,804 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:33:11,856 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:33:11,858 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:33:11,859 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:33:11,860 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:33:11,867 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:33:11,868 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:33:11,869 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:33:11,870 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:33:11,872 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 20:33:11,873 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:33:11,874 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:33:11,874 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 20:33:11,875 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 20:33:11,876 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:33:11,876 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 20:33:11,877 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 20:33:11,878 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 20:33:11,880 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:33:11,881 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:33:11,881 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 20:33:11,882 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:33:11,883 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 20:33:11,883 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:33:11,884 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:33:11,885 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:33:11,887 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:33:11,887 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 20:33:11,888 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:33:11,888 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:33:11,889 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:33:11,889 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 20:33:11,890 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:33:11,890 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:33:11,892 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:33:11,892 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:33:11,893 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:33:11,893 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 20:33:11,894 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:33:11,894 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:33:11,895 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:33:11,895 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:33:11,896 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:33:11,896 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_b0e09c1a-c052-4ca6-a78c-3752bd569fca/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0e09c1a-c052-4ca6-a78c-3752bd569fca/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe305249fd372aa93f06f96f19c9f980fcfbf950606534816ffa9c7d79f22fc1 [2023-11-23 20:33:12,386 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:33:12,429 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:33:12,433 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:33:12,436 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:33:12,437 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:33:12,439 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0e09c1a-c052-4ca6-a78c-3752bd569fca/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/recursified_nla-digbench/recursified_freire2.c [2023-11-23 20:33:16,067 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:33:16,253 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:33:16,254 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0e09c1a-c052-4ca6-a78c-3752bd569fca/sv-benchmarks/c/recursified_nla-digbench/recursified_freire2.c [2023-11-23 20:33:16,262 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0e09c1a-c052-4ca6-a78c-3752bd569fca/bin/utaipan-verify-mE87zJ7Ire/data/8b54aa2d8/091a8c345b9d4151bad08e3528496d8a/FLAGdf26a1471 [2023-11-23 20:33:16,277 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0e09c1a-c052-4ca6-a78c-3752bd569fca/bin/utaipan-verify-mE87zJ7Ire/data/8b54aa2d8/091a8c345b9d4151bad08e3528496d8a [2023-11-23 20:33:16,279 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:33:16,281 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:33:16,283 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:33:16,283 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:33:16,288 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:33:16,289 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:33:16" (1/1) ... [2023-11-23 20:33:16,290 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19beb9fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:16, skipping insertion in model container [2023-11-23 20:33:16,291 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:33:16" (1/1) ... [2023-11-23 20:33:16,315 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:33:16,467 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_b0e09c1a-c052-4ca6-a78c-3752bd569fca/sv-benchmarks/c/recursified_nla-digbench/recursified_freire2.c[1239,1252] [2023-11-23 20:33:16,493 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:33:16,508 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:33:16,520 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_b0e09c1a-c052-4ca6-a78c-3752bd569fca/sv-benchmarks/c/recursified_nla-digbench/recursified_freire2.c[1239,1252] [2023-11-23 20:33:16,537 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:33:16,552 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:33:16,553 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:16 WrapperNode [2023-11-23 20:33:16,553 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:33:16,560 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:33:16,560 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:33:16,560 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:33:16,568 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:16" (1/1) ... [2023-11-23 20:33:16,577 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:16" (1/1) ... [2023-11-23 20:33:16,599 INFO L138 Inliner]: procedures = 18, calls = 76, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 77 [2023-11-23 20:33:16,599 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:33:16,600 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:33:16,600 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:33:16,600 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:33:16,610 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:16" (1/1) ... [2023-11-23 20:33:16,610 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:16" (1/1) ... [2023-11-23 20:33:16,614 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:16" (1/1) ... [2023-11-23 20:33:16,615 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:16" (1/1) ... [2023-11-23 20:33:16,624 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:16" (1/1) ... [2023-11-23 20:33:16,626 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:16" (1/1) ... [2023-11-23 20:33:16,629 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:16" (1/1) ... [2023-11-23 20:33:16,630 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:16" (1/1) ... [2023-11-23 20:33:16,634 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:33:16,635 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:33:16,635 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:33:16,635 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:33:16,636 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:16" (1/1) ... [2023-11-23 20:33:16,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:33:16,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0e09c1a-c052-4ca6-a78c-3752bd569fca/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:33:16,676 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0e09c1a-c052-4ca6-a78c-3752bd569fca/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 20:33:16,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0e09c1a-c052-4ca6-a78c-3752bd569fca/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 20:33:16,719 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_0_to_36_0 [2023-11-23 20:33:16,720 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_0_to_36_0 [2023-11-23 20:33:16,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:33:16,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:33:16,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:33:16,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 20:33:16,721 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-23 20:33:16,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-11-23 20:33:16,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:33:16,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:33:16,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 20:33:16,722 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 20:33:16,722 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 20:33:16,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:33:16,838 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:33:16,841 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:33:17,208 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:33:17,266 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:33:17,267 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 20:33:17,269 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:33:17 BoogieIcfgContainer [2023-11-23 20:33:17,270 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:33:17,273 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 20:33:17,273 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 20:33:17,278 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 20:33:17,278 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:33:16" (1/3) ... [2023-11-23 20:33:17,279 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ce90c26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:33:17, skipping insertion in model container [2023-11-23 20:33:17,280 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:16" (2/3) ... [2023-11-23 20:33:17,281 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ce90c26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:33:17, skipping insertion in model container [2023-11-23 20:33:17,281 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:33:17" (3/3) ... [2023-11-23 20:33:17,283 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_freire2.c [2023-11-23 20:33:17,301 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 20:33:17,301 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 20:33:17,356 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 20:33:17,364 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;@45fa808b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 20:33:17,365 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 20:33:17,369 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 16 states have (on average 1.25) internal successors, (20), 18 states have internal predecessors, (20), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-23 20:33:17,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-23 20:33:17,378 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:33:17,378 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:33:17,379 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:33:17,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:33:17,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1408384077, now seen corresponding path program 1 times [2023-11-23 20:33:17,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:33:17,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362314776] [2023-11-23 20:33:17,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:33:17,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:33:17,559 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 20:33:17,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [718798152] [2023-11-23 20:33:17,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:33:17,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:33:17,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0e09c1a-c052-4ca6-a78c-3752bd569fca/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:33:17,563 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0e09c1a-c052-4ca6-a78c-3752bd569fca/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:33:17,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0e09c1a-c052-4ca6-a78c-3752bd569fca/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 20:33:17,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:33:17,759 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:33:17,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:33:17,871 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-23 20:33:17,876 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 20:33:17,877 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 20:33:17,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0e09c1a-c052-4ca6-a78c-3752bd569fca/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 20:33:18,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0e09c1a-c052-4ca6-a78c-3752bd569fca/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-23 20:33:18,094 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-23 20:33:18,100 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 20:33:18,122 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem6 could not be translated [2023-11-23 20:33:18,145 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem5 could not be translated [2023-11-23 20:33:18,146 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem4 could not be translated [2023-11-23 20:33:18,167 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 08:33:18 BoogieIcfgContainer [2023-11-23 20:33:18,167 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 20:33:18,168 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 20:33:18,168 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 20:33:18,169 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 20:33:18,170 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:33:17" (3/4) ... [2023-11-23 20:33:18,172 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 20:33:18,174 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 20:33:18,176 INFO L158 Benchmark]: Toolchain (without parser) took 1894.46ms. Allocated memory was 151.0MB in the beginning and 203.4MB in the end (delta: 52.4MB). Free memory was 103.1MB in the beginning and 173.0MB in the end (delta: -69.9MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:33:18,176 INFO L158 Benchmark]: CDTParser took 0.42ms. Allocated memory is still 151.0MB. Free memory is still 120.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:33:18,177 INFO L158 Benchmark]: CACSL2BoogieTranslator took 276.12ms. Allocated memory is still 151.0MB. Free memory was 102.8MB in the beginning and 91.4MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-23 20:33:18,178 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.89ms. Allocated memory is still 151.0MB. Free memory was 91.4MB in the beginning and 89.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:33:18,179 INFO L158 Benchmark]: Boogie Preprocessor took 34.14ms. Allocated memory is still 151.0MB. Free memory was 89.6MB in the beginning and 88.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:33:18,180 INFO L158 Benchmark]: RCFGBuilder took 635.23ms. Allocated memory is still 151.0MB. Free memory was 88.1MB in the beginning and 71.5MB in the end (delta: 16.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-23 20:33:18,181 INFO L158 Benchmark]: TraceAbstraction took 894.21ms. Allocated memory was 151.0MB in the beginning and 203.4MB in the end (delta: 52.4MB). Free memory was 70.6MB in the beginning and 173.0MB in the end (delta: -102.5MB). Peak memory consumption was 36.5MB. Max. memory is 16.1GB. [2023-11-23 20:33:18,182 INFO L158 Benchmark]: Witness Printer took 6.07ms. Allocated memory is still 203.4MB. Free memory is still 173.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:33:18,186 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42ms. Allocated memory is still 151.0MB. Free memory is still 120.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 276.12ms. Allocated memory is still 151.0MB. Free memory was 102.8MB in the beginning and 91.4MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.89ms. Allocated memory is still 151.0MB. Free memory was 91.4MB in the beginning and 89.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.14ms. Allocated memory is still 151.0MB. Free memory was 89.6MB in the beginning and 88.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 635.23ms. Allocated memory is still 151.0MB. Free memory was 88.1MB in the beginning and 71.5MB in the end (delta: 16.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 894.21ms. Allocated memory was 151.0MB in the beginning and 203.4MB in the end (delta: 52.4MB). Free memory was 70.6MB in the beginning and 173.0MB in the end (delta: -102.5MB). Peak memory consumption was 36.5MB. Max. memory is 16.1GB. * Witness Printer took 6.07ms. Allocated memory is still 203.4MB. Free memory is still 173.0MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem6 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem4 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 43]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of to_int at line 58. Possible FailurePath: [L81] int r; [L82] double a; [L83] double x; [L84] double s; [L85] a = __VERIFIER_nondet_double() [L86] EXPR \read(a) [L86] x = a [L87] s = 3.25 [L88] r = 1 VAL [a={4:0}, r={6:0}, s={7:0}, x={5:0}] [L89] CALL func_to_recursive_line_0_to_36_0(&s, &a, &x, &r) VAL [a={4:0}, r={6:0}, s={7:0}, x={5:0}] [L58] EXPR \read(*s) [L58] EXPR \read(*r) [L58] EXPR \read(*r) VAL [a={4:0}, a={4:0}, r={6:0}, r={6:0}, s={7:0}, s={7:0}, x={5:0}, x={5:0}] [L58] CALL __VERIFIER_assert((((int) (4 * (*s))) - ((12 * (*r)) * (*r))) == 1) VAL [\old(cond)=0] [L39] COND TRUE !cond VAL [\old(cond)=0, cond=0] [L43] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-23 20:33:18,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0e09c1a-c052-4ca6-a78c-3752bd569fca/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_b0e09c1a-c052-4ca6-a78c-3752bd569fca/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0e09c1a-c052-4ca6-a78c-3752bd569fca/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0e09c1a-c052-4ca6-a78c-3752bd569fca/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0e09c1a-c052-4ca6-a78c-3752bd569fca/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursified_nla-digbench/recursified_freire2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0e09c1a-c052-4ca6-a78c-3752bd569fca/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0e09c1a-c052-4ca6-a78c-3752bd569fca/bin/utaipan-verify-mE87zJ7Ire --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 fe305249fd372aa93f06f96f19c9f980fcfbf950606534816ffa9c7d79f22fc1 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:33:21,250 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:33:21,388 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0e09c1a-c052-4ca6-a78c-3752bd569fca/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-23 20:33:21,404 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:33:21,405 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:33:21,450 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:33:21,451 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:33:21,452 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:33:21,453 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:33:21,458 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:33:21,458 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:33:21,459 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:33:21,459 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:33:21,461 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:33:21,461 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:33:21,461 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:33:21,463 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:33:21,463 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:33:21,463 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 20:33:21,464 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 20:33:21,465 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:33:21,465 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:33:21,466 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:33:21,466 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:33:21,467 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 20:33:21,467 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 20:33:21,467 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 20:33:21,468 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 20:33:21,468 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:33:21,469 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:33:21,470 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:33:21,470 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 20:33:21,470 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 20:33:21,471 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:33:21,471 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:33:21,471 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:33:21,472 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:33:21,472 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:33:21,472 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 20:33:21,473 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 20:33:21,473 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:33:21,474 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:33:21,474 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:33:21,474 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:33:21,475 INFO L153 SettingsManager]: * Logic for external solver=AUFBV 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_b0e09c1a-c052-4ca6-a78c-3752bd569fca/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0e09c1a-c052-4ca6-a78c-3752bd569fca/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe305249fd372aa93f06f96f19c9f980fcfbf950606534816ffa9c7d79f22fc1 [2023-11-23 20:33:21,890 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:33:21,919 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:33:21,921 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:33:21,923 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:33:21,923 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:33:21,924 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0e09c1a-c052-4ca6-a78c-3752bd569fca/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/recursified_nla-digbench/recursified_freire2.c [2023-11-23 20:33:25,159 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:33:25,485 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:33:25,486 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0e09c1a-c052-4ca6-a78c-3752bd569fca/sv-benchmarks/c/recursified_nla-digbench/recursified_freire2.c [2023-11-23 20:33:25,497 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0e09c1a-c052-4ca6-a78c-3752bd569fca/bin/utaipan-verify-mE87zJ7Ire/data/caf0ebb9b/e0b0c067727f4a5a9fc48b2252a269c3/FLAG02e02ba25 [2023-11-23 20:33:25,515 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0e09c1a-c052-4ca6-a78c-3752bd569fca/bin/utaipan-verify-mE87zJ7Ire/data/caf0ebb9b/e0b0c067727f4a5a9fc48b2252a269c3 [2023-11-23 20:33:25,518 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:33:25,520 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:33:25,522 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:33:25,522 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:33:25,529 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:33:25,530 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:33:25" (1/1) ... [2023-11-23 20:33:25,531 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a4dc29a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:25, skipping insertion in model container [2023-11-23 20:33:25,531 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:33:25" (1/1) ... [2023-11-23 20:33:25,560 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:33:25,740 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_b0e09c1a-c052-4ca6-a78c-3752bd569fca/sv-benchmarks/c/recursified_nla-digbench/recursified_freire2.c[1239,1252] [2023-11-23 20:33:25,784 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:33:25,820 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:33:25,866 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_b0e09c1a-c052-4ca6-a78c-3752bd569fca/sv-benchmarks/c/recursified_nla-digbench/recursified_freire2.c[1239,1252] [2023-11-23 20:33:25,895 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:33:25,916 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:33:25,917 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:25 WrapperNode [2023-11-23 20:33:25,917 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:33:25,919 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:33:25,919 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:33:25,919 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:33:25,928 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:25" (1/1) ... [2023-11-23 20:33:25,943 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:25" (1/1) ... [2023-11-23 20:33:25,985 INFO L138 Inliner]: procedures = 21, calls = 76, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 78 [2023-11-23 20:33:25,985 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:33:25,986 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:33:25,986 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:33:25,987 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:33:26,001 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:25" (1/1) ... [2023-11-23 20:33:26,001 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:25" (1/1) ... [2023-11-23 20:33:26,008 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:25" (1/1) ... [2023-11-23 20:33:26,009 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:25" (1/1) ... [2023-11-23 20:33:26,022 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:25" (1/1) ... [2023-11-23 20:33:26,024 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:25" (1/1) ... [2023-11-23 20:33:26,028 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:25" (1/1) ... [2023-11-23 20:33:26,030 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:25" (1/1) ... [2023-11-23 20:33:26,036 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:33:26,037 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:33:26,037 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:33:26,037 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:33:26,038 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:25" (1/1) ... [2023-11-23 20:33:26,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:33:26,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0e09c1a-c052-4ca6-a78c-3752bd569fca/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:33:26,084 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0e09c1a-c052-4ca6-a78c-3752bd569fca/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 20:33:26,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0e09c1a-c052-4ca6-a78c-3752bd569fca/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 20:33:26,132 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_0_to_36_0 [2023-11-23 20:33:26,132 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_0_to_36_0 [2023-11-23 20:33:26,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:33:26,132 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2023-11-23 20:33:26,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2023-11-23 20:33:26,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 20:33:26,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:33:26,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-23 20:33:26,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:33:26,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:33:26,133 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 20:33:26,134 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 20:33:26,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:33:26,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-23 20:33:26,259 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:33:26,263 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:33:28,967 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:33:29,037 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:33:29,037 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 20:33:29,042 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:33:29 BoogieIcfgContainer [2023-11-23 20:33:29,042 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:33:29,045 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 20:33:29,045 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 20:33:29,050 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 20:33:29,050 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:33:25" (1/3) ... [2023-11-23 20:33:29,052 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f03006a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:33:29, skipping insertion in model container [2023-11-23 20:33:29,052 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:25" (2/3) ... [2023-11-23 20:33:29,055 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f03006a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:33:29, skipping insertion in model container [2023-11-23 20:33:29,056 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:33:29" (3/3) ... [2023-11-23 20:33:29,057 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_freire2.c [2023-11-23 20:33:29,072 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 20:33:29,073 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 20:33:29,136 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 20:33:29,144 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;@37eeb848, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 20:33:29,144 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 20:33:29,150 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 16 states have (on average 1.25) internal successors, (20), 18 states have internal predecessors, (20), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-23 20:33:29,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-23 20:33:29,157 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:33:29,157 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:33:29,158 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:33:29,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:33:29,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1408384077, now seen corresponding path program 1 times [2023-11-23 20:33:29,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 20:33:29,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [925547217] [2023-11-23 20:33:29,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:33:29,181 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:33:29,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0e09c1a-c052-4ca6-a78c-3752bd569fca/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 20:33:29,184 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0e09c1a-c052-4ca6-a78c-3752bd569fca/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 20:33:29,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0e09c1a-c052-4ca6-a78c-3752bd569fca/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-23 20:33:29,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:33:29,590 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:33:29,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:33:29,824 ERROR L246 FreeRefinementEngine]: Caught known exception: Invalid model [2023-11-23 20:33:29,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [923333974] [2023-11-23 20:33:29,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:33:29,826 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-23 20:33:29,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0e09c1a-c052-4ca6-a78c-3752bd569fca/bin/utaipan-verify-mE87zJ7Ire/cvc4 [2023-11-23 20:33:29,856 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0e09c1a-c052-4ca6-a78c-3752bd569fca/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-23 20:33:29,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0e09c1a-c052-4ca6-a78c-3752bd569fca/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2023-11-23 20:33:30,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:33:30,344 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-23 20:33:30,349 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:33:30,834 INFO L349 Elim1Store]: treesize reduction 48, result has 40.7 percent of original size [2023-11-23 20:33:30,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 155 treesize of output 114 [2023-11-23 20:33:30,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:33:30,918 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-23 20:33:30,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 120 treesize of output 112 [2023-11-23 20:33:31,133 INFO L349 Elim1Store]: treesize reduction 13, result has 38.1 percent of original size [2023-11-23 20:33:31,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 110 treesize of output 83 [2023-11-23 20:33:31,213 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2023-11-23 20:33:31,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:33:31,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:33:31,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:33:31,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 64 [2023-11-23 20:33:31,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:33:31,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-11-23 20:33:32,000 INFO L349 Elim1Store]: treesize reduction 38, result has 42.4 percent of original size [2023-11-23 20:33:32,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 105 treesize of output 94 [2023-11-23 20:33:32,032 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-23 20:33:32,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 94 treesize of output 95 [2023-11-23 20:33:32,098 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 24 treesize of output 37 [2023-11-23 20:33:32,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:33:32,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:33:32,310 INFO L349 Elim1Store]: treesize reduction 16, result has 46.7 percent of original size [2023-11-23 20:33:32,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 36 [2023-11-23 20:33:34,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:33:34,151 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 36 [2023-11-23 20:33:34,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 24 treesize of output 37 [2023-11-23 20:33:34,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:33:34,965 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 28 [2023-11-23 20:33:34,994 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 24 treesize of output 37 [2023-11-23 20:33:35,793 INFO L349 Elim1Store]: treesize reduction 46, result has 41.8 percent of original size [2023-11-23 20:33:35,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 148 treesize of output 107 [2023-11-23 20:33:35,831 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-23 20:33:35,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 102 [2023-11-23 20:33:35,940 INFO L349 Elim1Store]: treesize reduction 13, result has 38.1 percent of original size [2023-11-23 20:33:35,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 103 treesize of output 83 [2023-11-23 20:33:35,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 30 treesize of output 33 [2023-11-23 20:33:35,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 8 [2023-11-23 20:33:36,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:33:36,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:33:36,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:33:36,194 INFO L349 Elim1Store]: treesize reduction 80, result has 16.7 percent of original size [2023-11-23 20:33:36,195 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 89 [2023-11-23 20:33:36,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:33:36,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 8 [2023-11-23 20:33:55,094 WARN L293 SmtUtils]: Spent 18.59s on a formula simplification. DAG size of input: 87 DAG size of output: 46 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-23 20:33:55,095 INFO L349 Elim1Store]: treesize reduction 188, result has 37.1 percent of original size [2023-11-23 20:33:55,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 288 treesize of output 315 [2023-11-23 20:33:55,722 INFO L349 Elim1Store]: treesize reduction 62, result has 34.7 percent of original size [2023-11-23 20:33:55,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 24 treesize of output 41 [2023-11-23 20:33:56,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2023-11-23 20:33:56,164 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2023-11-23 20:33:57,497 INFO L349 Elim1Store]: treesize reduction 62, result has 34.7 percent of original size [2023-11-23 20:33:57,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 96