./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursified_nla-digbench/recursified_geo3-ll.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_9318a8c2-a8ee-4785-aeab-bfd3c1e216e8/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9318a8c2-a8ee-4785-aeab-bfd3c1e216e8/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_9318a8c2-a8ee-4785-aeab-bfd3c1e216e8/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9318a8c2-a8ee-4785-aeab-bfd3c1e216e8/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursified_nla-digbench/recursified_geo3-ll.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9318a8c2-a8ee-4785-aeab-bfd3c1e216e8/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_9318a8c2-a8ee-4785-aeab-bfd3c1e216e8/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 d611551bdd81171138955e09eec2c35a3c053022d643f86b25023a5ba282a01a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:33:14,600 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:33:14,734 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9318a8c2-a8ee-4785-aeab-bfd3c1e216e8/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 20:33:14,744 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:33:14,745 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:33:14,788 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:33:14,789 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:33:14,789 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:33:14,791 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:33:14,796 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:33:14,797 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:33:14,798 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:33:14,799 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:33:14,801 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 20:33:14,801 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:33:14,802 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:33:14,802 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 20:33:14,803 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 20:33:14,804 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:33:14,804 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 20:33:14,805 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 20:33:14,805 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 20:33:14,807 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:33:14,807 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:33:14,808 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 20:33:14,808 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:33:14,809 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 20:33:14,809 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:33:14,810 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:33:14,810 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:33:14,812 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:33:14,812 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 20:33:14,812 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:33:14,813 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:33:14,813 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:33:14,813 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 20:33:14,814 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:33:14,814 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:33:14,814 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:33:14,815 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:33:14,815 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:33:14,816 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 20:33:14,816 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:33:14,816 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:33:14,817 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:33:14,817 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:33:14,817 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:33:14,818 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_9318a8c2-a8ee-4785-aeab-bfd3c1e216e8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9318a8c2-a8ee-4785-aeab-bfd3c1e216e8/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d611551bdd81171138955e09eec2c35a3c053022d643f86b25023a5ba282a01a [2023-11-23 20:33:15,193 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:33:15,221 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:33:15,224 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:33:15,226 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:33:15,226 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:33:15,228 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9318a8c2-a8ee-4785-aeab-bfd3c1e216e8/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/recursified_nla-digbench/recursified_geo3-ll.c [2023-11-23 20:33:18,390 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:33:18,775 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:33:18,776 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9318a8c2-a8ee-4785-aeab-bfd3c1e216e8/sv-benchmarks/c/recursified_nla-digbench/recursified_geo3-ll.c [2023-11-23 20:33:18,786 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9318a8c2-a8ee-4785-aeab-bfd3c1e216e8/bin/utaipan-verify-mE87zJ7Ire/data/c98674aa0/e73c8f104f934a2ea79f899ea50228a9/FLAG1976a6a9d [2023-11-23 20:33:18,806 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9318a8c2-a8ee-4785-aeab-bfd3c1e216e8/bin/utaipan-verify-mE87zJ7Ire/data/c98674aa0/e73c8f104f934a2ea79f899ea50228a9 [2023-11-23 20:33:18,812 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:33:18,815 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:33:18,818 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:33:18,819 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:33:18,826 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:33:18,827 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:33:18" (1/1) ... [2023-11-23 20:33:18,828 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26ab4b58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:18, skipping insertion in model container [2023-11-23 20:33:18,829 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:33:18" (1/1) ... [2023-11-23 20:33:18,864 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:33:19,039 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_9318a8c2-a8ee-4785-aeab-bfd3c1e216e8/sv-benchmarks/c/recursified_nla-digbench/recursified_geo3-ll.c[1055,1068] [2023-11-23 20:33:19,079 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:33:19,093 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:33:19,113 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_9318a8c2-a8ee-4785-aeab-bfd3c1e216e8/sv-benchmarks/c/recursified_nla-digbench/recursified_geo3-ll.c[1055,1068] [2023-11-23 20:33:19,152 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:33:19,170 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:33:19,171 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:19 WrapperNode [2023-11-23 20:33:19,171 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:33:19,173 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:33:19,173 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:33:19,173 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:33:19,183 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:19" (1/1) ... [2023-11-23 20:33:19,206 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:19" (1/1) ... [2023-11-23 20:33:19,244 INFO L138 Inliner]: procedures = 16, calls = 66, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 84 [2023-11-23 20:33:19,244 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:33:19,245 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:33:19,245 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:33:19,246 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:33:19,257 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:19" (1/1) ... [2023-11-23 20:33:19,258 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:19" (1/1) ... [2023-11-23 20:33:19,274 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:19" (1/1) ... [2023-11-23 20:33:19,274 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:19" (1/1) ... [2023-11-23 20:33:19,290 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:19" (1/1) ... [2023-11-23 20:33:19,298 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:19" (1/1) ... [2023-11-23 20:33:19,299 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:19" (1/1) ... [2023-11-23 20:33:19,308 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:19" (1/1) ... [2023-11-23 20:33:19,311 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:33:19,315 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:33:19,315 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:33:19,315 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:33:19,316 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:19" (1/1) ... [2023-11-23 20:33:19,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:33:19,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9318a8c2-a8ee-4785-aeab-bfd3c1e216e8/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:33:19,356 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9318a8c2-a8ee-4785-aeab-bfd3c1e216e8/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 20:33:19,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9318a8c2-a8ee-4785-aeab-bfd3c1e216e8/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 20:33:19,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:33:19,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:33:19,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:33:19,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 20:33:19,398 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_30_to_38_0 [2023-11-23 20:33:19,398 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_30_to_38_0 [2023-11-23 20:33:19,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:33:19,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:33:19,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 20:33:19,399 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 20:33:19,399 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 20:33:19,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:33:19,483 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:33:19,485 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:33:19,742 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:33:19,792 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:33:19,792 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 20:33:19,804 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:33:19 BoogieIcfgContainer [2023-11-23 20:33:19,804 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:33:19,808 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 20:33:19,808 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 20:33:19,813 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 20:33:19,815 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:33:18" (1/3) ... [2023-11-23 20:33:19,817 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24ccdbd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:33:19, skipping insertion in model container [2023-11-23 20:33:19,817 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:19" (2/3) ... [2023-11-23 20:33:19,818 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24ccdbd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:33:19, skipping insertion in model container [2023-11-23 20:33:19,819 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:33:19" (3/3) ... [2023-11-23 20:33:19,821 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_geo3-ll.c [2023-11-23 20:33:19,847 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 20:33:19,848 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 20:33:19,925 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 20:33:19,934 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;@5275973c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 20:33:19,935 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 20:33:19,940 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 14 states have internal predecessors, (16), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-23 20:33:19,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-23 20:33:19,950 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:33:19,951 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:33:19,952 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:33:19,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:33:19,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1288934217, now seen corresponding path program 1 times [2023-11-23 20:33:19,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:33:19,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004101011] [2023-11-23 20:33:19,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:33:19,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:33:20,200 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 20:33:20,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1279182933] [2023-11-23 20:33:20,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:33:20,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:33:20,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9318a8c2-a8ee-4785-aeab-bfd3c1e216e8/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:33:20,217 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9318a8c2-a8ee-4785-aeab-bfd3c1e216e8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:33:20,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9318a8c2-a8ee-4785-aeab-bfd3c1e216e8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 20:33:20,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:33:20,620 WARN L260 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 101 conjunts are in the unsatisfiable core [2023-11-23 20:33:20,647 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:33:20,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:33:20,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:33:20,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:33:20,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:33:20,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:33:20,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:33:20,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:33:20,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:33:20,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:33:20,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:33:20,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:33:20,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:33:20,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:33:20,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:33:20,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:33:20,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:33:20,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:33:20,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:33:21,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:33:21,015 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 515 treesize of output 55 [2023-11-23 20:33:21,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:33:21,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:33:21,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:33:21,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:33:21,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:33:21,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:33:21,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:33:21,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:33:21,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:33:21,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:33:21,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:33:21,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:33:21,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:33:21,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:33:21,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:33:21,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:33:21,106 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 52 treesize of output 59 [2023-11-23 20:33:21,139 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 18 treesize of output 17 [2023-11-23 20:33:21,215 INFO L349 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-11-23 20:33:21,216 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 115 treesize of output 103 [2023-11-23 20:33:21,948 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 32 [2023-11-23 20:33:22,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:33:22,057 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:33:22,057 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:33:22,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004101011] [2023-11-23 20:33:22,057 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 20:33:22,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279182933] [2023-11-23 20:33:22,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279182933] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:33:22,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:33:22,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 20:33:22,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875658064] [2023-11-23 20:33:22,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:33:22,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 20:33:22,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:33:22,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 20:33:22,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-23 20:33:22,100 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 14 states have internal predecessors, (16), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 8 states, 6 states have (on average 1.0) internal successors, (6), 5 states have internal predecessors, (6), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:33:23,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:33:23,678 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2023-11-23 20:33:23,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 20:33:23,683 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.0) internal successors, (6), 5 states have internal predecessors, (6), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-23 20:33:23,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:33:23,693 INFO L225 Difference]: With dead ends: 52 [2023-11-23 20:33:23,694 INFO L226 Difference]: Without dead ends: 31 [2023-11-23 20:33:23,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-23 20:33:23,706 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 15 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-23 20:33:23,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 66 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-23 20:33:23,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-11-23 20:33:23,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2023-11-23 20:33:23,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 21 states have internal predecessors, (22), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-23 20:33:23,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2023-11-23 20:33:23,772 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 8 [2023-11-23 20:33:23,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:33:23,774 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2023-11-23 20:33:23,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.0) internal successors, (6), 5 states have internal predecessors, (6), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:33:23,774 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2023-11-23 20:33:23,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-23 20:33:23,776 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:33:23,777 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:33:23,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9318a8c2-a8ee-4785-aeab-bfd3c1e216e8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 20:33:23,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9318a8c2-a8ee-4785-aeab-bfd3c1e216e8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-23 20:33:23,996 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:33:23,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:33:23,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1531368910, now seen corresponding path program 1 times [2023-11-23 20:33:23,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:33:23,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583954847] [2023-11-23 20:33:23,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:33:23,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:33:24,081 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 20:33:24,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [891323533] [2023-11-23 20:33:24,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:33:24,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:33:24,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9318a8c2-a8ee-4785-aeab-bfd3c1e216e8/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:33:24,090 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9318a8c2-a8ee-4785-aeab-bfd3c1e216e8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:33:24,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9318a8c2-a8ee-4785-aeab-bfd3c1e216e8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 20:33:25,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:33:25,294 WARN L260 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 187 conjunts are in the unsatisfiable core [2023-11-23 20:33:25,307 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:33:25,385 INFO L349 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-11-23 20:33:25,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 115 treesize of output 103 [2023-11-23 20:33:25,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:33:25,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:33:25,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:33:25,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:33:25,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:33:25,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:33:25,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:33:25,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:33:25,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:33:25,557 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 21 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 1509 treesize of output 43 [2023-11-23 20:33:28,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:33:28,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:33:28,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:33:28,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:33:28,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:33:28,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:33:28,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 144 treesize of output 63 [2023-11-23 20:33:33,679 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 37 [2023-11-23 20:33:33,839 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:33:33,839 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 20:34:07,982 WARN L876 $PredicateComparison]: unable to prove that (or (let ((.cse4 (let ((.cse6 (store |c_#memory_int| |c_func_to_recursive_line_30_to_38_0_#in~c.base| (let ((.cse8 (select |c_#memory_int| |c_func_to_recursive_line_30_to_38_0_#in~c.base|))) (store .cse8 |c_func_to_recursive_line_30_to_38_0_#in~c.offset| (+ (select .cse8 |c_func_to_recursive_line_30_to_38_0_#in~c.offset|) 1)))))) (store .cse6 |c_func_to_recursive_line_30_to_38_0_#in~x.base| (let ((.cse7 (select .cse6 |c_func_to_recursive_line_30_to_38_0_#in~x.base|))) (store .cse7 |c_func_to_recursive_line_30_to_38_0_#in~x.offset| (+ (* (select (select .cse6 |c_func_to_recursive_line_30_to_38_0_#in~z.base|) |c_func_to_recursive_line_30_to_38_0_#in~z.offset|) (select .cse7 |c_func_to_recursive_line_30_to_38_0_#in~x.offset|)) (select (select .cse6 |c_func_to_recursive_line_30_to_38_0_#in~a.base|) |c_func_to_recursive_line_30_to_38_0_#in~a.offset|)))))))) (let ((.cse5 (select .cse4 |c_func_to_recursive_line_30_to_38_0_#in~y.base|))) (let ((.cse2 (select (select .cse4 |c_func_to_recursive_line_30_to_38_0_#in~z.base|) |c_func_to_recursive_line_30_to_38_0_#in~z.offset|)) (.cse3 (select .cse5 |c_func_to_recursive_line_30_to_38_0_#in~y.offset|))) (let ((.cse0 (store .cse4 |c_func_to_recursive_line_30_to_38_0_#in~y.base| (store .cse5 |c_func_to_recursive_line_30_to_38_0_#in~y.offset| (* .cse2 .cse3))))) (let ((.cse1 (select (select .cse0 |c_func_to_recursive_line_30_to_38_0_#in~x.base|) |c_func_to_recursive_line_30_to_38_0_#in~x.offset|))) (= (+ (select (select .cse0 |c_func_to_recursive_line_30_to_38_0_#in~a.base|) |c_func_to_recursive_line_30_to_38_0_#in~a.offset|) (* .cse1 (select (select .cse0 |c_func_to_recursive_line_30_to_38_0_#in~z.base|) |c_func_to_recursive_line_30_to_38_0_#in~z.offset|))) (+ .cse1 (* .cse2 .cse3 (select (select .cse0 |c_func_to_recursive_line_30_to_38_0_#in~az.base|) |c_func_to_recursive_line_30_to_38_0_#in~az.offset|))))))))) (not (let ((.cse9 (select (select |c_#memory_int| |c_func_to_recursive_line_30_to_38_0_#in~x.base|) |c_func_to_recursive_line_30_to_38_0_#in~x.offset|))) (= (+ (* (select (select |c_#memory_int| |c_func_to_recursive_line_30_to_38_0_#in~y.base|) |c_func_to_recursive_line_30_to_38_0_#in~y.offset|) (select (select |c_#memory_int| |c_func_to_recursive_line_30_to_38_0_#in~az.base|) |c_func_to_recursive_line_30_to_38_0_#in~az.offset|)) .cse9) (+ (select (select |c_#memory_int| |c_func_to_recursive_line_30_to_38_0_#in~a.base|) |c_func_to_recursive_line_30_to_38_0_#in~a.offset|) (* (select (select |c_#memory_int| |c_func_to_recursive_line_30_to_38_0_#in~z.base|) |c_func_to_recursive_line_30_to_38_0_#in~z.offset|) .cse9)))))) is different from true