./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursified_nla-digbench/recursified_geo1-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d62047-bf19-422c-a3b5-6c05634b676a/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d62047-bf19-422c-a3b5-6c05634b676a/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d62047-bf19-422c-a3b5-6c05634b676a/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d62047-bf19-422c-a3b5-6c05634b676a/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursified_nla-digbench/recursified_geo1-ll.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d62047-bf19-422c-a3b5-6c05634b676a/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d62047-bf19-422c-a3b5-6c05634b676a/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 79769f30a585389c0c487adad51d510f66c0d5e44d42ecf952985ceac89e1c25 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:20:29,492 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:20:29,605 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d62047-bf19-422c-a3b5-6c05634b676a/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-19 05:20:29,616 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:20:29,617 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:20:29,654 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:20:29,655 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:20:29,656 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:20:29,657 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:20:29,661 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:20:29,662 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:20:29,663 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:20:29,663 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:20:29,665 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:20:29,665 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:20:29,666 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:20:29,666 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:20:29,667 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:20:29,667 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:20:29,668 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:20:29,668 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:20:29,669 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:20:29,670 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:20:29,671 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:20:29,671 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:20:29,671 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:20:29,672 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:20:29,672 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:20:29,673 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:20:29,673 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:20:29,675 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:20:29,675 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 05:20:29,675 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:20:29,676 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:20:29,676 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:20:29,676 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:20:29,677 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:20:29,677 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:20:29,677 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:20:29,678 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:20:29,678 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:20:29,679 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:20:29,679 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:20:29,679 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:20:29,680 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:20:29,680 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:20:29,681 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:20:29,681 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_f1d62047-bf19-422c-a3b5-6c05634b676a/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d62047-bf19-422c-a3b5-6c05634b676a/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79769f30a585389c0c487adad51d510f66c0d5e44d42ecf952985ceac89e1c25 [2023-11-19 05:20:29,994 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:20:30,025 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:20:30,028 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:20:30,030 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:20:30,030 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:20:30,032 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d62047-bf19-422c-a3b5-6c05634b676a/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/recursified_nla-digbench/recursified_geo1-ll.c [2023-11-19 05:20:33,146 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:20:33,389 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:20:33,390 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d62047-bf19-422c-a3b5-6c05634b676a/sv-benchmarks/c/recursified_nla-digbench/recursified_geo1-ll.c [2023-11-19 05:20:33,402 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d62047-bf19-422c-a3b5-6c05634b676a/bin/utaipan-verify-t7M7D8N6sZ/data/35f71c71a/34faa9d0f83d4ddea2315783169b8b93/FLAG000add753 [2023-11-19 05:20:33,417 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d62047-bf19-422c-a3b5-6c05634b676a/bin/utaipan-verify-t7M7D8N6sZ/data/35f71c71a/34faa9d0f83d4ddea2315783169b8b93 [2023-11-19 05:20:33,419 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:20:33,421 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:20:33,422 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:20:33,423 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:20:33,434 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:20:33,435 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:20:33" (1/1) ... [2023-11-19 05:20:33,436 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e4c3a88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:33, skipping insertion in model container [2023-11-19 05:20:33,436 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:20:33" (1/1) ... [2023-11-19 05:20:33,461 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:20:33,656 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:20:33,671 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:20:33,701 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:20:33,723 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:20:33,724 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:33 WrapperNode [2023-11-19 05:20:33,724 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:20:33,725 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:20:33,726 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:20:33,726 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:20:33,735 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:33" (1/1) ... [2023-11-19 05:20:33,759 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:33" (1/1) ... [2023-11-19 05:20:33,781 INFO L138 Inliner]: procedures = 16, calls = 56, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 80 [2023-11-19 05:20:33,781 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:20:33,782 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:20:33,782 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:20:33,783 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:20:33,792 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:33" (1/1) ... [2023-11-19 05:20:33,793 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:33" (1/1) ... [2023-11-19 05:20:33,796 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:33" (1/1) ... [2023-11-19 05:20:33,796 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:33" (1/1) ... [2023-11-19 05:20:33,804 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:33" (1/1) ... [2023-11-19 05:20:33,806 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:33" (1/1) ... [2023-11-19 05:20:33,818 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:33" (1/1) ... [2023-11-19 05:20:33,820 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:33" (1/1) ... [2023-11-19 05:20:33,823 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:20:33,824 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:20:33,824 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:20:33,824 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:20:33,826 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:33" (1/1) ... [2023-11-19 05:20:33,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:20:33,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d62047-bf19-422c-a3b5-6c05634b676a/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:20:33,877 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d62047-bf19-422c-a3b5-6c05634b676a/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:20:33,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d62047-bf19-422c-a3b5-6c05634b676a/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:20:33,922 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:20:33,922 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 05:20:33,922 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 05:20:33,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:20:33,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:20:33,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 05:20:33,923 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_30_to_38_0 [2023-11-19 05:20:33,923 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_30_to_38_0 [2023-11-19 05:20:33,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:20:33,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:20:33,924 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 05:20:33,924 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 05:20:33,924 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 05:20:33,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:20:34,011 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:20:34,013 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:20:34,352 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:20:34,426 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:20:34,426 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 05:20:34,432 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:20:34 BoogieIcfgContainer [2023-11-19 05:20:34,432 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:20:34,439 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:20:34,440 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:20:34,443 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:20:34,443 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:20:33" (1/3) ... [2023-11-19 05:20:34,444 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3df7ab4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:20:34, skipping insertion in model container [2023-11-19 05:20:34,444 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:33" (2/3) ... [2023-11-19 05:20:34,445 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3df7ab4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:20:34, skipping insertion in model container [2023-11-19 05:20:34,445 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:20:34" (3/3) ... [2023-11-19 05:20:34,446 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_geo1-ll.c [2023-11-19 05:20:34,470 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:20:34,470 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2023-11-19 05:20:34,524 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:20:34,534 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;@2c9cc495, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:20:34,534 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2023-11-19 05:20:34,540 INFO L276 IsEmpty]: Start isEmpty. Operand has 70 states, 36 states have (on average 1.7222222222222223) internal successors, (62), 61 states have internal predecessors, (62), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 05:20:34,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-19 05:20:34,549 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:20:34,550 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:20:34,551 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-19 05:20:34,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:20:34,562 INFO L85 PathProgramCache]: Analyzing trace with hash 617122268, now seen corresponding path program 1 times [2023-11-19 05:20:34,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:20:34,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508163252] [2023-11-19 05:20:34,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:20:34,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:20:34,790 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:20:34,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [378989511] [2023-11-19 05:20:34,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:20:34,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:20:34,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d62047-bf19-422c-a3b5-6c05634b676a/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:20:34,795 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d62047-bf19-422c-a3b5-6c05634b676a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:20:34,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d62047-bf19-422c-a3b5-6c05634b676a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 05:20:34,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:20:34,988 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-19 05:20:34,997 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:20:35,116 INFO L349 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2023-11-19 05:20:35,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 61 treesize of output 53 [2023-11-19 05:20:35,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2023-11-19 05:20:35,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 8 treesize of output 1 [2023-11-19 05:20:35,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 31 [2023-11-19 05:20:35,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 21 [2023-11-19 05:20:35,472 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-11-19 05:20:35,489 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:20:35,489 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:20:35,768 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_51 (Array Int Int)) (|ULTIMATE.start_main_~#x~0#1.offset| Int) (|v_func_to_recursive_line_30_to_38_0_#t~mem5_21| Int) (v_ArrVal_49 (Array Int Int)) (|v_func_to_recursive_line_30_to_38_0_#t~mem4_21| Int)) (let ((.cse0 (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#x~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#x~0#1.base|) |ULTIMATE.start_main_~#x~0#1.offset| 1)) |c_ULTIMATE.start_main_~#y~0#1.base| v_ArrVal_51) |c_ULTIMATE.start_main_~#c~0#1.base| v_ArrVal_49))) (or (< 0 (+ (* |v_func_to_recursive_line_30_to_38_0_#t~mem4_21| |v_func_to_recursive_line_30_to_38_0_#t~mem5_21|) 9223372036854775809)) (< |v_func_to_recursive_line_30_to_38_0_#t~mem5_21| (select (select .cse0 |c_ULTIMATE.start_main_~#z~0#1.base|) |c_ULTIMATE.start_main_~#z~0#1.offset|)) (< |v_func_to_recursive_line_30_to_38_0_#t~mem4_21| (select (select .cse0 |c_ULTIMATE.start_main_~#x~0#1.base|) |ULTIMATE.start_main_~#x~0#1.offset|))))) is different from false [2023-11-19 05:20:35,809 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:20:35,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508163252] [2023-11-19 05:20:35,810 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:20:35,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378989511] [2023-11-19 05:20:35,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378989511] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:20:35,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [767937857] [2023-11-19 05:20:35,837 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2023-11-19 05:20:35,838 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:20:35,842 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:20:35,848 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:20:35,848 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:20:37,081 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 170 for LOIs [2023-11-19 05:20:37,233 INFO L197 IcfgInterpreter]: Interpreting procedure func_to_recursive_line_30_to_38_0 with input of size 126 for LOIs [2023-11-19 05:20:37,428 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:20:58,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [767937857] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:20:58,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:20:58,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9] total 19 [2023-11-19 05:20:58,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213183827] [2023-11-19 05:20:58,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:20:58,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 05:20:58,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:20:58,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 05:20:58,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=459, Unknown=6, NotChecked=44, Total=600 [2023-11-19 05:20:58,205 INFO L87 Difference]: Start difference. First operand has 70 states, 36 states have (on average 1.7222222222222223) internal successors, (62), 61 states have internal predecessors, (62), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 12 states, 7 states have (on average 1.0) internal successors, (7), 7 states have internal predecessors, (7), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 05:21:00,263 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-19 05:21:02,873 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-19 05:21:05,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-19 05:21:10,586 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-19 05:21:12,802 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-19 05:21:12,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:21:12,835 INFO L93 Difference]: Finished difference Result 130 states and 137 transitions. [2023-11-19 05:21:12,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 05:21:12,837 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 7 states have (on average 1.0) internal successors, (7), 7 states have internal predecessors, (7), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 13 [2023-11-19 05:21:12,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:21:12,846 INFO L225 Difference]: With dead ends: 130 [2023-11-19 05:21:12,846 INFO L226 Difference]: Without dead ends: 101 [2023-11-19 05:21:12,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 21.0s TimeCoverageRelationStatistics Valid=91, Invalid=459, Unknown=6, NotChecked=44, Total=600 [2023-11-19 05:21:12,853 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 50 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 3 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.6s IncrementalHoareTripleChecker+Time [2023-11-19 05:21:12,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 269 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 241 Invalid, 5 Unknown, 0 Unchecked, 14.6s Time] [2023-11-19 05:21:12,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-11-19 05:21:12,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 82. [2023-11-19 05:21:12,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 48 states have (on average 1.6458333333333333) internal successors, (79), 72 states have internal predecessors, (79), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2023-11-19 05:21:12,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 92 transitions. [2023-11-19 05:21:12,905 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 92 transitions. Word has length 13 [2023-11-19 05:21:12,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:21:12,905 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 92 transitions. [2023-11-19 05:21:12,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 7 states have (on average 1.0) internal successors, (7), 7 states have internal predecessors, (7), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 05:21:12,906 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 92 transitions. [2023-11-19 05:21:12,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-19 05:21:12,908 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:12,908 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:21:12,929 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d62047-bf19-422c-a3b5-6c05634b676a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 05:21:13,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d62047-bf19-422c-a3b5-6c05634b676a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-19 05:21:13,113 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_30_to_38_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-19 05:21:13,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:13,114 INFO L85 PathProgramCache]: Analyzing trace with hash 349013886, now seen corresponding path program 1 times [2023-11-19 05:21:13,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:21:13,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283382612] [2023-11-19 05:21:13,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:13,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:21:13,146 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:21:13,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1416538248] [2023-11-19 05:21:13,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:13,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:21:13,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d62047-bf19-422c-a3b5-6c05634b676a/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:21:13,148 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d62047-bf19-422c-a3b5-6c05634b676a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:21:13,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d62047-bf19-422c-a3b5-6c05634b676a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 05:21:13,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:13,256 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-19 05:21:13,263 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:21:13,321 INFO L349 Elim1Store]: treesize reduction 41, result has 16.3 percent of original size [2023-11-19 05:21:13,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 258 treesize of output 256 [2023-11-19 05:21:13,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2023-11-19 05:21:13,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-19 05:21:13,714 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-11-19 05:21:13,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2023-11-19 05:21:13,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2023-11-19 05:21:13,757 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 23 [2023-11-19 05:21:13,945 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-11-19 05:21:13,979 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:21:13,979 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:21:14,151 WARN L854 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~#x~0#1.offset| Int) (v_ArrVal_98 (Array Int Int)) (v_ArrVal_100 (Array Int Int))) (let ((.cse1 (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#x~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#x~0#1.base|) |ULTIMATE.start_main_~#x~0#1.offset| 1)) |c_ULTIMATE.start_main_~#y~0#1.base| v_ArrVal_100) |c_ULTIMATE.start_main_~#c~0#1.base| v_ArrVal_98))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~#x~0#1.base|) |ULTIMATE.start_main_~#x~0#1.offset|))) (< .cse0 (+ (* .cse0 (select (select .cse1 |c_ULTIMATE.start_main_~#z~0#1.base|) |c_ULTIMATE.start_main_~#z~0#1.offset|)) 9223372036854775809))))) is different from false [2023-11-19 05:21:14,164 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:21:14,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283382612] [2023-11-19 05:21:14,164 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:21:14,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416538248] [2023-11-19 05:21:14,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416538248] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:21:14,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1804432459] [2023-11-19 05:21:14,168 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2023-11-19 05:21:14,168 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:21:14,169 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:21:14,169 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:21:14,169 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:21:14,848 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 170 for LOIs [2023-11-19 05:21:14,983 INFO L197 IcfgInterpreter]: Interpreting procedure func_to_recursive_line_30_to_38_0 with input of size 126 for LOIs [2023-11-19 05:21:15,247 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:21:35,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1804432459] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:21:35,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:21:35,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [8] total 20 [2023-11-19 05:21:35,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663860251] [2023-11-19 05:21:35,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:21:35,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 05:21:35,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:21:35,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 05:21:35,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=579, Unknown=4, NotChecked=50, Total=756 [2023-11-19 05:21:35,460 INFO L87 Difference]: Start difference. First operand 82 states and 92 transitions. Second operand has 14 states, 9 states have (on average 1.0) internal successors, (9), 9 states have internal predecessors, (9), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)