./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursified_nla-digbench/recursified_geo3-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff 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_3217e0e4-8d47-439b-801d-a073290c0672/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3217e0e4-8d47-439b-801d-a073290c0672/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_3217e0e4-8d47-439b-801d-a073290c0672/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3217e0e4-8d47-439b-801d-a073290c0672/bin/utaipan-verify-t7M7D8N6sZ/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_3217e0e4-8d47-439b-801d-a073290c0672/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_3217e0e4-8d47-439b-801d-a073290c0672/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 d611551bdd81171138955e09eec2c35a3c053022d643f86b25023a5ba282a01a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:13:24,217 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:13:24,334 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3217e0e4-8d47-439b-801d-a073290c0672/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-19 04:13:24,339 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:13:24,340 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:13:24,370 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:13:24,371 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:13:24,372 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:13:24,373 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:13:24,373 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:13:24,374 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:13:24,375 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:13:24,376 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:13:24,376 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:13:24,377 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:13:24,378 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:13:24,378 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:13:24,379 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:13:24,380 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:13:24,380 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:13:24,381 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:13:24,382 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:13:24,383 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:13:24,384 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:13:24,384 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:13:24,385 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:13:24,386 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:13:24,386 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:13:24,387 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:13:24,388 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:13:24,388 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:13:24,389 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 04:13:24,390 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:13:24,390 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:13:24,391 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:13:24,392 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:13:24,392 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:13:24,393 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:13:24,394 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:13:24,394 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:13:24,395 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:13:24,396 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:13:24,396 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:13:24,397 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:13:24,397 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:13:24,398 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:13:24,399 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:13:24,399 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_3217e0e4-8d47-439b-801d-a073290c0672/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3217e0e4-8d47-439b-801d-a073290c0672/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d611551bdd81171138955e09eec2c35a3c053022d643f86b25023a5ba282a01a [2023-11-19 04:13:24,718 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:13:24,753 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:13:24,756 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:13:24,758 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:13:24,758 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:13:24,760 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3217e0e4-8d47-439b-801d-a073290c0672/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/recursified_nla-digbench/recursified_geo3-ll.c [2023-11-19 04:13:28,355 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:13:28,639 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:13:28,639 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3217e0e4-8d47-439b-801d-a073290c0672/sv-benchmarks/c/recursified_nla-digbench/recursified_geo3-ll.c [2023-11-19 04:13:28,649 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3217e0e4-8d47-439b-801d-a073290c0672/bin/utaipan-verify-t7M7D8N6sZ/data/3242ed28f/eb4a3153e01d420da5f4c391c3f191d5/FLAG4986e9640 [2023-11-19 04:13:28,667 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3217e0e4-8d47-439b-801d-a073290c0672/bin/utaipan-verify-t7M7D8N6sZ/data/3242ed28f/eb4a3153e01d420da5f4c391c3f191d5 [2023-11-19 04:13:28,677 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:13:28,679 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:13:28,682 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:13:28,682 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:13:28,689 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:13:28,693 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:13:28" (1/1) ... [2023-11-19 04:13:28,695 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ac8e319 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:28, skipping insertion in model container [2023-11-19 04:13:28,695 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:13:28" (1/1) ... [2023-11-19 04:13:28,726 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:13:28,944 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:13:28,969 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:13:28,999 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:13:29,015 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:13:29,015 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:29 WrapperNode [2023-11-19 04:13:29,015 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:13:29,017 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:13:29,017 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:13:29,017 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:13:29,026 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:29" (1/1) ... [2023-11-19 04:13:29,039 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:29" (1/1) ... [2023-11-19 04:13:29,062 INFO L138 Inliner]: procedures = 16, calls = 67, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 102 [2023-11-19 04:13:29,062 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:13:29,063 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:13:29,063 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:13:29,063 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:13:29,073 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:29" (1/1) ... [2023-11-19 04:13:29,073 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:29" (1/1) ... [2023-11-19 04:13:29,078 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:29" (1/1) ... [2023-11-19 04:13:29,078 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:29" (1/1) ... [2023-11-19 04:13:29,086 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:29" (1/1) ... [2023-11-19 04:13:29,089 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:29" (1/1) ... [2023-11-19 04:13:29,091 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:29" (1/1) ... [2023-11-19 04:13:29,093 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:29" (1/1) ... [2023-11-19 04:13:29,096 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:13:29,097 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:13:29,098 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:13:29,098 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:13:29,099 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:29" (1/1) ... [2023-11-19 04:13:29,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:13:29,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3217e0e4-8d47-439b-801d-a073290c0672/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:13:29,138 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3217e0e4-8d47-439b-801d-a073290c0672/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:13:29,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3217e0e4-8d47-439b-801d-a073290c0672/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:13:29,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:13:29,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:13:29,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:13:29,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 04:13:29,184 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_30_to_38_0 [2023-11-19 04:13:29,184 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_30_to_38_0 [2023-11-19 04:13:29,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:13:29,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:13:29,185 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 04:13:29,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 04:13:29,185 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 04:13:29,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:13:29,282 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:13:29,284 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:13:29,811 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:13:29,860 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:13:29,860 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 04:13:29,866 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:13:29 BoogieIcfgContainer [2023-11-19 04:13:29,866 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:13:29,895 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:13:29,895 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:13:29,901 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:13:29,902 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:13:28" (1/3) ... [2023-11-19 04:13:29,903 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76542905 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:13:29, skipping insertion in model container [2023-11-19 04:13:29,903 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:29" (2/3) ... [2023-11-19 04:13:29,903 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76542905 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:13:29, skipping insertion in model container [2023-11-19 04:13:29,903 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:13:29" (3/3) ... [2023-11-19 04:13:29,905 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_geo3-ll.c [2023-11-19 04:13:29,943 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:13:29,943 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2023-11-19 04:13:30,008 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:13:30,017 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;@4e1efeae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:13:30,018 INFO L358 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2023-11-19 04:13:30,023 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 39 states have (on average 1.8205128205128205) internal successors, (71), 70 states have internal predecessors, (71), 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) [2023-11-19 04:13:30,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-19 04:13:30,030 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:13:30,030 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-19 04:13:30,031 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2023-11-19 04:13:30,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:13:30,037 INFO L85 PathProgramCache]: Analyzing trace with hash 4363, now seen corresponding path program 1 times [2023-11-19 04:13:30,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:13:30,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953525531] [2023-11-19 04:13:30,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:13:30,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:13:30,326 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:13:30,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [234293121] [2023-11-19 04:13:30,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:13:30,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:13:30,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3217e0e4-8d47-439b-801d-a073290c0672/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:13:30,331 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3217e0e4-8d47-439b-801d-a073290c0672/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:13:30,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3217e0e4-8d47-439b-801d-a073290c0672/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 04:13:30,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:13:30,537 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-19 04:13:30,547 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:13:30,927 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-19 04:13:30,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:31,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 38 [2023-11-19 04:13:31,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:31,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:31,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:31,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:31,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:31,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:31,111 INFO L349 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2023-11-19 04:13:31,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 62 treesize of output 52 [2023-11-19 04:13:31,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:31,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:31,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:31,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:31,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:31,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:31,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:31,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:31,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:31,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:31,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:31,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:31,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:31,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:31,208 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 9 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 23 [2023-11-19 04:13:31,307 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-19 04:13:31,367 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-19 04:13:31,456 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-19 04:13:31,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:13:31,479 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:13:31,481 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:13:31,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953525531] [2023-11-19 04:13:31,481 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:13:31,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234293121] [2023-11-19 04:13:31,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234293121] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:13:31,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:13:31,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 04:13:31,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947779684] [2023-11-19 04:13:31,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:13:31,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:13:31,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:13:31,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:13:31,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:13:31,549 INFO L87 Difference]: Start difference. First operand has 76 states, 39 states have (on average 1.8205128205128205) internal successors, (71), 70 states have internal predecessors, (71), 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 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:13:31,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:13:31,630 INFO L93 Difference]: Finished difference Result 104 states and 107 transitions. [2023-11-19 04:13:31,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:13:31,633 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2023-11-19 04:13:31,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:13:31,644 INFO L225 Difference]: With dead ends: 104 [2023-11-19 04:13:31,645 INFO L226 Difference]: Without dead ends: 71 [2023-11-19 04:13:31,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:13:31,653 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 1 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:13:31,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 142 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:13:31,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-11-19 04:13:31,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2023-11-19 04:13:31,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 38 states have (on average 1.736842105263158) internal successors, (66), 66 states have internal predecessors, (66), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 04:13:31,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2023-11-19 04:13:31,700 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 2 [2023-11-19 04:13:31,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:13:31,701 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2023-11-19 04:13:31,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:13:31,702 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2023-11-19 04:13:31,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 04:13:31,702 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:13:31,702 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:13:31,722 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3217e0e4-8d47-439b-801d-a073290c0672/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 04:13:31,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3217e0e4-8d47-439b-801d-a073290c0672/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-19 04:13:31,910 INFO L420 AbstractCegarLoop]: === Iteration 2 === 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 28 more)] === [2023-11-19 04:13:31,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:13:31,911 INFO L85 PathProgramCache]: Analyzing trace with hash 439213065, now seen corresponding path program 1 times [2023-11-19 04:13:31,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:13:31,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046921114] [2023-11-19 04:13:31,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:13:31,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:13:32,012 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:13:32,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [197922770] [2023-11-19 04:13:32,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:13:32,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:13:32,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3217e0e4-8d47-439b-801d-a073290c0672/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:13:32,015 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3217e0e4-8d47-439b-801d-a073290c0672/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:13:32,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3217e0e4-8d47-439b-801d-a073290c0672/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 04:13:32,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:13:32,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 61 conjunts are in the unsatisfiable core [2023-11-19 04:13:32,211 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:13:32,291 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:13:32,292 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:13:32,293 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:13:32,298 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-19 04:13:32,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:32,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:32,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:32,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:32,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:32,358 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 80 [2023-11-19 04:13:32,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:32,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:32,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:32,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:32,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:32,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:32,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:32,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:32,487 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:13:32,492 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-19 04:13:32,507 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:13:32,511 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-19 04:13:32,528 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:13:32,533 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-19 04:13:32,578 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:13:32,579 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:13:32,583 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-19 04:13:32,595 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:13:32,596 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:13:32,601 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-19 04:13:32,618 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:13:32,619 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:13:32,625 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-19 04:13:32,686 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:13:32,687 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:13:32,693 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-19 04:13:32,712 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:13:32,713 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:13:32,718 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-19 04:13:32,729 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:13:32,730 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:13:32,736 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-19 04:13:32,750 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:13:32,751 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:13:32,756 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-19 04:13:32,792 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:13:32,793 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:13:32,799 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-19 04:13:32,812 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:13:32,813 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:13:32,818 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-19 04:13:32,835 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:13:32,836 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:13:32,841 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-19 04:13:32,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:32,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:32,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:32,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:32,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:32,932 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 15 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 29 [2023-11-19 04:13:32,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-11-19 04:13:32,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:32,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:32,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:32,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:32,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:32,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:32,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:32,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:32,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:32,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:32,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:32,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:32,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:32,987 INFO L349 Elim1Store]: treesize reduction 56, result has 1.8 percent of original size [2023-11-19 04:13:32,988 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 13 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 63 treesize of output 51 [2023-11-19 04:13:33,005 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 10 treesize of output 9 [2023-11-19 04:13:33,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2023-11-19 04:13:33,059 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:13:33,060 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:13:33,066 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-19 04:13:33,080 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:13:33,081 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:13:33,087 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-19 04:13:33,111 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:13:33,112 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:13:33,118 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-19 04:13:33,137 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:13:33,138 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:13:33,139 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:13:33,144 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-19 04:13:33,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 34 [2023-11-19 04:13:33,536 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 17 [2023-11-19 04:13:33,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:13:33,562 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:13:33,562 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:13:33,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046921114] [2023-11-19 04:13:33,562 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:13:33,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197922770] [2023-11-19 04:13:33,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197922770] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:13:33,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:13:33,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 04:13:33,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717780699] [2023-11-19 04:13:33,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:13:33,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 04:13:33,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:13:33,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 04:13:33,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-19 04:13:33,567 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand has 8 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:13:34,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:13:34,689 INFO L93 Difference]: Finished difference Result 123 states and 125 transitions. [2023-11-19 04:13:34,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 04:13:34,690 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-19 04:13:34,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:13:34,693 INFO L225 Difference]: With dead ends: 123 [2023-11-19 04:13:34,693 INFO L226 Difference]: Without dead ends: 122 [2023-11-19 04:13:34,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-19 04:13:34,695 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 113 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-19 04:13:34,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 268 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-19 04:13:34,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2023-11-19 04:13:34,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 88. [2023-11-19 04:13:34,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 53 states have (on average 1.7169811320754718) internal successors, (91), 81 states have internal predecessors, (91), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-19 04:13:34,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 100 transitions. [2023-11-19 04:13:34,731 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 100 transitions. Word has length 7 [2023-11-19 04:13:34,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:13:34,731 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 100 transitions. [2023-11-19 04:13:34,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:13:34,732 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 100 transitions. [2023-11-19 04:13:34,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 04:13:34,732 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:13:34,732 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:13:34,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3217e0e4-8d47-439b-801d-a073290c0672/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 04:13:34,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3217e0e4-8d47-439b-801d-a073290c0672/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:13:34,941 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2023-11-19 04:13:34,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:13:34,941 INFO L85 PathProgramCache]: Analyzing trace with hash 730703164, now seen corresponding path program 1 times [2023-11-19 04:13:34,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:13:34,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613671830] [2023-11-19 04:13:34,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:13:34,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:13:35,010 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:13:35,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [754016397] [2023-11-19 04:13:35,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:13:35,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:13:35,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3217e0e4-8d47-439b-801d-a073290c0672/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:13:35,016 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3217e0e4-8d47-439b-801d-a073290c0672/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:13:35,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3217e0e4-8d47-439b-801d-a073290c0672/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 04:13:35,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:13:35,188 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 59 conjunts are in the unsatisfiable core [2023-11-19 04:13:35,194 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:13:35,236 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:13:35,237 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:13:35,238 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:13:35,242 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-19 04:13:35,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:35,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:35,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:35,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:35,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:35,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 80 [2023-11-19 04:13:35,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:35,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:35,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:35,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:35,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:35,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:35,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:35,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:35,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:35,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:35,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:35,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:35,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:35,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:35,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:35,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:35,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:35,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 15 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 35 [2023-11-19 04:13:35,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-11-19 04:13:35,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:35,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:35,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:35,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:35,465 INFO L349 Elim1Store]: treesize reduction 88, result has 1.1 percent of original size [2023-11-19 04:13:35,466 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 99 treesize of output 87 [2023-11-19 04:13:35,486 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-11-19 04:13:35,494 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 12 treesize of output 11 [2023-11-19 04:13:35,531 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:13:35,532 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:13:35,533 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:13:35,537 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-19 04:13:35,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 32 [2023-11-19 04:13:35,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 15 [2023-11-19 04:13:35,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:13:35,841 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:13:35,842 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:13:35,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613671830] [2023-11-19 04:13:35,842 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:13:35,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754016397] [2023-11-19 04:13:35,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [754016397] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:13:35,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:13:35,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 04:13:35,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657551505] [2023-11-19 04:13:35,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:13:35,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 04:13:35,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:13:35,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 04:13:35,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 04:13:35,845 INFO L87 Difference]: Start difference. First operand 88 states and 100 transitions. Second operand has 7 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:13:37,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:13:37,258 INFO L93 Difference]: Finished difference Result 122 states and 124 transitions. [2023-11-19 04:13:37,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 04:13:37,259 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-19 04:13:37,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:13:37,260 INFO L225 Difference]: With dead ends: 122 [2023-11-19 04:13:37,260 INFO L226 Difference]: Without dead ends: 121 [2023-11-19 04:13:37,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-19 04:13:37,262 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 107 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-19 04:13:37,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 236 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-19 04:13:37,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-11-19 04:13:37,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 88. [2023-11-19 04:13:37,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 53 states have (on average 1.6981132075471699) internal successors, (90), 81 states have internal predecessors, (90), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-19 04:13:37,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 99 transitions. [2023-11-19 04:13:37,278 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 99 transitions. Word has length 8 [2023-11-19 04:13:37,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:13:37,278 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 99 transitions. [2023-11-19 04:13:37,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:13:37,279 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 99 transitions. [2023-11-19 04:13:37,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 04:13:37,279 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:13:37,280 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:13:37,308 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3217e0e4-8d47-439b-801d-a073290c0672/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 04:13:37,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3217e0e4-8d47-439b-801d-a073290c0672/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:13:37,501 INFO L420 AbstractCegarLoop]: === Iteration 4 === 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 28 more)] === [2023-11-19 04:13:37,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:13:37,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1176961643, now seen corresponding path program 1 times [2023-11-19 04:13:37,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:13:37,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217571327] [2023-11-19 04:13:37,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:13:37,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:13:37,567 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:13:37,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1112883381] [2023-11-19 04:13:37,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:13:37,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:13:37,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3217e0e4-8d47-439b-801d-a073290c0672/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:13:37,581 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3217e0e4-8d47-439b-801d-a073290c0672/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:13:37,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3217e0e4-8d47-439b-801d-a073290c0672/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 04:13:37,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:13:37,731 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 62 conjunts are in the unsatisfiable core [2023-11-19 04:13:37,736 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:13:37,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:37,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:37,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:37,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:37,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:37,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:37,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:37,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:37,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 133 treesize of output 42 [2023-11-19 04:13:37,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:37,870 INFO L349 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2023-11-19 04:13:37,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 111 treesize of output 99 [2023-11-19 04:13:37,915 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 15 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 47 [2023-11-19 04:13:38,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 47 [2023-11-19 04:13:38,446 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 29 [2023-11-19 04:13:38,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:13:38,488 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:13:38,488 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:13:38,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217571327] [2023-11-19 04:13:38,489 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:13:38,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112883381] [2023-11-19 04:13:38,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112883381] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:13:38,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:13:38,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 04:13:38,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904154812] [2023-11-19 04:13:38,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:13:38,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 04:13:38,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:13:38,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 04:13:38,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-19 04:13:38,492 INFO L87 Difference]: Start difference. First operand 88 states and 99 transitions. Second operand has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:13:39,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:13:39,427 INFO L93 Difference]: Finished difference Result 121 states and 123 transitions. [2023-11-19 04:13:39,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 04:13:39,428 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-19 04:13:39,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:13:39,429 INFO L225 Difference]: With dead ends: 121 [2023-11-19 04:13:39,429 INFO L226 Difference]: Without dead ends: 119 [2023-11-19 04:13:39,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-11-19 04:13:39,431 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 98 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 04:13:39,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 309 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 04:13:39,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2023-11-19 04:13:39,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 88. [2023-11-19 04:13:39,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 53 states have (on average 1.6603773584905661) internal successors, (88), 81 states have internal predecessors, (88), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-19 04:13:39,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 97 transitions. [2023-11-19 04:13:39,454 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 97 transitions. Word has length 9 [2023-11-19 04:13:39,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:13:39,454 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 97 transitions. [2023-11-19 04:13:39,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:13:39,455 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 97 transitions. [2023-11-19 04:13:39,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 04:13:39,456 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:13:39,456 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:13:39,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3217e0e4-8d47-439b-801d-a073290c0672/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 04:13:39,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3217e0e4-8d47-439b-801d-a073290c0672/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:13:39,680 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_30_to_38_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2023-11-19 04:13:39,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:13:39,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1483741389, now seen corresponding path program 1 times [2023-11-19 04:13:39,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:13:39,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382952487] [2023-11-19 04:13:39,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:13:39,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:13:39,753 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:13:39,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1070173148] [2023-11-19 04:13:39,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:13:39,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:13:39,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3217e0e4-8d47-439b-801d-a073290c0672/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:13:39,765 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3217e0e4-8d47-439b-801d-a073290c0672/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:13:39,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3217e0e4-8d47-439b-801d-a073290c0672/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 04:13:39,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:13:39,923 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 50 conjunts are in the unsatisfiable core [2023-11-19 04:13:39,928 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:13:39,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:39,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:39,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:39,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:39,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:39,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:39,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:39,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:39,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:39,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:39,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:39,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:40,000 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 256 treesize of output 44 [2023-11-19 04:13:40,070 INFO L349 Elim1Store]: treesize reduction 114, result has 5.8 percent of original size [2023-11-19 04:13:40,071 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 1169 treesize of output 1159 [2023-11-19 04:13:40,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:40,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:40,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 9 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2023-11-19 04:13:41,422 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 20 treesize of output 18 [2023-11-19 04:13:41,590 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 26 treesize of output 10 [2023-11-19 04:13:41,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:13:41,616 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:13:41,616 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:13:41,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382952487] [2023-11-19 04:13:41,617 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:13:41,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070173148] [2023-11-19 04:13:41,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070173148] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:13:41,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:13:41,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 04:13:41,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20849105] [2023-11-19 04:13:41,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:13:41,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 04:13:41,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:13:41,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 04:13:41,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-19 04:13:41,620 INFO L87 Difference]: Start difference. First operand 88 states and 97 transitions. Second operand has 9 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:13:42,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:13:42,095 INFO L93 Difference]: Finished difference Result 119 states and 121 transitions. [2023-11-19 04:13:42,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 04:13:42,096 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-19 04:13:42,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:13:42,098 INFO L225 Difference]: With dead ends: 119 [2023-11-19 04:13:42,098 INFO L226 Difference]: Without dead ends: 118 [2023-11-19 04:13:42,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2023-11-19 04:13:42,099 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 108 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:13:42,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 311 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:13:42,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2023-11-19 04:13:42,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 88. [2023-11-19 04:13:42,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 53 states have (on average 1.6415094339622642) internal successors, (87), 81 states have internal predecessors, (87), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-19 04:13:42,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 96 transitions. [2023-11-19 04:13:42,118 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 96 transitions. Word has length 11 [2023-11-19 04:13:42,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:13:42,118 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 96 transitions. [2023-11-19 04:13:42,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:13:42,119 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 96 transitions. [2023-11-19 04:13:42,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-19 04:13:42,119 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:13:42,120 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:13:42,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3217e0e4-8d47-439b-801d-a073290c0672/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 04:13:42,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3217e0e4-8d47-439b-801d-a073290c0672/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:13:42,341 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_30_to_38_0Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2023-11-19 04:13:42,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:13:42,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1248657152, now seen corresponding path program 1 times [2023-11-19 04:13:42,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:13:42,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843604901] [2023-11-19 04:13:42,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:13:42,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:13:42,370 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:13:42,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1008588646] [2023-11-19 04:13:42,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:13:42,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:13:42,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3217e0e4-8d47-439b-801d-a073290c0672/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:13:42,372 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3217e0e4-8d47-439b-801d-a073290c0672/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:13:42,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3217e0e4-8d47-439b-801d-a073290c0672/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 04:13:42,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:13:42,520 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-19 04:13:42,526 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:13:42,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:42,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:42,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:42,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:42,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:42,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:42,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:42,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:42,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:43,305 INFO L349 Elim1Store]: treesize reduction 368, result has 18.8 percent of original size [2023-11-19 04:13:43,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 354 treesize of output 528 [2023-11-19 04:13:43,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:43,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:43,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:43,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:43,543 INFO L349 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2023-11-19 04:13:43,544 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 247 treesize of output 229 [2023-11-19 04:13:43,627 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 25 treesize of output 19 [2023-11-19 04:13:43,698 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 25 treesize of output 7 [2023-11-19 04:13:44,368 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 58 [2023-11-19 04:13:44,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 58 [2023-11-19 04:13:44,925 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 58 [2023-11-19 04:13:45,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 58 [2023-11-19 04:13:45,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 58 [2023-11-19 04:13:45,923 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:13:45,963 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:13:45,983 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:13:46,059 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:13:46,072 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:13:46,086 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:13:46,097 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:13:46,142 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:13:46,142 INFO L224 Elim1Store]: Index analysis took 346 ms [2023-11-19 04:13:46,371 INFO L349 Elim1Store]: treesize reduction 198, result has 14.3 percent of original size [2023-11-19 04:13:46,372 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 6 select indices, 6 select index equivalence classes, 16 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 444 treesize of output 400 [2023-11-19 04:13:47,752 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:13:47,774 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:13:47,775 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:13:47,794 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:13:47,802 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:13:47,838 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:13:47,843 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:13:47,853 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:13:47,856 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:13:47,857 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:13:47,862 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:13:47,862 INFO L224 Elim1Store]: Index analysis took 112 ms [2023-11-19 04:13:47,867 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 366 treesize of output 306 [2023-11-19 04:13:50,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:50,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:50,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:50,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:50,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:50,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:50,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:50,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:50,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:50,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:50,858 INFO L349 Elim1Store]: treesize reduction 240, result has 9.4 percent of original size [2023-11-19 04:13:50,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 8 case distinctions, treesize of input 719756 treesize of output 687044 [2023-11-19 04:13:51,357 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-19 04:13:51,358 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 376 treesize of output 379 [2023-11-19 04:13:52,052 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-11-19 04:13:52,082 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-19 04:13:52,109 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-19 04:13:52,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:52,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:52,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:52,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:52,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:52,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:52,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:52,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:52,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:52,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:52,214 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 120 treesize of output 76 [2023-11-19 04:13:52,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2023-11-19 04:13:52,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:52,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:52,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:52,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:52,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:52,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:52,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:52,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:52,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:52,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:52,264 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 118 treesize of output 74 [2023-11-19 04:13:52,295 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-19 04:13:52,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 7 [2023-11-19 04:13:52,303 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-11-19 04:13:52,741 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:13:52,742 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:13:52,743 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:13:52,747 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-19 04:13:52,762 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:13:52,763 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:13:52,765 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:13:52,768 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-19 04:13:52,843 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 20 treesize of output 18 [2023-11-19 04:13:52,977 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 26 treesize of output 10 [2023-11-19 04:13:53,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:13:53,008 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:13:53,009 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:13:53,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843604901] [2023-11-19 04:13:53,009 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:13:53,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008588646] [2023-11-19 04:13:53,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008588646] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:13:53,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:13:53,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 04:13:53,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063727739] [2023-11-19 04:13:53,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:13:53,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 04:13:53,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:13:53,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 04:13:53,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-19 04:13:53,012 INFO L87 Difference]: Start difference. First operand 88 states and 96 transitions. Second operand has 8 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:13:53,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:13:53,472 INFO L93 Difference]: Finished difference Result 118 states and 120 transitions. [2023-11-19 04:13:53,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 04:13:53,473 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-19 04:13:53,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:13:53,474 INFO L225 Difference]: With dead ends: 118 [2023-11-19 04:13:53,474 INFO L226 Difference]: Without dead ends: 117 [2023-11-19 04:13:53,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-11-19 04:13:53,476 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 83 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:13:53,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 318 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:13:53,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-11-19 04:13:53,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 88. [2023-11-19 04:13:53,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 53 states have (on average 1.6226415094339623) internal successors, (86), 81 states have internal predecessors, (86), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-19 04:13:53,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 95 transitions. [2023-11-19 04:13:53,493 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 95 transitions. Word has length 12 [2023-11-19 04:13:53,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:13:53,493 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 95 transitions. [2023-11-19 04:13:53,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:13:53,494 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 95 transitions. [2023-11-19 04:13:53,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-19 04:13:53,494 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:13:53,494 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:13:53,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3217e0e4-8d47-439b-801d-a073290c0672/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 04:13:53,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3217e0e4-8d47-439b-801d-a073290c0672/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:13:53,708 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_30_to_38_0Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2023-11-19 04:13:53,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:13:53,708 INFO L85 PathProgramCache]: Analyzing trace with hash -53666001, now seen corresponding path program 1 times [2023-11-19 04:13:53,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:13:53,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695397658] [2023-11-19 04:13:53,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:13:53,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:13:53,746 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:13:53,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [873389274] [2023-11-19 04:13:53,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:13:53,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:13:53,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3217e0e4-8d47-439b-801d-a073290c0672/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:13:53,752 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3217e0e4-8d47-439b-801d-a073290c0672/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:13:53,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3217e0e4-8d47-439b-801d-a073290c0672/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 04:13:53,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:13:53,937 INFO L262 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-19 04:13:53,942 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:13:53,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:13:57,906 INFO L349 Elim1Store]: treesize reduction 1100, result has 23.1 percent of original size [2023-11-19 04:13:57,907 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 5 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 6 new quantified variables, introduced 20 case distinctions, treesize of input 9238 treesize of output 4054 [2023-11-19 04:13:58,249 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 04:13:58,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26125 treesize of output 26037 [2023-11-19 04:13:58,566 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-19 04:14:13,545 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-19 04:14:14,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-19 04:14:14,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-19 04:14:14,663 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-19 04:14:15,423 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-19 04:14:15,566 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-19 04:14:15,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-19 04:14:15,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-19 04:14:15,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-19 04:14:16,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-19 04:14:16,902 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7