./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 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d056916f-64d5-4c3d-83bd-685c24a79f24/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d056916f-64d5-4c3d-83bd-685c24a79f24/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d056916f-64d5-4c3d-83bd-685c24a79f24/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d056916f-64d5-4c3d-83bd-685c24a79f24/bin/utaipan-verify-SwPr7d2a91/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_d056916f-64d5-4c3d-83bd-685c24a79f24/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d056916f-64d5-4c3d-83bd-685c24a79f24/bin/utaipan-verify-SwPr7d2a91 --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 0.2.4-dev-0e0057c [2023-11-24 23:20:33,837 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:20:33,907 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d056916f-64d5-4c3d-83bd-685c24a79f24/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-24 23:20:33,913 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:20:33,914 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:20:33,939 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:20:33,940 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:20:33,940 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:20:33,941 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:20:33,942 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:20:33,942 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:20:33,943 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:20:33,943 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:20:33,944 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:20:33,944 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:20:33,945 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:20:33,945 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:20:33,946 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:20:33,946 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:20:33,951 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:20:33,951 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:20:33,952 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:20:33,953 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:20:33,953 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:20:33,953 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:20:33,954 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:20:33,954 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:20:33,955 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:20:33,955 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:20:33,955 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:20:33,956 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:20:33,956 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-24 23:20:33,956 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 23:20:33,956 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:20:33,957 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:20:33,957 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:20:33,957 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:20:33,957 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:20:33,957 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:20:33,958 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:20:33,958 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:20:33,958 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:20:33,958 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:20:33,959 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:20:33,959 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:20:33,959 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:20:33,959 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:20:33,959 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:20:33,960 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:20:33,960 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_d056916f-64d5-4c3d-83bd-685c24a79f24/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d056916f-64d5-4c3d-83bd-685c24a79f24/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d611551bdd81171138955e09eec2c35a3c053022d643f86b25023a5ba282a01a [2023-11-24 23:20:34,204 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:20:34,231 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:20:34,233 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:20:34,235 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:20:34,235 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:20:34,237 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d056916f-64d5-4c3d-83bd-685c24a79f24/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/recursified_nla-digbench/recursified_geo3-ll.c [2023-11-24 23:20:37,463 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:20:37,721 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:20:37,723 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d056916f-64d5-4c3d-83bd-685c24a79f24/sv-benchmarks/c/recursified_nla-digbench/recursified_geo3-ll.c [2023-11-24 23:20:37,733 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d056916f-64d5-4c3d-83bd-685c24a79f24/bin/utaipan-verify-SwPr7d2a91/data/207382edd/44640a9e6ade49e7b4d7ff4f9cfbfb5e/FLAGe6a636097 [2023-11-24 23:20:37,756 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d056916f-64d5-4c3d-83bd-685c24a79f24/bin/utaipan-verify-SwPr7d2a91/data/207382edd/44640a9e6ade49e7b4d7ff4f9cfbfb5e [2023-11-24 23:20:37,767 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:20:37,771 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:20:37,776 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:20:37,776 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:20:37,782 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:20:37,782 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:20:37" (1/1) ... [2023-11-24 23:20:37,784 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a970ffb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:37, skipping insertion in model container [2023-11-24 23:20:37,785 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:20:37" (1/1) ... [2023-11-24 23:20:37,816 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:20:38,050 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:20:38,063 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:20:38,099 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:20:38,115 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:20:38,116 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:38 WrapperNode [2023-11-24 23:20:38,116 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:20:38,118 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:20:38,118 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:20:38,118 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:20:38,127 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:38" (1/1) ... [2023-11-24 23:20:38,149 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:38" (1/1) ... [2023-11-24 23:20:38,171 INFO L138 Inliner]: procedures = 16, calls = 67, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 102 [2023-11-24 23:20:38,171 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:20:38,172 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:20:38,172 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:20:38,172 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:20:38,182 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:38" (1/1) ... [2023-11-24 23:20:38,182 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:38" (1/1) ... [2023-11-24 23:20:38,186 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:38" (1/1) ... [2023-11-24 23:20:38,186 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:38" (1/1) ... [2023-11-24 23:20:38,194 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:38" (1/1) ... [2023-11-24 23:20:38,197 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:38" (1/1) ... [2023-11-24 23:20:38,199 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:38" (1/1) ... [2023-11-24 23:20:38,200 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:38" (1/1) ... [2023-11-24 23:20:38,203 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:20:38,204 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:20:38,205 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:20:38,205 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:20:38,206 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:38" (1/1) ... [2023-11-24 23:20:38,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:20:38,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d056916f-64d5-4c3d-83bd-685c24a79f24/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:20:38,242 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d056916f-64d5-4c3d-83bd-685c24a79f24/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:20:38,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d056916f-64d5-4c3d-83bd-685c24a79f24/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:20:38,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:20:38,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:20:38,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:20:38,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 23:20:38,276 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_30_to_38_0 [2023-11-24 23:20:38,278 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_30_to_38_0 [2023-11-24 23:20:38,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:20:38,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:20:38,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 23:20:38,279 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-24 23:20:38,279 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-24 23:20:38,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:20:38,362 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:20:38,364 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:20:38,797 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:20:38,846 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:20:38,855 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-24 23:20:38,857 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:20:38 BoogieIcfgContainer [2023-11-24 23:20:38,858 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:20:38,861 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:20:38,862 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:20:38,864 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:20:38,866 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:20:37" (1/3) ... [2023-11-24 23:20:38,866 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4633ba19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:20:38, skipping insertion in model container [2023-11-24 23:20:38,867 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:38" (2/3) ... [2023-11-24 23:20:38,868 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4633ba19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:20:38, skipping insertion in model container [2023-11-24 23:20:38,869 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:20:38" (3/3) ... [2023-11-24 23:20:38,870 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_geo3-ll.c [2023-11-24 23:20:38,888 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:20:38,888 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2023-11-24 23:20:38,939 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:20:38,946 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;@20adf0de, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:20:38,946 INFO L358 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2023-11-24 23:20:38,950 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) [2023-11-24 23:20:38,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-24 23:20:38,956 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:20:38,957 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-24 23:20:38,957 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)] === [2023-11-24 23:20:38,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:20:38,963 INFO L85 PathProgramCache]: Analyzing trace with hash 4301, now seen corresponding path program 1 times [2023-11-24 23:20:38,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:20:38,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851641120] [2023-11-24 23:20:38,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:20:38,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:20:39,179 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:20:39,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1587750576] [2023-11-24 23:20:39,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:20:39,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:20:39,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d056916f-64d5-4c3d-83bd-685c24a79f24/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:20:39,187 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d056916f-64d5-4c3d-83bd-685c24a79f24/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:20:39,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d056916f-64d5-4c3d-83bd-685c24a79f24/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 23:20:39,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:20:39,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-24 23:20:39,392 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:20:39,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:20:39,577 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 289 treesize of output 111 [2023-11-24 23:20:39,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:20:39,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:20:39,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:20:39,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:20:39,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:20:39,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:20:39,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:20:39,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:20:39,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:20:39,620 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 47 treesize of output 23 [2023-11-24 23:20:39,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:20:39,675 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:20:39,675 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:20:39,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851641120] [2023-11-24 23:20:39,676 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:20:39,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587750576] [2023-11-24 23:20:39,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587750576] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:20:39,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:20:39,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 23:20:39,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468952380] [2023-11-24 23:20:39,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:20:39,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:20:39,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:20:39,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:20:39,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:20:39,725 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) [2023-11-24 23:20:39,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:20:39,793 INFO L93 Difference]: Finished difference Result 104 states and 107 transitions. [2023-11-24 23:20:39,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:20:39,795 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 [2023-11-24 23:20:39,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:20:39,804 INFO L225 Difference]: With dead ends: 104 [2023-11-24 23:20:39,804 INFO L226 Difference]: Without dead ends: 71 [2023-11-24 23:20:39,807 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 [2023-11-24 23:20:39,812 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 [2023-11-24 23:20:39,814 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] [2023-11-24 23:20:39,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-11-24 23:20:39,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2023-11-24 23:20:39,865 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) [2023-11-24 23:20:39,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2023-11-24 23:20:39,873 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 2 [2023-11-24 23:20:39,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:20:39,873 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2023-11-24 23:20:39,873 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) [2023-11-24 23:20:39,874 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2023-11-24 23:20:39,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-24 23:20:39,874 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:20:39,874 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:20:39,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d056916f-64d5-4c3d-83bd-685c24a79f24/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-24 23:20:40,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d056916f-64d5-4c3d-83bd-685c24a79f24/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-24 23:20:40,081 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)] === [2023-11-24 23:20:40,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:20:40,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1335794297, now seen corresponding path program 1 times [2023-11-24 23:20:40,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:20:40,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703700418] [2023-11-24 23:20:40,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:20:40,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:20:40,133 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:20:40,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1090211173] [2023-11-24 23:20:40,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:20:40,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:20:40,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d056916f-64d5-4c3d-83bd-685c24a79f24/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:20:40,135 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d056916f-64d5-4c3d-83bd-685c24a79f24/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:20:40,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d056916f-64d5-4c3d-83bd-685c24a79f24/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 23:20:40,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:20:40,291 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 65 conjunts are in the unsatisfiable core [2023-11-24 23:20:40,298 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:20:40,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:20:40,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:20:40,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:20:40,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:20:40,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:20:40,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:20:40,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:20:40,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:20:40,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:20:40,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:20:40,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:20:40,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:20:40,415 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 [2023-11-24 23:20:40,486 INFO L349 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-11-24 23:20:40,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 115 treesize of output 103 [2023-11-24 23:20:40,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 14 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 28 [2023-11-24 23:20:40,916 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 44 [2023-11-24 23:20:41,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 20 [2023-11-24 23:20:41,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:20:41,355 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:20:41,356 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:20:41,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703700418] [2023-11-24 23:20:41,356 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:20:41,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090211173] [2023-11-24 23:20:41,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090211173] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:20:41,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:20:41,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 23:20:41,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312439143] [2023-11-24 23:20:41,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:20:41,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-24 23:20:41,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:20:41,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-24 23:20:41,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-24 23:20:41,361 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) [2023-11-24 23:20:42,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:20:42,536 INFO L93 Difference]: Finished difference Result 123 states and 125 transitions. [2023-11-24 23:20:42,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-24 23:20:42,536 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 [2023-11-24 23:20:42,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:20:42,538 INFO L225 Difference]: With dead ends: 123 [2023-11-24 23:20:42,538 INFO L226 Difference]: Without dead ends: 122 [2023-11-24 23:20:42,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-24 23:20:42,540 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 113 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2023-11-24 23:20:42,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 268 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-24 23:20:42,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2023-11-24 23:20:42,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 88. [2023-11-24 23:20:42,558 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) [2023-11-24 23:20:42,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 100 transitions. [2023-11-24 23:20:42,564 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 100 transitions. Word has length 7 [2023-11-24 23:20:42,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:20:42,565 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 100 transitions. [2023-11-24 23:20:42,565 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) [2023-11-24 23:20:42,565 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 100 transitions. [2023-11-24 23:20:42,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-24 23:20:42,566 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:20:42,566 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:20:42,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d056916f-64d5-4c3d-83bd-685c24a79f24/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-24 23:20:42,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d056916f-64d5-4c3d-83bd-685c24a79f24/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:20:42,773 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)] === [2023-11-24 23:20:42,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:20:42,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1540049790, now seen corresponding path program 1 times [2023-11-24 23:20:42,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:20:42,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313454391] [2023-11-24 23:20:42,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:20:42,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:20:42,821 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:20:42,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [883241833] [2023-11-24 23:20:42,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:20:42,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:20:42,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d056916f-64d5-4c3d-83bd-685c24a79f24/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:20:42,829 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d056916f-64d5-4c3d-83bd-685c24a79f24/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:20:42,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d056916f-64d5-4c3d-83bd-685c24a79f24/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-24 23:20:42,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:20:42,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 67 conjunts are in the unsatisfiable core [2023-11-24 23:20:42,961 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:20:43,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:20:43,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:20:43,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:20:43,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:20:43,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:20:43,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:20:43,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:20:43,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:20:43,064 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 [2023-11-24 23:20:43,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:20:43,100 INFO L349 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2023-11-24 23:20:43,100 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 [2023-11-24 23:20:43,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 14 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 18 [2023-11-24 23:20:43,256 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 [2023-11-24 23:20:43,436 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 [2023-11-24 23:20:43,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:20:43,455 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:20:43,455 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:20:43,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313454391] [2023-11-24 23:20:43,456 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:20:43,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883241833] [2023-11-24 23:20:43,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883241833] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:20:43,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:20:43,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 23:20:43,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578114014] [2023-11-24 23:20:43,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:20:43,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 23:20:43,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:20:43,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 23:20:43,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 23:20:43,459 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) [2023-11-24 23:20:44,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:20:44,108 INFO L93 Difference]: Finished difference Result 122 states and 124 transitions. [2023-11-24 23:20:44,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 23:20:44,109 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 [2023-11-24 23:20:44,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:20:44,110 INFO L225 Difference]: With dead ends: 122 [2023-11-24 23:20:44,111 INFO L226 Difference]: Without dead ends: 121 [2023-11-24 23:20:44,111 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 [2023-11-24 23:20:44,112 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 107 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2023-11-24 23:20:44,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 236 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-24 23:20:44,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-11-24 23:20:44,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 88. [2023-11-24 23:20:44,131 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) [2023-11-24 23:20:44,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 99 transitions. [2023-11-24 23:20:44,135 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 99 transitions. Word has length 8 [2023-11-24 23:20:44,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:20:44,136 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 99 transitions. [2023-11-24 23:20:44,136 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) [2023-11-24 23:20:44,136 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 99 transitions. [2023-11-24 23:20:44,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-24 23:20:44,137 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:20:44,137 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:20:44,149 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d056916f-64d5-4c3d-83bd-685c24a79f24/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-24 23:20:44,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d056916f-64d5-4c3d-83bd-685c24a79f24/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-24 23:20:44,344 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)] === [2023-11-24 23:20:44,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:20:44,344 INFO L85 PathProgramCache]: Analyzing trace with hash 496903273, now seen corresponding path program 1 times [2023-11-24 23:20:44,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:20:44,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124089653] [2023-11-24 23:20:44,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:20:44,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:20:44,389 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:20:44,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [637710334] [2023-11-24 23:20:44,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:20:44,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:20:44,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d056916f-64d5-4c3d-83bd-685c24a79f24/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:20:44,399 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d056916f-64d5-4c3d-83bd-685c24a79f24/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:20:44,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d056916f-64d5-4c3d-83bd-685c24a79f24/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-24 23:20:44,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:20:44,536 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 70 conjunts are in the unsatisfiable core [2023-11-24 23:20:44,540 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:20:44,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:20:44,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:20:44,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:20:44,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:20:44,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:20:44,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:20:44,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:20:44,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:20:44,620 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 [2023-11-24 23:20:44,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:20:44,660 INFO L349 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2023-11-24 23:20:44,661 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 [2023-11-24 23:20:44,677 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 [2023-11-24 23:20:44,835 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 [2023-11-24 23:20:45,208 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 [2023-11-24 23:20:45,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:20:45,241 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:20:45,241 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:20:45,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124089653] [2023-11-24 23:20:45,241 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:20:45,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637710334] [2023-11-24 23:20:45,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637710334] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:20:45,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:20:45,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 23:20:45,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321888298] [2023-11-24 23:20:45,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:20:45,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-24 23:20:45,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:20:45,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-24 23:20:45,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-24 23:20:45,244 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) [2023-11-24 23:20:46,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:20:46,068 INFO L93 Difference]: Finished difference Result 121 states and 123 transitions. [2023-11-24 23:20:46,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 23:20:46,068 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 [2023-11-24 23:20:46,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:20:46,070 INFO L225 Difference]: With dead ends: 121 [2023-11-24 23:20:46,070 INFO L226 Difference]: Without dead ends: 119 [2023-11-24 23:20:46,070 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 [2023-11-24 23:20:46,071 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 98 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.4s IncrementalHoareTripleChecker+Time [2023-11-24 23:20:46,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 309 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-24 23:20:46,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2023-11-24 23:20:46,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 88. [2023-11-24 23:20:46,086 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) [2023-11-24 23:20:46,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 97 transitions. [2023-11-24 23:20:46,088 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 97 transitions. Word has length 9 [2023-11-24 23:20:46,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:20:46,089 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 97 transitions. [2023-11-24 23:20:46,089 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) [2023-11-24 23:20:46,089 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 97 transitions. [2023-11-24 23:20:46,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-24 23:20:46,090 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:20:46,090 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:20:46,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d056916f-64d5-4c3d-83bd-685c24a79f24/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-24 23:20:46,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d056916f-64d5-4c3d-83bd-685c24a79f24/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:20:46,296 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)] === [2023-11-24 23:20:46,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:20:46,297 INFO L85 PathProgramCache]: Analyzing trace with hash 782676811, now seen corresponding path program 1 times [2023-11-24 23:20:46,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:20:46,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200810600] [2023-11-24 23:20:46,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:20:46,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:20:46,360 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:20:46,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1284067766] [2023-11-24 23:20:46,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:20:46,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:20:46,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d056916f-64d5-4c3d-83bd-685c24a79f24/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:20:46,366 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d056916f-64d5-4c3d-83bd-685c24a79f24/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:20:46,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d056916f-64d5-4c3d-83bd-685c24a79f24/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-24 23:20:46,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:20:46,509 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 51 conjunts are in the unsatisfiable core [2023-11-24 23:20:46,513 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:20:46,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:20:46,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:20:46,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:20:46,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:20:46,654 INFO L349 Elim1Store]: treesize reduction 70, result has 29.3 percent of original size [2023-11-24 23:20:46,654 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 133 treesize of output 64 [2023-11-24 23:20:46,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:20:46,701 INFO L349 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2023-11-24 23:20:46,702 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 295 treesize of output 277 [2023-11-24 23:20:46,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:20:46,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:20:46,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:20:46,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:20:46,752 INFO L349 Elim1Store]: treesize reduction 44, result has 21.4 percent of original size [2023-11-24 23:20:46,753 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 57 [2023-11-24 23:20:47,181 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 [2023-11-24 23:20:47,340 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 [2023-11-24 23:20:47,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:20:47,360 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:20:47,360 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:20:47,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200810600] [2023-11-24 23:20:47,360 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:20:47,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284067766] [2023-11-24 23:20:47,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284067766] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:20:47,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:20:47,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 23:20:47,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434465815] [2023-11-24 23:20:47,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:20:47,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-24 23:20:47,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:20:47,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-24 23:20:47,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-24 23:20:47,363 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) [2023-11-24 23:20:47,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:20:47,868 INFO L93 Difference]: Finished difference Result 119 states and 121 transitions. [2023-11-24 23:20:47,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 23:20:47,869 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 [2023-11-24 23:20:47,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:20:47,870 INFO L225 Difference]: With dead ends: 119 [2023-11-24 23:20:47,870 INFO L226 Difference]: Without dead ends: 118 [2023-11-24 23:20:47,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2023-11-24 23:20:47,871 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 108 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2023-11-24 23:20:47,872 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] [2023-11-24 23:20:47,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2023-11-24 23:20:47,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 88. [2023-11-24 23:20:47,885 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) [2023-11-24 23:20:47,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 96 transitions. [2023-11-24 23:20:47,887 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 96 transitions. Word has length 11 [2023-11-24 23:20:47,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:20:47,887 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 96 transitions. [2023-11-24 23:20:47,887 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) [2023-11-24 23:20:47,887 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 96 transitions. [2023-11-24 23:20:47,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-24 23:20:47,888 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:20:47,888 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:20:47,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d056916f-64d5-4c3d-83bd-685c24a79f24/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-24 23:20:48,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d056916f-64d5-4c3d-83bd-685c24a79f24/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:20:48,094 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)] === [2023-11-24 23:20:48,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:20:48,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1506822590, now seen corresponding path program 1 times [2023-11-24 23:20:48,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:20:48,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009898044] [2023-11-24 23:20:48,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:20:48,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:20:48,129 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:20:48,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1636577474] [2023-11-24 23:20:48,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:20:48,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:20:48,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d056916f-64d5-4c3d-83bd-685c24a79f24/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:20:48,130 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d056916f-64d5-4c3d-83bd-685c24a79f24/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:20:48,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d056916f-64d5-4c3d-83bd-685c24a79f24/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-24 23:20:48,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:20:48,263 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 54 conjunts are in the unsatisfiable core [2023-11-24 23:20:48,270 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:20:48,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:20:48,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:20:48,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:20:48,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:20:48,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:20:48,489 INFO L349 Elim1Store]: treesize reduction 138, result has 29.9 percent of original size [2023-11-24 23:20:48,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 256 treesize of output 81 [2023-11-24 23:20:48,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:20:48,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:20:48,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:20:48,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:20:48,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:20:48,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:20:48,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:20:48,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:20:48,562 INFO L349 Elim1Store]: treesize reduction 61, result has 12.9 percent of original size [2023-11-24 23:20:48,562 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 78 treesize of output 89 [2023-11-24 23:20:48,608 INFO L349 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2023-11-24 23:20:48,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 310 treesize of output 296 [2023-11-24 23:20:48,998 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-24 23:20:48,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2023-11-24 23:20:49,257 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-24 23:20:49,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 13 [2023-11-24 23:20:49,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:20:49,292 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:20:49,292 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:20:49,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009898044] [2023-11-24 23:20:49,292 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:20:49,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636577474] [2023-11-24 23:20:49,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636577474] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:20:49,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:20:49,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 23:20:49,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478744268] [2023-11-24 23:20:49,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:20:49,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-24 23:20:49,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:20:49,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-24 23:20:49,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-24 23:20:49,295 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) [2023-11-24 23:20:49,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:20:49,837 INFO L93 Difference]: Finished difference Result 118 states and 120 transitions. [2023-11-24 23:20:49,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 23:20:49,837 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 [2023-11-24 23:20:49,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:20:49,838 INFO L225 Difference]: With dead ends: 118 [2023-11-24 23:20:49,838 INFO L226 Difference]: Without dead ends: 117 [2023-11-24 23:20:49,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-11-24 23:20:49,840 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 [2023-11-24 23:20:49,840 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] [2023-11-24 23:20:49,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-11-24 23:20:49,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 88. [2023-11-24 23:20:49,853 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) [2023-11-24 23:20:49,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 95 transitions. [2023-11-24 23:20:49,858 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 95 transitions. Word has length 12 [2023-11-24 23:20:49,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:20:49,859 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 95 transitions. [2023-11-24 23:20:49,859 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) [2023-11-24 23:20:49,859 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 95 transitions. [2023-11-24 23:20:49,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-24 23:20:49,860 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:20:49,860 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:20:49,870 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d056916f-64d5-4c3d-83bd-685c24a79f24/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-24 23:20:50,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d056916f-64d5-4c3d-83bd-685c24a79f24/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:20:50,061 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)] === [2023-11-24 23:20:50,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:20:50,062 INFO L85 PathProgramCache]: Analyzing trace with hash 533140013, now seen corresponding path program 1 times [2023-11-24 23:20:50,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:20:50,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977397912] [2023-11-24 23:20:50,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:20:50,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:20:50,090 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:20:50,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [933800675] [2023-11-24 23:20:50,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:20:50,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:20:50,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d056916f-64d5-4c3d-83bd-685c24a79f24/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:20:50,101 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d056916f-64d5-4c3d-83bd-685c24a79f24/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:20:50,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d056916f-64d5-4c3d-83bd-685c24a79f24/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-24 23:20:50,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:20:50,230 INFO L262 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-24 23:20:50,238 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:20:50,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:20:53,751 INFO L349 Elim1Store]: treesize reduction 1100, result has 23.1 percent of original size [2023-11-24 23:20:53,752 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 [2023-11-24 23:20:54,006 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-24 23:20:54,009 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 538421 treesize of output 535077 [2023-11-24 23:20:54,552 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 [2023-11-24 23:21:03,504 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 [2023-11-24 23:21:03,660 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 [2023-11-24 23:21:03,784 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 [2023-11-24 23:21:04,517 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 [2023-11-24 23:21:04,725 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 [2023-11-24 23:21:05,624 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 [2023-11-24 23:21:05,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:21:05,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 23:21:05,841 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 [2023-11-24 23:21:05,951 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 [2023-11-24 23:21:06,662 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 [2023-11-24 23:21:06,768 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 [2023-11-24 23:21:06,872 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 [2023-11-24 23:21:07,023 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 [2023-11-24 23:21:07,126 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