./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursified_nla-digbench/recursified_hard-u.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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_008f8606-741b-45b9-9d0f-57e5b42e9f89/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_008f8606-741b-45b9-9d0f-57e5b42e9f89/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_008f8606-741b-45b9-9d0f-57e5b42e9f89/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_008f8606-741b-45b9-9d0f-57e5b42e9f89/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursified_nla-digbench/recursified_hard-u.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_008f8606-741b-45b9-9d0f-57e5b42e9f89/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_008f8606-741b-45b9-9d0f-57e5b42e9f89/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 27783f29349ebae8401558a8bc17fafd87092d54a86e2af0abb3d67f703ff6c0 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 14:47:17,571 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 14:47:17,657 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_008f8606-741b-45b9-9d0f-57e5b42e9f89/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 14:47:17,661 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 14:47:17,662 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 14:47:17,685 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 14:47:17,686 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 14:47:17,686 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 14:47:17,687 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 14:47:17,688 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 14:47:17,688 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 14:47:17,689 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 14:47:17,689 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 14:47:17,689 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 14:47:17,690 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 14:47:17,690 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 14:47:17,691 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 14:47:17,691 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 14:47:17,692 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 14:47:17,692 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 14:47:17,693 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 14:47:17,694 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 14:47:17,694 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 14:47:17,695 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 14:47:17,695 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 14:47:17,696 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 14:47:17,696 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 14:47:17,696 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 14:47:17,697 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 14:47:17,697 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 14:47:17,697 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 14:47:17,698 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 14:47:17,698 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 14:47:17,698 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 14:47:17,699 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 14:47:17,699 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 14:47:17,699 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 14:47:17,699 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 14:47:17,700 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 14:47:17,700 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 14:47:17,700 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 14:47:17,700 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 14:47:17,701 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 14:47:17,701 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 14:47:17,701 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 14:47:17,701 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 14:47:17,701 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 14:47:17,701 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_008f8606-741b-45b9-9d0f-57e5b42e9f89/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_008f8606-741b-45b9-9d0f-57e5b42e9f89/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 27783f29349ebae8401558a8bc17fafd87092d54a86e2af0abb3d67f703ff6c0 [2023-12-02 14:47:17,959 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 14:47:17,980 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 14:47:17,983 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 14:47:17,984 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 14:47:17,984 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 14:47:17,986 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_008f8606-741b-45b9-9d0f-57e5b42e9f89/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/recursified_nla-digbench/recursified_hard-u.c [2023-12-02 14:47:20,652 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 14:47:20,836 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 14:47:20,837 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_008f8606-741b-45b9-9d0f-57e5b42e9f89/sv-benchmarks/c/recursified_nla-digbench/recursified_hard-u.c [2023-12-02 14:47:20,845 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_008f8606-741b-45b9-9d0f-57e5b42e9f89/bin/utaipan-verify-nQ1chXbOIh/data/89010881e/31e87a4fdf3941f2939b50ac9b7e6de4/FLAG3f900832f [2023-12-02 14:47:20,858 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_008f8606-741b-45b9-9d0f-57e5b42e9f89/bin/utaipan-verify-nQ1chXbOIh/data/89010881e/31e87a4fdf3941f2939b50ac9b7e6de4 [2023-12-02 14:47:20,860 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 14:47:20,861 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 14:47:20,863 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 14:47:20,863 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 14:47:20,867 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 14:47:20,868 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:47:20" (1/1) ... [2023-12-02 14:47:20,869 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d109b70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:47:20, skipping insertion in model container [2023-12-02 14:47:20,869 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:47:20" (1/1) ... [2023-12-02 14:47:20,889 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 14:47:21,011 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_008f8606-741b-45b9-9d0f-57e5b42e9f89/sv-benchmarks/c/recursified_nla-digbench/recursified_hard-u.c[1080,1093] [2023-12-02 14:47:21,034 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:47:21,045 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 14:47:21,063 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_008f8606-741b-45b9-9d0f-57e5b42e9f89/sv-benchmarks/c/recursified_nla-digbench/recursified_hard-u.c[1080,1093] [2023-12-02 14:47:21,085 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:47:21,135 INFO L206 MainTranslator]: Completed translation [2023-12-02 14:47:21,135 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:47:21 WrapperNode [2023-12-02 14:47:21,135 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 14:47:21,136 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 14:47:21,137 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 14:47:21,137 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 14:47:21,144 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:47:21" (1/1) ... [2023-12-02 14:47:21,160 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:47:21" (1/1) ... [2023-12-02 14:47:21,182 INFO L138 Inliner]: procedures = 17, calls = 84, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 77 [2023-12-02 14:47:21,182 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 14:47:21,183 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 14:47:21,183 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 14:47:21,183 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 14:47:21,192 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:47:21" (1/1) ... [2023-12-02 14:47:21,192 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:47:21" (1/1) ... [2023-12-02 14:47:21,195 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:47:21" (1/1) ... [2023-12-02 14:47:21,196 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:47:21" (1/1) ... [2023-12-02 14:47:21,202 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:47:21" (1/1) ... [2023-12-02 14:47:21,204 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:47:21" (1/1) ... [2023-12-02 14:47:21,206 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:47:21" (1/1) ... [2023-12-02 14:47:21,207 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:47:21" (1/1) ... [2023-12-02 14:47:21,210 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 14:47:21,211 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 14:47:21,211 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 14:47:21,212 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 14:47:21,212 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:47:21" (1/1) ... [2023-12-02 14:47:21,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 14:47:21,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_008f8606-741b-45b9-9d0f-57e5b42e9f89/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:47:21,244 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_008f8606-741b-45b9-9d0f-57e5b42e9f89/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 14:47:21,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_008f8606-741b-45b9-9d0f-57e5b42e9f89/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 14:47:21,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 14:47:21,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 14:47:21,276 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_41_to_51_0 [2023-12-02 14:47:21,277 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_41_to_51_0 [2023-12-02 14:47:21,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 14:47:21,277 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_31_to_38_0 [2023-12-02 14:47:21,277 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_31_to_38_0 [2023-12-02 14:47:21,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 14:47:21,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 14:47:21,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 14:47:21,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 14:47:21,278 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 14:47:21,278 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 14:47:21,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 14:47:21,365 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 14:47:21,367 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 14:47:21,618 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 14:47:21,693 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 14:47:21,694 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-02 14:47:21,695 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:47:21 BoogieIcfgContainer [2023-12-02 14:47:21,696 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 14:47:21,699 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 14:47:21,699 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 14:47:21,702 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 14:47:21,702 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:47:20" (1/3) ... [2023-12-02 14:47:21,703 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53edccbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:47:21, skipping insertion in model container [2023-12-02 14:47:21,703 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:47:21" (2/3) ... [2023-12-02 14:47:21,703 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53edccbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:47:21, skipping insertion in model container [2023-12-02 14:47:21,703 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:47:21" (3/3) ... [2023-12-02 14:47:21,705 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_hard-u.c [2023-12-02 14:47:21,719 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 14:47:21,719 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 14:47:21,762 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 14:47:21,768 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;@1b11c8be, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 14:47:21,768 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 14:47:21,772 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 24 states have internal predecessors, (27), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-02 14:47:21,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-02 14:47:21,778 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:47:21,778 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:47:21,779 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:47:21,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:47:21,783 INFO L85 PathProgramCache]: Analyzing trace with hash -446774543, now seen corresponding path program 1 times [2023-12-02 14:47:21,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:47:21,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508924515] [2023-12-02 14:47:21,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:47:21,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:47:21,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:47:22,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:47:22,359 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:47:22,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508924515] [2023-12-02 14:47:22,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508924515] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:47:22,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:47:22,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 14:47:22,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544964963] [2023-12-02 14:47:22,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:47:22,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 14:47:22,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:47:22,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 14:47:22,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-02 14:47:22,398 INFO L87 Difference]: Start difference. First operand has 37 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 24 states have internal predecessors, (27), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 8 states, 6 states have (on average 1.0) internal successors, (6), 5 states have internal predecessors, (6), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:47:22,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:47:22,710 INFO L93 Difference]: Finished difference Result 81 states and 119 transitions. [2023-12-02 14:47:22,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 14:47:22,713 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.0) internal successors, (6), 5 states have internal predecessors, (6), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-12-02 14:47:22,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:47:22,721 INFO L225 Difference]: With dead ends: 81 [2023-12-02 14:47:22,722 INFO L226 Difference]: Without dead ends: 44 [2023-12-02 14:47:22,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-02 14:47:22,729 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 20 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 14:47:22,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 171 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 14:47:22,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-12-02 14:47:22,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 39. [2023-12-02 14:47:22,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 26 states have internal predecessors, (26), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-02 14:47:22,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2023-12-02 14:47:22,774 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 8 [2023-12-02 14:47:22,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:47:22,774 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2023-12-02 14:47:22,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.0) internal successors, (6), 5 states have internal predecessors, (6), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:47:22,775 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2023-12-02 14:47:22,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-02 14:47:22,775 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:47:22,775 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:47:22,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 14:47:22,776 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:47:22,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:47:22,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1156065846, now seen corresponding path program 1 times [2023-12-02 14:47:22,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:47:22,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127749618] [2023-12-02 14:47:22,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:47:22,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:47:22,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:47:23,696 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:47:23,696 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:47:23,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127749618] [2023-12-02 14:47:23,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127749618] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:47:23,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:47:23,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-02 14:47:23,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943703268] [2023-12-02 14:47:23,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:47:23,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 14:47:23,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:47:23,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 14:47:23,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-02 14:47:23,700 INFO L87 Difference]: Start difference. First operand 39 states and 47 transitions. Second operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 14:47:23,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:47:23,966 INFO L93 Difference]: Finished difference Result 57 states and 69 transitions. [2023-12-02 14:47:23,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 14:47:23,967 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2023-12-02 14:47:23,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:47:23,968 INFO L225 Difference]: With dead ends: 57 [2023-12-02 14:47:23,969 INFO L226 Difference]: Without dead ends: 55 [2023-12-02 14:47:23,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-02 14:47:23,971 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 16 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 14:47:23,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 200 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 14:47:23,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-12-02 14:47:23,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2023-12-02 14:47:23,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 33 states have (on average 1.121212121212121) internal successors, (37), 36 states have internal predecessors, (37), 14 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) [2023-12-02 14:47:23,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 65 transitions. [2023-12-02 14:47:23,987 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 65 transitions. Word has length 14 [2023-12-02 14:47:23,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:47:23,987 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 65 transitions. [2023-12-02 14:47:23,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 14:47:23,988 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 65 transitions. [2023-12-02 14:47:23,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-02 14:47:23,988 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:47:23,989 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:47:23,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 14:47:23,989 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:47:23,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:47:23,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1393923359, now seen corresponding path program 1 times [2023-12-02 14:47:23,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:47:23,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875692198] [2023-12-02 14:47:23,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:47:23,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:47:24,026 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:47:24,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1378159366] [2023-12-02 14:47:24,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:47:24,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:47:24,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_008f8606-741b-45b9-9d0f-57e5b42e9f89/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:47:24,030 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_008f8606-741b-45b9-9d0f-57e5b42e9f89/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:47:24,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_008f8606-741b-45b9-9d0f-57e5b42e9f89/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 14:47:24,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:47:24,461 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 78 conjunts are in the unsatisfiable core [2023-12-02 14:47:24,470 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:47:24,628 INFO L349 Elim1Store]: treesize reduction 21, result has 41.7 percent of original size [2023-12-02 14:47:24,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 238 treesize of output 85 [2023-12-02 14:47:24,695 INFO L349 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2023-12-02 14:47:24,695 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 165 treesize of output 157 [2023-12-02 14:47:24,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:47:24,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:47:24,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:47:24,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:47:24,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:47:24,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:47:24,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:47:24,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:47:24,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:47:24,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:47:24,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:47:24,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:47:24,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:47:24,801 INFO L349 Elim1Store]: treesize reduction 76, result has 31.5 percent of original size [2023-12-02 14:47:24,801 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 4 case distinctions, treesize of input 69 treesize of output 94 [2023-12-02 14:47:25,133 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 [2023-12-02 14:47:25,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2023-12-02 14:47:26,088 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 50 treesize of output 22 [2023-12-02 14:47:26,155 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 14:47:26,155 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:47:26,423 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 14:47:26,423 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:47:26,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875692198] [2023-12-02 14:47:26,424 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:47:26,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378159366] [2023-12-02 14:47:26,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378159366] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-02 14:47:26,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 14:47:26,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 17 [2023-12-02 14:47:26,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421979564] [2023-12-02 14:47:26,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:47:26,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 14:47:26,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:47:26,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 14:47:26,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2023-12-02 14:47:26,427 INFO L87 Difference]: Start difference. First operand 54 states and 65 transitions. Second operand has 8 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 14:47:30,116 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 14:47:31,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:47:31,005 INFO L93 Difference]: Finished difference Result 61 states and 72 transitions. [2023-12-02 14:47:31,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 14:47:31,006 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), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2023-12-02 14:47:31,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:47:31,007 INFO L225 Difference]: With dead ends: 61 [2023-12-02 14:47:31,007 INFO L226 Difference]: Without dead ends: 59 [2023-12-02 14:47:31,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2023-12-02 14:47:31,009 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 15 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-12-02 14:47:31,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 200 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-12-02 14:47:31,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-12-02 14:47:31,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2023-12-02 14:47:31,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 36 states have (on average 1.1111111111111112) internal successors, (40), 39 states have internal predecessors, (40), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) [2023-12-02 14:47:31,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 68 transitions. [2023-12-02 14:47:31,023 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 68 transitions. Word has length 20 [2023-12-02 14:47:31,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:47:31,023 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 68 transitions. [2023-12-02 14:47:31,023 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), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 14:47:31,024 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 68 transitions. [2023-12-02 14:47:31,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-02 14:47:31,025 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:47:31,025 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:47:31,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_008f8606-741b-45b9-9d0f-57e5b42e9f89/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 14:47:31,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_008f8606-741b-45b9-9d0f-57e5b42e9f89/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:47:31,226 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:47:31,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:47:31,226 INFO L85 PathProgramCache]: Analyzing trace with hash -885012426, now seen corresponding path program 1 times [2023-12-02 14:47:31,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:47:31,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963369280] [2023-12-02 14:47:31,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:47:31,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:47:31,247 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:47:31,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1948473931] [2023-12-02 14:47:31,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:47:31,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:47:31,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_008f8606-741b-45b9-9d0f-57e5b42e9f89/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:47:31,249 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_008f8606-741b-45b9-9d0f-57e5b42e9f89/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:47:31,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_008f8606-741b-45b9-9d0f-57e5b42e9f89/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 14:47:31,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:47:31,470 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 96 conjunts are in the unsatisfiable core [2023-12-02 14:47:31,476 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:47:31,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:47:31,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:47:31,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:47:31,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:47:31,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:47:31,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:47:31,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:47:31,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:47:31,523 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 257 treesize of output 46 [2023-12-02 14:47:31,587 INFO L349 Elim1Store]: treesize reduction 74, result has 8.6 percent of original size [2023-12-02 14:47:31,587 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 494 treesize of output 488 [2023-12-02 14:47:31,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:47:31,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:47:31,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:47:31,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:47:31,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:47:31,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:47:31,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:47:31,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:47:31,679 INFO L349 Elim1Store]: treesize reduction 26, result has 44.7 percent of original size [2023-12-02 14:47:31,680 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 63 [2023-12-02 14:47:32,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-12-02 14:47:32,346 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-12-02 14:47:32,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 31 [2023-12-02 14:47:32,629 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 33 treesize of output 13 [2023-12-02 14:47:32,678 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 14:47:32,678 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:47:33,315 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:47:33,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963369280] [2023-12-02 14:47:33,315 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:47:33,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948473931] [2023-12-02 14:47:33,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948473931] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:47:33,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1942433568] [2023-12-02 14:47:33,335 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2023-12-02 14:47:33,335 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 14:47:33,339 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 14:47:33,344 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 14:47:33,344 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 14:47:34,084 INFO L197 IcfgInterpreter]: Interpreting procedure func_to_recursive_line_41_to_51_0 with input of size 129 for LOIs [2023-12-02 14:47:34,413 INFO L197 IcfgInterpreter]: Interpreting procedure func_to_recursive_line_31_to_38_0 with input of size 135 for LOIs [2023-12-02 14:47:35,702 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 3 for LOIs [2023-12-02 14:47:35,707 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 14:48:16,603 WARN L293 SmtUtils]: Spent 5.18s on a formula simplification. DAG size of input: 169 DAG size of output: 163 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 14:48:16,604 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '819#(and (<= 1 |#StackHeapBarrier|) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-12-02 14:48:16,604 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 14:48:16,604 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 14:48:16,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2023-12-02 14:48:16,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915597023] [2023-12-02 14:48:16,605 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 14:48:16,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 14:48:16,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:48:16,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 14:48:16,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1050, Unknown=7, NotChecked=0, Total=1190 [2023-12-02 14:48:16,607 INFO L87 Difference]: Start difference. First operand 58 states and 68 transitions. Second operand has 14 states, 10 states have (on average 1.9) internal successors, (19), 11 states have internal predecessors, (19), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 14:48:17,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:48:17,467 INFO L93 Difference]: Finished difference Result 82 states and 97 transitions. [2023-12-02 14:48:17,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-02 14:48:17,467 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 1.9) internal successors, (19), 11 states have internal predecessors, (19), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 32 [2023-12-02 14:48:17,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:48:17,469 INFO L225 Difference]: With dead ends: 82 [2023-12-02 14:48:17,469 INFO L226 Difference]: Without dead ends: 80 [2023-12-02 14:48:17,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 41.8s TimeCoverageRelationStatistics Valid=190, Invalid=1609, Unknown=7, NotChecked=0, Total=1806 [2023-12-02 14:48:17,470 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 47 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 14:48:17,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 99 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 14:48:17,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-12-02 14:48:17,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 76. [2023-12-02 14:48:17,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 47 states have (on average 1.1063829787234043) internal successors, (52), 50 states have internal predecessors, (52), 17 states have call successors, (17), 9 states have call predecessors, (17), 11 states have return successors, (21), 16 states have call predecessors, (21), 16 states have call successors, (21) [2023-12-02 14:48:17,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 90 transitions. [2023-12-02 14:48:17,482 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 90 transitions. Word has length 32 [2023-12-02 14:48:17,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:48:17,483 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 90 transitions. [2023-12-02 14:48:17,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 1.9) internal successors, (19), 11 states have internal predecessors, (19), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 14:48:17,483 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 90 transitions. [2023-12-02 14:48:17,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-02 14:48:17,484 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:48:17,484 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:48:17,489 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_008f8606-741b-45b9-9d0f-57e5b42e9f89/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 14:48:17,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_008f8606-741b-45b9-9d0f-57e5b42e9f89/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:48:17,685 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:48:17,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:48:17,685 INFO L85 PathProgramCache]: Analyzing trace with hash -481527494, now seen corresponding path program 1 times [2023-12-02 14:48:17,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:48:17,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137950459] [2023-12-02 14:48:17,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:48:17,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:48:17,703 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:48:17,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [483373747] [2023-12-02 14:48:17,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:48:17,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:48:17,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_008f8606-741b-45b9-9d0f-57e5b42e9f89/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:48:17,705 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_008f8606-741b-45b9-9d0f-57e5b42e9f89/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:48:17,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_008f8606-741b-45b9-9d0f-57e5b42e9f89/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 14:48:17,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:48:17,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 91 conjunts are in the unsatisfiable core [2023-12-02 14:48:17,854 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:48:17,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:48:17,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:48:17,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:48:17,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:48:17,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:48:17,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:48:17,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:48:17,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:48:17,890 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 [2023-12-02 14:48:17,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:48:17,926 INFO L349 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2023-12-02 14:48:17,926 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 82 treesize of output 72 [2023-12-02 14:48:17,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 35 [2023-12-02 14:48:20,243 WARN L876 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~#d~0#1.offset| Int) (v_func_to_recursive_line_31_to_38_0_~d.base_BEFORE_CALL_20 Int) (v_func_to_recursive_line_31_to_38_0_~A.base_BEFORE_CALL_16 Int) (|ULTIMATE.start_main_~#B~0#1.offset| Int) (|ULTIMATE.start_main_~#B~0#1.base| Int) (v_func_to_recursive_line_31_to_38_0_~r.base_BEFORE_CALL_17 Int)) (and (not (= v_func_to_recursive_line_31_to_38_0_~d.base_BEFORE_CALL_20 v_func_to_recursive_line_31_to_38_0_~A.base_BEFORE_CALL_16)) (not (= v_func_to_recursive_line_31_to_38_0_~r.base_BEFORE_CALL_17 v_func_to_recursive_line_31_to_38_0_~A.base_BEFORE_CALL_16)) (not (= |ULTIMATE.start_main_~#B~0#1.base| v_func_to_recursive_line_31_to_38_0_~A.base_BEFORE_CALL_16)) (= (select (select |c_#memory_int| v_func_to_recursive_line_31_to_38_0_~r.base_BEFORE_CALL_17) 0) (select (select |c_#memory_int| v_func_to_recursive_line_31_to_38_0_~A.base_BEFORE_CALL_16) 0)) (not (= v_func_to_recursive_line_31_to_38_0_~r.base_BEFORE_CALL_17 v_func_to_recursive_line_31_to_38_0_~d.base_BEFORE_CALL_20)) (not (= |ULTIMATE.start_main_~#B~0#1.base| v_func_to_recursive_line_31_to_38_0_~r.base_BEFORE_CALL_17)) (= (select (select |c_#memory_int| v_func_to_recursive_line_31_to_38_0_~d.base_BEFORE_CALL_20) |ULTIMATE.start_main_~#d~0#1.offset|) (select (select |c_#memory_int| |ULTIMATE.start_main_~#B~0#1.base|) |ULTIMATE.start_main_~#B~0#1.offset|)) (not (= |ULTIMATE.start_main_~#B~0#1.base| v_func_to_recursive_line_31_to_38_0_~d.base_BEFORE_CALL_20)))) is different from true [2023-12-02 14:48:22,476 WARN L876 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~#d~0#1.offset| Int) (v_func_to_recursive_line_31_to_38_0_~A.base_BEFORE_CALL_17 Int) (|ULTIMATE.start_main_~#B~0#1.offset| Int) (v_func_to_recursive_line_31_to_38_0_~r.base_BEFORE_CALL_18 Int) (|ULTIMATE.start_main_~#B~0#1.base| Int) (v_func_to_recursive_line_31_to_38_0_~d.base_BEFORE_CALL_21 Int)) (and (not (= |ULTIMATE.start_main_~#B~0#1.base| v_func_to_recursive_line_31_to_38_0_~A.base_BEFORE_CALL_17)) (not (= v_func_to_recursive_line_31_to_38_0_~d.base_BEFORE_CALL_21 v_func_to_recursive_line_31_to_38_0_~A.base_BEFORE_CALL_17)) (= (select (select |c_#memory_int| v_func_to_recursive_line_31_to_38_0_~r.base_BEFORE_CALL_18) 0) (select (select |c_#memory_int| v_func_to_recursive_line_31_to_38_0_~A.base_BEFORE_CALL_17) 0)) (not (= |ULTIMATE.start_main_~#B~0#1.base| v_func_to_recursive_line_31_to_38_0_~d.base_BEFORE_CALL_21)) (= (select (select |c_#memory_int| v_func_to_recursive_line_31_to_38_0_~d.base_BEFORE_CALL_21) |ULTIMATE.start_main_~#d~0#1.offset|) (select (select |c_#memory_int| |ULTIMATE.start_main_~#B~0#1.base|) |ULTIMATE.start_main_~#B~0#1.offset|)) (not (= |ULTIMATE.start_main_~#B~0#1.base| v_func_to_recursive_line_31_to_38_0_~r.base_BEFORE_CALL_18)) (not (= v_func_to_recursive_line_31_to_38_0_~r.base_BEFORE_CALL_18 v_func_to_recursive_line_31_to_38_0_~d.base_BEFORE_CALL_21)) (not (= v_func_to_recursive_line_31_to_38_0_~r.base_BEFORE_CALL_18 v_func_to_recursive_line_31_to_38_0_~A.base_BEFORE_CALL_17)))) is different from true [2023-12-02 14:48:24,713 WARN L876 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~#d~0#1.offset| Int) (v_func_to_recursive_line_31_to_38_0_~A.base_BEFORE_CALL_18 Int) (|ULTIMATE.start_main_~#B~0#1.offset| Int) (v_func_to_recursive_line_31_to_38_0_~r.base_BEFORE_CALL_19 Int) (|ULTIMATE.start_main_~#B~0#1.base| Int) (v_func_to_recursive_line_31_to_38_0_~d.base_BEFORE_CALL_22 Int)) (and (not (= |ULTIMATE.start_main_~#B~0#1.base| v_func_to_recursive_line_31_to_38_0_~d.base_BEFORE_CALL_22)) (not (= v_func_to_recursive_line_31_to_38_0_~r.base_BEFORE_CALL_19 v_func_to_recursive_line_31_to_38_0_~d.base_BEFORE_CALL_22)) (= (select (select |c_#memory_int| v_func_to_recursive_line_31_to_38_0_~d.base_BEFORE_CALL_22) |ULTIMATE.start_main_~#d~0#1.offset|) (select (select |c_#memory_int| |ULTIMATE.start_main_~#B~0#1.base|) |ULTIMATE.start_main_~#B~0#1.offset|)) (not (= v_func_to_recursive_line_31_to_38_0_~r.base_BEFORE_CALL_19 v_func_to_recursive_line_31_to_38_0_~A.base_BEFORE_CALL_18)) (= (select (select |c_#memory_int| v_func_to_recursive_line_31_to_38_0_~A.base_BEFORE_CALL_18) 0) (select (select |c_#memory_int| v_func_to_recursive_line_31_to_38_0_~r.base_BEFORE_CALL_19) 0)) (not (= |ULTIMATE.start_main_~#B~0#1.base| v_func_to_recursive_line_31_to_38_0_~A.base_BEFORE_CALL_18)) (not (= |ULTIMATE.start_main_~#B~0#1.base| v_func_to_recursive_line_31_to_38_0_~r.base_BEFORE_CALL_19)) (not (= v_func_to_recursive_line_31_to_38_0_~d.base_BEFORE_CALL_22 v_func_to_recursive_line_31_to_38_0_~A.base_BEFORE_CALL_18)))) is different from true [2023-12-02 14:48:24,948 INFO L349 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2023-12-02 14:48:24,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 64 [2023-12-02 14:48:24,960 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 56 treesize of output 56 [2023-12-02 14:48:31,902 WARN L876 $PredicateComparison]: unable to prove that (or (exists ((v_func_to_recursive_line_31_to_38_0_~r.base_BEFORE_CALL_21 Int) (v_func_to_recursive_line_31_to_38_0_~A.base_BEFORE_CALL_20 Int)) (and (exists ((func_to_recursive_line_31_to_38_0_~d.base Int)) (and (not (= v_func_to_recursive_line_31_to_38_0_~r.base_BEFORE_CALL_21 func_to_recursive_line_31_to_38_0_~d.base)) (exists ((|ULTIMATE.start_main_~#B~0#1.base| Int)) (and (not (= |ULTIMATE.start_main_~#B~0#1.base| v_func_to_recursive_line_31_to_38_0_~A.base_BEFORE_CALL_20)) (not (= |ULTIMATE.start_main_~#B~0#1.base| v_func_to_recursive_line_31_to_38_0_~r.base_BEFORE_CALL_21)) (not (= |ULTIMATE.start_main_~#B~0#1.base| func_to_recursive_line_31_to_38_0_~d.base)) (exists ((|ULTIMATE.start_main_~#d~0#1.offset| Int) (|ULTIMATE.start_main_~#B~0#1.offset| Int)) (let ((.cse1 (select |c_#memory_int| func_to_recursive_line_31_to_38_0_~d.base)) (.cse0 (select (select |c_#memory_int| |ULTIMATE.start_main_~#B~0#1.base|) |ULTIMATE.start_main_~#B~0#1.offset|))) (and (= .cse0 (select .cse1 |ULTIMATE.start_main_~#d~0#1.offset|)) (exists ((func_to_recursive_line_31_to_38_0_~d.offset Int)) (= (select .cse1 func_to_recursive_line_31_to_38_0_~d.offset) (* 2 .cse0)))))))) (not (= func_to_recursive_line_31_to_38_0_~d.base v_func_to_recursive_line_31_to_38_0_~A.base_BEFORE_CALL_20)))) (= (select (select |c_#memory_int| v_func_to_recursive_line_31_to_38_0_~A.base_BEFORE_CALL_20) 0) (select (select |c_#memory_int| v_func_to_recursive_line_31_to_38_0_~r.base_BEFORE_CALL_21) 0)) (not (= v_func_to_recursive_line_31_to_38_0_~r.base_BEFORE_CALL_21 v_func_to_recursive_line_31_to_38_0_~A.base_BEFORE_CALL_20)))) (exists ((v_func_to_recursive_line_31_to_38_0_~r.base_BEFORE_CALL_21 Int) (v_func_to_recursive_line_31_to_38_0_~A.base_BEFORE_CALL_20 Int)) (and (exists ((func_to_recursive_line_31_to_38_0_~d.base Int)) (and (not (= v_func_to_recursive_line_31_to_38_0_~r.base_BEFORE_CALL_21 func_to_recursive_line_31_to_38_0_~d.base)) (exists ((|ULTIMATE.start_main_~#B~0#1.base| Int)) (and (not (= |ULTIMATE.start_main_~#B~0#1.base| v_func_to_recursive_line_31_to_38_0_~A.base_BEFORE_CALL_20)) (not (= |ULTIMATE.start_main_~#B~0#1.base| v_func_to_recursive_line_31_to_38_0_~r.base_BEFORE_CALL_21)) (not (= |ULTIMATE.start_main_~#B~0#1.base| func_to_recursive_line_31_to_38_0_~d.base)) (exists ((|ULTIMATE.start_main_~#d~0#1.offset| Int) (|ULTIMATE.start_main_~#B~0#1.offset| Int)) (= (* 2 (select (select |c_#memory_int| |ULTIMATE.start_main_~#B~0#1.base|) |ULTIMATE.start_main_~#B~0#1.offset|)) (select (select |c_#memory_int| func_to_recursive_line_31_to_38_0_~d.base) |ULTIMATE.start_main_~#d~0#1.offset|))))) (not (= func_to_recursive_line_31_to_38_0_~d.base v_func_to_recursive_line_31_to_38_0_~A.base_BEFORE_CALL_20)))) (= (select (select |c_#memory_int| v_func_to_recursive_line_31_to_38_0_~A.base_BEFORE_CALL_20) 0) (select (select |c_#memory_int| v_func_to_recursive_line_31_to_38_0_~r.base_BEFORE_CALL_21) 0)) (not (= v_func_to_recursive_line_31_to_38_0_~r.base_BEFORE_CALL_21 v_func_to_recursive_line_31_to_38_0_~A.base_BEFORE_CALL_20)))) (exists ((v_func_to_recursive_line_31_to_38_0_~r.base_BEFORE_CALL_21 Int) (v_func_to_recursive_line_31_to_38_0_~A.base_BEFORE_CALL_20 Int)) (and (= (select (select |c_#memory_int| v_func_to_recursive_line_31_to_38_0_~A.base_BEFORE_CALL_20) 0) (select (select |c_#memory_int| v_func_to_recursive_line_31_to_38_0_~r.base_BEFORE_CALL_21) 0)) (not (= v_func_to_recursive_line_31_to_38_0_~r.base_BEFORE_CALL_21 v_func_to_recursive_line_31_to_38_0_~A.base_BEFORE_CALL_20)) (exists ((func_to_recursive_line_31_to_38_0_~d.base Int)) (and (not (= v_func_to_recursive_line_31_to_38_0_~r.base_BEFORE_CALL_21 func_to_recursive_line_31_to_38_0_~d.base)) (not (= func_to_recursive_line_31_to_38_0_~d.base v_func_to_recursive_line_31_to_38_0_~A.base_BEFORE_CALL_20)) (exists ((|ULTIMATE.start_main_~#B~0#1.base| Int)) (and (not (= |ULTIMATE.start_main_~#B~0#1.base| v_func_to_recursive_line_31_to_38_0_~A.base_BEFORE_CALL_20)) (exists ((|ULTIMATE.start_main_~#d~0#1.offset| Int) (|ULTIMATE.start_main_~#B~0#1.offset| Int)) (let ((.cse2 (select |c_#memory_int| func_to_recursive_line_31_to_38_0_~d.base))) (and (= (select (select |c_#memory_int| |ULTIMATE.start_main_~#B~0#1.base|) |ULTIMATE.start_main_~#B~0#1.offset|) (select .cse2 |ULTIMATE.start_main_~#d~0#1.offset|)) (exists ((func_to_recursive_line_31_to_38_0_~d.offset Int)) (and (exists ((v_arrayElimCell_37 Int)) (= (select .cse2 func_to_recursive_line_31_to_38_0_~d.offset) (* 2 v_arrayElimCell_37))) (not (= |ULTIMATE.start_main_~#d~0#1.offset| func_to_recursive_line_31_to_38_0_~d.offset))))))) (not (= |ULTIMATE.start_main_~#B~0#1.base| v_func_to_recursive_line_31_to_38_0_~r.base_BEFORE_CALL_21)) (not (= |ULTIMATE.start_main_~#B~0#1.base| func_to_recursive_line_31_to_38_0_~d.base))))))))) is different from true [2023-12-02 14:48:34,685 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 14:48:34,686 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 1 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 44 case distinctions, treesize of input 151 treesize of output 619 [2023-12-02 14:48:42,225 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 31 not checked. [2023-12-02 14:48:42,225 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:48:42,600 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:48:42,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137950459] [2023-12-02 14:48:42,601 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:48:42,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483373747] [2023-12-02 14:48:42,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [483373747] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:48:42,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1107012513] [2023-12-02 14:48:42,604 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2023-12-02 14:48:42,604 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 14:48:42,604 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:96) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-12-02 14:48:42,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 14:48:42,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2023-12-02 14:48:42,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552692385] [2023-12-02 14:48:42,606 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 14:48:42,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-02 14:48:42,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:48:42,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-02 14:48:42,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=264, Unknown=8, NotChecked=140, Total=462 [2023-12-02 14:48:42,608 INFO L87 Difference]: Start difference. First operand 76 states and 90 transitions. Second operand has 16 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 14:48:44,710 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 14:48:50,028 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 14:48:52,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 14:48:54,056 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 14:48:56,172 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 14:49:00,265 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 14:49:06,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 14:49:08,430 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 14:49:12,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 14:49:15,121 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 14:49:17,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 14:49:19,665 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 14:49:21,789 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 14:49:23,812 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 14:49:25,909 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 14:49:30,579 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 14:49:39,641 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 14:49:44,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:49:44,392 INFO L93 Difference]: Finished difference Result 102 states and 118 transitions. [2023-12-02 14:49:44,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-02 14:49:44,393 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 36 [2023-12-02 14:49:44,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:49:44,394 INFO L225 Difference]: With dead ends: 102 [2023-12-02 14:49:44,394 INFO L226 Difference]: Without dead ends: 100 [2023-12-02 14:49:44,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 27 SyntacticMatches, 4 SemanticMatches, 29 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 42.3s TimeCoverageRelationStatistics Valid=108, Invalid=591, Unknown=19, NotChecked=212, Total=930 [2023-12-02 14:49:44,396 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 24 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 6 mSolverCounterUnsat, 17 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 17 IncrementalHoareTripleChecker+Unknown, 440 IncrementalHoareTripleChecker+Unchecked, 35.9s IncrementalHoareTripleChecker+Time [2023-12-02 14:49:44,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 298 Invalid, 795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 332 Invalid, 17 Unknown, 440 Unchecked, 35.9s Time] [2023-12-02 14:49:44,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-12-02 14:49:44,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2023-12-02 14:49:44,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 63 states have (on average 1.0952380952380953) internal successors, (69), 67 states have internal predecessors, (69), 21 states have call successors, (21), 13 states have call predecessors, (21), 15 states have return successors, (26), 19 states have call predecessors, (26), 20 states have call successors, (26) [2023-12-02 14:49:44,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 116 transitions. [2023-12-02 14:49:44,420 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 116 transitions. Word has length 36 [2023-12-02 14:49:44,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:49:44,421 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 116 transitions. [2023-12-02 14:49:44,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 14:49:44,421 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 116 transitions. [2023-12-02 14:49:44,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-02 14:49:44,422 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:49:44,423 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:49:44,429 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_008f8606-741b-45b9-9d0f-57e5b42e9f89/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 14:49:44,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_008f8606-741b-45b9-9d0f-57e5b42e9f89/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:49:44,623 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:49:44,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:49:44,624 INFO L85 PathProgramCache]: Analyzing trace with hash -746292639, now seen corresponding path program 1 times [2023-12-02 14:49:44,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:49:44,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551587114] [2023-12-02 14:49:44,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:49:44,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:49:44,640 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:49:44,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1808012634] [2023-12-02 14:49:44,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:49:44,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:49:44,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_008f8606-741b-45b9-9d0f-57e5b42e9f89/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:49:44,642 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_008f8606-741b-45b9-9d0f-57e5b42e9f89/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:49:44,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_008f8606-741b-45b9-9d0f-57e5b42e9f89/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 14:49:44,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:49:44,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 106 conjunts are in the unsatisfiable core [2023-12-02 14:49:44,793 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:49:44,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:49:44,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:49:44,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:49:44,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:49:44,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:49:44,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:49:44,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:49:45,019 INFO L349 Elim1Store]: treesize reduction 219, result has 23.2 percent of original size [2023-12-02 14:49:45,020 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 530 treesize of output 184 [2023-12-02 14:49:45,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:49:45,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:49:45,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:49:45,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:49:45,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:49:45,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:49:45,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:49:45,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:49:45,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:49:45,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:49:45,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:49:45,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:49:45,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:49:45,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:49:45,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:49:45,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:49:45,178 INFO L349 Elim1Store]: treesize reduction 138, result has 12.1 percent of original size [2023-12-02 14:49:45,179 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 7 case distinctions, treesize of input 7754 treesize of output 7818 [2023-12-02 14:49:45,313 INFO L349 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2023-12-02 14:49:45,313 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 208 treesize of output 198 [2023-12-02 14:49:45,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-12-02 14:49:46,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-12-02 14:49:48,289 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 40 [2023-12-02 14:49:48,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-12-02 14:49:48,299 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-02 14:49:48,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-12-02 14:49:48,312 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-12-02 14:49:48,608 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 69 treesize of output 33 [2023-12-02 14:49:48,612 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-12-02 14:49:48,616 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-12-02 14:49:48,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-12-02 14:50:23,721 WARN L293 SmtUtils]: Spent 5.49s on a formula simplification that was a NOOP. DAG size: 250 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 14:51:02,748 WARN L293 SmtUtils]: Spent 16.97s on a formula simplification that was a NOOP. DAG size: 428 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 14:51:04,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:51:04,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:51:05,368 INFO L190 IndexEqualityManager]: detected not equals via solver