./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/ms5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2738e5-afc0-464f-8ac8-5a5784ac5ced/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2738e5-afc0-464f-8ac8-5a5784ac5ced/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2738e5-afc0-464f-8ac8-5a5784ac5ced/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2738e5-afc0-464f-8ac8-5a5784ac5ced/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/ms5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2738e5-afc0-464f-8ac8-5a5784ac5ced/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2738e5-afc0-464f-8ac8-5a5784ac5ced/bin/utaipan-verify-DbMuA5NWw2 --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 5d49931b392f3e5db08af1630b313adf7396c4587f1a053ae0de1991b384d39a --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:22:46,252 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:22:46,342 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2738e5-afc0-464f-8ac8-5a5784ac5ced/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-02 12:22:46,349 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:22:46,349 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:22:46,387 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:22:46,388 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:22:46,390 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:22:46,391 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:22:46,391 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:22:46,391 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:22:46,392 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:22:46,392 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:22:46,392 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:22:46,393 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:22:46,393 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:22:46,396 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:22:46,396 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:22:46,397 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:22:46,397 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:22:46,397 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:22:46,402 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:22:46,402 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:22:46,402 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:22:46,403 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:22:46,403 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:22:46,403 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:22:46,403 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:22:46,404 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:22:46,404 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:22:46,404 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:22:46,404 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:22:46,405 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:22:46,405 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:22:46,407 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:22:46,407 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:22:46,408 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:22:46,408 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:22:46,408 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:22:46,408 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:22:46,409 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:22:46,409 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:22:46,409 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:22:46,410 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:22:46,410 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:22:46,410 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:22:46,411 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:22:46,411 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_ee2738e5-afc0-464f-8ac8-5a5784ac5ced/bin/utaipan-verify-DbMuA5NWw2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2738e5-afc0-464f-8ac8-5a5784ac5ced/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5d49931b392f3e5db08af1630b313adf7396c4587f1a053ae0de1991b384d39a [2024-11-02 12:22:46,834 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:22:46,866 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:22:46,869 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:22:46,871 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:22:46,872 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:22:46,873 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2738e5-afc0-464f-8ac8-5a5784ac5ced/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/array-fpi/ms5.c Unable to find full path for "g++" [2024-11-02 12:22:49,182 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:22:49,440 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:22:49,441 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2738e5-afc0-464f-8ac8-5a5784ac5ced/sv-benchmarks/c/array-fpi/ms5.c [2024-11-02 12:22:49,455 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2738e5-afc0-464f-8ac8-5a5784ac5ced/bin/utaipan-verify-DbMuA5NWw2/data/b45f89428/eff122572dc54c0bb4a4e35216677def/FLAG7d5d31719 [2024-11-02 12:22:49,477 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2738e5-afc0-464f-8ac8-5a5784ac5ced/bin/utaipan-verify-DbMuA5NWw2/data/b45f89428/eff122572dc54c0bb4a4e35216677def [2024-11-02 12:22:49,481 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:22:49,483 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:22:49,485 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:22:49,487 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:22:49,493 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:22:49,494 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:22:49" (1/1) ... [2024-11-02 12:22:49,495 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6352dfd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:22:49, skipping insertion in model container [2024-11-02 12:22:49,496 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:22:49" (1/1) ... [2024-11-02 12:22:49,524 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:22:49,758 WARN L251 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_ee2738e5-afc0-464f-8ac8-5a5784ac5ced/sv-benchmarks/c/array-fpi/ms5.c[586,599] [2024-11-02 12:22:49,793 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:22:49,804 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:22:49,817 WARN L251 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_ee2738e5-afc0-464f-8ac8-5a5784ac5ced/sv-benchmarks/c/array-fpi/ms5.c[586,599] [2024-11-02 12:22:49,825 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:22:49,846 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:22:49,847 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:22:49 WrapperNode [2024-11-02 12:22:49,847 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:22:49,848 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:22:49,848 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:22:49,849 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:22:49,857 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:22:49" (1/1) ... [2024-11-02 12:22:49,866 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:22:49" (1/1) ... [2024-11-02 12:22:49,888 INFO L138 Inliner]: procedures = 17, calls = 25, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2024-11-02 12:22:49,889 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:22:49,890 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:22:49,890 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:22:49,890 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:22:49,899 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:22:49" (1/1) ... [2024-11-02 12:22:49,899 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:22:49" (1/1) ... [2024-11-02 12:22:49,902 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:22:49" (1/1) ... [2024-11-02 12:22:49,902 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:22:49" (1/1) ... [2024-11-02 12:22:49,910 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:22:49" (1/1) ... [2024-11-02 12:22:49,914 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:22:49" (1/1) ... [2024-11-02 12:22:49,915 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:22:49" (1/1) ... [2024-11-02 12:22:49,916 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:22:49" (1/1) ... [2024-11-02 12:22:49,918 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:22:49,919 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:22:49,920 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:22:49,920 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:22:49,921 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:22:49" (1/1) ... [2024-11-02 12:22:49,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:22:49,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2738e5-afc0-464f-8ac8-5a5784ac5ced/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:22:49,952 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2738e5-afc0-464f-8ac8-5a5784ac5ced/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:22:49,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2738e5-afc0-464f-8ac8-5a5784ac5ced/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:22:49,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:22:49,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:22:49,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-02 12:22:49,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-02 12:22:49,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-02 12:22:49,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:22:49,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:22:49,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-02 12:22:49,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-02 12:22:50,077 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:22:50,079 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:22:50,261 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-02 12:22:50,262 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:22:50,331 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:22:50,332 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-02 12:22:50,332 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:22:50 BoogieIcfgContainer [2024-11-02 12:22:50,332 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:22:50,337 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:22:50,337 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:22:50,342 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:22:50,342 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:22:49" (1/3) ... [2024-11-02 12:22:50,343 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@482ceedf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:22:50, skipping insertion in model container [2024-11-02 12:22:50,344 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:22:49" (2/3) ... [2024-11-02 12:22:50,345 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@482ceedf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:22:50, skipping insertion in model container [2024-11-02 12:22:50,345 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:22:50" (3/3) ... [2024-11-02 12:22:50,346 INFO L112 eAbstractionObserver]: Analyzing ICFG ms5.c [2024-11-02 12:22:50,366 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:22:50,366 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 12:22:50,439 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:22:50,448 INFO L333 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, 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;@5a159414, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:22:50,449 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 12:22:50,455 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:22:50,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-02 12:22:50,462 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:22:50,463 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-02 12:22:50,464 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:22:50,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:22:50,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1569259291, now seen corresponding path program 1 times [2024-11-02 12:22:50,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:22:50,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218535708] [2024-11-02 12:22:50,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:22:50,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:22:50,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:22:50,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:22:50,847 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:22:50,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218535708] [2024-11-02 12:22:50,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218535708] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:22:50,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:22:50,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:22:50,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595532717] [2024-11-02 12:22:50,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:22:50,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:22:50,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:22:50,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:22:50,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:22:50,888 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:22:50,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:22:50,949 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2024-11-02 12:22:50,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:22:50,952 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-02 12:22:50,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:22:50,960 INFO L225 Difference]: With dead ends: 18 [2024-11-02 12:22:50,961 INFO L226 Difference]: Without dead ends: 8 [2024-11-02 12:22:50,964 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:22:50,968 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:22:50,970 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:22:50,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2024-11-02 12:22:51,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2024-11-02 12:22:51,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:22:51,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2024-11-02 12:22:51,010 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 6 [2024-11-02 12:22:51,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:22:51,011 INFO L471 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2024-11-02 12:22:51,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:22:51,012 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2024-11-02 12:22:51,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-02 12:22:51,013 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:22:51,014 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:22:51,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:22:51,014 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:22:51,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:22:51,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1413400264, now seen corresponding path program 1 times [2024-11-02 12:22:51,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:22:51,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449571699] [2024-11-02 12:22:51,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:22:51,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:22:51,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:22:51,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-02 12:22:51,208 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:22:51,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449571699] [2024-11-02 12:22:51,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449571699] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:22:51,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:22:51,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:22:51,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203726131] [2024-11-02 12:22:51,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:22:51,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:22:51,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:22:51,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:22:51,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:22:51,212 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:22:51,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:22:51,238 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2024-11-02 12:22:51,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:22:51,239 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-02 12:22:51,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:22:51,240 INFO L225 Difference]: With dead ends: 12 [2024-11-02 12:22:51,240 INFO L226 Difference]: Without dead ends: 9 [2024-11-02 12:22:51,240 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:22:51,242 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 5 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:22:51,243 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 4 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:22:51,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2024-11-02 12:22:51,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2024-11-02 12:22:51,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:22:51,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2024-11-02 12:22:51,247 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 7 [2024-11-02 12:22:51,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:22:51,247 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2024-11-02 12:22:51,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:22:51,248 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2024-11-02 12:22:51,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-02 12:22:51,248 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:22:51,248 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:22:51,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-02 12:22:51,249 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:22:51,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:22:51,250 INFO L85 PathProgramCache]: Analyzing trace with hash -865774635, now seen corresponding path program 1 times [2024-11-02 12:22:51,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:22:51,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429556641] [2024-11-02 12:22:51,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:22:51,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:22:51,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:22:51,645 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-02 12:22:51,645 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:22:51,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429556641] [2024-11-02 12:22:51,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429556641] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:22:51,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925614577] [2024-11-02 12:22:51,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:22:51,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:22:51,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2738e5-afc0-464f-8ac8-5a5784ac5ced/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:22:51,649 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2738e5-afc0-464f-8ac8-5a5784ac5ced/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:22:51,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2738e5-afc0-464f-8ac8-5a5784ac5ced/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-02 12:22:51,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:22:51,747 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-02 12:22:51,753 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:22:51,838 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-02 12:22:51,879 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-02 12:22:51,879 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:22:52,007 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-02 12:22:52,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 37 treesize of output 51 [2024-11-02 12:22:52,043 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-02 12:22:52,043 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 1 case distinctions, treesize of input 9 treesize of output 8 [2024-11-02 12:22:52,122 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 36 treesize of output 24 [2024-11-02 12:22:52,135 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 [2024-11-02 12:22:52,179 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-02 12:22:52,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925614577] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:22:52,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1003295061] [2024-11-02 12:22:52,201 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2024-11-02 12:22:52,201 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:22:52,205 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:22:52,210 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:22:52,211 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:22:52,921 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 12:22:53,205 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '136#(exists ((|v_ULTIMATE.start_main_~#sum~0#1.offset_25| Int)) (<= (+ (* ~N~0 4) 1) (select (select |#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |v_ULTIMATE.start_main_~#sum~0#1.offset_25|)))' at error location [2024-11-02 12:22:53,205 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-02 12:22:53,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-02 12:22:53,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-02 12:22:53,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521803277] [2024-11-02 12:22:53,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-02 12:22:53,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-02 12:22:53,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:22:53,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-02 12:22:53,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2024-11-02 12:22:53,212 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 10 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:22:53,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:22:53,307 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2024-11-02 12:22:53,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-02 12:22:53,308 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-02 12:22:53,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:22:53,309 INFO L225 Difference]: With dead ends: 13 [2024-11-02 12:22:53,310 INFO L226 Difference]: Without dead ends: 10 [2024-11-02 12:22:53,310 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2024-11-02 12:22:53,314 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 6 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:22:53,314 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 12 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:22:53,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2024-11-02 12:22:53,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2024-11-02 12:22:53,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:22:53,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2024-11-02 12:22:53,323 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 8 [2024-11-02 12:22:53,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:22:53,324 INFO L471 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2024-11-02 12:22:53,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:22:53,324 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2024-11-02 12:22:53,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-02 12:22:53,325 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:22:53,326 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:22:53,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2738e5-afc0-464f-8ac8-5a5784ac5ced/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-02 12:22:53,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2738e5-afc0-464f-8ac8-5a5784ac5ced/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:22:53,527 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:22:53,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:22:53,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1069249320, now seen corresponding path program 2 times [2024-11-02 12:22:53,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:22:53,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363630078] [2024-11-02 12:22:53,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:22:53,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:22:53,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:22:53,700 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:22:53,700 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:22:53,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363630078] [2024-11-02 12:22:53,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363630078] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:22:53,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785704951] [2024-11-02 12:22:53,701 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-02 12:22:53,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:22:53,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2738e5-afc0-464f-8ac8-5a5784ac5ced/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:22:53,704 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2738e5-afc0-464f-8ac8-5a5784ac5ced/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:22:53,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2738e5-afc0-464f-8ac8-5a5784ac5ced/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-02 12:22:53,776 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-02 12:22:53,777 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-02 12:22:53,778 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-02 12:22:53,779 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:22:53,826 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:22:53,826 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:22:53,860 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:22:53,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785704951] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:22:53,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1441972850] [2024-11-02 12:22:53,863 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2024-11-02 12:22:53,863 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:22:53,864 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:22:53,864 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:22:53,864 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:22:54,262 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 12:22:54,505 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '234#(exists ((|v_ULTIMATE.start_main_~#sum~0#1.offset_27| Int)) (<= (+ (* ~N~0 4) 1) (select (select |#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |v_ULTIMATE.start_main_~#sum~0#1.offset_27|)))' at error location [2024-11-02 12:22:54,505 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-02 12:22:54,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-02 12:22:54,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-02 12:22:54,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395580688] [2024-11-02 12:22:54,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-02 12:22:54,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-02 12:22:54,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:22:54,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-02 12:22:54,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2024-11-02 12:22:54,508 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 10 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:22:54,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:22:54,577 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2024-11-02 12:22:54,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-02 12:22:54,578 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-02 12:22:54,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:22:54,579 INFO L225 Difference]: With dead ends: 17 [2024-11-02 12:22:54,579 INFO L226 Difference]: Without dead ends: 11 [2024-11-02 12:22:54,580 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2024-11-02 12:22:54,580 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:22:54,581 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:22:54,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2024-11-02 12:22:54,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2024-11-02 12:22:54,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:22:54,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2024-11-02 12:22:54,587 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 9 [2024-11-02 12:22:54,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:22:54,589 INFO L471 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2024-11-02 12:22:54,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:22:54,590 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2024-11-02 12:22:54,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-02 12:22:54,591 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:22:54,591 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-02 12:22:54,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2738e5-afc0-464f-8ac8-5a5784ac5ced/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-02 12:22:54,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2738e5-afc0-464f-8ac8-5a5784ac5ced/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:22:54,792 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:22:54,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:22:54,793 INFO L85 PathProgramCache]: Analyzing trace with hash -732622939, now seen corresponding path program 3 times [2024-11-02 12:22:54,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:22:54,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841554386] [2024-11-02 12:22:54,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:22:54,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:22:54,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:22:55,671 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:22:55,671 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:22:55,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841554386] [2024-11-02 12:22:55,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841554386] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:22:55,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833704836] [2024-11-02 12:22:55,672 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-02 12:22:55,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:22:55,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2738e5-afc0-464f-8ac8-5a5784ac5ced/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:22:55,673 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2738e5-afc0-464f-8ac8-5a5784ac5ced/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:22:55,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2738e5-afc0-464f-8ac8-5a5784ac5ced/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-02 12:22:55,745 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-02 12:22:55,746 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-02 12:22:55,747 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-02 12:22:55,749 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:22:55,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 68 treesize of output 55 [2024-11-02 12:22:55,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 76 [2024-11-02 12:22:55,851 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 0 case distinctions, treesize of input 41 treesize of output 5 [2024-11-02 12:22:56,490 INFO L349 Elim1Store]: treesize reduction 63, result has 52.6 percent of original size [2024-11-02 12:22:56,491 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 149 treesize of output 139 [2024-11-02 12:22:57,002 INFO L349 Elim1Store]: treesize reduction 65, result has 51.1 percent of original size [2024-11-02 12:22:57,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 111 treesize of output 128 [2024-11-02 12:22:57,598 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-02 12:22:57,599 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 136 treesize of output 108 [2024-11-02 12:22:57,669 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-02 12:22:57,669 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:22:57,804 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 [2024-11-02 12:22:58,963 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-02 12:22:58,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833704836] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:22:58,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1451078277] [2024-11-02 12:22:58,966 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2024-11-02 12:22:58,966 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:22:58,970 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:22:58,971 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:22:58,971 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:22:59,336 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 12:22:59,718 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '356#(exists ((|v_ULTIMATE.start_main_~#sum~0#1.offset_29| Int)) (<= (+ (* ~N~0 4) 1) (select (select |#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |v_ULTIMATE.start_main_~#sum~0#1.offset_29|)))' at error location [2024-11-02 12:22:59,718 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-02 12:22:59,718 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-02 12:22:59,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 18 [2024-11-02 12:22:59,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045975033] [2024-11-02 12:22:59,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-02 12:22:59,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-02 12:22:59,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:22:59,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-02 12:22:59,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=432, Unknown=1, NotChecked=0, Total=506 [2024-11-02 12:22:59,723 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 18 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:23:02,437 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-02 12:23:10,541 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] [2024-11-02 12:23:11,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:23:11,124 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2024-11-02 12:23:11,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-02 12:23:11,125 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-02 12:23:11,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:23:11,125 INFO L225 Difference]: With dead ends: 17 [2024-11-02 12:23:11,125 INFO L226 Difference]: Without dead ends: 13 [2024-11-02 12:23:11,126 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=150, Invalid=838, Unknown=4, NotChecked=0, Total=992 [2024-11-02 12:23:11,127 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 5 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 12 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-02 12:23:11,127 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 21 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 96 Invalid, 2 Unknown, 0 Unchecked, 4.3s Time] [2024-11-02 12:23:11,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2024-11-02 12:23:11,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2024-11-02 12:23:11,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:23:11,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2024-11-02 12:23:11,140 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2024-11-02 12:23:11,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:23:11,141 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2024-11-02 12:23:11,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:23:11,141 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2024-11-02 12:23:11,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-02 12:23:11,142 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:23:11,142 INFO L215 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1] [2024-11-02 12:23:11,163 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2738e5-afc0-464f-8ac8-5a5784ac5ced/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-02 12:23:11,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2738e5-afc0-464f-8ac8-5a5784ac5ced/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:23:11,347 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:23:11,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:23:11,347 INFO L85 PathProgramCache]: Analyzing trace with hash 322731013, now seen corresponding path program 4 times [2024-11-02 12:23:11,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:23:11,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150311613] [2024-11-02 12:23:11,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:23:11,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:23:11,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:23:11,514 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:23:11,514 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:23:11,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150311613] [2024-11-02 12:23:11,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150311613] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:23:11,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956021473] [2024-11-02 12:23:11,515 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-02 12:23:11,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:23:11,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2738e5-afc0-464f-8ac8-5a5784ac5ced/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:23:11,518 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2738e5-afc0-464f-8ac8-5a5784ac5ced/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:23:11,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2738e5-afc0-464f-8ac8-5a5784ac5ced/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-02 12:23:11,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:23:11,592 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-02 12:23:11,594 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:23:11,659 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-02 12:23:11,659 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:23:11,706 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-02 12:23:11,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956021473] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:23:11,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1853455662] [2024-11-02 12:23:11,709 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2024-11-02 12:23:11,709 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:23:11,709 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:23:11,709 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:23:11,710 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:23:12,001 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 12:23:12,225 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '505#(exists ((|v_ULTIMATE.start_main_~#sum~0#1.offset_31| Int)) (<= (+ (* ~N~0 4) 1) (select (select |#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |v_ULTIMATE.start_main_~#sum~0#1.offset_31|)))' at error location [2024-11-02 12:23:12,226 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-02 12:23:12,226 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-02 12:23:12,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 14 [2024-11-02 12:23:12,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734751881] [2024-11-02 12:23:12,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-02 12:23:12,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-02 12:23:12,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:23:12,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-02 12:23:12,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2024-11-02 12:23:12,230 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:23:12,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:23:12,323 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2024-11-02 12:23:12,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-02 12:23:12,324 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-02 12:23:12,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:23:12,324 INFO L225 Difference]: With dead ends: 22 [2024-11-02 12:23:12,325 INFO L226 Difference]: Without dead ends: 14 [2024-11-02 12:23:12,325 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2024-11-02 12:23:12,326 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:23:12,326 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:23:12,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2024-11-02 12:23:12,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2024-11-02 12:23:12,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:23:12,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2024-11-02 12:23:12,335 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 12 [2024-11-02 12:23:12,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:23:12,336 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2024-11-02 12:23:12,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:23:12,336 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2024-11-02 12:23:12,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-02 12:23:12,336 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:23:12,337 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1] [2024-11-02 12:23:12,358 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2738e5-afc0-464f-8ac8-5a5784ac5ced/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-02 12:23:12,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2738e5-afc0-464f-8ac8-5a5784ac5ced/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:23:12,537 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:23:12,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:23:12,538 INFO L85 PathProgramCache]: Analyzing trace with hash 10611224, now seen corresponding path program 5 times [2024-11-02 12:23:12,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:23:12,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182860705] [2024-11-02 12:23:12,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:23:12,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:23:12,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:23:12,698 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:23:12,699 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:23:12,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182860705] [2024-11-02 12:23:12,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182860705] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:23:12,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60102000] [2024-11-02 12:23:12,699 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-02 12:23:12,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:23:12,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2738e5-afc0-464f-8ac8-5a5784ac5ced/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:23:12,702 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2738e5-afc0-464f-8ac8-5a5784ac5ced/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:23:12,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2738e5-afc0-464f-8ac8-5a5784ac5ced/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-02 12:23:12,782 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-02 12:23:12,782 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-02 12:23:12,783 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-02 12:23:12,784 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:23:12,867 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:23:12,867 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:23:12,930 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:23:12,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60102000] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:23:12,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2109220578] [2024-11-02 12:23:12,932 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2024-11-02 12:23:12,932 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:23:12,932 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:23:12,933 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:23:12,933 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:23:13,235 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 12:23:13,575 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '661#(exists ((|v_ULTIMATE.start_main_~#sum~0#1.offset_33| Int) (|v_ULTIMATE.start_main_~i~0#1_130| Int)) (and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 |v_ULTIMATE.start_main_~i~0#1_130|) (<= (+ (* ~N~0 4) 1) (select (select |#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) 0)) (= |v_ULTIMATE.start_main_~#sum~0#1.offset_33| 0) (<= 0 |v_ULTIMATE.start_main_~i~0#1_130|)))' at error location [2024-11-02 12:23:13,575 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-02 12:23:13,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-02 12:23:13,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 16 [2024-11-02 12:23:13,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720612295] [2024-11-02 12:23:13,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-02 12:23:13,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-02 12:23:13,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:23:13,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-02 12:23:13,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2024-11-02 12:23:13,578 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 16 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:23:13,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:23:13,707 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2024-11-02 12:23:13,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-02 12:23:13,708 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-02 12:23:13,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:23:13,708 INFO L225 Difference]: With dead ends: 23 [2024-11-02 12:23:13,708 INFO L226 Difference]: Without dead ends: 15 [2024-11-02 12:23:13,709 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 6 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2024-11-02 12:23:13,710 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:23:13,710 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:23:13,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-11-02 12:23:13,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-11-02 12:23:13,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:23:13,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2024-11-02 12:23:13,722 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2024-11-02 12:23:13,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:23:13,723 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2024-11-02 12:23:13,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:23:13,723 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2024-11-02 12:23:13,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-02 12:23:13,723 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:23:13,724 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1] [2024-11-02 12:23:13,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2738e5-afc0-464f-8ac8-5a5784ac5ced/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-02 12:23:13,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2738e5-afc0-464f-8ac8-5a5784ac5ced/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-02 12:23:13,925 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:23:13,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:23:13,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1075167643, now seen corresponding path program 6 times [2024-11-02 12:23:13,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:23:13,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447285074] [2024-11-02 12:23:13,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:23:13,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:23:14,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:23:15,524 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:23:15,524 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:23:15,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447285074] [2024-11-02 12:23:15,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447285074] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:23:15,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411981702] [2024-11-02 12:23:15,525 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-02 12:23:15,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:23:15,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2738e5-afc0-464f-8ac8-5a5784ac5ced/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:23:15,527 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2738e5-afc0-464f-8ac8-5a5784ac5ced/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:23:15,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2738e5-afc0-464f-8ac8-5a5784ac5ced/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-02 12:23:15,604 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-02 12:23:15,604 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-02 12:23:15,605 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-02 12:23:15,609 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:23:15,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 74 treesize of output 61 [2024-11-02 12:23:15,626 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 17 treesize of output 16 [2024-11-02 12:23:15,645 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 19 treesize of output 18 [2024-11-02 12:23:15,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 133 treesize of output 117 [2024-11-02 12:23:15,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 145 [2024-11-02 12:23:15,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 63 [2024-11-02 12:23:16,068 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 218 treesize of output 194 [2024-11-02 12:23:16,083 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-02 12:23:16,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 194 treesize of output 212 [2024-11-02 12:23:16,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 213 treesize of output 148