./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursified_nla-digbench/recursified_cohendiv-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee7b83a-900d-450e-ad4b-853491b2dabd/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee7b83a-900d-450e-ad4b-853491b2dabd/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee7b83a-900d-450e-ad4b-853491b2dabd/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee7b83a-900d-450e-ad4b-853491b2dabd/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursified_nla-digbench/recursified_cohendiv-ll.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee7b83a-900d-450e-ad4b-853491b2dabd/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee7b83a-900d-450e-ad4b-853491b2dabd/bin/utaipan-verify-SwPr7d2a91 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7c6261a52ba91bad3864c182e4633afd262bc5fe07cf18f92cb66db83623b9ae --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:49:30,606 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:49:30,727 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee7b83a-900d-450e-ad4b-853491b2dabd/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-24 23:49:30,740 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:49:30,741 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:49:30,788 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:49:30,789 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:49:30,790 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:49:30,791 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:49:30,796 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:49:30,796 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:49:30,797 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:49:30,798 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:49:30,800 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:49:30,800 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:49:30,800 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:49:30,801 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:49:30,801 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:49:30,802 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:49:30,803 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:49:30,803 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:49:30,804 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:49:30,805 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:49:30,806 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:49:30,806 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:49:30,806 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:49:30,807 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:49:30,807 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:49:30,808 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:49:30,808 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:49:30,821 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:49:30,821 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-24 23:49:30,822 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 23:49:30,822 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:49:30,823 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:49:30,823 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:49:30,824 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:49:30,824 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:49:30,824 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:49:30,824 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:49:30,825 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:49:30,825 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:49:30,826 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:49:30,826 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:49:30,826 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:49:30,826 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:49:30,827 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:49:30,827 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:49:30,827 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:49:30,827 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_5ee7b83a-900d-450e-ad4b-853491b2dabd/bin/utaipan-verify-SwPr7d2a91/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee7b83a-900d-450e-ad4b-853491b2dabd/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7c6261a52ba91bad3864c182e4633afd262bc5fe07cf18f92cb66db83623b9ae [2023-11-24 23:49:31,109 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:49:31,130 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:49:31,133 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:49:31,135 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:49:31,135 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:49:31,137 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee7b83a-900d-450e-ad4b-853491b2dabd/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/recursified_nla-digbench/recursified_cohendiv-ll.c [2023-11-24 23:49:34,177 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:49:34,463 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:49:34,464 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee7b83a-900d-450e-ad4b-853491b2dabd/sv-benchmarks/c/recursified_nla-digbench/recursified_cohendiv-ll.c [2023-11-24 23:49:34,472 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee7b83a-900d-450e-ad4b-853491b2dabd/bin/utaipan-verify-SwPr7d2a91/data/fa1c57464/5d12a6087ff2439facb38cfb3b6ec994/FLAGa9248ced5 [2023-11-24 23:49:34,485 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee7b83a-900d-450e-ad4b-853491b2dabd/bin/utaipan-verify-SwPr7d2a91/data/fa1c57464/5d12a6087ff2439facb38cfb3b6ec994 [2023-11-24 23:49:34,487 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:49:34,489 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:49:34,490 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:49:34,491 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:49:34,496 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:49:34,497 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:49:34" (1/1) ... [2023-11-24 23:49:34,498 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d0d6e66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:49:34, skipping insertion in model container [2023-11-24 23:49:34,498 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:49:34" (1/1) ... [2023-11-24 23:49:34,524 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:49:34,705 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:49:34,715 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:49:34,750 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:49:34,765 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:49:34,766 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:49:34 WrapperNode [2023-11-24 23:49:34,766 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:49:34,767 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:49:34,767 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:49:34,768 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:49:34,775 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:49:34" (1/1) ... [2023-11-24 23:49:34,789 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:49:34" (1/1) ... [2023-11-24 23:49:34,811 INFO L138 Inliner]: procedures = 17, calls = 85, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 81 [2023-11-24 23:49:34,811 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:49:34,812 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:49:34,812 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:49:34,812 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:49:34,822 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:49:34" (1/1) ... [2023-11-24 23:49:34,822 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:49:34" (1/1) ... [2023-11-24 23:49:34,826 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:49:34" (1/1) ... [2023-11-24 23:49:34,826 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:49:34" (1/1) ... [2023-11-24 23:49:34,835 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:49:34" (1/1) ... [2023-11-24 23:49:34,837 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:49:34" (1/1) ... [2023-11-24 23:49:34,839 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:49:34" (1/1) ... [2023-11-24 23:49:34,841 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:49:34" (1/1) ... [2023-11-24 23:49:34,844 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:49:34,845 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:49:34,845 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:49:34,846 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:49:34,846 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:49:34" (1/1) ... [2023-11-24 23:49:34,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:49:34,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee7b83a-900d-450e-ad4b-853491b2dabd/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:49:34,884 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee7b83a-900d-450e-ad4b-853491b2dabd/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:49:34,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee7b83a-900d-450e-ad4b-853491b2dabd/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:49:34,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:49:34,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:49:34,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:49:34,933 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_41_to_52_0 [2023-11-24 23:49:34,933 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_41_to_52_0 [2023-11-24 23:49:34,935 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_32_to_55_0 [2023-11-24 23:49:34,935 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_32_to_55_0 [2023-11-24 23:49:34,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 23:49:34,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:49:34,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:49:34,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 23:49:34,937 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-24 23:49:34,937 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-24 23:49:34,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:49:35,076 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:49:35,079 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:49:35,560 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:49:35,668 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:49:35,671 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-24 23:49:35,673 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:49:35 BoogieIcfgContainer [2023-11-24 23:49:35,673 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:49:35,679 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:49:35,680 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:49:35,684 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:49:35,685 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:49:34" (1/3) ... [2023-11-24 23:49:35,686 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f8d71bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:49:35, skipping insertion in model container [2023-11-24 23:49:35,686 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:49:34" (2/3) ... [2023-11-24 23:49:35,688 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f8d71bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:49:35, skipping insertion in model container [2023-11-24 23:49:35,689 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:49:35" (3/3) ... [2023-11-24 23:49:35,690 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_cohendiv-ll.c [2023-11-24 23:49:35,711 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:49:35,711 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2023-11-24 23:49:35,769 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:49:35,775 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@30f64f4b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:49:35,775 INFO L358 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2023-11-24 23:49:35,779 INFO L276 IsEmpty]: Start isEmpty. Operand has 94 states, 49 states have (on average 1.6938775510204083) internal successors, (83), 81 states have internal predecessors, (83), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-24 23:49:35,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-24 23:49:35,786 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:49:35,786 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 23:49:35,787 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_32_to_55_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-24 23:49:35,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:49:35,792 INFO L85 PathProgramCache]: Analyzing trace with hash 181248538, now seen corresponding path program 1 times [2023-11-24 23:49:35,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:49:35,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362140139] [2023-11-24 23:49:35,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:35,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:49:36,007 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:49:36,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [720549621] [2023-11-24 23:49:36,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:36,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:49:36,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee7b83a-900d-450e-ad4b-853491b2dabd/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:49:36,032 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee7b83a-900d-450e-ad4b-853491b2dabd/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:49:36,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee7b83a-900d-450e-ad4b-853491b2dabd/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 23:49:36,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:36,276 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 56 conjunts are in the unsatisfiable core [2023-11-24 23:49:36,286 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:49:36,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:36,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:36,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:36,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:36,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:36,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:36,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:36,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:36,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:36,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:36,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:36,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:36,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:36,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:36,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:36,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:36,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:36,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:36,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:36,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:36,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:36,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:36,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:36,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:36,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:36,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:36,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:36,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 43 [2023-11-24 23:49:36,622 INFO L349 Elim1Store]: treesize reduction 80, result has 1.2 percent of original size [2023-11-24 23:49:36,624 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 86 treesize of output 76 [2023-11-24 23:49:36,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-24 23:49:36,690 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-24 23:49:36,700 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-24 23:49:36,714 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2023-11-24 23:49:37,144 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-11-24 23:49:37,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 24 [2023-11-24 23:49:37,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:49:37,165 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:49:37,165 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:49:37,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362140139] [2023-11-24 23:49:37,166 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:49:37,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720549621] [2023-11-24 23:49:37,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720549621] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:49:37,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:49:37,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:49:37,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969444825] [2023-11-24 23:49:37,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:49:37,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 23:49:37,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:49:37,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 23:49:37,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:49:37,205 INFO L87 Difference]: Start difference. First operand has 94 states, 49 states have (on average 1.6938775510204083) internal successors, (83), 81 states have internal predecessors, (83), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 6 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:49:37,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:49:37,814 INFO L93 Difference]: Finished difference Result 217 states and 248 transitions. [2023-11-24 23:49:37,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 23:49:37,816 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-24 23:49:37,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:49:37,825 INFO L225 Difference]: With dead ends: 217 [2023-11-24 23:49:37,825 INFO L226 Difference]: Without dead ends: 120 [2023-11-24 23:49:37,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-24 23:49:37,832 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 45 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-24 23:49:37,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 389 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 23:49:37,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-11-24 23:49:37,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 106. [2023-11-24 23:49:37,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 60 states have (on average 1.6166666666666667) internal successors, (97), 91 states have internal predecessors, (97), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2023-11-24 23:49:37,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 122 transitions. [2023-11-24 23:49:37,895 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 122 transitions. Word has length 5 [2023-11-24 23:49:37,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:49:37,896 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 122 transitions. [2023-11-24 23:49:37,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:49:37,896 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 122 transitions. [2023-11-24 23:49:37,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-24 23:49:37,897 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:49:37,897 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-24 23:49:37,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee7b83a-900d-450e-ad4b-853491b2dabd/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-24 23:49:38,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee7b83a-900d-450e-ad4b-853491b2dabd/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-24 23:49:38,104 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_32_to_55_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-24 23:49:38,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:49:38,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1323737509, now seen corresponding path program 1 times [2023-11-24 23:49:38,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:49:38,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844454210] [2023-11-24 23:49:38,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:38,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:49:38,155 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:49:38,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [976240003] [2023-11-24 23:49:38,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:38,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:49:38,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee7b83a-900d-450e-ad4b-853491b2dabd/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:49:38,157 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee7b83a-900d-450e-ad4b-853491b2dabd/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:49:38,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee7b83a-900d-450e-ad4b-853491b2dabd/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 23:49:38,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:38,281 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-24 23:49:38,285 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:49:38,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:38,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:38,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:38,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:38,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:38,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:38,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:38,817 INFO L349 Elim1Store]: treesize reduction 325, result has 23.9 percent of original size [2023-11-24 23:49:38,817 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 2174 treesize of output 460 [2023-11-24 23:49:38,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:38,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:38,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:38,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:38,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:38,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:38,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:38,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:38,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:38,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:38,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:38,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:38,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:38,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:38,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:38,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:39,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:39,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:39,193 INFO L349 Elim1Store]: treesize reduction 204, result has 8.5 percent of original size [2023-11-24 23:49:39,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 5 select indices, 5 select index equivalence classes, 12 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 9 case distinctions, treesize of input 4121 treesize of output 4209 [2023-11-24 23:49:39,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:39,622 INFO L349 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2023-11-24 23:49:39,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 164 treesize of output 154 [2023-11-24 23:49:40,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-11-24 23:49:40,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-11-24 23:49:46,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:46,521 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 23:49:46,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:46,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:46,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:46,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:46,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:46,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:46,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:46,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:46,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:46,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:46,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:46,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:46,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:46,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:46,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:46,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:46,595 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 23:49:46,597 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 23:49:46,604 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 23:49:46,608 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 215 treesize of output 173 [2023-11-24 23:49:46,638 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-11-24 23:49:46,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-11-24 23:49:46,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-11-24 23:49:46,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-11-24 23:49:46,742 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 5 treesize of output 3 [2023-11-24 23:49:47,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:47,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:47,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:47,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:47,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:47,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:47,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:47,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:47,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:47,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:47,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:47,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:47,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:47,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:47,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:47,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:47,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:47,224 INFO L349 Elim1Store]: treesize reduction 110, result has 27.2 percent of original size [2023-11-24 23:49:47,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 10611 treesize of output 10586 [2023-11-24 23:49:47,490 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 837 treesize of output 829 [2023-11-24 23:49:47,589 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 829 treesize of output 821 [2023-11-24 23:49:47,679 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 821 treesize of output 819 [2023-11-24 23:49:47,753 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 819 treesize of output 817 [2023-11-24 23:49:47,831 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 817 treesize of output 815 [2023-11-24 23:49:48,429 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-11-24 23:49:48,576 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 23:49:48,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 81 [2023-11-24 23:49:48,779 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 23:49:48,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 87 [2023-11-24 23:49:48,932 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 23:49:48,933 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 88 [2023-11-24 23:49:49,172 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 23:49:49,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 83 [2023-11-24 23:49:49,423 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 5 treesize of output 3 [2023-11-24 23:49:49,469 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 5 treesize of output 3 [2023-11-24 23:49:49,542 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 22 treesize of output 16 [2023-11-24 23:49:49,577 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 7 treesize of output 5 [2023-11-24 23:49:49,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2023-11-24 23:49:49,685 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 7 treesize of output 5 [2023-11-24 23:49:49,716 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 15 treesize of output 11 [2023-11-24 23:49:49,733 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 15 treesize of output 11 [2023-11-24 23:49:49,992 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 23:49:49,993 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 112 treesize of output 146