./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursified_nla-digbench/recursified_geo1-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76240f34-b253-4e0f-97a9-1ec9f06b68e0/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76240f34-b253-4e0f-97a9-1ec9f06b68e0/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76240f34-b253-4e0f-97a9-1ec9f06b68e0/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76240f34-b253-4e0f-97a9-1ec9f06b68e0/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursified_nla-digbench/recursified_geo1-ll.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76240f34-b253-4e0f-97a9-1ec9f06b68e0/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76240f34-b253-4e0f-97a9-1ec9f06b68e0/bin/utaipan-verify-sOmjnqqW8E --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 4db0bca5538daf39b8ff60992164692d97581cce14eb7bcb8400899fae1cb0e3 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 04:20:13,341 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 04:20:13,403 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76240f34-b253-4e0f-97a9-1ec9f06b68e0/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 04:20:13,408 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 04:20:13,408 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 04:20:13,430 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 04:20:13,431 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 04:20:13,431 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 04:20:13,431 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 04:20:13,432 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 04:20:13,432 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 04:20:13,432 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 04:20:13,432 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 04:20:13,432 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 04:20:13,432 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 04:20:13,432 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 04:20:13,432 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 04:20:13,432 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 04:20:13,433 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 04:20:13,433 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 04:20:13,433 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 04:20:13,433 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 04:20:13,433 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 04:20:13,433 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 04:20:13,434 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 04:20:13,434 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 04:20:13,434 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 04:20:13,434 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 04:20:13,434 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 04:20:13,434 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 04:20:13,434 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 04:20:13,434 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 04:20:13,434 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 04:20:13,434 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 04:20:13,435 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 04:20:13,435 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 04:20:13,435 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 04:20:13,435 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 04:20:13,435 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:20:13,435 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 04:20:13,435 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 04:20:13,435 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 04:20:13,435 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 04:20:13,436 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 04:20:13,436 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 04:20:13,436 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 04:20:13,436 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 04:20:13,436 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_76240f34-b253-4e0f-97a9-1ec9f06b68e0/bin/utaipan-verify-sOmjnqqW8E 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 -> 4db0bca5538daf39b8ff60992164692d97581cce14eb7bcb8400899fae1cb0e3 [2024-11-14 04:20:13,707 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 04:20:13,716 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 04:20:13,718 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 04:20:13,720 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 04:20:13,720 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 04:20:13,722 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76240f34-b253-4e0f-97a9-1ec9f06b68e0/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/recursified_nla-digbench/recursified_geo1-ll.c Unable to find full path for "g++" [2024-11-14 04:20:16,028 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 04:20:16,401 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 04:20:16,402 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76240f34-b253-4e0f-97a9-1ec9f06b68e0/sv-benchmarks/c/recursified_nla-digbench/recursified_geo1-ll.c [2024-11-14 04:20:16,416 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76240f34-b253-4e0f-97a9-1ec9f06b68e0/bin/utaipan-verify-sOmjnqqW8E/data/0520ceeaa/ca8583ab38cb4369945b5dc90bfe7053/FLAG88cb73ec5 [2024-11-14 04:20:16,445 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76240f34-b253-4e0f-97a9-1ec9f06b68e0/bin/utaipan-verify-sOmjnqqW8E/data/0520ceeaa/ca8583ab38cb4369945b5dc90bfe7053 [2024-11-14 04:20:16,449 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 04:20:16,452 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 04:20:16,455 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 04:20:16,455 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 04:20:16,461 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 04:20:16,463 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:20:16" (1/1) ... [2024-11-14 04:20:16,466 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15802483 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:20:16, skipping insertion in model container [2024-11-14 04:20:16,466 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:20:16" (1/1) ... [2024-11-14 04:20:16,491 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 04:20:16,721 WARN L250 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_76240f34-b253-4e0f-97a9-1ec9f06b68e0/sv-benchmarks/c/recursified_nla-digbench/recursified_geo1-ll.c[1076,1089] [2024-11-14 04:20:16,756 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:20:16,777 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 04:20:16,791 WARN L250 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_76240f34-b253-4e0f-97a9-1ec9f06b68e0/sv-benchmarks/c/recursified_nla-digbench/recursified_geo1-ll.c[1076,1089] [2024-11-14 04:20:16,803 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:20:16,822 INFO L204 MainTranslator]: Completed translation [2024-11-14 04:20:16,823 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:20:16 WrapperNode [2024-11-14 04:20:16,823 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 04:20:16,824 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 04:20:16,825 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 04:20:16,825 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 04:20:16,834 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:20:16" (1/1) ... [2024-11-14 04:20:16,843 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:20:16" (1/1) ... [2024-11-14 04:20:16,866 INFO L138 Inliner]: procedures = 16, calls = 55, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 66 [2024-11-14 04:20:16,866 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 04:20:16,867 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 04:20:16,867 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 04:20:16,867 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 04:20:16,877 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:20:16" (1/1) ... [2024-11-14 04:20:16,877 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:20:16" (1/1) ... [2024-11-14 04:20:16,884 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:20:16" (1/1) ... [2024-11-14 04:20:16,884 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:20:16" (1/1) ... [2024-11-14 04:20:16,899 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:20:16" (1/1) ... [2024-11-14 04:20:16,906 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:20:16" (1/1) ... [2024-11-14 04:20:16,910 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:20:16" (1/1) ... [2024-11-14 04:20:16,912 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:20:16" (1/1) ... [2024-11-14 04:20:16,918 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 04:20:16,921 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 04:20:16,921 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 04:20:16,921 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 04:20:16,924 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:20:16" (1/1) ... [2024-11-14 04:20:16,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:20:16,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76240f34-b253-4e0f-97a9-1ec9f06b68e0/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:20:16,973 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76240f34-b253-4e0f-97a9-1ec9f06b68e0/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 04:20:16,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76240f34-b253-4e0f-97a9-1ec9f06b68e0/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 04:20:17,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 04:20:17,025 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-14 04:20:17,025 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-14 04:20:17,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 04:20:17,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-14 04:20:17,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-14 04:20:17,026 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_30_to_38_0 [2024-11-14 04:20:17,026 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_30_to_38_0 [2024-11-14 04:20:17,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 04:20:17,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 04:20:17,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-14 04:20:17,027 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-14 04:20:17,027 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-14 04:20:17,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-14 04:20:17,164 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 04:20:17,167 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 04:20:17,472 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-14 04:20:17,472 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 04:20:17,526 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 04:20:17,526 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-14 04:20:17,527 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:20:17 BoogieIcfgContainer [2024-11-14 04:20:17,527 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 04:20:17,531 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 04:20:17,531 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 04:20:17,538 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 04:20:17,538 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 04:20:16" (1/3) ... [2024-11-14 04:20:17,539 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29309746 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:20:17, skipping insertion in model container [2024-11-14 04:20:17,539 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:20:16" (2/3) ... [2024-11-14 04:20:17,540 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29309746 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:20:17, skipping insertion in model container [2024-11-14 04:20:17,540 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:20:17" (3/3) ... [2024-11-14 04:20:17,542 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_geo1-ll.c [2024-11-14 04:20:17,566 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 04:20:17,568 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG recursified_geo1-ll.c that has 4 procedures, 26 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-14 04:20:17,662 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 04:20:17,684 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;@7cdc69c8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 04:20:17,685 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 04:20:17,691 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 17 states have internal predecessors, (19), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-14 04:20:17,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-14 04:20:17,703 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:20:17,705 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:20:17,705 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:20:17,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:20:17,711 INFO L85 PathProgramCache]: Analyzing trace with hash 498652963, now seen corresponding path program 1 times [2024-11-14 04:20:17,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:20:17,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369602708] [2024-11-14 04:20:17,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:20:17,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:20:18,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 04:20:18,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2025605941] [2024-11-14 04:20:18,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:20:18,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:20:18,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76240f34-b253-4e0f-97a9-1ec9f06b68e0/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:20:18,109 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76240f34-b253-4e0f-97a9-1ec9f06b68e0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:20:18,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76240f34-b253-4e0f-97a9-1ec9f06b68e0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 04:20:18,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:20:18,361 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-14 04:20:18,382 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:20:18,603 INFO L349 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2024-11-14 04:20:18,605 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 61 treesize of output 53 [2024-11-14 04:20:18,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2024-11-14 04:20:18,654 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-14 04:20:19,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:20:19,234 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 33 [2024-11-14 04:20:19,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 33 [2024-11-14 04:20:19,743 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 16 [2024-11-14 04:20:19,876 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:20:19,878 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:20:20,804 WARN L851 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~#x~0#1.offset| Int) (v_ArrVal_49 (Array Int Int))) (= (mod (let ((.cse1 (store (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#x~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#x~0#1.base|) |ULTIMATE.start_main_~#x~0#1.offset| 1)))) (store .cse2 |c_ULTIMATE.start_main_~#y~0#1.base| (store (select .cse2 |c_ULTIMATE.start_main_~#y~0#1.base|) |c_ULTIMATE.start_main_~#y~0#1.offset| (select (select .cse2 |c_ULTIMATE.start_main_~#z~0#1.base|) |c_ULTIMATE.start_main_~#z~0#1.offset|)))) |c_ULTIMATE.start_main_~#c~0#1.base| v_ArrVal_49))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~#x~0#1.base|) |ULTIMATE.start_main_~#x~0#1.offset|))) (+ (* 18446744073709551615 .cse0) (* 18446744073709551615 (select (select .cse1 |c_ULTIMATE.start_main_~#y~0#1.base|) |c_ULTIMATE.start_main_~#y~0#1.offset|)) (* (select (select .cse1 |c_ULTIMATE.start_main_~#z~0#1.base|) |c_ULTIMATE.start_main_~#z~0#1.offset|) .cse0) 1))) 18446744073709551616) 0)) is different from false [2024-11-14 04:20:20,897 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:20:20,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369602708] [2024-11-14 04:20:20,898 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 04:20:20,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025605941] [2024-11-14 04:20:20,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025605941] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:20:20,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [469924310] [2024-11-14 04:20:20,933 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-14 04:20:20,933 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:20:20,937 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:20:20,944 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:20:20,944 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:20:22,174 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 170 for LOIs [2024-11-14 04:20:22,310 INFO L197 IcfgInterpreter]: Interpreting procedure func_to_recursive_line_30_to_38_0 with input of size 126 for LOIs [2024-11-14 04:20:22,525 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 131 for LOIs [2024-11-14 04:20:22,664 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:20:57,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [469924310] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:20:57,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:20:57,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [12] total 24 [2024-11-14 04:20:57,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029597067] [2024-11-14 04:20:57,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:20:57,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-14 04:20:57,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:20:57,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-14 04:20:57,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=754, Unknown=9, NotChecked=56, Total=930 [2024-11-14 04:20:57,097 INFO L87 Difference]: Start difference. First operand has 26 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 17 states have internal predecessors, (19), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 14 states, 9 states have (on average 1.0) internal successors, (9), 8 states have internal predecessors, (9), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:20:59,196 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] [2024-11-14 04:21:01,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:21:03,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:21:06,693 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:21:09,043 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:21:17,160 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] [2024-11-14 04:21:17,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:21:17,162 INFO L93 Difference]: Finished difference Result 56 states and 72 transitions. [2024-11-14 04:21:17,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-14 04:21:17,174 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 9 states have (on average 1.0) internal successors, (9), 8 states have internal predecessors, (9), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2024-11-14 04:21:17,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:21:17,180 INFO L225 Difference]: With dead ends: 56 [2024-11-14 04:21:17,180 INFO L226 Difference]: Without dead ends: 36 [2024-11-14 04:21:17,183 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 35.6s TimeCoverageRelationStatistics Valid=111, Invalid=754, Unknown=9, NotChecked=56, Total=930 [2024-11-14 04:21:17,187 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 5 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 3 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:21:17,188 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 92 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 216 Invalid, 6 Unknown, 0 Unchecked, 20.0s Time] [2024-11-14 04:21:17,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-14 04:21:17,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2024-11-14 04:21:17,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 24 states have internal predecessors, (25), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-14 04:21:17,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2024-11-14 04:21:17,244 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 16 [2024-11-14 04:21:17,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:21:17,245 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2024-11-14 04:21:17,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 9 states have (on average 1.0) internal successors, (9), 8 states have internal predecessors, (9), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:21:17,246 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2024-11-14 04:21:17,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-14 04:21:17,247 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:21:17,248 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:21:17,272 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76240f34-b253-4e0f-97a9-1ec9f06b68e0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-14 04:21:17,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76240f34-b253-4e0f-97a9-1ec9f06b68e0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-14 04:21:17,448 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:21:17,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:21:17,449 INFO L85 PathProgramCache]: Analyzing trace with hash 2006180026, now seen corresponding path program 1 times [2024-11-14 04:21:17,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:21:17,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006654380] [2024-11-14 04:21:17,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:21:17,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:21:17,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 04:21:17,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2047177993] [2024-11-14 04:21:17,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:21:17,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:21:17,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76240f34-b253-4e0f-97a9-1ec9f06b68e0/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:21:17,612 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76240f34-b253-4e0f-97a9-1ec9f06b68e0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:21:17,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76240f34-b253-4e0f-97a9-1ec9f06b68e0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 04:21:17,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:21:17,896 INFO L255 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 109 conjuncts are in the unsatisfiable core [2024-11-14 04:21:17,905 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:21:17,932 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2024-11-14 04:21:17,949 INFO L349 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2024-11-14 04:21:17,949 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 61 treesize of output 53 [2024-11-14 04:21:17,990 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-14 04:21:18,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:21:18,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 33 [2024-11-14 04:21:18,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 33 [2024-11-14 04:21:19,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:21:19,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:21:19,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:21:19,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:21:19,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:21:19,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 58 [2024-11-14 04:21:19,202 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 31 treesize of output 24 [2024-11-14 04:21:19,228 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 20 treesize of output 17 [2024-11-14 04:21:19,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 26 [2024-11-14 04:21:19,851 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:21:19,851 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:21:22,550 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_112 (Array Int Int))) (= (mod (let ((.cse4 (let ((.cse6 (store |c_#memory_int| c_func_to_recursive_line_30_to_38_0_~c.base v_ArrVal_112))) (store .cse6 c_func_to_recursive_line_30_to_38_0_~x.base (let ((.cse7 (select .cse6 c_func_to_recursive_line_30_to_38_0_~x.base))) (store .cse7 c_func_to_recursive_line_30_to_38_0_~x.offset (+ (* (select (select .cse6 c_func_to_recursive_line_30_to_38_0_~z.base) c_func_to_recursive_line_30_to_38_0_~z.offset) (select .cse7 c_func_to_recursive_line_30_to_38_0_~x.offset)) 1))))))) (let ((.cse5 (select .cse4 c_func_to_recursive_line_30_to_38_0_~y.base))) (let ((.cse0 (select (select .cse4 c_func_to_recursive_line_30_to_38_0_~z.base) c_func_to_recursive_line_30_to_38_0_~z.offset)) (.cse1 (select .cse5 c_func_to_recursive_line_30_to_38_0_~y.offset))) (let ((.cse3 (store .cse4 c_func_to_recursive_line_30_to_38_0_~y.base (store .cse5 c_func_to_recursive_line_30_to_38_0_~y.offset (* .cse0 .cse1))))) (let ((.cse2 (select (select .cse3 c_func_to_recursive_line_30_to_38_0_~x.base) c_func_to_recursive_line_30_to_38_0_~x.offset))) (+ (* 18446744073709551615 .cse0 .cse1) (* 18446744073709551615 .cse2) (* (select (select .cse3 c_func_to_recursive_line_30_to_38_0_~z.base) c_func_to_recursive_line_30_to_38_0_~z.offset) .cse2) 1)))))) 18446744073709551616) 0)) is different from false [2024-11-14 04:21:23,205 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:21:23,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006654380] [2024-11-14 04:21:23,206 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 04:21:23,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047177993] [2024-11-14 04:21:23,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2047177993] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:21:23,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1901649209] [2024-11-14 04:21:23,211 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2024-11-14 04:21:23,215 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:21:23,216 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:96) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:276) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 04:21:23,223 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:21:23,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2024-11-14 04:21:23,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482101699] [2024-11-14 04:21:23,225 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-14 04:21:23,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-14 04:21:23,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:21:23,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-14 04:21:23,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=399, Unknown=1, NotChecked=40, Total=506 [2024-11-14 04:21:23,229 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 17 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 12 states have internal predecessors, (17), 6 states have call successors, (6), 6 states have call predecessors, (6), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 04:21:27,069 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:21:30,007 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:21:32,258 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:21:34,274 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:21:36,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:21:38,335 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:21:38,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:21:38,335 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2024-11-14 04:21:38,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-14 04:21:38,350 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 12 states have internal predecessors, (17), 6 states have call successors, (6), 6 states have call predecessors, (6), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 26 [2024-11-14 04:21:38,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:21:38,354 INFO L225 Difference]: With dead ends: 68 [2024-11-14 04:21:38,354 INFO L226 Difference]: Without dead ends: 66 [2024-11-14 04:21:38,355 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=118, Invalid=755, Unknown=1, NotChecked=56, Total=930 [2024-11-14 04:21:38,356 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 36 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 14 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2024-11-14 04:21:38,357 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 163 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 354 Invalid, 6 Unknown, 0 Unchecked, 14.3s Time] [2024-11-14 04:21:38,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-14 04:21:38,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 47. [2024-11-14 04:21:38,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 33 states have internal predecessors, (34), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2024-11-14 04:21:38,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2024-11-14 04:21:38,389 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 26 [2024-11-14 04:21:38,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:21:38,389 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2024-11-14 04:21:38,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 12 states have internal predecessors, (17), 6 states have call successors, (6), 6 states have call predecessors, (6), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 04:21:38,390 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2024-11-14 04:21:38,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-14 04:21:38,391 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:21:38,391 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:21:38,417 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76240f34-b253-4e0f-97a9-1ec9f06b68e0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-14 04:21:38,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76240f34-b253-4e0f-97a9-1ec9f06b68e0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:21:38,596 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:21:38,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:21:38,596 INFO L85 PathProgramCache]: Analyzing trace with hash 28638184, now seen corresponding path program 1 times [2024-11-14 04:21:38,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:21:38,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764924287] [2024-11-14 04:21:38,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:21:38,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:21:38,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 04:21:38,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1642857738] [2024-11-14 04:21:38,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:21:38,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:21:38,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76240f34-b253-4e0f-97a9-1ec9f06b68e0/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:21:38,700 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76240f34-b253-4e0f-97a9-1ec9f06b68e0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:21:38,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76240f34-b253-4e0f-97a9-1ec9f06b68e0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-14 04:21:38,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:21:38,881 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-14 04:21:38,887 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:21:38,977 INFO L349 Elim1Store]: treesize reduction 18, result has 28.0 percent of original size [2024-11-14 04:21:38,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 176 treesize of output 172 [2024-11-14 04:21:39,443 INFO L349 Elim1Store]: treesize reduction 32, result has 49.2 percent of original size [2024-11-14 04:21:39,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 86 treesize of output 106 [2024-11-14 04:21:39,488 INFO L349 Elim1Store]: treesize reduction 29, result has 3.3 percent of original size [2024-11-14 04:21:39,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 93 treesize of output 107 [2024-11-14 04:21:39,537 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-14 04:21:39,566 INFO L349 Elim1Store]: treesize reduction 29, result has 3.3 percent of original size [2024-11-14 04:21:39,566 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 81 treesize of output 92 [2024-11-14 04:21:39,798 INFO L349 Elim1Store]: treesize reduction 12, result has 60.0 percent of original size [2024-11-14 04:21:39,799 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 59 treesize of output 50 [2024-11-14 04:21:39,825 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 [2024-11-14 04:21:39,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:21:39,856 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2024-11-14 04:21:40,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:21:40,847 INFO L349 Elim1Store]: treesize reduction 24, result has 63.1 percent of original size [2024-11-14 04:21:40,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 107 treesize of output 107 [2024-11-14 04:21:40,870 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 56 treesize of output 54 [2024-11-14 04:21:41,308 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 04:21:41,308 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:21:45,076 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:21:45,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764924287] [2024-11-14 04:21:45,077 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 04:21:45,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642857738] [2024-11-14 04:21:45,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642857738] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:21:45,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [82651137] [2024-11-14 04:21:45,081 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2024-11-14 04:21:45,082 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:21:45,083 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:21:45,084 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:21:45,084 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:21:46,235 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 170 for LOIs [2024-11-14 04:21:46,309 INFO L197 IcfgInterpreter]: Interpreting procedure func_to_recursive_line_30_to_38_0 with input of size 126 for LOIs [2024-11-14 04:21:46,880 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 223 for LOIs [2024-11-14 04:21:47,801 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:23:10,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [82651137] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:23:10,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:23:10,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [10] total 29 [2024-11-14 04:23:10,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467922539] [2024-11-14 04:23:10,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:23:10,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-14 04:23:10,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:23:10,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-14 04:23:10,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=924, Unknown=16, NotChecked=0, Total=1056 [2024-11-14 04:23:10,867 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand has 21 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 13 states have internal predecessors, (15), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-14 04:23:12,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:23:14,930 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:23:16,949 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:23:19,077 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:23:21,141 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:23:23,159 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:23:25,360 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:23:27,392 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:23:29,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:23:31,820 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:23:33,837 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:23:36,663 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:23:38,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:23:40,737 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:23:42,899 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:23:44,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:23:47,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:23:49,385 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:23:51,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:23:54,114 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:23:56,127 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:23:58,368 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:24:00,382 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:24:02,616 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:24:04,622 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:24:06,874 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:24:08,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:26:50,706 WARN L286 SmtUtils]: Spent 2.54m on a formula simplification. DAG size of input: 196 DAG size of output: 196 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:26:52,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:26:54,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:26:59,746 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:27:04,011 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:27:06,028 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:27:11,657 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:27:13,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:27:15,943 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:27:17,962 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:27:20,462 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:27:22,478 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:27:25,162 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:27:27,248 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:27:35,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:27:37,185 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:27:39,671 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:27:41,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:27:44,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:27:46,289 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:27:48,491 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:27:50,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:27:52,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:27:54,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:27:54,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:27:54,944 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2024-11-14 04:27:54,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-14 04:27:54,945 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 13 states have internal predecessors, (15), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 26 [2024-11-14 04:27:54,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:27:54,947 INFO L225 Difference]: With dead ends: 57 [2024-11-14 04:27:54,947 INFO L226 Difference]: Without dead ends: 47 [2024-11-14 04:27:54,948 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 251.4s TimeCoverageRelationStatistics Valid=134, Invalid=1040, Unknown=16, NotChecked=0, Total=1190 [2024-11-14 04:27:54,949 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 3 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 2 mSolverCounterUnsat, 49 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 117.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 49 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 118.7s IncrementalHoareTripleChecker+Time [2024-11-14 04:27:54,949 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 81 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 256 Invalid, 49 Unknown, 0 Unchecked, 118.7s Time] [2024-11-14 04:27:54,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-14 04:27:54,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2024-11-14 04:27:54,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 30 states have (on average 1.1) internal successors, (33), 32 states have internal predecessors, (33), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2024-11-14 04:27:54,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 52 transitions. [2024-11-14 04:27:54,981 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 52 transitions. Word has length 26 [2024-11-14 04:27:54,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:27:54,981 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 52 transitions. [2024-11-14 04:27:54,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 13 states have internal predecessors, (15), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-14 04:27:54,982 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 52 transitions. [2024-11-14 04:27:54,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-14 04:27:54,983 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:27:54,983 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:27:55,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76240f34-b253-4e0f-97a9-1ec9f06b68e0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-14 04:27:55,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76240f34-b253-4e0f-97a9-1ec9f06b68e0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:27:55,188 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:27:55,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:27:55,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1490885009, now seen corresponding path program 2 times [2024-11-14 04:27:55,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:27:55,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557825711] [2024-11-14 04:27:55,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:27:55,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:27:55,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 04:27:55,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [542340300] [2024-11-14 04:27:55,598 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 04:27:55,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:27:55,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76240f34-b253-4e0f-97a9-1ec9f06b68e0/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:27:55,607 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76240f34-b253-4e0f-97a9-1ec9f06b68e0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:27:55,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76240f34-b253-4e0f-97a9-1ec9f06b68e0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-14 04:27:58,862 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-14 04:27:58,862 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:27:58,867 INFO L255 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 157 conjuncts are in the unsatisfiable core [2024-11-14 04:27:58,876 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:27:58,899 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2024-11-14 04:27:58,906 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 8 treesize of output 1 [2024-11-14 04:27:58,917 INFO L349 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2024-11-14 04:27:58,918 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 61 treesize of output 53 [2024-11-14 04:27:59,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:27:59,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 30 [2024-11-14 04:27:59,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 28 [2024-11-14 04:28:00,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:28:00,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:28:00,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:28:00,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:28:00,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:28:00,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 53 [2024-11-14 04:28:00,505 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 20 treesize of output 17 [2024-11-14 04:28:00,523 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 26 treesize of output 21 [2024-11-14 04:28:05,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:28:05,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:28:05,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:28:07,470 INFO L349 Elim1Store]: treesize reduction 247, result has 22.1 percent of original size [2024-11-14 04:28:07,471 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 269 treesize of output 340 [2024-11-14 04:28:07,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 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 160 treesize of output 162 [2024-11-14 04:28:07,572 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 68 [2024-11-14 04:28:07,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:28:07,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:28:07,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:28:07,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:28:08,099 INFO L349 Elim1Store]: treesize reduction 45, result has 10.0 percent of original size [2024-11-14 04:28:08,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 611 treesize of output 516 [2024-11-14 04:28:15,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:28:15,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:28:15,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:28:15,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:28:15,693 INFO L349 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2024-11-14 04:28:15,694 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 292 treesize of output 248 [2024-11-14 04:28:15,734 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 48 treesize of output 44 [2024-11-14 04:28:15,751 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 38 treesize of output 32 [2024-11-14 04:28:15,764 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 109 treesize of output 83 [2024-11-14 04:28:16,134 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 04:28:16,134 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:28:17,035 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_250 (Array Int Int))) (= (mod (let ((.cse4 (let ((.cse6 (store |c_#memory_int| c_func_to_recursive_line_30_to_38_0_~c.base v_ArrVal_250))) (store .cse6 c_func_to_recursive_line_30_to_38_0_~x.base (let ((.cse7 (select .cse6 c_func_to_recursive_line_30_to_38_0_~x.base))) (store .cse7 c_func_to_recursive_line_30_to_38_0_~x.offset (+ 1 (* (select .cse7 c_func_to_recursive_line_30_to_38_0_~x.offset) (select (select .cse6 c_func_to_recursive_line_30_to_38_0_~z.base) c_func_to_recursive_line_30_to_38_0_~z.offset))))))))) (let ((.cse5 (select .cse4 c_func_to_recursive_line_30_to_38_0_~y.base))) (let ((.cse2 (select .cse5 c_func_to_recursive_line_30_to_38_0_~y.offset)) (.cse3 (select (select .cse4 c_func_to_recursive_line_30_to_38_0_~z.base) c_func_to_recursive_line_30_to_38_0_~z.offset))) (let ((.cse0 (store .cse4 c_func_to_recursive_line_30_to_38_0_~y.base (store .cse5 c_func_to_recursive_line_30_to_38_0_~y.offset (* .cse2 .cse3))))) (let ((.cse1 (select (select .cse0 c_func_to_recursive_line_30_to_38_0_~x.base) c_func_to_recursive_line_30_to_38_0_~x.offset))) (+ (* (select (select .cse0 c_func_to_recursive_line_30_to_38_0_~z.base) c_func_to_recursive_line_30_to_38_0_~z.offset) .cse1) (* .cse2 18446744073709551615 .cse3) (* 18446744073709551615 .cse1) 1)))))) 18446744073709551616) 0)) is different from false [2024-11-14 04:28:17,738 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:28:17,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557825711] [2024-11-14 04:28:17,738 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 04:28:17,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542340300] [2024-11-14 04:28:17,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542340300] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:28:17,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1383962365] [2024-11-14 04:28:17,744 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2024-11-14 04:28:17,744 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:28:17,744 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:96) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:276) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 04:28:17,745 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:28:17,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2024-11-14 04:28:17,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77386608] [2024-11-14 04:28:17,745 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-14 04:28:17,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-14 04:28:17,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:28:17,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-14 04:28:17,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=441, Unknown=3, NotChecked=42, Total=552 [2024-11-14 04:28:17,750 INFO L87 Difference]: Start difference. First operand 47 states and 52 transitions. Second operand has 18 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 13 states have internal predecessors, (23), 7 states have call successors, (8), 7 states have call predecessors, (8), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-14 04:28:20,956 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:28:24,906 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:28:28,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:28:30,964 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:28:37,076 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:28:38,875 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:28:47,065 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:28:50,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:28:52,377 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:28:55,497 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:28:58,108 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:28:59,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:29:01,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:29:04,216 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:29:06,229 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:29:08,820 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:29:11,267 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:29:12,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:29:12,566 INFO L93 Difference]: Finished difference Result 64 states and 71 transitions. [2024-11-14 04:29:12,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-14 04:29:12,568 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 13 states have internal predecessors, (23), 7 states have call successors, (8), 7 states have call predecessors, (8), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 36 [2024-11-14 04:29:12,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:29:12,569 INFO L225 Difference]: With dead ends: 64 [2024-11-14 04:29:12,569 INFO L226 Difference]: Without dead ends: 62 [2024-11-14 04:29:12,570 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=113, Invalid=752, Unknown=9, NotChecked=56, Total=930 [2024-11-14 04:29:12,570 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 24 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 11 mSolverCounterUnsat, 17 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 17 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.9s IncrementalHoareTripleChecker+Time [2024-11-14 04:29:12,571 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 292 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 467 Invalid, 17 Unknown, 0 Unchecked, 45.9s Time] [2024-11-14 04:29:12,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-14 04:29:12,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2024-11-14 04:29:12,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 39 states have (on average 1.1025641025641026) internal successors, (43), 42 states have internal predecessors, (43), 11 states have call successors, (11), 9 states have call predecessors, (11), 10 states have return successors, (14), 10 states have call predecessors, (14), 10 states have call successors, (14) [2024-11-14 04:29:12,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 68 transitions. [2024-11-14 04:29:12,625 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 68 transitions. Word has length 36 [2024-11-14 04:29:12,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:29:12,625 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 68 transitions. [2024-11-14 04:29:12,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 13 states have internal predecessors, (23), 7 states have call successors, (8), 7 states have call predecessors, (8), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-14 04:29:12,626 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 68 transitions. [2024-11-14 04:29:12,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-14 04:29:12,627 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:29:12,627 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:29:12,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76240f34-b253-4e0f-97a9-1ec9f06b68e0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-14 04:29:12,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76240f34-b253-4e0f-97a9-1ec9f06b68e0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:29:12,828 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:29:12,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:29:12,829 INFO L85 PathProgramCache]: Analyzing trace with hash -831332934, now seen corresponding path program 1 times [2024-11-14 04:29:12,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:29:12,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039650189] [2024-11-14 04:29:12,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:29:12,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:29:12,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 04:29:12,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [400926011] [2024-11-14 04:29:12,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:29:12,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:29:12,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76240f34-b253-4e0f-97a9-1ec9f06b68e0/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:29:12,991 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76240f34-b253-4e0f-97a9-1ec9f06b68e0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:29:13,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76240f34-b253-4e0f-97a9-1ec9f06b68e0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-14 04:29:13,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:29:13,319 INFO L255 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 116 conjuncts are in the unsatisfiable core [2024-11-14 04:29:13,328 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:29:13,728 INFO L349 Elim1Store]: treesize reduction 34, result has 30.6 percent of original size [2024-11-14 04:29:13,728 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 336 treesize of output 334 [2024-11-14 04:29:13,767 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2024-11-14 04:29:13,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-14 04:29:15,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:29:15,314 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 29 [2024-11-14 04:29:19,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:29:19,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:29:19,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:29:19,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:29:19,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:29:19,675 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 44 [2024-11-14 04:29:20,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:29:20,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 24 [2024-11-14 04:29:21,034 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 04:29:21,034 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:29:39,923 WARN L873 $PredicateComparison]: unable to prove that (or (= (mod (let ((.cse0 (select (select |c_#memory_int| |c_func_to_recursive_line_30_to_38_0_#in~x.base|) |c_func_to_recursive_line_30_to_38_0_#in~x.offset|))) (+ (* (select (select |c_#memory_int| |c_func_to_recursive_line_30_to_38_0_#in~y.base|) |c_func_to_recursive_line_30_to_38_0_#in~y.offset|) 18446744073709551615) (* (select (select |c_#memory_int| |c_func_to_recursive_line_30_to_38_0_#in~z.base|) |c_func_to_recursive_line_30_to_38_0_#in~z.offset|) .cse0) (* 18446744073709551615 .cse0) 1)) 18446744073709551616) 0) (not (= 0 (mod (let ((.cse1 (store |c_old(#memory_int)| |c_func_to_recursive_line_30_to_38_0_#in~c.base| (let ((.cse10 (select |c_old(#memory_int)| |c_func_to_recursive_line_30_to_38_0_#in~c.base|))) (store .cse10 |c_func_to_recursive_line_30_to_38_0_#in~c.offset| (+ (select .cse10 |c_func_to_recursive_line_30_to_38_0_#in~c.offset|) 1)))))) (let ((.cse7 (store .cse1 |c_func_to_recursive_line_30_to_38_0_#in~x.base| (let ((.cse9 (select .cse1 |c_func_to_recursive_line_30_to_38_0_#in~x.base|))) (store .cse9 |c_func_to_recursive_line_30_to_38_0_#in~x.offset| (+ (* (select .cse9 |c_func_to_recursive_line_30_to_38_0_#in~x.offset|) (select (select .cse1 |c_func_to_recursive_line_30_to_38_0_#in~z.base|) |c_func_to_recursive_line_30_to_38_0_#in~z.offset|)) 1)))))) (let ((.cse2 (let ((.cse8 (select .cse7 |c_func_to_recursive_line_30_to_38_0_#in~y.base|))) (store .cse8 |c_func_to_recursive_line_30_to_38_0_#in~y.offset| (* (select .cse8 |c_func_to_recursive_line_30_to_38_0_#in~y.offset|) (select (select .cse7 |c_func_to_recursive_line_30_to_38_0_#in~z.base|) |c_func_to_recursive_line_30_to_38_0_#in~z.offset|)))))) (let ((.cse6 (store .cse7 |c_func_to_recursive_line_30_to_38_0_#in~y.base| .cse2))) (let ((.cse3 (select .cse6 |c_func_to_recursive_line_30_to_38_0_#in~x.base|))) (let ((.cse4 (select .cse3 |c_func_to_recursive_line_30_to_38_0_#in~x.offset|))) (let ((.cse5 (* (select (select .cse6 |c_func_to_recursive_line_30_to_38_0_#in~z.base|) |c_func_to_recursive_line_30_to_38_0_#in~z.offset|) .cse4))) (+ (* 18446744073709551615 (select (select (store (store .cse1 |c_func_to_recursive_line_30_to_38_0_#in~y.base| .cse2) |c_func_to_recursive_line_30_to_38_0_#in~x.base| (store .cse3 |c_func_to_recursive_line_30_to_38_0_#in~x.offset| (+ (* (- 1) .cse4) .cse5))) |c_func_to_recursive_line_30_to_38_0_#in~y.base|) |c_func_to_recursive_line_30_to_38_0_#in~y.offset|)) (* 18446744073709551615 .cse4) .cse5 1)))))))) 18446744073709551616)))) is different from true