./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-examples/standard_copy9_ground-1.i --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_d372292f-4b89-452a-9378-ed3b5a7c67ce/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d372292f-4b89-452a-9378-ed3b5a7c67ce/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_d372292f-4b89-452a-9378-ed3b5a7c67ce/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d372292f-4b89-452a-9378-ed3b5a7c67ce/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-examples/standard_copy9_ground-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d372292f-4b89-452a-9378-ed3b5a7c67ce/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_d372292f-4b89-452a-9378-ed3b5a7c67ce/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 904ada5b631ac9ba69e93f7c5eb51a71b3a5f4ed245a1ea57aa3fec5e9b98c37 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 04:50:12,997 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 04:50:13,072 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d372292f-4b89-452a-9378-ed3b5a7c67ce/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 04:50:13,081 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 04:50:13,082 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 04:50:13,123 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 04:50:13,124 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 04:50:13,124 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 04:50:13,126 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 04:50:13,126 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 04:50:13,126 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 04:50:13,127 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 04:50:13,127 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 04:50:13,127 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 04:50:13,127 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 04:50:13,127 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 04:50:13,127 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 04:50:13,127 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 04:50:13,127 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 04:50:13,127 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 04:50:13,127 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 04:50:13,127 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 04:50:13,128 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 04:50:13,128 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 04:50:13,128 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 04:50:13,128 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 04:50:13,128 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 04:50:13,128 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 04:50:13,128 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 04:50:13,128 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 04:50:13,129 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 04:50:13,129 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 04:50:13,129 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 04:50:13,129 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 04:50:13,129 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 04:50:13,129 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 04:50:13,129 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 04:50:13,129 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 04:50:13,129 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:50:13,129 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 04:50:13,130 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 04:50:13,130 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 04:50:13,130 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 04:50:13,130 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 04:50:13,130 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 04:50:13,130 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 04:50:13,130 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 04:50:13,130 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_d372292f-4b89-452a-9378-ed3b5a7c67ce/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 -> 904ada5b631ac9ba69e93f7c5eb51a71b3a5f4ed245a1ea57aa3fec5e9b98c37 [2024-11-14 04:50:13,502 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 04:50:13,513 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 04:50:13,516 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 04:50:13,518 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 04:50:13,519 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 04:50:13,520 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d372292f-4b89-452a-9378-ed3b5a7c67ce/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/array-examples/standard_copy9_ground-1.i Unable to find full path for "g++" [2024-11-14 04:50:15,441 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 04:50:15,686 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 04:50:15,687 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d372292f-4b89-452a-9378-ed3b5a7c67ce/sv-benchmarks/c/array-examples/standard_copy9_ground-1.i [2024-11-14 04:50:15,694 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d372292f-4b89-452a-9378-ed3b5a7c67ce/bin/utaipan-verify-sOmjnqqW8E/data/56ee03da4/f14f5927b41343a5b02f3f2960c8dafa/FLAG2da5fdfc8 [2024-11-14 04:50:15,708 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d372292f-4b89-452a-9378-ed3b5a7c67ce/bin/utaipan-verify-sOmjnqqW8E/data/56ee03da4/f14f5927b41343a5b02f3f2960c8dafa [2024-11-14 04:50:15,710 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 04:50:15,712 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 04:50:15,713 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 04:50:15,713 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 04:50:15,718 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 04:50:15,719 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:50:15" (1/1) ... [2024-11-14 04:50:15,719 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fa74b7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:50:15, skipping insertion in model container [2024-11-14 04:50:15,720 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:50:15" (1/1) ... [2024-11-14 04:50:15,736 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 04:50:15,904 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_d372292f-4b89-452a-9378-ed3b5a7c67ce/sv-benchmarks/c/array-examples/standard_copy9_ground-1.i[816,829] [2024-11-14 04:50:15,945 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:50:15,956 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 04:50:15,968 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_d372292f-4b89-452a-9378-ed3b5a7c67ce/sv-benchmarks/c/array-examples/standard_copy9_ground-1.i[816,829] [2024-11-14 04:50:15,999 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:50:16,023 INFO L204 MainTranslator]: Completed translation [2024-11-14 04:50:16,024 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:50:16 WrapperNode [2024-11-14 04:50:16,024 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 04:50:16,025 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 04:50:16,025 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 04:50:16,025 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 04:50:16,032 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:50:16" (1/1) ... [2024-11-14 04:50:16,044 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:50:16" (1/1) ... [2024-11-14 04:50:16,080 INFO L138 Inliner]: procedures = 16, calls = 59, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 185 [2024-11-14 04:50:16,083 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 04:50:16,084 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 04:50:16,084 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 04:50:16,084 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 04:50:16,093 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:50:16" (1/1) ... [2024-11-14 04:50:16,094 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:50:16" (1/1) ... [2024-11-14 04:50:16,098 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:50:16" (1/1) ... [2024-11-14 04:50:16,101 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:50:16" (1/1) ... [2024-11-14 04:50:16,112 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:50:16" (1/1) ... [2024-11-14 04:50:16,123 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:50:16" (1/1) ... [2024-11-14 04:50:16,125 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:50:16" (1/1) ... [2024-11-14 04:50:16,126 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:50:16" (1/1) ... [2024-11-14 04:50:16,131 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 04:50:16,133 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 04:50:16,133 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 04:50:16,137 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 04:50:16,138 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:50:16" (1/1) ... [2024-11-14 04:50:16,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:50:16,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d372292f-4b89-452a-9378-ed3b5a7c67ce/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:50:16,174 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d372292f-4b89-452a-9378-ed3b5a7c67ce/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 04:50:16,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d372292f-4b89-452a-9378-ed3b5a7c67ce/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 04:50:16,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 04:50:16,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 04:50:16,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-14 04:50:16,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-14 04:50:16,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 04:50:16,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 04:50:16,205 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-14 04:50:16,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-14 04:50:16,297 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 04:50:16,299 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 04:50:16,678 INFO L? ?]: Removed 18 outVars from TransFormulas that were not future-live. [2024-11-14 04:50:16,679 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 04:50:16,779 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 04:50:16,780 INFO L316 CfgBuilder]: Removed 11 assume(true) statements. [2024-11-14 04:50:16,780 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:50:16 BoogieIcfgContainer [2024-11-14 04:50:16,780 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 04:50:16,783 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 04:50:16,783 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 04:50:16,788 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 04:50:16,788 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 04:50:15" (1/3) ... [2024-11-14 04:50:16,789 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@740bb0c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:50:16, skipping insertion in model container [2024-11-14 04:50:16,789 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:50:16" (2/3) ... [2024-11-14 04:50:16,789 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@740bb0c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:50:16, skipping insertion in model container [2024-11-14 04:50:16,790 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:50:16" (3/3) ... [2024-11-14 04:50:16,791 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_copy9_ground-1.i [2024-11-14 04:50:16,805 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 04:50:16,807 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG standard_copy9_ground-1.i that has 1 procedures, 17 locations, 1 initial locations, 11 loop locations, and 1 error locations. [2024-11-14 04:50:16,861 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 04:50:16,879 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;@3c6f8c07, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 04:50:16,879 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 04:50:16,884 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:50:16,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-14 04:50:16,892 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:50:16,892 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:50:16,893 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:50:16,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:50:16,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1608248791, now seen corresponding path program 1 times [2024-11-14 04:50:16,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:50:16,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434243122] [2024-11-14 04:50:16,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:50:16,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:50:17,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:50:17,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:50:17,321 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:50:17,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434243122] [2024-11-14 04:50:17,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434243122] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:50:17,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:50:17,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 04:50:17,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740683987] [2024-11-14 04:50:17,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:50:17,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:50:17,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:50:17,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:50:17,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:50:17,360 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:50:17,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:50:17,448 INFO L93 Difference]: Finished difference Result 33 states and 55 transitions. [2024-11-14 04:50:17,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:50:17,452 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-14 04:50:17,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:50:17,458 INFO L225 Difference]: With dead ends: 33 [2024-11-14 04:50:17,459 INFO L226 Difference]: Without dead ends: 17 [2024-11-14 04:50:17,465 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:50:17,468 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:50:17,470 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:50:17,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-14 04:50:17,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-11-14 04:50:17,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:50:17,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 27 transitions. [2024-11-14 04:50:17,498 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 27 transitions. Word has length 14 [2024-11-14 04:50:17,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:50:17,498 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 27 transitions. [2024-11-14 04:50:17,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:50:17,499 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 27 transitions. [2024-11-14 04:50:17,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-14 04:50:17,499 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:50:17,499 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:50:17,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 04:50:17,500 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:50:17,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:50:17,500 INFO L85 PathProgramCache]: Analyzing trace with hash 148398231, now seen corresponding path program 1 times [2024-11-14 04:50:17,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:50:17,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45052461] [2024-11-14 04:50:17,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:50:17,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:50:17,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:50:17,708 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:50:17,708 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:50:17,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45052461] [2024-11-14 04:50:17,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45052461] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:50:17,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941524146] [2024-11-14 04:50:17,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:50:17,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:50:17,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d372292f-4b89-452a-9378-ed3b5a7c67ce/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:50:17,712 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d372292f-4b89-452a-9378-ed3b5a7c67ce/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:50:17,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d372292f-4b89-452a-9378-ed3b5a7c67ce/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 04:50:17,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:50:17,847 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-14 04:50:17,852 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:50:17,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 04:50:17,872 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:50:17,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941524146] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:50:17,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:50:17,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-14 04:50:17,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146365379] [2024-11-14 04:50:17,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:50:17,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:50:17,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:50:17,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:50:17,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:50:17,875 INFO L87 Difference]: Start difference. First operand 17 states and 27 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:50:17,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:50:17,966 INFO L93 Difference]: Finished difference Result 39 states and 66 transitions. [2024-11-14 04:50:17,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:50:17,967 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-14 04:50:17,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:50:17,967 INFO L225 Difference]: With dead ends: 39 [2024-11-14 04:50:17,967 INFO L226 Difference]: Without dead ends: 26 [2024-11-14 04:50:17,968 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:50:17,969 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:50:17,969 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:50:17,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-14 04:50:17,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-11-14 04:50:17,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.44) internal successors, (36), 25 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:50:17,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 36 transitions. [2024-11-14 04:50:17,978 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 36 transitions. Word has length 15 [2024-11-14 04:50:17,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:50:17,979 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 36 transitions. [2024-11-14 04:50:17,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:50:17,979 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 36 transitions. [2024-11-14 04:50:17,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-14 04:50:17,981 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:50:17,981 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 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 04:50:18,003 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d372292f-4b89-452a-9378-ed3b5a7c67ce/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-14 04:50:18,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d372292f-4b89-452a-9378-ed3b5a7c67ce/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:50:18,186 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:50:18,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:50:18,187 INFO L85 PathProgramCache]: Analyzing trace with hash -432095749, now seen corresponding path program 1 times [2024-11-14 04:50:18,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:50:18,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927562645] [2024-11-14 04:50:18,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:50:18,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:50:18,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:50:18,371 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-14 04:50:18,371 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:50:18,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927562645] [2024-11-14 04:50:18,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927562645] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:50:18,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981114204] [2024-11-14 04:50:18,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:50:18,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:50:18,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d372292f-4b89-452a-9378-ed3b5a7c67ce/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:50:18,374 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d372292f-4b89-452a-9378-ed3b5a7c67ce/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:50:18,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d372292f-4b89-452a-9378-ed3b5a7c67ce/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 04:50:18,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:50:18,581 INFO L255 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 04:50:18,583 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:50:18,618 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-14 04:50:18,619 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:50:18,652 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-14 04:50:18,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981114204] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:50:18,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [814927994] [2024-11-14 04:50:18,672 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-14 04:50:18,672 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:50:18,674 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:50:18,678 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:50:18,678 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:50:21,176 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:50:21,954 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '417#(and (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_~#a8~0#1.base|) (= |ULTIMATE.start_main_~#a9~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a5~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a2~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a3~0#1.base|) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a1~0#1.base|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a6~0#1.base|) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) 0) (select (select |#memory_int| |ULTIMATE.start_main_~#a0~0#1.base|) 0))) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (= |ULTIMATE.start_main_~#a0~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a4~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a9~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= |ULTIMATE.start_main_~#a8~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (<= 2 |ULTIMATE.start_main_~#a0~0#1.base|))' at error location [2024-11-14 04:50:21,955 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:50:21,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:50:21,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-14 04:50:21,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520668501] [2024-11-14 04:50:21,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:50:21,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 04:50:21,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:50:21,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 04:50:21,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-11-14 04:50:21,957 INFO L87 Difference]: Start difference. First operand 26 states and 36 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:50:22,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:50:22,005 INFO L93 Difference]: Finished difference Result 52 states and 74 transitions. [2024-11-14 04:50:22,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 04:50:22,006 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-14 04:50:22,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:50:22,007 INFO L225 Difference]: With dead ends: 52 [2024-11-14 04:50:22,007 INFO L226 Difference]: Without dead ends: 29 [2024-11-14 04:50:22,007 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-11-14 04:50:22,008 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:50:22,008 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:50:22,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-14 04:50:22,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-11-14 04:50:22,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 28 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:50:22,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 39 transitions. [2024-11-14 04:50:22,013 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 39 transitions. Word has length 24 [2024-11-14 04:50:22,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:50:22,013 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 39 transitions. [2024-11-14 04:50:22,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:50:22,014 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 39 transitions. [2024-11-14 04:50:22,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-14 04:50:22,014 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:50:22,014 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 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 04:50:22,035 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d372292f-4b89-452a-9378-ed3b5a7c67ce/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-14 04:50:22,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d372292f-4b89-452a-9378-ed3b5a7c67ce/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:50:22,219 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:50:22,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:50:22,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1407543483, now seen corresponding path program 2 times [2024-11-14 04:50:22,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:50:22,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129797420] [2024-11-14 04:50:22,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:50:22,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:50:22,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:50:22,425 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-14 04:50:22,426 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:50:22,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129797420] [2024-11-14 04:50:22,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129797420] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:50:22,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86185477] [2024-11-14 04:50:22,426 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 04:50:22,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:50:22,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d372292f-4b89-452a-9378-ed3b5a7c67ce/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:50:22,428 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d372292f-4b89-452a-9378-ed3b5a7c67ce/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:50:22,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d372292f-4b89-452a-9378-ed3b5a7c67ce/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-14 04:50:22,580 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-14 04:50:22,581 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:50:22,582 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 04:50:22,584 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:50:22,600 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-14 04:50:22,600 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:50:22,628 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-14 04:50:22,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86185477] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:50:22,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [680246058] [2024-11-14 04:50:22,632 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-14 04:50:22,632 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:50:22,632 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:50:22,633 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:50:22,633 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:50:24,041 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:50:24,636 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '733#(and (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_~#a8~0#1.base|) (= |ULTIMATE.start_main_~#a9~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a5~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a2~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a3~0#1.base|) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a1~0#1.base|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a6~0#1.base|) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) 0) (select (select |#memory_int| |ULTIMATE.start_main_~#a0~0#1.base|) 0))) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (= |ULTIMATE.start_main_~#a0~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a4~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a9~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= |ULTIMATE.start_main_~#a8~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (<= 2 |ULTIMATE.start_main_~#a0~0#1.base|))' at error location [2024-11-14 04:50:24,636 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:50:24,637 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:50:24,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-14 04:50:24,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90065183] [2024-11-14 04:50:24,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:50:24,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 04:50:24,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:50:24,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 04:50:24,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-11-14 04:50:24,639 INFO L87 Difference]: Start difference. First operand 29 states and 39 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:50:24,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:50:24,824 INFO L93 Difference]: Finished difference Result 77 states and 122 transitions. [2024-11-14 04:50:24,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 04:50:24,824 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-14 04:50:24,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:50:24,825 INFO L225 Difference]: With dead ends: 77 [2024-11-14 04:50:24,825 INFO L226 Difference]: Without dead ends: 56 [2024-11-14 04:50:24,826 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-11-14 04:50:24,827 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:50:24,827 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:50:24,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-14 04:50:24,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-11-14 04:50:24,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.2) internal successors, (66), 55 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:50:24,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 66 transitions. [2024-11-14 04:50:24,835 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 66 transitions. Word has length 27 [2024-11-14 04:50:24,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:50:24,835 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 66 transitions. [2024-11-14 04:50:24,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:50:24,835 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 66 transitions. [2024-11-14 04:50:24,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-14 04:50:24,837 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:50:24,837 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:50:24,853 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d372292f-4b89-452a-9378-ed3b5a7c67ce/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-14 04:50:25,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d372292f-4b89-452a-9378-ed3b5a7c67ce/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:50:25,038 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:50:25,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:50:25,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1028964567, now seen corresponding path program 3 times [2024-11-14 04:50:25,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:50:25,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036321510] [2024-11-14 04:50:25,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:50:25,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:50:25,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:50:25,376 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-14 04:50:25,376 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:50:25,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036321510] [2024-11-14 04:50:25,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036321510] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:50:25,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257309408] [2024-11-14 04:50:25,376 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 04:50:25,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:50:25,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d372292f-4b89-452a-9378-ed3b5a7c67ce/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:50:25,380 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d372292f-4b89-452a-9378-ed3b5a7c67ce/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:50:25,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d372292f-4b89-452a-9378-ed3b5a7c67ce/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-14 04:50:25,567 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 04:50:25,567 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:50:25,571 INFO L255 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 04:50:25,573 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:50:25,598 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-14 04:50:25,599 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:50:25,672 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-14 04:50:25,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257309408] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:50:25,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [733337240] [2024-11-14 04:50:25,674 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-14 04:50:25,676 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:50:25,676 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:50:25,676 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:50:25,677 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:50:26,942 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:50:27,485 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1321#(and (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_~#a8~0#1.base|) (= |ULTIMATE.start_main_~#a9~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a5~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a2~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a3~0#1.base|) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a1~0#1.base|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a6~0#1.base|) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) 0) (select (select |#memory_int| |ULTIMATE.start_main_~#a0~0#1.base|) 0))) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (= |ULTIMATE.start_main_~#a0~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a4~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a9~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= |ULTIMATE.start_main_~#a8~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (<= 2 |ULTIMATE.start_main_~#a0~0#1.base|))' at error location [2024-11-14 04:50:27,486 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:50:27,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:50:27,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-14 04:50:27,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14023949] [2024-11-14 04:50:27,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:50:27,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-14 04:50:27,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:50:27,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-14 04:50:27,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-11-14 04:50:27,488 INFO L87 Difference]: Start difference. First operand 56 states and 66 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:50:27,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:50:27,568 INFO L93 Difference]: Finished difference Result 112 states and 137 transitions. [2024-11-14 04:50:27,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-14 04:50:27,568 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-14 04:50:27,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:50:27,569 INFO L225 Difference]: With dead ends: 112 [2024-11-14 04:50:27,569 INFO L226 Difference]: Without dead ends: 62 [2024-11-14 04:50:27,570 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-11-14 04:50:27,571 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:50:27,571 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 70 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:50:27,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-14 04:50:27,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2024-11-14 04:50:27,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.180327868852459) internal successors, (72), 61 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:50:27,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 72 transitions. [2024-11-14 04:50:27,586 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 72 transitions. Word has length 54 [2024-11-14 04:50:27,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:50:27,587 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 72 transitions. [2024-11-14 04:50:27,587 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:50:27,587 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 72 transitions. [2024-11-14 04:50:27,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-14 04:50:27,588 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:50:27,588 INFO L215 NwaCegarLoop]: trace histogram [10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:50:27,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d372292f-4b89-452a-9378-ed3b5a7c67ce/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-14 04:50:27,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d372292f-4b89-452a-9378-ed3b5a7c67ce/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:50:27,796 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:50:27,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:50:27,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1463142615, now seen corresponding path program 4 times [2024-11-14 04:50:27,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:50:27,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126547121] [2024-11-14 04:50:27,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:50:27,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:50:27,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:50:28,418 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-14 04:50:28,418 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:50:28,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126547121] [2024-11-14 04:50:28,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126547121] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:50:28,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214198370] [2024-11-14 04:50:28,419 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 04:50:28,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:50:28,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d372292f-4b89-452a-9378-ed3b5a7c67ce/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:50:28,421 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d372292f-4b89-452a-9378-ed3b5a7c67ce/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:50:28,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d372292f-4b89-452a-9378-ed3b5a7c67ce/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-14 04:50:28,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:50:28,669 INFO L255 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 04:50:28,674 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:50:28,712 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-14 04:50:28,714 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:50:28,930 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-14 04:50:28,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214198370] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:50:28,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1507357808] [2024-11-14 04:50:28,933 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-14 04:50:28,933 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:50:28,934 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:50:28,934 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:50:28,934 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:50:30,048 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:50:30,710 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2039#(and (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_~#a8~0#1.base|) (= |ULTIMATE.start_main_~#a9~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a5~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a2~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a3~0#1.base|) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a1~0#1.base|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a6~0#1.base|) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) 0) (select (select |#memory_int| |ULTIMATE.start_main_~#a0~0#1.base|) 0))) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (= |ULTIMATE.start_main_~#a0~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a4~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a9~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= |ULTIMATE.start_main_~#a8~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (<= 2 |ULTIMATE.start_main_~#a0~0#1.base|))' at error location [2024-11-14 04:50:30,710 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:50:30,710 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:50:30,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2024-11-14 04:50:30,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757807552] [2024-11-14 04:50:30,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:50:30,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-14 04:50:30,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:50:30,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-14 04:50:30,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=312, Invalid=558, Unknown=0, NotChecked=0, Total=870 [2024-11-14 04:50:30,714 INFO L87 Difference]: Start difference. First operand 62 states and 72 transitions. Second operand has 25 states, 25 states have (on average 1.88) internal successors, (47), 24 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:50:30,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:50:30,813 INFO L93 Difference]: Finished difference Result 124 states and 155 transitions. [2024-11-14 04:50:30,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-14 04:50:30,814 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.88) internal successors, (47), 24 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-11-14 04:50:30,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:50:30,816 INFO L225 Difference]: With dead ends: 124 [2024-11-14 04:50:30,817 INFO L226 Difference]: Without dead ends: 74 [2024-11-14 04:50:30,818 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=312, Invalid=558, Unknown=0, NotChecked=0, Total=870 [2024-11-14 04:50:30,819 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:50:30,819 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:50:30,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-14 04:50:30,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2024-11-14 04:50:30,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.1506849315068493) internal successors, (84), 73 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:50:30,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 84 transitions. [2024-11-14 04:50:30,833 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 84 transitions. Word has length 60 [2024-11-14 04:50:30,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:50:30,834 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 84 transitions. [2024-11-14 04:50:30,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.88) internal successors, (47), 24 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:50:30,834 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 84 transitions. [2024-11-14 04:50:30,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-14 04:50:30,836 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:50:30,836 INFO L215 NwaCegarLoop]: trace histogram [22, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:50:30,854 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d372292f-4b89-452a-9378-ed3b5a7c67ce/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-14 04:50:31,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d372292f-4b89-452a-9378-ed3b5a7c67ce/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:50:31,037 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:50:31,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:50:31,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1590024407, now seen corresponding path program 5 times [2024-11-14 04:50:31,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:50:31,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755035722] [2024-11-14 04:50:31,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:50:31,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:50:31,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:50:32,245 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-14 04:50:32,246 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:50:32,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755035722] [2024-11-14 04:50:32,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755035722] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:50:32,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118691059] [2024-11-14 04:50:32,246 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 04:50:32,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:50:32,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d372292f-4b89-452a-9378-ed3b5a7c67ce/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:50:32,248 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d372292f-4b89-452a-9378-ed3b5a7c67ce/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:50:32,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d372292f-4b89-452a-9378-ed3b5a7c67ce/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-14 04:50:32,798 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-14 04:50:32,798 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:50:32,801 INFO L255 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 04:50:32,803 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:50:32,889 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2024-11-14 04:50:32,889 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:50:32,989 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2024-11-14 04:50:32,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118691059] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:50:32,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [333115814] [2024-11-14 04:50:32,991 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-14 04:50:32,992 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:50:32,992 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:50:32,992 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:50:32,992 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:50:34,072 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:50:34,706 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2887#(and (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_~#a8~0#1.base|) (= |ULTIMATE.start_main_~#a9~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a5~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a2~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a3~0#1.base|) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a1~0#1.base|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a6~0#1.base|) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) 0) (select (select |#memory_int| |ULTIMATE.start_main_~#a0~0#1.base|) 0))) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (= |ULTIMATE.start_main_~#a0~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a4~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a9~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= |ULTIMATE.start_main_~#a8~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (<= 2 |ULTIMATE.start_main_~#a0~0#1.base|))' at error location [2024-11-14 04:50:34,706 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:50:34,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:50:34,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 7, 7] total 35 [2024-11-14 04:50:34,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294983323] [2024-11-14 04:50:34,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:50:34,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-14 04:50:34,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:50:34,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-14 04:50:34,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=377, Invalid=1183, Unknown=0, NotChecked=0, Total=1560 [2024-11-14 04:50:34,709 INFO L87 Difference]: Start difference. First operand 74 states and 84 transitions. Second operand has 35 states, 35 states have (on average 2.142857142857143) internal successors, (75), 35 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:50:35,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:50:35,137 INFO L93 Difference]: Finished difference Result 179 states and 253 transitions. [2024-11-14 04:50:35,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-14 04:50:35,138 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.142857142857143) internal successors, (75), 35 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2024-11-14 04:50:35,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:50:35,139 INFO L225 Difference]: With dead ends: 179 [2024-11-14 04:50:35,139 INFO L226 Difference]: Without dead ends: 129 [2024-11-14 04:50:35,140 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=377, Invalid=1183, Unknown=0, NotChecked=0, Total=1560 [2024-11-14 04:50:35,141 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 04:50:35,141 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 60 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 04:50:35,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-11-14 04:50:35,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2024-11-14 04:50:35,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 1.0859375) internal successors, (139), 128 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:50:35,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 139 transitions. [2024-11-14 04:50:35,152 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 139 transitions. Word has length 72 [2024-11-14 04:50:35,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:50:35,153 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 139 transitions. [2024-11-14 04:50:35,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.142857142857143) internal successors, (75), 35 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:50:35,153 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 139 transitions. [2024-11-14 04:50:35,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-14 04:50:35,155 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:50:35,155 INFO L215 NwaCegarLoop]: trace histogram [23, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:50:35,176 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d372292f-4b89-452a-9378-ed3b5a7c67ce/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-14 04:50:35,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d372292f-4b89-452a-9378-ed3b5a7c67ce/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:50:35,356 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:50:35,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:50:35,357 INFO L85 PathProgramCache]: Analyzing trace with hash 229871639, now seen corresponding path program 6 times [2024-11-14 04:50:35,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:50:35,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540342985] [2024-11-14 04:50:35,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:50:35,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:50:35,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:50:36,947 INFO L134 CoverageAnalysis]: Checked inductivity of 771 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2024-11-14 04:50:36,948 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:50:36,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540342985] [2024-11-14 04:50:36,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540342985] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:50:36,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379573335] [2024-11-14 04:50:36,948 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 04:50:36,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:50:36,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d372292f-4b89-452a-9378-ed3b5a7c67ce/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:50:36,950 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d372292f-4b89-452a-9378-ed3b5a7c67ce/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:50:36,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d372292f-4b89-452a-9378-ed3b5a7c67ce/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-14 04:50:37,342 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 04:50:37,343 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:50:37,349 INFO L255 TraceCheckSpWp]: Trace formula consists of 1115 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-14 04:50:37,353 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:50:37,416 INFO L134 CoverageAnalysis]: Checked inductivity of 771 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2024-11-14 04:50:37,416 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:50:38,331 INFO L134 CoverageAnalysis]: Checked inductivity of 771 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2024-11-14 04:50:38,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379573335] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:50:38,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1464182383] [2024-11-14 04:50:38,333 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-14 04:50:38,333 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:50:38,335 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:50:38,335 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:50:38,335 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:50:39,325 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:50:40,023 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4301#(and (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_~#a8~0#1.base|) (= |ULTIMATE.start_main_~#a9~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a5~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a2~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a3~0#1.base|) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a1~0#1.base|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a6~0#1.base|) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) 0) (select (select |#memory_int| |ULTIMATE.start_main_~#a0~0#1.base|) 0))) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (= |ULTIMATE.start_main_~#a0~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a4~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a9~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= |ULTIMATE.start_main_~#a8~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (<= 2 |ULTIMATE.start_main_~#a0~0#1.base|))' at error location [2024-11-14 04:50:40,023 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:50:40,023 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:50:40,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 50 [2024-11-14 04:50:40,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970835877] [2024-11-14 04:50:40,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:50:40,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-14 04:50:40,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:50:40,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-14 04:50:40,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1287, Invalid=1793, Unknown=0, NotChecked=0, Total=3080 [2024-11-14 04:50:40,027 INFO L87 Difference]: Start difference. First operand 129 states and 139 transitions. Second operand has 51 states, 51 states have (on average 1.4313725490196079) internal successors, (73), 50 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:50:40,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:50:40,154 INFO L93 Difference]: Finished difference Result 258 states and 302 transitions. [2024-11-14 04:50:40,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-14 04:50:40,155 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.4313725490196079) internal successors, (73), 50 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2024-11-14 04:50:40,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:50:40,156 INFO L225 Difference]: With dead ends: 258 [2024-11-14 04:50:40,156 INFO L226 Difference]: Without dead ends: 154 [2024-11-14 04:50:40,158 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 453 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1287, Invalid=1793, Unknown=0, NotChecked=0, Total=3080 [2024-11-14 04:50:40,158 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:50:40,159 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 56 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:50:40,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2024-11-14 04:50:40,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2024-11-14 04:50:40,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 1.0718954248366013) internal successors, (164), 153 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:50:40,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 164 transitions. [2024-11-14 04:50:40,172 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 164 transitions. Word has length 127 [2024-11-14 04:50:40,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:50:40,172 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 164 transitions. [2024-11-14 04:50:40,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.4313725490196079) internal successors, (73), 50 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:50:40,172 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 164 transitions. [2024-11-14 04:50:40,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-14 04:50:40,174 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:50:40,174 INFO L215 NwaCegarLoop]: trace histogram [48, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:50:40,197 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d372292f-4b89-452a-9378-ed3b5a7c67ce/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-14 04:50:40,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d372292f-4b89-452a-9378-ed3b5a7c67ce/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:50:40,379 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:50:40,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:50:40,379 INFO L85 PathProgramCache]: Analyzing trace with hash 924587351, now seen corresponding path program 7 times [2024-11-14 04:50:40,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:50:40,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556780060] [2024-11-14 04:50:40,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:50:40,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:50:40,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:50:43,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1671 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2024-11-14 04:50:43,921 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:50:43,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556780060] [2024-11-14 04:50:43,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556780060] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:50:43,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259531690] [2024-11-14 04:50:43,922 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 04:50:43,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:50:43,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d372292f-4b89-452a-9378-ed3b5a7c67ce/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:50:43,924 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d372292f-4b89-452a-9378-ed3b5a7c67ce/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:50:43,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d372292f-4b89-452a-9378-ed3b5a7c67ce/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-14 04:50:44,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:50:44,458 INFO L255 TraceCheckSpWp]: Trace formula consists of 1465 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-14 04:50:44,466 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:50:44,549 INFO L134 CoverageAnalysis]: Checked inductivity of 1671 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2024-11-14 04:50:44,549 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:50:47,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1671 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2024-11-14 04:50:47,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259531690] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:50:47,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [246455199] [2024-11-14 04:50:47,625 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-14 04:50:47,625 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:50:47,626 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:50:47,626 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:50:47,626 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:50:48,525 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:50:49,297 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6123#(and (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_~#a8~0#1.base|) (= |ULTIMATE.start_main_~#a9~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a5~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a2~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a3~0#1.base|) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a1~0#1.base|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a6~0#1.base|) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) 0) (select (select |#memory_int| |ULTIMATE.start_main_~#a0~0#1.base|) 0))) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (= |ULTIMATE.start_main_~#a0~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a4~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a9~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= |ULTIMATE.start_main_~#a8~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (<= 2 |ULTIMATE.start_main_~#a0~0#1.base|))' at error location [2024-11-14 04:50:49,298 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:50:49,298 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:50:49,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 50] total 100 [2024-11-14 04:50:49,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284742537] [2024-11-14 04:50:49,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:50:49,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2024-11-14 04:50:49,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:50:49,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2024-11-14 04:50:49,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5062, Invalid=6068, Unknown=0, NotChecked=0, Total=11130 [2024-11-14 04:50:49,304 INFO L87 Difference]: Start difference. First operand 154 states and 164 transitions. Second operand has 101 states, 101 states have (on average 1.2178217821782178) internal successors, (123), 100 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:50:49,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:50:49,546 INFO L93 Difference]: Finished difference Result 308 states and 377 transitions. [2024-11-14 04:50:49,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2024-11-14 04:50:49,547 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 1.2178217821782178) internal successors, (123), 100 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2024-11-14 04:50:49,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:50:49,551 INFO L225 Difference]: With dead ends: 308 [2024-11-14 04:50:49,551 INFO L226 Difference]: Without dead ends: 204 [2024-11-14 04:50:49,555 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 400 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 928 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=5062, Invalid=6068, Unknown=0, NotChecked=0, Total=11130 [2024-11-14 04:50:49,556 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:50:49,557 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 126 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:50:49,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2024-11-14 04:50:49,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2024-11-14 04:50:49,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 203 states have (on average 1.0541871921182266) internal successors, (214), 203 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:50:49,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 214 transitions. [2024-11-14 04:50:49,581 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 214 transitions. Word has length 152 [2024-11-14 04:50:49,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:50:49,581 INFO L471 AbstractCegarLoop]: Abstraction has 204 states and 214 transitions. [2024-11-14 04:50:49,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 1.2178217821782178) internal successors, (123), 100 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:50:49,582 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 214 transitions. [2024-11-14 04:50:49,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-11-14 04:50:49,584 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:50:49,584 INFO L215 NwaCegarLoop]: trace histogram [98, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:50:49,606 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d372292f-4b89-452a-9378-ed3b5a7c67ce/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-14 04:50:49,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d372292f-4b89-452a-9378-ed3b5a7c67ce/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:50:49,788 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:50:49,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:50:49,788 INFO L85 PathProgramCache]: Analyzing trace with hash 2044505431, now seen corresponding path program 8 times [2024-11-14 04:50:49,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:50:49,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999889404] [2024-11-14 04:50:49,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:50:49,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:50:50,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:50:58,873 INFO L134 CoverageAnalysis]: Checked inductivity of 5346 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2024-11-14 04:50:58,874 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:50:58,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999889404] [2024-11-14 04:50:58,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999889404] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:50:58,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851667496] [2024-11-14 04:50:58,874 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 04:50:58,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:50:58,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d372292f-4b89-452a-9378-ed3b5a7c67ce/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:50:58,876 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d372292f-4b89-452a-9378-ed3b5a7c67ce/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:50:58,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d372292f-4b89-452a-9378-ed3b5a7c67ce/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-14 04:51:22,508 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-14 04:51:22,508 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:51:22,526 INFO L255 TraceCheckSpWp]: Trace formula consists of 933 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 04:51:22,531 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:51:23,117 INFO L134 CoverageAnalysis]: Checked inductivity of 5346 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 5291 trivial. 0 not checked. [2024-11-14 04:51:23,117 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:51:23,734 INFO L134 CoverageAnalysis]: Checked inductivity of 5346 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 5291 trivial. 0 not checked. [2024-11-14 04:51:23,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851667496] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:51:23,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1391515592] [2024-11-14 04:51:23,736 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-14 04:51:23,736 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:51:23,736 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:51:23,736 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:51:23,737 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:51:24,497 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:51:25,489 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8467#(and (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_~#a8~0#1.base|) (= |ULTIMATE.start_main_~#a9~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a5~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a2~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a3~0#1.base|) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a1~0#1.base|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a6~0#1.base|) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) 0) (select (select |#memory_int| |ULTIMATE.start_main_~#a0~0#1.base|) 0))) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (= |ULTIMATE.start_main_~#a0~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a4~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a9~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= |ULTIMATE.start_main_~#a8~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (<= 2 |ULTIMATE.start_main_~#a0~0#1.base|))' at error location [2024-11-14 04:51:25,489 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:51:25,489 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:51:25,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 13, 13] total 123 [2024-11-14 04:51:25,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366570124] [2024-11-14 04:51:25,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:51:25,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 123 states [2024-11-14 04:51:25,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:51:25,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2024-11-14 04:51:25,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5337, Invalid=10919, Unknown=0, NotChecked=0, Total=16256 [2024-11-14 04:51:25,496 INFO L87 Difference]: Start difference. First operand 204 states and 214 transitions. Second operand has 123 states, 123 states have (on average 1.3252032520325203) internal successors, (163), 123 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:51:26,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:51:26,369 INFO L93 Difference]: Finished difference Result 417 states and 545 transitions. [2024-11-14 04:51:26,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2024-11-14 04:51:26,370 INFO L78 Accepts]: Start accepts. Automaton has has 123 states, 123 states have (on average 1.3252032520325203) internal successors, (163), 123 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 202 [2024-11-14 04:51:26,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:51:26,373 INFO L225 Difference]: With dead ends: 417 [2024-11-14 04:51:26,373 INFO L226 Difference]: Without dead ends: 313 [2024-11-14 04:51:26,377 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 704 GetRequests, 578 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2802 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=5337, Invalid=10919, Unknown=0, NotChecked=0, Total=16256 [2024-11-14 04:51:26,378 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 577 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 577 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-14 04:51:26,378 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [577 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-14 04:51:26,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2024-11-14 04:51:26,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2024-11-14 04:51:26,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 312 states have (on average 1.0352564102564104) internal successors, (323), 312 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:51:26,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 323 transitions. [2024-11-14 04:51:26,413 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 323 transitions. Word has length 202 [2024-11-14 04:51:26,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:51:26,413 INFO L471 AbstractCegarLoop]: Abstraction has 313 states and 323 transitions. [2024-11-14 04:51:26,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 123 states, 123 states have (on average 1.3252032520325203) internal successors, (163), 123 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:51:26,414 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 323 transitions. [2024-11-14 04:51:26,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2024-11-14 04:51:26,418 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:51:26,418 INFO L215 NwaCegarLoop]: trace histogram [99, 22, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:51:26,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d372292f-4b89-452a-9378-ed3b5a7c67ce/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-14 04:51:26,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d372292f-4b89-452a-9378-ed3b5a7c67ce/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-14 04:51:26,619 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:51:26,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:51:26,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1913747177, now seen corresponding path program 9 times [2024-11-14 04:51:26,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:51:26,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481262218] [2024-11-14 04:51:26,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:51:26,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:51:26,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:51:36,206 INFO L134 CoverageAnalysis]: Checked inductivity of 7227 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 2277 trivial. 0 not checked. [2024-11-14 04:51:36,206 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:51:36,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481262218] [2024-11-14 04:51:36,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481262218] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:51:36,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355330202] [2024-11-14 04:51:36,207 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 04:51:36,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:51:36,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d372292f-4b89-452a-9378-ed3b5a7c67ce/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:51:36,209 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d372292f-4b89-452a-9378-ed3b5a7c67ce/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:51:36,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d372292f-4b89-452a-9378-ed3b5a7c67ce/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-14 04:51:37,213 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 04:51:37,213 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:51:37,228 INFO L255 TraceCheckSpWp]: Trace formula consists of 2935 conjuncts, 101 conjuncts are in the unsatisfiable core [2024-11-14 04:51:37,235 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:51:37,414 INFO L134 CoverageAnalysis]: Checked inductivity of 7227 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 2277 trivial. 0 not checked. [2024-11-14 04:51:37,414 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:51:49,944 INFO L134 CoverageAnalysis]: Checked inductivity of 7227 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 2277 trivial. 0 not checked. [2024-11-14 04:51:49,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355330202] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:51:49,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1843642873] [2024-11-14 04:51:49,946 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-14 04:51:49,946 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:51:49,946 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:51:49,946 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:51:49,946 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:51:50,642 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:51:51,632 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11981#(and (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_~#a8~0#1.base|) (= |ULTIMATE.start_main_~#a9~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a5~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a2~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a3~0#1.base|) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a1~0#1.base|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a6~0#1.base|) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) 0) (select (select |#memory_int| |ULTIMATE.start_main_~#a0~0#1.base|) 0))) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (= |ULTIMATE.start_main_~#a0~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a4~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a9~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= |ULTIMATE.start_main_~#a8~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (<= 2 |ULTIMATE.start_main_~#a0~0#1.base|))' at error location [2024-11-14 04:51:51,632 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:51:51,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:51:51,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101, 101] total 202 [2024-11-14 04:51:51,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535435166] [2024-11-14 04:51:51,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:51:51,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 203 states [2024-11-14 04:51:51,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:51:51,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 203 interpolants. [2024-11-14 04:51:51,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20515, Invalid=22541, Unknown=0, NotChecked=0, Total=43056 [2024-11-14 04:51:51,648 INFO L87 Difference]: Start difference. First operand 313 states and 323 transitions. Second operand has 203 states, 203 states have (on average 1.1083743842364533) internal successors, (225), 202 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:51:52,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:51:52,193 INFO L93 Difference]: Finished difference Result 626 states and 746 transitions. [2024-11-14 04:51:52,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2024-11-14 04:51:52,194 INFO L78 Accepts]: Start accepts. Automaton has has 203 states, 203 states have (on average 1.1083743842364533) internal successors, (225), 202 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 311 [2024-11-14 04:51:52,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:51:52,196 INFO L225 Difference]: With dead ends: 626 [2024-11-14 04:51:52,197 INFO L226 Difference]: Without dead ends: 414 [2024-11-14 04:51:52,201 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1032 GetRequests, 826 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1897 ImplicationChecksByTransitivity, 17.6s TimeCoverageRelationStatistics Valid=20515, Invalid=22541, Unknown=0, NotChecked=0, Total=43056 [2024-11-14 04:51:52,202 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:51:52,202 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 70 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:51:52,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2024-11-14 04:51:52,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 414. [2024-11-14 04:51:52,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 413 states have (on average 1.026634382566586) internal successors, (424), 413 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:51:52,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 424 transitions. [2024-11-14 04:51:52,222 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 424 transitions. Word has length 311 [2024-11-14 04:51:52,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:51:52,223 INFO L471 AbstractCegarLoop]: Abstraction has 414 states and 424 transitions. [2024-11-14 04:51:52,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 203 states, 203 states have (on average 1.1083743842364533) internal successors, (225), 202 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:51:52,224 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 424 transitions. [2024-11-14 04:51:52,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2024-11-14 04:51:52,230 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:51:52,231 INFO L215 NwaCegarLoop]: trace histogram [200, 22, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:51:52,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d372292f-4b89-452a-9378-ed3b5a7c67ce/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-14 04:51:52,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d372292f-4b89-452a-9378-ed3b5a7c67ce/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-14 04:51:52,431 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:51:52,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:51:52,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1035641257, now seen corresponding path program 10 times [2024-11-14 04:51:52,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:51:52,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074952024] [2024-11-14 04:51:52,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:51:52,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:51:53,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:52:24,582 INFO L134 CoverageAnalysis]: Checked inductivity of 22377 backedges. 0 proven. 20100 refuted. 0 times theorem prover too weak. 2277 trivial. 0 not checked. [2024-11-14 04:52:24,582 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:52:24,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074952024] [2024-11-14 04:52:24,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074952024] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:52:24,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381775653] [2024-11-14 04:52:24,582 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 04:52:24,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:52:24,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d372292f-4b89-452a-9378-ed3b5a7c67ce/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:52:24,584 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d372292f-4b89-452a-9378-ed3b5a7c67ce/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:52:24,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d372292f-4b89-452a-9378-ed3b5a7c67ce/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-14 04:52:25,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:52:25,990 INFO L255 TraceCheckSpWp]: Trace formula consists of 4349 conjuncts, 202 conjuncts are in the unsatisfiable core [2024-11-14 04:52:26,004 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:52:26,377 INFO L134 CoverageAnalysis]: Checked inductivity of 22377 backedges. 0 proven. 20100 refuted. 0 times theorem prover too weak. 2277 trivial. 0 not checked. [2024-11-14 04:52:26,377 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:53:17,110 INFO L134 CoverageAnalysis]: Checked inductivity of 22377 backedges. 0 proven. 20100 refuted. 0 times theorem prover too weak. 2277 trivial. 0 not checked. [2024-11-14 04:53:17,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381775653] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:53:17,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [151345596] [2024-11-14 04:53:17,113 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-14 04:53:17,113 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:53:17,113 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:53:17,113 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:53:17,113 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:53:17,950 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:53:19,700 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '16923#(and (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_~#a8~0#1.base|) (= |ULTIMATE.start_main_~#a9~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a5~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a2~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a3~0#1.base|) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a1~0#1.base|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a6~0#1.base|) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) 0) (select (select |#memory_int| |ULTIMATE.start_main_~#a0~0#1.base|) 0))) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (= |ULTIMATE.start_main_~#a0~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a4~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a9~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= |ULTIMATE.start_main_~#a8~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (<= 2 |ULTIMATE.start_main_~#a0~0#1.base|))' at error location [2024-11-14 04:53:19,701 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:53:19,701 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:53:19,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [202, 202, 202] total 404 [2024-11-14 04:53:19,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241320152] [2024-11-14 04:53:19,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:53:19,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 405 states [2024-11-14 04:53:19,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:53:19,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 405 interpolants. [2024-11-14 04:53:19,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81822, Invalid=85868, Unknown=0, NotChecked=0, Total=167690 [2024-11-14 04:53:19,727 INFO L87 Difference]: Start difference. First operand 414 states and 424 transitions. Second operand has 405 states, 405 states have (on average 1.054320987654321) internal successors, (427), 404 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:53:22,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:53:22,493 INFO L93 Difference]: Finished difference Result 828 states and 1049 transitions. [2024-11-14 04:53:22,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 404 states. [2024-11-14 04:53:22,494 INFO L78 Accepts]: Start accepts. Automaton has has 405 states, 405 states have (on average 1.054320987654321) internal successors, (427), 404 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 412 [2024-11-14 04:53:22,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:53:22,498 INFO L225 Difference]: With dead ends: 828 [2024-11-14 04:53:22,498 INFO L226 Difference]: Without dead ends: 616 [2024-11-14 04:53:22,506 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1436 GetRequests, 1028 SyntacticMatches, 0 SemanticMatches, 408 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3816 ImplicationChecksByTransitivity, 68.6s TimeCoverageRelationStatistics Valid=81822, Invalid=85868, Unknown=0, NotChecked=0, Total=167690 [2024-11-14 04:53:22,506 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 04:53:22,507 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 70 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 04:53:22,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2024-11-14 04:53:22,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 616. [2024-11-14 04:53:22,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 615 states have (on average 1.0178861788617886) internal successors, (626), 615 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:53:22,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 626 transitions. [2024-11-14 04:53:22,534 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 626 transitions. Word has length 412 [2024-11-14 04:53:22,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:53:22,535 INFO L471 AbstractCegarLoop]: Abstraction has 616 states and 626 transitions. [2024-11-14 04:53:22,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 405 states, 405 states have (on average 1.054320987654321) internal successors, (427), 404 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:53:22,536 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 626 transitions. [2024-11-14 04:53:22,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 615 [2024-11-14 04:53:22,547 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:53:22,547 INFO L215 NwaCegarLoop]: trace histogram [402, 22, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:53:22,575 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d372292f-4b89-452a-9378-ed3b5a7c67ce/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-14 04:53:22,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d372292f-4b89-452a-9378-ed3b5a7c67ce/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:53:22,748 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:53:22,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:53:22,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1678775895, now seen corresponding path program 11 times [2024-11-14 04:53:22,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:53:22,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542997246] [2024-11-14 04:53:22,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:53:22,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:53:24,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:55:26,526 INFO L134 CoverageAnalysis]: Checked inductivity of 83280 backedges. 0 proven. 81003 refuted. 0 times theorem prover too weak. 2277 trivial. 0 not checked. [2024-11-14 04:55:26,526 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:55:26,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542997246] [2024-11-14 04:55:26,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542997246] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:55:26,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191692840] [2024-11-14 04:55:26,527 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 04:55:26,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:55:26,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d372292f-4b89-452a-9378-ed3b5a7c67ce/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:55:26,532 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d372292f-4b89-452a-9378-ed3b5a7c67ce/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:55:26,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d372292f-4b89-452a-9378-ed3b5a7c67ce/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process