./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa47f374-4907-4583-8214-9b908bcaf448/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa47f374-4907-4583-8214-9b908bcaf448/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_fa47f374-4907-4583-8214-9b908bcaf448/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa47f374-4907-4583-8214-9b908bcaf448/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa47f374-4907-4583-8214-9b908bcaf448/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_fa47f374-4907-4583-8214-9b908bcaf448/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 bdb594c873073d652fb54f506ec7ea8f7caa1cb8c040606ba09f2d3f5e908396 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 03:38:06,648 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 03:38:06,733 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa47f374-4907-4583-8214-9b908bcaf448/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 03:38:06,738 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 03:38:06,738 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 03:38:06,785 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 03:38:06,785 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 03:38:06,785 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 03:38:06,786 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 03:38:06,786 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 03:38:06,786 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 03:38:06,786 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 03:38:06,786 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 03:38:06,786 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 03:38:06,786 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 03:38:06,786 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 03:38:06,787 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 03:38:06,787 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 03:38:06,787 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 03:38:06,787 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 03:38:06,789 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 03:38:06,790 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 03:38:06,790 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 03:38:06,790 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 03:38:06,790 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 03:38:06,790 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 03:38:06,791 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 03:38:06,791 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 03:38:06,791 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 03:38:06,791 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 03:38:06,791 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 03:38:06,791 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 03:38:06,791 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 03:38:06,791 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 03:38:06,791 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 03:38:06,791 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 03:38:06,791 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 03:38:06,792 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 03:38:06,792 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:38:06,792 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 03:38:06,792 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 03:38:06,792 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 03:38:06,792 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 03:38:06,792 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 03:38:06,792 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 03:38:06,792 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 03:38:06,792 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 03:38:06,793 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_fa47f374-4907-4583-8214-9b908bcaf448/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 -> bdb594c873073d652fb54f506ec7ea8f7caa1cb8c040606ba09f2d3f5e908396 [2024-11-14 03:38:07,145 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 03:38:07,157 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 03:38:07,159 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 03:38:07,162 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 03:38:07,162 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 03:38:07,164 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa47f374-4907-4583-8214-9b908bcaf448/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound10.c Unable to find full path for "g++" [2024-11-14 03:38:09,023 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 03:38:09,352 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 03:38:09,352 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa47f374-4907-4583-8214-9b908bcaf448/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound10.c [2024-11-14 03:38:09,363 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa47f374-4907-4583-8214-9b908bcaf448/bin/utaipan-verify-sOmjnqqW8E/data/2b7d4e6b8/941d2bdb53d149d9b12d19398b33ebee/FLAG37fd3401f [2024-11-14 03:38:09,376 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa47f374-4907-4583-8214-9b908bcaf448/bin/utaipan-verify-sOmjnqqW8E/data/2b7d4e6b8/941d2bdb53d149d9b12d19398b33ebee [2024-11-14 03:38:09,378 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 03:38:09,379 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 03:38:09,380 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 03:38:09,381 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 03:38:09,384 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 03:38:09,385 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:38:09" (1/1) ... [2024-11-14 03:38:09,386 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48346b0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:38:09, skipping insertion in model container [2024-11-14 03:38:09,386 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:38:09" (1/1) ... [2024-11-14 03:38:09,401 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 03:38:09,545 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_fa47f374-4907-4583-8214-9b908bcaf448/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound10.c[546,559] [2024-11-14 03:38:09,560 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:38:09,568 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 03:38:09,578 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_fa47f374-4907-4583-8214-9b908bcaf448/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound10.c[546,559] [2024-11-14 03:38:09,583 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:38:09,596 INFO L204 MainTranslator]: Completed translation [2024-11-14 03:38:09,596 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:38:09 WrapperNode [2024-11-14 03:38:09,597 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 03:38:09,597 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 03:38:09,598 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 03:38:09,601 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 03:38:09,607 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:38:09" (1/1) ... [2024-11-14 03:38:09,613 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:38:09" (1/1) ... [2024-11-14 03:38:09,626 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 45 [2024-11-14 03:38:09,626 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 03:38:09,627 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 03:38:09,627 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 03:38:09,627 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 03:38:09,634 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:38:09" (1/1) ... [2024-11-14 03:38:09,634 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:38:09" (1/1) ... [2024-11-14 03:38:09,635 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:38:09" (1/1) ... [2024-11-14 03:38:09,636 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:38:09" (1/1) ... [2024-11-14 03:38:09,638 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:38:09" (1/1) ... [2024-11-14 03:38:09,645 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:38:09" (1/1) ... [2024-11-14 03:38:09,647 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:38:09" (1/1) ... [2024-11-14 03:38:09,648 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:38:09" (1/1) ... [2024-11-14 03:38:09,649 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 03:38:09,651 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 03:38:09,651 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 03:38:09,652 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 03:38:09,653 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:38:09" (1/1) ... [2024-11-14 03:38:09,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:38:09,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa47f374-4907-4583-8214-9b908bcaf448/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:38:09,683 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa47f374-4907-4583-8214-9b908bcaf448/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 03:38:09,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa47f374-4907-4583-8214-9b908bcaf448/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 03:38:09,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 03:38:09,713 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-14 03:38:09,713 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-14 03:38:09,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 03:38:09,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 03:38:09,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 03:38:09,714 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-14 03:38:09,714 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-14 03:38:09,789 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 03:38:09,792 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 03:38:09,978 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-14 03:38:09,980 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 03:38:10,024 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 03:38:10,025 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-14 03:38:10,025 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:38:10 BoogieIcfgContainer [2024-11-14 03:38:10,025 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 03:38:10,028 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 03:38:10,028 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 03:38:10,034 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 03:38:10,034 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 03:38:09" (1/3) ... [2024-11-14 03:38:10,035 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50d3d300 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:38:10, skipping insertion in model container [2024-11-14 03:38:10,036 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:38:09" (2/3) ... [2024-11-14 03:38:10,037 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50d3d300 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:38:10, skipping insertion in model container [2024-11-14 03:38:10,037 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:38:10" (3/3) ... [2024-11-14 03:38:10,039 INFO L112 eAbstractionObserver]: Analyzing ICFG geo1-ll_unwindbound10.c [2024-11-14 03:38:10,057 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 03:38:10,059 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG geo1-ll_unwindbound10.c that has 3 procedures, 20 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-14 03:38:10,122 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 03:38:10,138 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;@1d881e2b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 03:38:10,138 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 03:38:10,144 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-14 03:38:10,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-14 03:38:10,154 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:38:10,155 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:38:10,155 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:38:10,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:38:10,161 INFO L85 PathProgramCache]: Analyzing trace with hash -79207269, now seen corresponding path program 1 times [2024-11-14 03:38:10,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:38:10,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800702306] [2024-11-14 03:38:10,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:38:10,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:38:10,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:38:10,344 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 03:38:10,344 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:38:10,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800702306] [2024-11-14 03:38:10,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800702306] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:38:10,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:38:10,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 03:38:10,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108811465] [2024-11-14 03:38:10,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:38:10,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-14 03:38:10,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:38:10,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-14 03:38:10,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-14 03:38:10,377 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 03:38:10,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:38:10,405 INFO L93 Difference]: Finished difference Result 34 states and 45 transitions. [2024-11-14 03:38:10,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-14 03:38:10,408 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2024-11-14 03:38:10,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:38:10,413 INFO L225 Difference]: With dead ends: 34 [2024-11-14 03:38:10,413 INFO L226 Difference]: Without dead ends: 18 [2024-11-14 03:38:10,415 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-14 03:38:10,418 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 03:38:10,419 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 03:38:10,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-11-14 03:38:10,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-11-14 03:38:10,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:38:10,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2024-11-14 03:38:10,457 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 14 [2024-11-14 03:38:10,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:38:10,459 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2024-11-14 03:38:10,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 03:38:10,461 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2024-11-14 03:38:10,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-14 03:38:10,463 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:38:10,463 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:38:10,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 03:38:10,464 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:38:10,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:38:10,465 INFO L85 PathProgramCache]: Analyzing trace with hash -460681024, now seen corresponding path program 1 times [2024-11-14 03:38:10,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:38:10,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990674839] [2024-11-14 03:38:10,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:38:10,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:38:10,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 03:38:10,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1745239127] [2024-11-14 03:38:10,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:38:10,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:38:10,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa47f374-4907-4583-8214-9b908bcaf448/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:38:10,534 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa47f374-4907-4583-8214-9b908bcaf448/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:38:10,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa47f374-4907-4583-8214-9b908bcaf448/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 03:38:10,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:38:10,611 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 03:38:10,617 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:38:10,748 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 03:38:10,749 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:38:10,749 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:38:10,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990674839] [2024-11-14 03:38:10,752 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 03:38:10,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745239127] [2024-11-14 03:38:10,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745239127] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:38:10,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:38:10,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 03:38:10,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064495085] [2024-11-14 03:38:10,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:38:10,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 03:38:10,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:38:10,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 03:38:10,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:38:10,761 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 03:38:10,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:38:10,899 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2024-11-14 03:38:10,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 03:38:10,899 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2024-11-14 03:38:10,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:38:10,900 INFO L225 Difference]: With dead ends: 29 [2024-11-14 03:38:10,901 INFO L226 Difference]: Without dead ends: 27 [2024-11-14 03:38:10,901 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-14 03:38:10,902 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 5 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:38:10,902 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 54 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:38:10,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-14 03:38:10,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2024-11-14 03:38:10,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.25) internal successors, (20), 18 states have internal predecessors, (20), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-14 03:38:10,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2024-11-14 03:38:10,910 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 14 [2024-11-14 03:38:10,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:38:10,910 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2024-11-14 03:38:10,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 03:38:10,911 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2024-11-14 03:38:10,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-14 03:38:10,912 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:38:10,912 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:38:10,937 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa47f374-4907-4583-8214-9b908bcaf448/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-14 03:38:11,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa47f374-4907-4583-8214-9b908bcaf448/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:38:11,116 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:38:11,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:38:11,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1479746722, now seen corresponding path program 1 times [2024-11-14 03:38:11,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:38:11,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631591951] [2024-11-14 03:38:11,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:38:11,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:38:11,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:38:11,334 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 03:38:11,335 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:38:11,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631591951] [2024-11-14 03:38:11,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631591951] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:38:11,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:38:11,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 03:38:11,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187692725] [2024-11-14 03:38:11,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:38:11,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 03:38:11,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:38:11,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 03:38:11,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 03:38:11,337 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 03:38:11,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:38:11,405 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2024-11-14 03:38:11,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 03:38:11,406 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 15 [2024-11-14 03:38:11,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:38:11,412 INFO L225 Difference]: With dead ends: 33 [2024-11-14 03:38:11,412 INFO L226 Difference]: Without dead ends: 25 [2024-11-14 03:38:11,413 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 03:38:11,414 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 3 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:38:11,414 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 45 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:38:11,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-14 03:38:11,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-14 03:38:11,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-14 03:38:11,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2024-11-14 03:38:11,435 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 15 [2024-11-14 03:38:11,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:38:11,435 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2024-11-14 03:38:11,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 03:38:11,435 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2024-11-14 03:38:11,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 03:38:11,436 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:38:11,437 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:38:11,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-14 03:38:11,438 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:38:11,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:38:11,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1815829043, now seen corresponding path program 1 times [2024-11-14 03:38:11,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:38:11,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618913698] [2024-11-14 03:38:11,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:38:11,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:38:11,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:38:11,949 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 03:38:11,949 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:38:11,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618913698] [2024-11-14 03:38:11,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618913698] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:38:11,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185309988] [2024-11-14 03:38:11,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:38:11,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:38:11,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa47f374-4907-4583-8214-9b908bcaf448/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:38:11,953 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa47f374-4907-4583-8214-9b908bcaf448/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:38:11,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa47f374-4907-4583-8214-9b908bcaf448/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 03:38:12,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:38:12,014 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 03:38:12,016 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:38:12,147 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 03:38:12,147 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:38:12,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185309988] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:38:12,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 03:38:12,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-11-14 03:38:12,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386861158] [2024-11-14 03:38:12,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:38:12,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 03:38:12,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:38:12,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 03:38:12,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-14 03:38:12,149 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 03:38:12,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:38:12,230 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2024-11-14 03:38:12,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 03:38:12,230 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2024-11-14 03:38:12,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:38:12,231 INFO L225 Difference]: With dead ends: 34 [2024-11-14 03:38:12,232 INFO L226 Difference]: Without dead ends: 26 [2024-11-14 03:38:12,232 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-11-14 03:38:12,235 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 3 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:38:12,235 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 67 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:38:12,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-14 03:38:12,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-11-14 03:38:12,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 states have internal predecessors, (20), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-14 03:38:12,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2024-11-14 03:38:12,244 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 21 [2024-11-14 03:38:12,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:38:12,244 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2024-11-14 03:38:12,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 03:38:12,244 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2024-11-14 03:38:12,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-14 03:38:12,246 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:38:12,246 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:38:12,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa47f374-4907-4583-8214-9b908bcaf448/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-14 03:38:12,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa47f374-4907-4583-8214-9b908bcaf448/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:38:12,447 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:38:12,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:38:12,448 INFO L85 PathProgramCache]: Analyzing trace with hash 852024214, now seen corresponding path program 1 times [2024-11-14 03:38:12,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:38:12,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021097316] [2024-11-14 03:38:12,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:38:12,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:38:12,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 03:38:12,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [12973203] [2024-11-14 03:38:12,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:38:12,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:38:12,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa47f374-4907-4583-8214-9b908bcaf448/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:38:12,471 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa47f374-4907-4583-8214-9b908bcaf448/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:38:12,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa47f374-4907-4583-8214-9b908bcaf448/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-14 03:38:12,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:38:12,539 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-14 03:38:12,542 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:38:12,768 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 03:38:12,768 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:38:21,169 WARN L873 $PredicateComparison]: unable to prove that (or (= (mod (+ (* 18446744073709551615 |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|) |c_ULTIMATE.start_main_~z~0#1| (* |c_ULTIMATE.start_main_~y~0#1| 18446744073709551615 |c_ULTIMATE.start_main_~z~0#1|)) 18446744073709551616) 0) (not (= (mod (+ (* 18446744073709551615 |c_ULTIMATE.start_main_~x~0#1|) (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 18446744073709551615) 1) 18446744073709551616) 0))) is different from true [2024-11-14 03:38:29,424 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 3 not checked. [2024-11-14 03:38:29,424 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:38:29,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021097316] [2024-11-14 03:38:29,425 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 03:38:29,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12973203] [2024-11-14 03:38:29,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12973203] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:38:29,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [593749040] [2024-11-14 03:38:29,456 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2024-11-14 03:38:29,457 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:38:29,463 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:38:29,474 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:38:29,479 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:38:30,824 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 43 for LOIs [2024-11-14 03:38:30,910 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 64 for LOIs [2024-11-14 03:38:30,936 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:38:38,720 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '622#(and (<= ~counter~0 10) (= |__VERIFIER_assert_#in~cond| 0) (exists ((|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_13| Int) (|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_11| Int) (|v_ULTIMATE.start_main_~c~0#1_BEFORE_CALL_7| Int) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_13| Int) (|v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_18| Int)) (and (<= 1 |#StackHeapBarrier|) (<= 1 |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_18|) (<= |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_11| 2147483647) (not (= (mod (+ (* 18446744073709551615 |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_13|) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_13| 18446744073709551615) (* |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_18| |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_13|) 1) 18446744073709551616) 0)) (<= |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_18| 2147483647) (<= 1 ~counter~0) (<= 1 |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_11|) (<= 1 |v_ULTIMATE.start_main_~c~0#1_BEFORE_CALL_7|))))' at error location [2024-11-14 03:38:38,720 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:38:38,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 03:38:38,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 15 [2024-11-14 03:38:38,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714572255] [2024-11-14 03:38:38,721 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 03:38:38,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-14 03:38:38,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:38:38,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-14 03:38:38,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=661, Unknown=4, NotChecked=52, Total=812 [2024-11-14 03:38:38,725 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 15 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 12 states have internal predecessors, (25), 6 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-14 03:38:45,457 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-14 03:38:51,583 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-14 03:38:53,588 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-14 03:38:55,593 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-14 03:38:57,599 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-14 03:38:59,621 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-14 03:39:01,628 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-14 03:39:03,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-14 03:39:05,711 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-14 03:39:05,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:39:05,714 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2024-11-14 03:39:05,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-14 03:39:05,715 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 12 states have internal predecessors, (25), 6 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 22 [2024-11-14 03:39:05,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:39:05,717 INFO L225 Difference]: With dead ends: 46 [2024-11-14 03:39:05,717 INFO L226 Difference]: Without dead ends: 44 [2024-11-14 03:39:05,718 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 20.6s TimeCoverageRelationStatistics Valid=118, Invalid=809, Unknown=7, NotChecked=58, Total=992 [2024-11-14 03:39:05,720 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 34 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 13 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 18.5s IncrementalHoareTripleChecker+Time [2024-11-14 03:39:05,720 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 92 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 98 Invalid, 9 Unknown, 48 Unchecked, 18.5s Time] [2024-11-14 03:39:05,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-14 03:39:05,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2024-11-14 03:39:05,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 30 states have internal predecessors, (36), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-14 03:39:05,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2024-11-14 03:39:05,734 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 22 [2024-11-14 03:39:05,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:39:05,734 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2024-11-14 03:39:05,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 12 states have internal predecessors, (25), 6 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-14 03:39:05,735 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2024-11-14 03:39:05,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-14 03:39:05,735 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:39:05,736 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:39:05,757 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa47f374-4907-4583-8214-9b908bcaf448/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-14 03:39:05,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa47f374-4907-4583-8214-9b908bcaf448/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:39:05,940 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:39:05,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:39:05,940 INFO L85 PathProgramCache]: Analyzing trace with hash 559409992, now seen corresponding path program 1 times [2024-11-14 03:39:05,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:39:05,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156009832] [2024-11-14 03:39:05,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:39:05,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:39:05,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:39:06,075 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 03:39:06,075 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:39:06,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156009832] [2024-11-14 03:39:06,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156009832] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:39:06,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725619202] [2024-11-14 03:39:06,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:39:06,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:39:06,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa47f374-4907-4583-8214-9b908bcaf448/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:39:06,078 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa47f374-4907-4583-8214-9b908bcaf448/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:39:06,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa47f374-4907-4583-8214-9b908bcaf448/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-14 03:39:06,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:39:06,147 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 03:39:06,149 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:39:06,186 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 03:39:06,187 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:39:06,244 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 03:39:06,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725619202] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:39:06,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [166529861] [2024-11-14 03:39:06,248 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2024-11-14 03:39:06,249 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:39:06,249 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:39:06,249 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:39:06,249 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:39:06,922 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 73 for LOIs [2024-11-14 03:39:07,095 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 64 for LOIs [2024-11-14 03:39:07,125 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:39:12,713 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '914#(and (or (and (<= ~counter~0 10) (exists ((|v_ULTIMATE.start_main_~c~0#1_BEFORE_CALL_16| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_22| Int) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_22| Int) (|v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_33| Int) (|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_26| Int)) (and (<= 1 |#StackHeapBarrier|) (<= 1 |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_26|) (<= 1 |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_33|) (<= 1 ~counter~0) (not (= (mod (+ (* |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_33| |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_22|) (* 18446744073709551615 |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_22|) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_22| 18446744073709551615) 1) 18446744073709551616) 0)) (<= |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_33| 2147483647) (<= 1 |v_ULTIMATE.start_main_~c~0#1_BEFORE_CALL_16|) (<= |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_26| 2147483647)))) (and (<= 11 ~counter~0) (exists ((|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_25| Int) (|v_ULTIMATE.start_main_~c~0#1_BEFORE_CALL_19| Int) (|v_ULTIMATE.start_main_~x~0#1_34| Int) (|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_29| Int) (|v_ULTIMATE.start_main_~z~0#1_23| Int)) (and (not (= (mod (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_25| 18446744073709551615) (* |v_ULTIMATE.start_main_~x~0#1_34| 18446744073709551615) (* |v_ULTIMATE.start_main_~x~0#1_34| |v_ULTIMATE.start_main_~z~0#1_23|) 1) 18446744073709551616) 0)) (<= |v_ULTIMATE.start_main_~z~0#1_23| 2147483647) (<= 1 |#StackHeapBarrier|) (<= |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_29| 2147483647) (<= 1 |v_ULTIMATE.start_main_~z~0#1_23|) (<= 1 |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_29|) (<= 1 |v_ULTIMATE.start_main_~c~0#1_BEFORE_CALL_19|))))) (= |__VERIFIER_assert_#in~cond| 0))' at error location [2024-11-14 03:39:12,713 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:39:12,713 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:39:12,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 5] total 10 [2024-11-14 03:39:12,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066461045] [2024-11-14 03:39:12,713 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:39:12,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-14 03:39:12,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:39:12,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-14 03:39:12,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=499, Unknown=1, NotChecked=0, Total=600 [2024-11-14 03:39:12,717 INFO L87 Difference]: Start difference. First operand 41 states and 51 transitions. Second operand has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 6 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-14 03:39:12,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:39:12,801 INFO L93 Difference]: Finished difference Result 73 states and 78 transitions. [2024-11-14 03:39:12,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-14 03:39:12,802 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 6 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 23 [2024-11-14 03:39:12,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:39:12,803 INFO L225 Difference]: With dead ends: 73 [2024-11-14 03:39:12,803 INFO L226 Difference]: Without dead ends: 61 [2024-11-14 03:39:12,804 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=113, Invalid=588, Unknown=1, NotChecked=0, Total=702 [2024-11-14 03:39:12,805 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 31 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 03:39:12,805 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 71 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 03:39:12,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-14 03:39:12,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 53. [2024-11-14 03:39:12,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 37 states have (on average 1.135135135135135) internal successors, (42), 39 states have internal predecessors, (42), 9 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-14 03:39:12,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2024-11-14 03:39:12,824 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 23 [2024-11-14 03:39:12,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:39:12,824 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2024-11-14 03:39:12,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 6 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-14 03:39:12,824 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2024-11-14 03:39:12,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-14 03:39:12,825 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:39:12,825 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:39:12,841 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa47f374-4907-4583-8214-9b908bcaf448/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-14 03:39:13,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa47f374-4907-4583-8214-9b908bcaf448/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:39:13,026 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:39:13,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:39:13,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1358601783, now seen corresponding path program 1 times [2024-11-14 03:39:13,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:39:13,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334492277] [2024-11-14 03:39:13,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:39:13,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:39:13,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:39:13,557 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-14 03:39:13,557 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:39:13,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334492277] [2024-11-14 03:39:13,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334492277] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:39:13,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805168733] [2024-11-14 03:39:13,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:39:13,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:39:13,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa47f374-4907-4583-8214-9b908bcaf448/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:39:13,559 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa47f374-4907-4583-8214-9b908bcaf448/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:39:13,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa47f374-4907-4583-8214-9b908bcaf448/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-14 03:39:13,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:39:13,612 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-14 03:39:13,613 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:39:13,832 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-14 03:39:13,832 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:39:13,986 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-14 03:39:13,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805168733] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:39:13,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1583811655] [2024-11-14 03:39:13,988 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2024-11-14 03:39:13,988 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:39:13,988 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:39:13,988 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:39:13,988 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:39:14,625 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 68 for LOIs [2024-11-14 03:39:14,694 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 64 for LOIs [2024-11-14 03:39:14,716 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:39:22,767 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1298#(and (<= ~counter~0 10) (exists ((|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_37| Int) (|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_44| Int) (|v_ULTIMATE.start_main_~c~0#1_BEFORE_CALL_28| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_37| Int) (|v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_51| Int)) (and (<= 1 |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_44|) (<= 1 |#StackHeapBarrier|) (<= |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_44| 2147483647) (<= 1 |v_ULTIMATE.start_main_~c~0#1_BEFORE_CALL_28|) (<= |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_51| 2147483647) (<= 1 ~counter~0) (<= 1 |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_51|) (not (= (mod (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_37| 18446744073709551615) (* 18446744073709551615 |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_37|) (* |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_51| |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_37|) 1) 18446744073709551616) 0)))) (= |__VERIFIER_assert_#in~cond| 0))' at error location [2024-11-14 03:39:22,767 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:39:22,767 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:39:22,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 10 [2024-11-14 03:39:22,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51365132] [2024-11-14 03:39:22,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:39:22,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-14 03:39:22,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:39:22,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-14 03:39:22,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=570, Unknown=2, NotChecked=0, Total=650 [2024-11-14 03:39:22,771 INFO L87 Difference]: Start difference. First operand 53 states and 58 transitions. Second operand has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-14 03:39:24,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-14 03:39:24,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:39:24,876 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2024-11-14 03:39:24,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 03:39:24,877 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 29 [2024-11-14 03:39:24,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:39:24,878 INFO L225 Difference]: With dead ends: 61 [2024-11-14 03:39:24,878 INFO L226 Difference]: Without dead ends: 49 [2024-11-14 03:39:24,878 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 64 SyntacticMatches, 5 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=86, Invalid=614, Unknown=2, NotChecked=0, Total=702 [2024-11-14 03:39:24,879 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 5 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:39:24,879 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 104 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2024-11-14 03:39:24,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-14 03:39:24,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2024-11-14 03:39:24,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 36 states have internal predecessors, (36), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-14 03:39:24,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2024-11-14 03:39:24,895 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 29 [2024-11-14 03:39:24,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:39:24,896 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions. [2024-11-14 03:39:24,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-14 03:39:24,896 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2024-11-14 03:39:24,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-14 03:39:24,897 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:39:24,897 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:39:24,910 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa47f374-4907-4583-8214-9b908bcaf448/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-14 03:39:25,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa47f374-4907-4583-8214-9b908bcaf448/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:39:25,098 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:39:25,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:39:25,098 INFO L85 PathProgramCache]: Analyzing trace with hash 563902488, now seen corresponding path program 2 times [2024-11-14 03:39:25,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:39:25,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127558429] [2024-11-14 03:39:25,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:39:25,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:39:25,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 03:39:25,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1185003757] [2024-11-14 03:39:25,156 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 03:39:25,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:39:25,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa47f374-4907-4583-8214-9b908bcaf448/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:39:25,160 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa47f374-4907-4583-8214-9b908bcaf448/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:39:25,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa47f374-4907-4583-8214-9b908bcaf448/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process