./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-lit/hh2012-ex1b.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f1e1ac8-3e28-47b2-b835-11b4b5d3b2ab/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f1e1ac8-3e28-47b2-b835-11b4b5d3b2ab/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_7f1e1ac8-3e28-47b2-b835-11b4b5d3b2ab/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f1e1ac8-3e28-47b2-b835-11b4b5d3b2ab/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-lit/hh2012-ex1b.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f1e1ac8-3e28-47b2-b835-11b4b5d3b2ab/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_7f1e1ac8-3e28-47b2-b835-11b4b5d3b2ab/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 7ce79fe11836d82ec064e02fff135ad9866417774e7d276b3384b4d4dde863b5 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 04:46:24,377 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 04:46:24,477 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f1e1ac8-3e28-47b2-b835-11b4b5d3b2ab/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 04:46:24,486 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 04:46:24,490 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 04:46:24,529 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 04:46:24,531 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 04:46:24,532 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 04:46:24,532 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 04:46:24,533 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 04:46:24,533 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 04:46:24,534 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 04:46:24,534 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 04:46:24,534 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 04:46:24,534 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 04:46:24,535 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 04:46:24,535 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 04:46:24,535 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 04:46:24,535 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 04:46:24,535 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 04:46:24,535 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 04:46:24,535 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 04:46:24,536 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 04:46:24,536 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 04:46:24,536 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 04:46:24,536 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 04:46:24,536 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 04:46:24,537 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 04:46:24,537 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 04:46:24,537 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 04:46:24,537 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 04:46:24,537 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 04:46:24,538 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 04:46:24,538 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 04:46:24,538 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 04:46:24,538 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 04:46:24,539 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 04:46:24,539 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 04:46:24,539 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:46:24,539 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 04:46:24,539 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 04:46:24,540 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 04:46:24,540 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 04:46:24,540 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 04:46:24,540 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 04:46:24,541 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 04:46:24,541 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 04:46:24,541 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_7f1e1ac8-3e28-47b2-b835-11b4b5d3b2ab/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 -> 7ce79fe11836d82ec064e02fff135ad9866417774e7d276b3384b4d4dde863b5 [2024-11-14 04:46:24,921 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 04:46:24,940 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 04:46:24,942 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 04:46:24,947 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 04:46:24,947 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 04:46:24,949 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f1e1ac8-3e28-47b2-b835-11b4b5d3b2ab/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/loop-lit/hh2012-ex1b.i Unable to find full path for "g++" [2024-11-14 04:46:27,110 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 04:46:27,360 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 04:46:27,361 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f1e1ac8-3e28-47b2-b835-11b4b5d3b2ab/sv-benchmarks/c/loop-lit/hh2012-ex1b.i [2024-11-14 04:46:27,367 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f1e1ac8-3e28-47b2-b835-11b4b5d3b2ab/bin/utaipan-verify-sOmjnqqW8E/data/7e5d590fd/d91ecfbe07fe47459070e6eaf4f38bb1/FLAGfb67328df [2024-11-14 04:46:27,383 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f1e1ac8-3e28-47b2-b835-11b4b5d3b2ab/bin/utaipan-verify-sOmjnqqW8E/data/7e5d590fd/d91ecfbe07fe47459070e6eaf4f38bb1 [2024-11-14 04:46:27,386 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 04:46:27,387 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 04:46:27,389 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 04:46:27,389 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 04:46:27,394 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 04:46:27,395 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:46:27" (1/1) ... [2024-11-14 04:46:27,396 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38cf7ac8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:46:27, skipping insertion in model container [2024-11-14 04:46:27,396 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:46:27" (1/1) ... [2024-11-14 04:46:27,411 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 04:46:27,574 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_7f1e1ac8-3e28-47b2-b835-11b4b5d3b2ab/sv-benchmarks/c/loop-lit/hh2012-ex1b.i[800,813] [2024-11-14 04:46:27,587 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:46:27,595 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 04:46:27,605 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_7f1e1ac8-3e28-47b2-b835-11b4b5d3b2ab/sv-benchmarks/c/loop-lit/hh2012-ex1b.i[800,813] [2024-11-14 04:46:27,608 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:46:27,624 INFO L204 MainTranslator]: Completed translation [2024-11-14 04:46:27,624 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:46:27 WrapperNode [2024-11-14 04:46:27,625 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 04:46:27,626 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 04:46:27,626 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 04:46:27,626 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 04:46:27,634 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:46:27" (1/1) ... [2024-11-14 04:46:27,640 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:46:27" (1/1) ... [2024-11-14 04:46:27,655 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 29 [2024-11-14 04:46:27,655 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 04:46:27,656 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 04:46:27,656 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 04:46:27,656 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 04:46:27,663 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:46:27" (1/1) ... [2024-11-14 04:46:27,663 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:46:27" (1/1) ... [2024-11-14 04:46:27,664 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:46:27" (1/1) ... [2024-11-14 04:46:27,664 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:46:27" (1/1) ... [2024-11-14 04:46:27,667 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:46:27" (1/1) ... [2024-11-14 04:46:27,670 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:46:27" (1/1) ... [2024-11-14 04:46:27,671 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:46:27" (1/1) ... [2024-11-14 04:46:27,672 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:46:27" (1/1) ... [2024-11-14 04:46:27,673 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 04:46:27,674 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 04:46:27,674 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 04:46:27,674 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 04:46:27,675 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:46:27" (1/1) ... [2024-11-14 04:46:27,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:46:27,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f1e1ac8-3e28-47b2-b835-11b4b5d3b2ab/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:46:27,712 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f1e1ac8-3e28-47b2-b835-11b4b5d3b2ab/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 04:46:27,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f1e1ac8-3e28-47b2-b835-11b4b5d3b2ab/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 04:46:27,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 04:46:27,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 04:46:27,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 04:46:27,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 04:46:27,750 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-14 04:46:27,751 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-14 04:46:27,834 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 04:46:27,837 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 04:46:27,990 INFO L? ?]: Removed 4 outVars from TransFormulas that were not future-live. [2024-11-14 04:46:27,991 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 04:46:28,036 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 04:46:28,036 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-14 04:46:28,037 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:46:28 BoogieIcfgContainer [2024-11-14 04:46:28,037 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 04:46:28,041 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 04:46:28,041 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 04:46:28,047 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 04:46:28,047 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 04:46:27" (1/3) ... [2024-11-14 04:46:28,048 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79d78b3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:46:28, skipping insertion in model container [2024-11-14 04:46:28,048 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:46:27" (2/3) ... [2024-11-14 04:46:28,048 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79d78b3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:46:28, skipping insertion in model container [2024-11-14 04:46:28,048 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:46:28" (3/3) ... [2024-11-14 04:46:28,050 INFO L112 eAbstractionObserver]: Analyzing ICFG hh2012-ex1b.i [2024-11-14 04:46:28,070 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 04:46:28,072 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG hh2012-ex1b.i that has 2 procedures, 17 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-14 04:46:28,125 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 04:46:28,145 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;@58964f1d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 04:46:28,146 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 04:46:28,151 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 10 states have (on average 1.4) internal successors, (14), 12 states have internal predecessors, (14), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-14 04:46:28,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-14 04:46:28,159 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:46:28,159 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-14 04:46:28,160 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:46:28,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:46:28,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1778635628, now seen corresponding path program 1 times [2024-11-14 04:46:28,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:46:28,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104887049] [2024-11-14 04:46:28,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:46:28,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:46:28,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:46:28,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:46:28,387 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:46:28,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104887049] [2024-11-14 04:46:28,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104887049] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:46:28,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:46:28,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 04:46:28,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999225100] [2024-11-14 04:46:28,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:46:28,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:46:28,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:46:28,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:46:28,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:46:28,421 INFO L87 Difference]: Start difference. First operand has 17 states, 10 states have (on average 1.4) internal successors, (14), 12 states have internal predecessors, (14), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:46:28,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:46:28,486 INFO L93 Difference]: Finished difference Result 38 states and 58 transitions. [2024-11-14 04:46:28,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:46:28,491 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-14 04:46:28,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:46:28,497 INFO L225 Difference]: With dead ends: 38 [2024-11-14 04:46:28,497 INFO L226 Difference]: Without dead ends: 20 [2024-11-14 04:46:28,501 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:46:28,508 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 3 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:46:28,509 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 30 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:46:28,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-14 04:46:28,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 16. [2024-11-14 04:46:28,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 10 states have (on average 1.3) internal successors, (13), 12 states have internal predecessors, (13), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 04:46:28,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2024-11-14 04:46:28,549 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 6 [2024-11-14 04:46:28,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:46:28,550 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2024-11-14 04:46:28,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:46:28,552 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2024-11-14 04:46:28,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-14 04:46:28,552 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:46:28,552 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:46:28,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 04:46:28,553 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:46:28,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:46:28,553 INFO L85 PathProgramCache]: Analyzing trace with hash -679774635, now seen corresponding path program 1 times [2024-11-14 04:46:28,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:46:28,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471954898] [2024-11-14 04:46:28,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:46:28,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:46:28,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:46:28,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:46:28,754 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:46:28,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471954898] [2024-11-14 04:46:28,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471954898] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:46:28,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:46:28,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-14 04:46:28,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478634333] [2024-11-14 04:46:28,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:46:28,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 04:46:28,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:46:28,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 04:46:28,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-14 04:46:28,757 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:46:28,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:46:28,873 INFO L93 Difference]: Finished difference Result 37 states and 48 transitions. [2024-11-14 04:46:28,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 04:46:28,874 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-14 04:46:28,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:46:28,876 INFO L225 Difference]: With dead ends: 37 [2024-11-14 04:46:28,876 INFO L226 Difference]: Without dead ends: 23 [2024-11-14 04:46:28,876 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-14 04:46:28,878 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 3 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:46:28,878 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 43 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:46:28,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-14 04:46:28,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-11-14 04:46:28,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-14 04:46:28,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2024-11-14 04:46:28,890 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 7 [2024-11-14 04:46:28,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:46:28,891 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2024-11-14 04:46:28,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:46:28,891 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2024-11-14 04:46:28,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-14 04:46:28,891 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:46:28,891 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:46:28,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-14 04:46:28,892 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:46:28,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:46:28,892 INFO L85 PathProgramCache]: Analyzing trace with hash 539527343, now seen corresponding path program 1 times [2024-11-14 04:46:28,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:46:28,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567911447] [2024-11-14 04:46:28,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:46:28,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:46:28,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:46:29,090 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 04:46:29,093 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:46:29,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567911447] [2024-11-14 04:46:29,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567911447] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:46:29,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:46:29,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 04:46:29,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936671130] [2024-11-14 04:46:29,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:46:29,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:46:29,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:46:29,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:46:29,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:46:29,096 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 04:46:29,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:46:29,184 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2024-11-14 04:46:29,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 04:46:29,184 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2024-11-14 04:46:29,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:46:29,185 INFO L225 Difference]: With dead ends: 29 [2024-11-14 04:46:29,185 INFO L226 Difference]: Without dead ends: 27 [2024-11-14 04:46:29,185 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-14 04:46:29,186 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 5 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:46:29,187 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 39 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:46:29,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-14 04:46:29,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-11-14 04:46:29,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-14 04:46:29,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2024-11-14 04:46:29,193 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 13 [2024-11-14 04:46:29,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:46:29,193 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2024-11-14 04:46:29,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 04:46:29,194 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2024-11-14 04:46:29,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-14 04:46:29,194 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:46:29,194 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-14 04:46:29,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-14 04:46:29,195 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:46:29,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:46:29,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1046840431, now seen corresponding path program 1 times [2024-11-14 04:46:29,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:46:29,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470908989] [2024-11-14 04:46:29,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:46:29,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:46:29,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:46:29,363 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-14 04:46:29,363 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:46:29,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470908989] [2024-11-14 04:46:29,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470908989] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:46:29,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:46:29,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-14 04:46:29,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871031045] [2024-11-14 04:46:29,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:46:29,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 04:46:29,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:46:29,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 04:46:29,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-14 04:46:29,366 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:46:29,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:46:29,448 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2024-11-14 04:46:29,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 04:46:29,449 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2024-11-14 04:46:29,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:46:29,449 INFO L225 Difference]: With dead ends: 33 [2024-11-14 04:46:29,449 INFO L226 Difference]: Without dead ends: 31 [2024-11-14 04:46:29,450 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-14 04:46:29,451 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:46:29,451 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 43 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:46:29,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-14 04:46:29,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-11-14 04:46:29,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 22 states have internal predecessors, (24), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-14 04:46:29,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2024-11-14 04:46:29,468 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 19 [2024-11-14 04:46:29,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:46:29,468 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2024-11-14 04:46:29,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:46:29,469 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2024-11-14 04:46:29,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-14 04:46:29,469 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:46:29,470 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:46:29,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-14 04:46:29,470 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:46:29,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:46:29,473 INFO L85 PathProgramCache]: Analyzing trace with hash 703736585, now seen corresponding path program 1 times [2024-11-14 04:46:29,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:46:29,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351639061] [2024-11-14 04:46:29,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:46:29,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:46:29,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:46:29,621 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-14 04:46:29,621 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:46:29,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351639061] [2024-11-14 04:46:29,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351639061] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:46:29,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:46:29,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-14 04:46:29,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767563000] [2024-11-14 04:46:29,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:46:29,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 04:46:29,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:46:29,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 04:46:29,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-14 04:46:29,624 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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 04:46:29,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:46:29,743 INFO L93 Difference]: Finished difference Result 59 states and 70 transitions. [2024-11-14 04:46:29,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 04:46:29,744 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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 25 [2024-11-14 04:46:29,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:46:29,747 INFO L225 Difference]: With dead ends: 59 [2024-11-14 04:46:29,747 INFO L226 Difference]: Without dead ends: 52 [2024-11-14 04:46:29,747 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-14 04:46:29,748 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 7 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:46:29,749 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 60 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:46:29,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-14 04:46:29,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 45. [2024-11-14 04:46:29,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 31 states have internal predecessors, (34), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-14 04:46:29,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2024-11-14 04:46:29,766 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 25 [2024-11-14 04:46:29,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:46:29,767 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2024-11-14 04:46:29,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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 04:46:29,767 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2024-11-14 04:46:29,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-14 04:46:29,768 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:46:29,768 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-14 04:46:29,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-14 04:46:29,768 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:46:29,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:46:29,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1062066077, now seen corresponding path program 1 times [2024-11-14 04:46:29,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:46:29,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491274911] [2024-11-14 04:46:29,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:46:29,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:46:29,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:46:29,917 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2024-11-14 04:46:29,917 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:46:29,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491274911] [2024-11-14 04:46:29,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491274911] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:46:29,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:46:29,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-14 04:46:29,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371539827] [2024-11-14 04:46:29,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:46:29,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 04:46:29,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:46:29,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 04:46:29,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-14 04:46:29,919 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-14 04:46:29,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:46:29,989 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2024-11-14 04:46:29,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 04:46:29,990 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 51 [2024-11-14 04:46:29,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:46:29,990 INFO L225 Difference]: With dead ends: 51 [2024-11-14 04:46:29,991 INFO L226 Difference]: Without dead ends: 47 [2024-11-14 04:46:29,991 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-14 04:46:29,992 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 5 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:46:29,992 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 44 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:46:29,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-14 04:46:30,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2024-11-14 04:46:30,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 32 states have (on average 1.09375) internal successors, (35), 32 states have internal predecessors, (35), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-14 04:46:30,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 52 transitions. [2024-11-14 04:46:30,006 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 52 transitions. Word has length 51 [2024-11-14 04:46:30,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:46:30,006 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 52 transitions. [2024-11-14 04:46:30,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-14 04:46:30,007 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 52 transitions. [2024-11-14 04:46:30,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-14 04:46:30,008 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:46:30,008 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-14 04:46:30,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-14 04:46:30,008 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:46:30,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:46:30,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1951953632, now seen corresponding path program 1 times [2024-11-14 04:46:30,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:46:30,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243910480] [2024-11-14 04:46:30,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:46:30,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:46:30,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:46:30,322 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-11-14 04:46:30,323 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:46:30,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243910480] [2024-11-14 04:46:30,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243910480] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:46:30,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:46:30,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-14 04:46:30,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303781594] [2024-11-14 04:46:30,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:46:30,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 04:46:30,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:46:30,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 04:46:30,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-14 04:46:30,324 INFO L87 Difference]: Start difference. First operand 47 states and 52 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-14 04:46:30,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:46:30,412 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2024-11-14 04:46:30,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 04:46:30,413 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 58 [2024-11-14 04:46:30,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:46:30,414 INFO L225 Difference]: With dead ends: 47 [2024-11-14 04:46:30,414 INFO L226 Difference]: Without dead ends: 0 [2024-11-14 04:46:30,415 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-14 04:46:30,415 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 3 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:46:30,416 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 47 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:46:30,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-14 04:46:30,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-14 04:46:30,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:46:30,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-14 04:46:30,421 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 58 [2024-11-14 04:46:30,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:46:30,421 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-14 04:46:30,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-14 04:46:30,421 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-14 04:46:30,421 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-14 04:46:30,425 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-14 04:46:30,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-14 04:46:30,430 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:46:30,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-14 04:46:30,573 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-14 04:46:30,598 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.11 04:46:30 BoogieIcfgContainer [2024-11-14 04:46:30,599 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-14 04:46:30,600 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-14 04:46:30,600 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-14 04:46:30,601 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-14 04:46:30,602 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:46:28" (3/4) ... [2024-11-14 04:46:30,604 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-14 04:46:30,609 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-11-14 04:46:30,614 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-14 04:46:30,615 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-14 04:46:30,615 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-14 04:46:30,615 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-14 04:46:30,705 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f1e1ac8-3e28-47b2-b835-11b4b5d3b2ab/bin/utaipan-verify-sOmjnqqW8E/witness.graphml [2024-11-14 04:46:30,706 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f1e1ac8-3e28-47b2-b835-11b4b5d3b2ab/bin/utaipan-verify-sOmjnqqW8E/witness.yml [2024-11-14 04:46:30,706 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-14 04:46:30,707 INFO L158 Benchmark]: Toolchain (without parser) took 3319.51ms. Allocated memory is still 117.4MB. Free memory was 92.3MB in the beginning and 53.6MB in the end (delta: 38.8MB). Peak memory consumption was 37.0MB. Max. memory is 16.1GB. [2024-11-14 04:46:30,707 INFO L158 Benchmark]: CDTParser took 1.21ms. Allocated memory is still 83.9MB. Free memory was 42.1MB in the beginning and 41.9MB in the end (delta: 196.3kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:46:30,707 INFO L158 Benchmark]: CACSL2BoogieTranslator took 236.22ms. Allocated memory is still 117.4MB. Free memory was 91.9MB in the beginning and 81.2MB in the end (delta: 10.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 04:46:30,707 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.52ms. Allocated memory is still 117.4MB. Free memory was 81.2MB in the beginning and 80.3MB in the end (delta: 868.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:46:30,709 INFO L158 Benchmark]: Boogie Preprocessor took 16.90ms. Allocated memory is still 117.4MB. Free memory was 80.3MB in the beginning and 79.5MB in the end (delta: 836.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:46:30,710 INFO L158 Benchmark]: RCFGBuilder took 363.27ms. Allocated memory is still 117.4MB. Free memory was 79.5MB in the beginning and 69.8MB in the end (delta: 9.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-14 04:46:30,710 INFO L158 Benchmark]: TraceAbstraction took 2558.53ms. Allocated memory is still 117.4MB. Free memory was 69.4MB in the beginning and 58.8MB in the end (delta: 10.6MB). Peak memory consumption was 3.5MB. Max. memory is 16.1GB. [2024-11-14 04:46:30,711 INFO L158 Benchmark]: Witness Printer took 106.12ms. Allocated memory is still 117.4MB. Free memory was 57.9MB in the beginning and 53.6MB in the end (delta: 4.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:46:30,712 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.21ms. Allocated memory is still 83.9MB. Free memory was 42.1MB in the beginning and 41.9MB in the end (delta: 196.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 236.22ms. Allocated memory is still 117.4MB. Free memory was 91.9MB in the beginning and 81.2MB in the end (delta: 10.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.52ms. Allocated memory is still 117.4MB. Free memory was 81.2MB in the beginning and 80.3MB in the end (delta: 868.9kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 16.90ms. Allocated memory is still 117.4MB. Free memory was 80.3MB in the beginning and 79.5MB in the end (delta: 836.9kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 363.27ms. Allocated memory is still 117.4MB. Free memory was 79.5MB in the beginning and 69.8MB in the end (delta: 9.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 2558.53ms. Allocated memory is still 117.4MB. Free memory was 69.4MB in the beginning and 58.8MB in the end (delta: 10.6MB). Peak memory consumption was 3.5MB. Max. memory is 16.1GB. * Witness Printer took 106.12ms. Allocated memory is still 117.4MB. Free memory was 57.9MB in the beginning and 53.6MB in the end (delta: 4.4MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.3s, OverallIterations: 7, TraceHistogramMax: 9, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 42 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 30 mSDsluCounter, 306 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 216 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 230 IncrementalHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 90 mSDtfsCounter, 230 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=6, InterpolantAutomatonStates: 39, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 179 NumberOfCodeBlocks, 179 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 172 ConstructedInterpolants, 0 QuantifiedInterpolants, 278 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 317/317 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: (i < 101) - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: ((i <= 99) && (j <= 100)) - ProcedureContractResult [Line: 13]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (cond != 0) Ensures: (cond != 0) RESULT: Ultimate proved your program to be correct! [2024-11-14 04:46:30,749 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f1e1ac8-3e28-47b2-b835-11b4b5d3b2ab/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE