./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label23.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c1ba239-83db-4113-a7e3-c4e53f8435ba/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c1ba239-83db-4113-a7e3-c4e53f8435ba/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c1ba239-83db-4113-a7e3-c4e53f8435ba/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c1ba239-83db-4113-a7e3-c4e53f8435ba/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label23.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c1ba239-83db-4113-a7e3-c4e53f8435ba/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c1ba239-83db-4113-a7e3-c4e53f8435ba/bin/utaipan-verify-t7M7D8N6sZ --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 9f1cd2841a16dfe2f8fe839faac013546a2b72431aadffbb7fe449f6c6dcaf65 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:13:56,294 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:13:56,364 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c1ba239-83db-4113-a7e3-c4e53f8435ba/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-19 04:13:56,370 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:13:56,371 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:13:56,396 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:13:56,397 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:13:56,398 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:13:56,398 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:13:56,399 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:13:56,400 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:13:56,400 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:13:56,401 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:13:56,402 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:13:56,402 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:13:56,403 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:13:56,403 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:13:56,404 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:13:56,405 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:13:56,405 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:13:56,406 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:13:56,407 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:13:56,407 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:13:56,408 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:13:56,409 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:13:56,409 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:13:56,410 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:13:56,410 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:13:56,411 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:13:56,411 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:13:56,412 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:13:56,412 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:13:56,413 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:13:56,413 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:13:56,414 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:13:56,414 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:13:56,415 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:13:56,415 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:13:56,415 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:13:56,416 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:13:56,416 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:13:56,417 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:13:56,417 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:13:56,417 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:13:56,424 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:13:56,425 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c1ba239-83db-4113-a7e3-c4e53f8435ba/bin/utaipan-verify-t7M7D8N6sZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c1ba239-83db-4113-a7e3-c4e53f8435ba/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9f1cd2841a16dfe2f8fe839faac013546a2b72431aadffbb7fe449f6c6dcaf65 [2023-11-19 04:13:56,721 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:13:56,749 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:13:56,751 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:13:56,753 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:13:56,753 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:13:56,755 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c1ba239-83db-4113-a7e3-c4e53f8435ba/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/eca-rers2012/Problem01_label23.c [2023-11-19 04:13:59,768 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:14:00,094 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:14:00,103 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c1ba239-83db-4113-a7e3-c4e53f8435ba/sv-benchmarks/c/eca-rers2012/Problem01_label23.c [2023-11-19 04:14:00,120 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c1ba239-83db-4113-a7e3-c4e53f8435ba/bin/utaipan-verify-t7M7D8N6sZ/data/82f6b95c0/f82408ce57c04d03b477b64fa0a8541e/FLAGe0f4cf07e [2023-11-19 04:14:00,142 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c1ba239-83db-4113-a7e3-c4e53f8435ba/bin/utaipan-verify-t7M7D8N6sZ/data/82f6b95c0/f82408ce57c04d03b477b64fa0a8541e [2023-11-19 04:14:00,148 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:14:00,150 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:14:00,154 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:14:00,154 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:14:00,160 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:14:00,163 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:14:00" (1/1) ... [2023-11-19 04:14:00,164 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4de185f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:00, skipping insertion in model container [2023-11-19 04:14:00,165 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:14:00" (1/1) ... [2023-11-19 04:14:00,236 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:14:00,595 WARN L240 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_1c1ba239-83db-4113-a7e3-c4e53f8435ba/sv-benchmarks/c/eca-rers2012/Problem01_label23.c[17363,17376] [2023-11-19 04:14:00,639 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:14:00,650 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:14:00,787 WARN L240 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_1c1ba239-83db-4113-a7e3-c4e53f8435ba/sv-benchmarks/c/eca-rers2012/Problem01_label23.c[17363,17376] [2023-11-19 04:14:00,822 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:14:00,852 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:14:00,853 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:00 WrapperNode [2023-11-19 04:14:00,854 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:14:00,855 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:14:00,855 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:14:00,855 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:14:00,863 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:00" (1/1) ... [2023-11-19 04:14:00,894 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:00" (1/1) ... [2023-11-19 04:14:00,959 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 658 [2023-11-19 04:14:00,960 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:14:00,961 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:14:00,961 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:14:00,961 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:14:00,972 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:00" (1/1) ... [2023-11-19 04:14:00,972 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:00" (1/1) ... [2023-11-19 04:14:00,990 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:00" (1/1) ... [2023-11-19 04:14:00,991 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:00" (1/1) ... [2023-11-19 04:14:01,032 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:00" (1/1) ... [2023-11-19 04:14:01,040 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:00" (1/1) ... [2023-11-19 04:14:01,058 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:00" (1/1) ... [2023-11-19 04:14:01,063 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:00" (1/1) ... [2023-11-19 04:14:01,070 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:14:01,071 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:14:01,071 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:14:01,071 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:14:01,072 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:00" (1/1) ... [2023-11-19 04:14:01,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:14:01,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c1ba239-83db-4113-a7e3-c4e53f8435ba/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:14:01,106 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c1ba239-83db-4113-a7e3-c4e53f8435ba/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:14:01,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c1ba239-83db-4113-a7e3-c4e53f8435ba/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:14:01,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:14:01,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:14:01,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:14:01,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:14:01,225 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:14:01,227 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:14:02,351 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:14:02,659 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:14:02,660 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 04:14:02,667 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:14:02 BoogieIcfgContainer [2023-11-19 04:14:02,667 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:14:02,671 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:14:02,671 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:14:02,674 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:14:02,675 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:14:00" (1/3) ... [2023-11-19 04:14:02,675 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@266cb41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:14:02, skipping insertion in model container [2023-11-19 04:14:02,675 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:00" (2/3) ... [2023-11-19 04:14:02,677 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@266cb41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:14:02, skipping insertion in model container [2023-11-19 04:14:02,678 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:14:02" (3/3) ... [2023-11-19 04:14:02,679 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label23.c [2023-11-19 04:14:02,698 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:14:02,699 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 04:14:02,762 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:14:02,769 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@19edb505, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:14:02,769 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 04:14:02,774 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 states have internal predecessors, (144), 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) [2023-11-19 04:14:02,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-19 04:14:02,783 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:14:02,784 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:14:02,785 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:14:02,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:14:02,790 INFO L85 PathProgramCache]: Analyzing trace with hash 379012030, now seen corresponding path program 1 times [2023-11-19 04:14:02,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:14:02,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620821841] [2023-11-19 04:14:02,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:14:02,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:14:03,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:14:03,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:14:03,389 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:14:03,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620821841] [2023-11-19 04:14:03,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620821841] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:14:03,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:14:03,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:14:03,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988146226] [2023-11-19 04:14:03,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:14:03,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:14:03,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:14:03,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:14:03,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:14:03,450 INFO L87 Difference]: Start difference. First operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 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) [2023-11-19 04:14:03,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:14:03,907 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2023-11-19 04:14:03,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:14:03,909 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2023-11-19 04:14:03,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:14:03,926 INFO L225 Difference]: With dead ends: 224 [2023-11-19 04:14:03,926 INFO L226 Difference]: Without dead ends: 145 [2023-11-19 04:14:03,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:14:03,933 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 15 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 04:14:03,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 23 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 04:14:03,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-11-19 04:14:03,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2023-11-19 04:14:03,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.8402777777777777) internal successors, (265), 144 states have internal predecessors, (265), 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) [2023-11-19 04:14:03,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 265 transitions. [2023-11-19 04:14:03,985 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 265 transitions. Word has length 71 [2023-11-19 04:14:03,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:14:03,986 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 265 transitions. [2023-11-19 04:14:03,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 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) [2023-11-19 04:14:03,986 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 265 transitions. [2023-11-19 04:14:03,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-19 04:14:03,990 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:14:03,990 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:14:03,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:14:03,991 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:14:03,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:14:03,992 INFO L85 PathProgramCache]: Analyzing trace with hash -615349679, now seen corresponding path program 1 times [2023-11-19 04:14:03,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:14:03,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886453953] [2023-11-19 04:14:03,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:14:03,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:14:04,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:14:04,118 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:14:04,119 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:14:04,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886453953] [2023-11-19 04:14:04,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886453953] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:14:04,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:14:04,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:14:04,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275316197] [2023-11-19 04:14:04,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:14:04,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:14:04,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:14:04,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:14:04,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:14:04,126 INFO L87 Difference]: Start difference. First operand 145 states and 265 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 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) [2023-11-19 04:14:04,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:14:04,528 INFO L93 Difference]: Finished difference Result 431 states and 792 transitions. [2023-11-19 04:14:04,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:14:04,528 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2023-11-19 04:14:04,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:14:04,533 INFO L225 Difference]: With dead ends: 431 [2023-11-19 04:14:04,533 INFO L226 Difference]: Without dead ends: 287 [2023-11-19 04:14:04,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:14:04,541 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 82 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 04:14:04,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 32 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 04:14:04,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2023-11-19 04:14:04,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2023-11-19 04:14:04,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.6993006993006994) internal successors, (486), 286 states have internal predecessors, (486), 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) [2023-11-19 04:14:04,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 486 transitions. [2023-11-19 04:14:04,587 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 486 transitions. Word has length 77 [2023-11-19 04:14:04,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:14:04,587 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 486 transitions. [2023-11-19 04:14:04,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 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) [2023-11-19 04:14:04,588 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 486 transitions. [2023-11-19 04:14:04,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-19 04:14:04,592 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:14:04,593 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:14:04,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 04:14:04,593 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:14:04,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:14:04,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1583667279, now seen corresponding path program 1 times [2023-11-19 04:14:04,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:14:04,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078886901] [2023-11-19 04:14:04,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:14:04,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:14:04,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:14:04,821 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:14:04,822 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:14:04,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078886901] [2023-11-19 04:14:04,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078886901] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:14:04,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:14:04,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:14:04,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167515638] [2023-11-19 04:14:04,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:14:04,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:14:04,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:14:04,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:14:04,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:14:04,828 INFO L87 Difference]: Start difference. First operand 287 states and 486 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2023-11-19 04:14:05,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:14:05,221 INFO L93 Difference]: Finished difference Result 786 states and 1330 transitions. [2023-11-19 04:14:05,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:14:05,222 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-11-19 04:14:05,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:14:05,228 INFO L225 Difference]: With dead ends: 786 [2023-11-19 04:14:05,228 INFO L226 Difference]: Without dead ends: 500 [2023-11-19 04:14:05,235 INFO L412 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 [2023-11-19 04:14:05,241 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 2 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 04:14:05,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 144 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 04:14:05,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2023-11-19 04:14:05,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 358. [2023-11-19 04:14:05,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 357 states have (on average 1.6274509803921569) internal successors, (581), 357 states have internal predecessors, (581), 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) [2023-11-19 04:14:05,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 581 transitions. [2023-11-19 04:14:05,276 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 581 transitions. Word has length 78 [2023-11-19 04:14:05,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:14:05,278 INFO L495 AbstractCegarLoop]: Abstraction has 358 states and 581 transitions. [2023-11-19 04:14:05,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2023-11-19 04:14:05,282 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 581 transitions. [2023-11-19 04:14:05,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-19 04:14:05,285 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:14:05,286 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:14:05,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 04:14:05,286 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:14:05,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:14:05,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1567515934, now seen corresponding path program 1 times [2023-11-19 04:14:05,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:14:05,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776320194] [2023-11-19 04:14:05,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:14:05,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:14:05,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:14:05,633 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:14:05,633 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:14:05,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776320194] [2023-11-19 04:14:05,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776320194] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:14:05,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:14:05,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:14:05,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274073710] [2023-11-19 04:14:05,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:14:05,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:14:05,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:14:05,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:14:05,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:14:05,637 INFO L87 Difference]: Start difference. First operand 358 states and 581 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:14:06,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:14:06,017 INFO L93 Difference]: Finished difference Result 1070 states and 1740 transitions. [2023-11-19 04:14:06,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:14:06,018 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2023-11-19 04:14:06,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:14:06,025 INFO L225 Difference]: With dead ends: 1070 [2023-11-19 04:14:06,025 INFO L226 Difference]: Without dead ends: 642 [2023-11-19 04:14:06,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:14:06,033 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 75 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 04:14:06,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 50 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 04:14:06,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2023-11-19 04:14:06,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2023-11-19 04:14:06,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 641 states have (on average 1.3213728549141965) internal successors, (847), 641 states have internal predecessors, (847), 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) [2023-11-19 04:14:06,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 847 transitions. [2023-11-19 04:14:06,064 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 847 transitions. Word has length 84 [2023-11-19 04:14:06,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:14:06,064 INFO L495 AbstractCegarLoop]: Abstraction has 642 states and 847 transitions. [2023-11-19 04:14:06,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:14:06,065 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 847 transitions. [2023-11-19 04:14:06,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-19 04:14:06,072 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:14:06,073 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:14:06,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 04:14:06,073 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:14:06,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:14:06,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1122585044, now seen corresponding path program 1 times [2023-11-19 04:14:06,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:14:06,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019486045] [2023-11-19 04:14:06,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:14:06,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:14:06,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:14:06,255 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-19 04:14:06,255 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:14:06,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019486045] [2023-11-19 04:14:06,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019486045] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:14:06,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:14:06,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:14:06,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507340687] [2023-11-19 04:14:06,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:14:06,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:14:06,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:14:06,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:14:06,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:14:06,260 INFO L87 Difference]: Start difference. First operand 642 states and 847 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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) [2023-11-19 04:14:06,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:14:06,553 INFO L93 Difference]: Finished difference Result 1496 states and 2001 transitions. [2023-11-19 04:14:06,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:14:06,554 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2023-11-19 04:14:06,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:14:06,559 INFO L225 Difference]: With dead ends: 1496 [2023-11-19 04:14:06,559 INFO L226 Difference]: Without dead ends: 926 [2023-11-19 04:14:06,560 INFO L412 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 [2023-11-19 04:14:06,561 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 69 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:14:06,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 35 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:14:06,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2023-11-19 04:14:06,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 784. [2023-11-19 04:14:06,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 783 states have (on average 1.3231162196679438) internal successors, (1036), 783 states have internal predecessors, (1036), 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) [2023-11-19 04:14:06,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1036 transitions. [2023-11-19 04:14:06,586 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1036 transitions. Word has length 97 [2023-11-19 04:14:06,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:14:06,586 INFO L495 AbstractCegarLoop]: Abstraction has 784 states and 1036 transitions. [2023-11-19 04:14:06,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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) [2023-11-19 04:14:06,587 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1036 transitions. [2023-11-19 04:14:06,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-19 04:14:06,591 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:14:06,591 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:14:06,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 04:14:06,592 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:14:06,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:14:06,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1326613091, now seen corresponding path program 1 times [2023-11-19 04:14:06,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:14:06,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243369120] [2023-11-19 04:14:06,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:14:06,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:14:06,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:14:06,840 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-19 04:14:06,840 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:14:06,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243369120] [2023-11-19 04:14:06,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243369120] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:14:06,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:14:06,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:14:06,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521167206] [2023-11-19 04:14:06,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:14:06,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:14:06,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:14:06,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:14:06,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:14:06,843 INFO L87 Difference]: Start difference. First operand 784 states and 1036 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 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) [2023-11-19 04:14:07,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:14:07,141 INFO L93 Difference]: Finished difference Result 1567 states and 2086 transitions. [2023-11-19 04:14:07,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:14:07,142 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2023-11-19 04:14:07,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:14:07,147 INFO L225 Difference]: With dead ends: 1567 [2023-11-19 04:14:07,147 INFO L226 Difference]: Without dead ends: 855 [2023-11-19 04:14:07,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:14:07,149 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 59 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:14:07,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 50 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:14:07,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2023-11-19 04:14:07,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 855. [2023-11-19 04:14:07,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 854 states have (on average 1.3056206088992974) internal successors, (1115), 854 states have internal predecessors, (1115), 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) [2023-11-19 04:14:07,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1115 transitions. [2023-11-19 04:14:07,175 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1115 transitions. Word has length 99 [2023-11-19 04:14:07,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:14:07,175 INFO L495 AbstractCegarLoop]: Abstraction has 855 states and 1115 transitions. [2023-11-19 04:14:07,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 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) [2023-11-19 04:14:07,175 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1115 transitions. [2023-11-19 04:14:07,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-19 04:14:07,178 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:14:07,178 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:14:07,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 04:14:07,178 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:14:07,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:14:07,179 INFO L85 PathProgramCache]: Analyzing trace with hash -681446245, now seen corresponding path program 1 times [2023-11-19 04:14:07,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:14:07,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002314549] [2023-11-19 04:14:07,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:14:07,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:14:07,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:14:07,386 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-19 04:14:07,386 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:14:07,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002314549] [2023-11-19 04:14:07,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002314549] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:14:07,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:14:07,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:14:07,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162445299] [2023-11-19 04:14:07,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:14:07,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:14:07,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:14:07,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:14:07,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:14:07,389 INFO L87 Difference]: Start difference. First operand 855 states and 1115 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 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) [2023-11-19 04:14:07,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:14:07,879 INFO L93 Difference]: Finished difference Result 1780 states and 2335 transitions. [2023-11-19 04:14:07,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:14:07,879 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2023-11-19 04:14:07,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:14:07,884 INFO L225 Difference]: With dead ends: 1780 [2023-11-19 04:14:07,885 INFO L226 Difference]: Without dead ends: 997 [2023-11-19 04:14:07,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:14:07,887 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 130 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 04:14:07,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 52 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 04:14:07,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2023-11-19 04:14:07,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 926. [2023-11-19 04:14:07,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 925 states have (on average 1.2854054054054054) internal successors, (1189), 925 states have internal predecessors, (1189), 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) [2023-11-19 04:14:07,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1189 transitions. [2023-11-19 04:14:07,917 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1189 transitions. Word has length 103 [2023-11-19 04:14:07,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:14:07,917 INFO L495 AbstractCegarLoop]: Abstraction has 926 states and 1189 transitions. [2023-11-19 04:14:07,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 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) [2023-11-19 04:14:07,918 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1189 transitions. [2023-11-19 04:14:07,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-19 04:14:07,920 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:14:07,920 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:14:07,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 04:14:07,921 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:14:07,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:14:07,921 INFO L85 PathProgramCache]: Analyzing trace with hash 2040989690, now seen corresponding path program 1 times [2023-11-19 04:14:07,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:14:07,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471019551] [2023-11-19 04:14:07,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:14:07,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:14:07,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:14:08,149 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:14:08,149 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:14:08,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471019551] [2023-11-19 04:14:08,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471019551] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:14:08,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:14:08,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:14:08,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833253291] [2023-11-19 04:14:08,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:14:08,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:14:08,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:14:08,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:14:08,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:14:08,152 INFO L87 Difference]: Start difference. First operand 926 states and 1189 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 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) [2023-11-19 04:14:08,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:14:08,577 INFO L93 Difference]: Finished difference Result 1993 states and 2589 transitions. [2023-11-19 04:14:08,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:14:08,577 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2023-11-19 04:14:08,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:14:08,583 INFO L225 Difference]: With dead ends: 1993 [2023-11-19 04:14:08,584 INFO L226 Difference]: Without dead ends: 1068 [2023-11-19 04:14:08,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:14:08,586 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 133 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 04:14:08,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 49 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 04:14:08,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2023-11-19 04:14:08,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 926. [2023-11-19 04:14:08,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 925 states have (on average 1.2572972972972973) internal successors, (1163), 925 states have internal predecessors, (1163), 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) [2023-11-19 04:14:08,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1163 transitions. [2023-11-19 04:14:08,611 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1163 transitions. Word has length 121 [2023-11-19 04:14:08,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:14:08,612 INFO L495 AbstractCegarLoop]: Abstraction has 926 states and 1163 transitions. [2023-11-19 04:14:08,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 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) [2023-11-19 04:14:08,612 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1163 transitions. [2023-11-19 04:14:08,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-11-19 04:14:08,615 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:14:08,615 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:14:08,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 04:14:08,616 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:14:08,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:14:08,616 INFO L85 PathProgramCache]: Analyzing trace with hash 433137106, now seen corresponding path program 1 times [2023-11-19 04:14:08,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:14:08,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461464143] [2023-11-19 04:14:08,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:14:08,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:14:08,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:14:08,873 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-19 04:14:08,873 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:14:08,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461464143] [2023-11-19 04:14:08,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461464143] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:14:08,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:14:08,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:14:08,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972610679] [2023-11-19 04:14:08,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:14:08,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:14:08,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:14:08,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:14:08,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:14:08,876 INFO L87 Difference]: Start difference. First operand 926 states and 1163 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2023-11-19 04:14:09,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:14:09,175 INFO L93 Difference]: Finished difference Result 1920 states and 2416 transitions. [2023-11-19 04:14:09,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:14:09,176 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2023-11-19 04:14:09,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:14:09,177 INFO L225 Difference]: With dead ends: 1920 [2023-11-19 04:14:09,177 INFO L226 Difference]: Without dead ends: 0 [2023-11-19 04:14:09,179 INFO L412 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 [2023-11-19 04:14:09,179 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 14 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:14:09,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 93 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:14:09,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-19 04:14:09,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-19 04:14:09,181 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) [2023-11-19 04:14:09,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-19 04:14:09,181 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 137 [2023-11-19 04:14:09,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:14:09,182 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 04:14:09,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2023-11-19 04:14:09,182 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-19 04:14:09,182 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-19 04:14:09,185 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 04:14:09,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 04:14:09,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-19 04:14:09,305 INFO L899 garLoopResultBuilder]: For program point L102(lines 102 400) no Hoare annotation was computed. [2023-11-19 04:14:09,305 INFO L899 garLoopResultBuilder]: For program point L598(line 598) no Hoare annotation was computed. [2023-11-19 04:14:09,305 INFO L899 garLoopResultBuilder]: For program point L334(lines 334 400) no Hoare annotation was computed. [2023-11-19 04:14:09,305 INFO L899 garLoopResultBuilder]: For program point L467-1(lines 40 585) no Hoare annotation was computed. [2023-11-19 04:14:09,305 INFO L899 garLoopResultBuilder]: For program point L302(lines 302 400) no Hoare annotation was computed. [2023-11-19 04:14:09,305 INFO L899 garLoopResultBuilder]: For program point L170(lines 170 400) no Hoare annotation was computed. [2023-11-19 04:14:09,305 INFO L899 garLoopResultBuilder]: For program point L204(lines 204 400) no Hoare annotation was computed. [2023-11-19 04:14:09,306 INFO L899 garLoopResultBuilder]: For program point L72(lines 72 400) no Hoare annotation was computed. [2023-11-19 04:14:09,306 INFO L899 garLoopResultBuilder]: For program point L271(lines 271 400) no Hoare annotation was computed. [2023-11-19 04:14:09,306 INFO L899 garLoopResultBuilder]: For program point L139(lines 139 400) no Hoare annotation was computed. [2023-11-19 04:14:09,306 INFO L899 garLoopResultBuilder]: For program point L470-1(lines 40 585) no Hoare annotation was computed. [2023-11-19 04:14:09,306 INFO L899 garLoopResultBuilder]: For program point L371(lines 371 400) no Hoare annotation was computed. [2023-11-19 04:14:09,306 INFO L899 garLoopResultBuilder]: For program point L107(lines 107 400) no Hoare annotation was computed. [2023-11-19 04:14:09,306 INFO L899 garLoopResultBuilder]: For program point L41(lines 41 400) no Hoare annotation was computed. [2023-11-19 04:14:09,306 INFO L899 garLoopResultBuilder]: For program point L471(line 471) no Hoare annotation was computed. [2023-11-19 04:14:09,307 INFO L899 garLoopResultBuilder]: For program point L339(lines 339 400) no Hoare annotation was computed. [2023-11-19 04:14:09,307 INFO L899 garLoopResultBuilder]: For program point L207(lines 207 400) no Hoare annotation was computed. [2023-11-19 04:14:09,307 INFO L899 garLoopResultBuilder]: For program point L75(lines 75 400) no Hoare annotation was computed. [2023-11-19 04:14:09,307 INFO L899 garLoopResultBuilder]: For program point L373(lines 373 400) no Hoare annotation was computed. [2023-11-19 04:14:09,307 INFO L899 garLoopResultBuilder]: For program point L241(lines 241 400) no Hoare annotation was computed. [2023-11-19 04:14:09,307 INFO L899 garLoopResultBuilder]: For program point L175(lines 175 400) no Hoare annotation was computed. [2023-11-19 04:14:09,307 INFO L899 garLoopResultBuilder]: For program point L275(lines 275 400) no Hoare annotation was computed. [2023-11-19 04:14:09,307 INFO L899 garLoopResultBuilder]: For program point L375(lines 375 400) no Hoare annotation was computed. [2023-11-19 04:14:09,308 INFO L899 garLoopResultBuilder]: For program point L309(lines 309 400) no Hoare annotation was computed. [2023-11-19 04:14:09,308 INFO L899 garLoopResultBuilder]: For program point L45(lines 45 400) no Hoare annotation was computed. [2023-11-19 04:14:09,309 INFO L899 garLoopResultBuilder]: For program point L343(lines 343 400) no Hoare annotation was computed. [2023-11-19 04:14:09,309 INFO L899 garLoopResultBuilder]: For program point L112(lines 112 400) no Hoare annotation was computed. [2023-11-19 04:14:09,309 INFO L899 garLoopResultBuilder]: For program point L278(lines 278 400) no Hoare annotation was computed. [2023-11-19 04:14:09,309 INFO L899 garLoopResultBuilder]: For program point L146(lines 146 400) no Hoare annotation was computed. [2023-11-19 04:14:09,309 INFO L899 garLoopResultBuilder]: For program point L213(lines 213 400) no Hoare annotation was computed. [2023-11-19 04:14:09,310 INFO L899 garLoopResultBuilder]: For program point L82(lines 82 400) no Hoare annotation was computed. [2023-11-19 04:14:09,311 INFO L899 garLoopResultBuilder]: For program point L347(lines 347 400) no Hoare annotation was computed. [2023-11-19 04:14:09,311 INFO L899 garLoopResultBuilder]: For program point L248(lines 248 400) no Hoare annotation was computed. [2023-11-19 04:14:09,311 INFO L899 garLoopResultBuilder]: For program point L183(lines 183 400) no Hoare annotation was computed. [2023-11-19 04:14:09,311 INFO L899 garLoopResultBuilder]: For program point L150(lines 150 400) no Hoare annotation was computed. [2023-11-19 04:14:09,311 INFO L899 garLoopResultBuilder]: For program point L382(lines 382 400) no Hoare annotation was computed. [2023-11-19 04:14:09,311 INFO L899 garLoopResultBuilder]: For program point L316(lines 316 400) no Hoare annotation was computed. [2023-11-19 04:14:09,312 INFO L899 garLoopResultBuilder]: For program point L283(lines 283 400) no Hoare annotation was computed. [2023-11-19 04:14:09,312 INFO L899 garLoopResultBuilder]: For program point L118(lines 118 400) no Hoare annotation was computed. [2023-11-19 04:14:09,312 INFO L899 garLoopResultBuilder]: For program point L218(lines 218 400) no Hoare annotation was computed. [2023-11-19 04:14:09,312 INFO L899 garLoopResultBuilder]: For program point L53(lines 53 400) no Hoare annotation was computed. [2023-11-19 04:14:09,312 INFO L899 garLoopResultBuilder]: For program point L154(lines 154 400) no Hoare annotation was computed. [2023-11-19 04:14:09,312 INFO L899 garLoopResultBuilder]: For program point L188(lines 188 400) no Hoare annotation was computed. [2023-11-19 04:14:09,312 INFO L899 garLoopResultBuilder]: For program point L387(lines 387 400) no Hoare annotation was computed. [2023-11-19 04:14:09,312 INFO L899 garLoopResultBuilder]: For program point L288(lines 288 400) no Hoare annotation was computed. [2023-11-19 04:14:09,313 INFO L899 garLoopResultBuilder]: For program point L255(lines 255 400) no Hoare annotation was computed. [2023-11-19 04:14:09,313 INFO L899 garLoopResultBuilder]: For program point L90(lines 90 400) no Hoare annotation was computed. [2023-11-19 04:14:09,313 INFO L899 garLoopResultBuilder]: For program point L355(lines 355 400) no Hoare annotation was computed. [2023-11-19 04:14:09,313 INFO L899 garLoopResultBuilder]: For program point L322(lines 322 400) no Hoare annotation was computed. [2023-11-19 04:14:09,313 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-19 04:14:09,313 INFO L899 garLoopResultBuilder]: For program point L124(lines 124 400) no Hoare annotation was computed. [2023-11-19 04:14:09,313 INFO L899 garLoopResultBuilder]: For program point L587(lines 587 604) no Hoare annotation was computed. [2023-11-19 04:14:09,313 INFO L899 garLoopResultBuilder]: For program point L224(lines 224 400) no Hoare annotation was computed. [2023-11-19 04:14:09,314 INFO L899 garLoopResultBuilder]: For program point L158(lines 158 400) no Hoare annotation was computed. [2023-11-19 04:14:09,314 INFO L899 garLoopResultBuilder]: For program point L59(lines 59 400) no Hoare annotation was computed. [2023-11-19 04:14:09,314 INFO L899 garLoopResultBuilder]: For program point L94(lines 94 400) no Hoare annotation was computed. [2023-11-19 04:14:09,315 INFO L899 garLoopResultBuilder]: For program point L392(lines 392 400) no Hoare annotation was computed. [2023-11-19 04:14:09,315 INFO L899 garLoopResultBuilder]: For program point L326(lines 326 400) no Hoare annotation was computed. [2023-11-19 04:14:09,315 INFO L899 garLoopResultBuilder]: For program point L260(lines 260 400) no Hoare annotation was computed. [2023-11-19 04:14:09,315 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-19 04:14:09,315 INFO L899 garLoopResultBuilder]: For program point L228(lines 228 400) no Hoare annotation was computed. [2023-11-19 04:14:09,315 INFO L899 garLoopResultBuilder]: For program point L162(lines 162 400) no Hoare annotation was computed. [2023-11-19 04:14:09,315 INFO L899 garLoopResultBuilder]: For program point L129(lines 129 400) no Hoare annotation was computed. [2023-11-19 04:14:09,315 INFO L899 garLoopResultBuilder]: For program point L328(lines 328 400) no Hoare annotation was computed. [2023-11-19 04:14:09,316 INFO L899 garLoopResultBuilder]: For program point L196(lines 196 400) no Hoare annotation was computed. [2023-11-19 04:14:09,316 INFO L899 garLoopResultBuilder]: For program point L64(lines 64 400) no Hoare annotation was computed. [2023-11-19 04:14:09,316 INFO L895 garLoopResultBuilder]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse0 (= ~a20~0 1))) (or (< ~a8~0 14) (and (not (= ~a7~0 1)) .cse0) (= ~a20~0 0) (and (<= 5 ~a16~0) .cse0))) [2023-11-19 04:14:09,316 INFO L899 garLoopResultBuilder]: For program point L296(lines 296 400) no Hoare annotation was computed. [2023-11-19 04:14:09,316 INFO L899 garLoopResultBuilder]: For program point calculate_output_returnLabel#1(lines 40 585) no Hoare annotation was computed. [2023-11-19 04:14:09,317 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 471) no Hoare annotation was computed. [2023-11-19 04:14:09,317 INFO L899 garLoopResultBuilder]: For program point L363(lines 363 400) no Hoare annotation was computed. [2023-11-19 04:14:09,317 INFO L899 garLoopResultBuilder]: For program point L199(lines 199 400) no Hoare annotation was computed. [2023-11-19 04:14:09,317 INFO L899 garLoopResultBuilder]: For program point L365(lines 365 400) no Hoare annotation was computed. [2023-11-19 04:14:09,317 INFO L899 garLoopResultBuilder]: For program point L266(lines 266 400) no Hoare annotation was computed. [2023-11-19 04:14:09,317 INFO L899 garLoopResultBuilder]: For program point L233(lines 233 400) no Hoare annotation was computed. [2023-11-19 04:14:09,317 INFO L899 garLoopResultBuilder]: For program point L134(lines 134 400) no Hoare annotation was computed. [2023-11-19 04:14:09,320 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:14:09,322 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 04:14:09,338 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 04:14:09 BoogieIcfgContainer [2023-11-19 04:14:09,338 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 04:14:09,339 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 04:14:09,339 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 04:14:09,339 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 04:14:09,340 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:14:02" (3/4) ... [2023-11-19 04:14:09,341 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 04:14:09,370 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 111 nodes and edges [2023-11-19 04:14:09,371 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2023-11-19 04:14:09,373 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2023-11-19 04:14:09,375 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 04:14:09,554 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c1ba239-83db-4113-a7e3-c4e53f8435ba/bin/utaipan-verify-t7M7D8N6sZ/witness.graphml [2023-11-19 04:14:09,554 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c1ba239-83db-4113-a7e3-c4e53f8435ba/bin/utaipan-verify-t7M7D8N6sZ/witness.yml [2023-11-19 04:14:09,554 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 04:14:09,555 INFO L158 Benchmark]: Toolchain (without parser) took 9404.87ms. Allocated memory was 218.1MB in the beginning and 272.6MB in the end (delta: 54.5MB). Free memory was 168.8MB in the beginning and 182.6MB in the end (delta: -13.8MB). Peak memory consumption was 42.8MB. Max. memory is 16.1GB. [2023-11-19 04:14:09,555 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 151.0MB. Free memory is still 93.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:14:09,556 INFO L158 Benchmark]: CACSL2BoogieTranslator took 700.01ms. Allocated memory is still 218.1MB. Free memory was 168.0MB in the beginning and 139.9MB in the end (delta: 28.1MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-11-19 04:14:09,556 INFO L158 Benchmark]: Boogie Procedure Inliner took 105.14ms. Allocated memory is still 218.1MB. Free memory was 139.9MB in the beginning and 133.6MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-19 04:14:09,557 INFO L158 Benchmark]: Boogie Preprocessor took 109.46ms. Allocated memory is still 218.1MB. Free memory was 133.6MB in the beginning and 129.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 04:14:09,557 INFO L158 Benchmark]: RCFGBuilder took 1596.11ms. Allocated memory is still 218.1MB. Free memory was 129.4MB in the beginning and 100.6MB in the end (delta: 28.8MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2023-11-19 04:14:09,558 INFO L158 Benchmark]: TraceAbstraction took 6667.52ms. Allocated memory was 218.1MB in the beginning and 272.6MB in the end (delta: 54.5MB). Free memory was 99.6MB in the beginning and 196.3MB in the end (delta: -96.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:14:09,558 INFO L158 Benchmark]: Witness Printer took 215.72ms. Allocated memory is still 272.6MB. Free memory was 196.3MB in the beginning and 182.6MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 04:14:09,563 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 151.0MB. Free memory is still 93.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 700.01ms. Allocated memory is still 218.1MB. Free memory was 168.0MB in the beginning and 139.9MB in the end (delta: 28.1MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 105.14ms. Allocated memory is still 218.1MB. Free memory was 139.9MB in the beginning and 133.6MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 109.46ms. Allocated memory is still 218.1MB. Free memory was 133.6MB in the beginning and 129.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1596.11ms. Allocated memory is still 218.1MB. Free memory was 129.4MB in the beginning and 100.6MB in the end (delta: 28.8MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. * TraceAbstraction took 6667.52ms. Allocated memory was 218.1MB in the beginning and 272.6MB in the end (delta: 54.5MB). Free memory was 99.6MB in the beginning and 196.3MB in the end (delta: -96.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 215.72ms. Allocated memory is still 272.6MB. Free memory was 196.3MB in the beginning and 182.6MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. 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: 471]: 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 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6.6s, OverallIterations: 9, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 579 SdHoareTripleChecker+Valid, 3.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 579 mSDsluCounter, 528 SdHoareTripleChecker+Invalid, 2.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 41 mSDsCounter, 447 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2140 IncrementalHoareTripleChecker+Invalid, 2587 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 447 mSolverCounterUnsat, 487 mSDtfsCounter, 2140 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=926occurred in iteration=7, InterpolantAutomatonStates: 29, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 497 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 17 NumberOfFragments, 22 HoareAnnotationTreeSize, 1 FomulaSimplifications, 672 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 1 FomulaSimplificationsInter, 105 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 867 NumberOfCodeBlocks, 867 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 858 ConstructedInterpolants, 0 QuantifiedInterpolants, 1719 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 306/306 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: 593]: Loop Invariant Derived loop invariant: ((((a8 < 14) || (!((a7 == 1)) && (a20 == 1))) || (a20 == 0)) || ((5 <= a16) && (a20 == 1))) RESULT: Ultimate proved your program to be correct! [2023-11-19 04:14:09,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c1ba239-83db-4113-a7e3-c4e53f8435ba/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE