./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-lit/hh2012-ex1b.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b11661-0e91-45a3-b2eb-f462a7a72952/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b11661-0e91-45a3-b2eb-f462a7a72952/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b11661-0e91-45a3-b2eb-f462a7a72952/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b11661-0e91-45a3-b2eb-f462a7a72952/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-lit/hh2012-ex1b.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b11661-0e91-45a3-b2eb-f462a7a72952/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b11661-0e91-45a3-b2eb-f462a7a72952/bin/utaipan-verify-YMUCfTKeje --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7ce79fe11836d82ec064e02fff135ad9866417774e7d276b3384b4d4dde863b5 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 07:04:40,047 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 07:04:40,138 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b11661-0e91-45a3-b2eb-f462a7a72952/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 07:04:40,146 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 07:04:40,149 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 07:04:40,189 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 07:04:40,192 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 07:04:40,193 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 07:04:40,194 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 07:04:40,194 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 07:04:40,194 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 07:04:40,195 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 07:04:40,195 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 07:04:40,196 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 07:04:40,196 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 07:04:40,196 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 07:04:40,197 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 07:04:40,197 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 07:04:40,197 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 07:04:40,198 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 07:04:40,198 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 07:04:40,199 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 07:04:40,199 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 07:04:40,200 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 07:04:40,200 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 07:04:40,200 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 07:04:40,200 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 07:04:40,201 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 07:04:40,201 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 07:04:40,201 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 07:04:40,202 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 07:04:40,202 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 07:04:40,202 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 07:04:40,202 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 07:04:40,206 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 07:04:40,207 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 07:04:40,207 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 07:04:40,207 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 07:04:40,223 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 07:04:40,225 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 07:04:40,226 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 07:04:40,227 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 07:04:40,227 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 07:04:40,228 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 07:04:40,228 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 07:04:40,228 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 07:04:40,228 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 07:04:40,229 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_74b11661-0e91-45a3-b2eb-f462a7a72952/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b11661-0e91-45a3-b2eb-f462a7a72952/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7ce79fe11836d82ec064e02fff135ad9866417774e7d276b3384b4d4dde863b5 [2024-11-09 07:04:40,524 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 07:04:40,557 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 07:04:40,561 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 07:04:40,563 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 07:04:40,564 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 07:04:40,566 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b11661-0e91-45a3-b2eb-f462a7a72952/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/loop-lit/hh2012-ex1b.i Unable to find full path for "g++" [2024-11-09 07:04:43,099 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 07:04:43,286 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 07:04:43,287 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b11661-0e91-45a3-b2eb-f462a7a72952/sv-benchmarks/c/loop-lit/hh2012-ex1b.i [2024-11-09 07:04:43,297 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b11661-0e91-45a3-b2eb-f462a7a72952/bin/utaipan-verify-YMUCfTKeje/data/c2efdc739/f76e45efc3094256aaab5f39bec4c0fd/FLAG2e376e8a8 [2024-11-09 07:04:43,316 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b11661-0e91-45a3-b2eb-f462a7a72952/bin/utaipan-verify-YMUCfTKeje/data/c2efdc739/f76e45efc3094256aaab5f39bec4c0fd [2024-11-09 07:04:43,320 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 07:04:43,321 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 07:04:43,323 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 07:04:43,324 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 07:04:43,332 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 07:04:43,333 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:04:43" (1/1) ... [2024-11-09 07:04:43,334 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@447792f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:04:43, skipping insertion in model container [2024-11-09 07:04:43,337 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:04:43" (1/1) ... [2024-11-09 07:04:43,371 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 07:04:43,593 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b11661-0e91-45a3-b2eb-f462a7a72952/sv-benchmarks/c/loop-lit/hh2012-ex1b.i[800,813] [2024-11-09 07:04:43,610 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:04:43,623 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 07:04:43,639 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b11661-0e91-45a3-b2eb-f462a7a72952/sv-benchmarks/c/loop-lit/hh2012-ex1b.i[800,813] [2024-11-09 07:04:43,644 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:04:43,666 INFO L204 MainTranslator]: Completed translation [2024-11-09 07:04:43,666 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:04:43 WrapperNode [2024-11-09 07:04:43,667 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 07:04:43,668 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 07:04:43,668 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 07:04:43,669 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 07:04:43,678 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:04:43" (1/1) ... [2024-11-09 07:04:43,685 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:04:43" (1/1) ... [2024-11-09 07:04:43,701 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 29 [2024-11-09 07:04:43,702 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 07:04:43,703 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 07:04:43,703 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 07:04:43,703 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 07:04:43,715 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:04:43" (1/1) ... [2024-11-09 07:04:43,715 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:04:43" (1/1) ... [2024-11-09 07:04:43,716 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:04:43" (1/1) ... [2024-11-09 07:04:43,717 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:04:43" (1/1) ... [2024-11-09 07:04:43,720 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:04:43" (1/1) ... [2024-11-09 07:04:43,724 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:04:43" (1/1) ... [2024-11-09 07:04:43,725 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:04:43" (1/1) ... [2024-11-09 07:04:43,726 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:04:43" (1/1) ... [2024-11-09 07:04:43,732 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 07:04:43,733 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 07:04:43,733 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 07:04:43,734 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 07:04:43,735 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:04:43" (1/1) ... [2024-11-09 07:04:43,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 07:04:43,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b11661-0e91-45a3-b2eb-f462a7a72952/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:04:43,772 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b11661-0e91-45a3-b2eb-f462a7a72952/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 07:04:43,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b11661-0e91-45a3-b2eb-f462a7a72952/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 07:04:43,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 07:04:43,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 07:04:43,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 07:04:43,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 07:04:43,820 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-09 07:04:43,820 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-09 07:04:43,913 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 07:04:43,916 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 07:04:44,137 INFO L? ?]: Removed 4 outVars from TransFormulas that were not future-live. [2024-11-09 07:04:44,137 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 07:04:44,183 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 07:04:44,183 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 07:04:44,184 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:04:44 BoogieIcfgContainer [2024-11-09 07:04:44,184 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 07:04:44,188 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 07:04:44,189 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 07:04:44,193 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 07:04:44,194 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:04:43" (1/3) ... [2024-11-09 07:04:44,195 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ecbcd61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:04:44, skipping insertion in model container [2024-11-09 07:04:44,196 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:04:43" (2/3) ... [2024-11-09 07:04:44,196 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ecbcd61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:04:44, skipping insertion in model container [2024-11-09 07:04:44,197 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:04:44" (3/3) ... [2024-11-09 07:04:44,199 INFO L112 eAbstractionObserver]: Analyzing ICFG hh2012-ex1b.i [2024-11-09 07:04:44,222 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 07:04:44,223 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 07:04:44,310 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 07:04:44,324 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@c5b0731, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 07:04:44,324 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 07:04:44,330 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 12 states have (on average 1.5) internal successors, (18), 14 states have internal predecessors, (18), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-09 07:04:44,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-09 07:04:44,338 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:04:44,339 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-09 07:04:44,339 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:04:44,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:04:44,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1746250825, now seen corresponding path program 1 times [2024-11-09 07:04:44,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:04:44,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264955441] [2024-11-09 07:04:44,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:04:44,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:04:44,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:04:44,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:04:44,567 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:04:44,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264955441] [2024-11-09 07:04:44,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264955441] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:04:44,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:04:44,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 07:04:44,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433474646] [2024-11-09 07:04:44,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:04:44,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:04:44,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:04:44,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:04:44,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:04:44,649 INFO L87 Difference]: Start difference. First operand has 19 states, 12 states have (on average 1.5) internal successors, (18), 14 states have internal predecessors, (18), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:04:44,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:04:44,732 INFO L93 Difference]: Finished difference Result 44 states and 70 transitions. [2024-11-09 07:04:44,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:04:44,738 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-09 07:04:44,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:04:44,756 INFO L225 Difference]: With dead ends: 44 [2024-11-09 07:04:44,756 INFO L226 Difference]: Without dead ends: 24 [2024-11-09 07:04:44,761 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:04:44,765 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 6 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:04:44,767 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 38 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:04:44,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-09 07:04:44,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 19. [2024-11-09 07:04:44,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 15 states have internal predecessors, (18), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 07:04:44,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2024-11-09 07:04:44,828 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 25 transitions. Word has length 6 [2024-11-09 07:04:44,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:04:44,829 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 25 transitions. [2024-11-09 07:04:44,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:04:44,829 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 25 transitions. [2024-11-09 07:04:44,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-09 07:04:44,830 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:04:44,830 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:04:44,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 07:04:44,831 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:04:44,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:04:44,832 INFO L85 PathProgramCache]: Analyzing trace with hash 116229647, now seen corresponding path program 1 times [2024-11-09 07:04:44,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:04:44,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631323880] [2024-11-09 07:04:44,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:04:44,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:04:44,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:04:44,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:04:44,917 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:04:44,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631323880] [2024-11-09 07:04:44,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631323880] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:04:44,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:04:44,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:04:44,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375059771] [2024-11-09 07:04:44,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:04:44,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:04:44,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:04:44,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:04:44,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:04:44,922 INFO L87 Difference]: Start difference. First operand 19 states and 25 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:04:44,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:04:44,966 INFO L93 Difference]: Finished difference Result 37 states and 51 transitions. [2024-11-09 07:04:44,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:04:44,967 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-09 07:04:44,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:04:44,968 INFO L225 Difference]: With dead ends: 37 [2024-11-09 07:04:44,969 INFO L226 Difference]: Without dead ends: 21 [2024-11-09 07:04:44,969 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:04:44,971 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 1 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:04:44,972 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 36 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:04:44,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-09 07:04:44,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-11-09 07:04:44,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 16 states have internal predecessors, (20), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 07:04:44,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 27 transitions. [2024-11-09 07:04:44,980 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 27 transitions. Word has length 8 [2024-11-09 07:04:44,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:04:44,981 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 27 transitions. [2024-11-09 07:04:44,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:04:44,981 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 27 transitions. [2024-11-09 07:04:44,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-09 07:04:44,982 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:04:44,982 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:04:44,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 07:04:44,983 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:04:44,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:04:44,984 INFO L85 PathProgramCache]: Analyzing trace with hash -948262279, now seen corresponding path program 1 times [2024-11-09 07:04:44,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:04:44,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759827375] [2024-11-09 07:04:44,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:04:44,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:04:45,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:04:45,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:04:45,221 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:04:45,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759827375] [2024-11-09 07:04:45,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759827375] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:04:45,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:04:45,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 07:04:45,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830825324] [2024-11-09 07:04:45,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:04:45,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 07:04:45,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:04:45,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 07:04:45,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 07:04:45,227 INFO L87 Difference]: Start difference. First operand 21 states and 27 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:04:45,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:04:45,315 INFO L93 Difference]: Finished difference Result 46 states and 61 transitions. [2024-11-09 07:04:45,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 07:04:45,316 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-09 07:04:45,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:04:45,319 INFO L225 Difference]: With dead ends: 46 [2024-11-09 07:04:45,320 INFO L226 Difference]: Without dead ends: 28 [2024-11-09 07:04:45,321 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-09 07:04:45,324 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 4 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:04:45,325 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 61 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:04:45,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-09 07:04:45,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-11-09 07:04:45,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.25) internal successors, (25), 21 states have internal predecessors, (25), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-09 07:04:45,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2024-11-09 07:04:45,344 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 9 [2024-11-09 07:04:45,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:04:45,345 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2024-11-09 07:04:45,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:04:45,346 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2024-11-09 07:04:45,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-09 07:04:45,348 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:04:45,349 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:04:45,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 07:04:45,349 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:04:45,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:04:45,350 INFO L85 PathProgramCache]: Analyzing trace with hash -2078894252, now seen corresponding path program 1 times [2024-11-09 07:04:45,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:04:45,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866694482] [2024-11-09 07:04:45,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:04:45,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:04:45,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:04:45,574 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 07:04:45,576 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:04:45,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866694482] [2024-11-09 07:04:45,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866694482] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:04:45,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:04:45,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 07:04:45,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877975873] [2024-11-09 07:04:45,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:04:45,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 07:04:45,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:04:45,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 07:04:45,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 07:04:45,584 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 07:04:45,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:04:45,707 INFO L93 Difference]: Finished difference Result 57 states and 69 transitions. [2024-11-09 07:04:45,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 07:04:45,712 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2024-11-09 07:04:45,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:04:45,713 INFO L225 Difference]: With dead ends: 57 [2024-11-09 07:04:45,713 INFO L226 Difference]: Without dead ends: 32 [2024-11-09 07:04:45,714 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-09 07:04:45,716 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 5 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:04:45,717 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 62 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:04:45,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-09 07:04:45,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2024-11-09 07:04:45,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-09 07:04:45,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2024-11-09 07:04:45,735 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 16 [2024-11-09 07:04:45,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:04:45,736 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2024-11-09 07:04:45,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 07:04:45,737 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2024-11-09 07:04:45,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-09 07:04:45,738 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:04:45,739 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:04:45,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 07:04:45,739 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:04:45,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:04:45,741 INFO L85 PathProgramCache]: Analyzing trace with hash 686993007, now seen corresponding path program 1 times [2024-11-09 07:04:45,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:04:45,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990068641] [2024-11-09 07:04:45,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:04:45,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:04:45,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:04:45,963 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 07:04:45,963 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:04:45,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990068641] [2024-11-09 07:04:45,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990068641] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:04:45,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:04:45,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 07:04:45,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476237564] [2024-11-09 07:04:45,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:04:45,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 07:04:45,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:04:45,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 07:04:45,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-09 07:04:45,970 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 07:04:46,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:04:46,094 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2024-11-09 07:04:46,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 07:04:46,095 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2024-11-09 07:04:46,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:04:46,096 INFO L225 Difference]: With dead ends: 37 [2024-11-09 07:04:46,096 INFO L226 Difference]: Without dead ends: 35 [2024-11-09 07:04:46,096 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 07:04:46,101 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 5 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:04:46,102 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 59 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:04:46,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-09 07:04:46,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2024-11-09 07:04:46,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 25 states have (on average 1.16) internal successors, (29), 26 states have internal predecessors, (29), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-09 07:04:46,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2024-11-09 07:04:46,122 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 22 [2024-11-09 07:04:46,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:04:46,123 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2024-11-09 07:04:46,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 07:04:46,124 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2024-11-09 07:04:46,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-09 07:04:46,126 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:04:46,127 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:04:46,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 07:04:46,129 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:04:46,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:04:46,130 INFO L85 PathProgramCache]: Analyzing trace with hash -88631, now seen corresponding path program 1 times [2024-11-09 07:04:46,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:04:46,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008367238] [2024-11-09 07:04:46,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:04:46,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:04:46,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:04:46,367 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-09 07:04:46,367 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:04:46,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008367238] [2024-11-09 07:04:46,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008367238] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:04:46,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:04:46,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 07:04:46,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277390427] [2024-11-09 07:04:46,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:04:46,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 07:04:46,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:04:46,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 07:04:46,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 07:04:46,374 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 07:04:46,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:04:46,494 INFO L93 Difference]: Finished difference Result 68 states and 81 transitions. [2024-11-09 07:04:46,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 07:04:46,495 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2024-11-09 07:04:46,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:04:46,496 INFO L225 Difference]: With dead ends: 68 [2024-11-09 07:04:46,496 INFO L226 Difference]: Without dead ends: 61 [2024-11-09 07:04:46,497 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-09 07:04:46,498 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 9 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:04:46,499 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 66 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:04:46,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-09 07:04:46,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 52. [2024-11-09 07:04:46,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 37 states have (on average 1.135135135135135) internal successors, (42), 38 states have internal predecessors, (42), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-09 07:04:46,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2024-11-09 07:04:46,512 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 28 [2024-11-09 07:04:46,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:04:46,513 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2024-11-09 07:04:46,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 07:04:46,513 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2024-11-09 07:04:46,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-09 07:04:46,515 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:04:46,515 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-09 07:04:46,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 07:04:46,515 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:04:46,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:04:46,516 INFO L85 PathProgramCache]: Analyzing trace with hash 57194609, now seen corresponding path program 1 times [2024-11-09 07:04:46,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:04:46,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508938245] [2024-11-09 07:04:46,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:04:46,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:04:46,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:04:46,674 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-11-09 07:04:46,674 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:04:46,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508938245] [2024-11-09 07:04:46,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508938245] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:04:46,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:04:46,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 07:04:46,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431799191] [2024-11-09 07:04:46,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:04:46,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 07:04:46,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:04:46,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 07:04:46,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 07:04:46,678 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 07:04:46,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:04:46,736 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2024-11-09 07:04:46,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 07:04:46,736 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 57 [2024-11-09 07:04:46,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:04:46,738 INFO L225 Difference]: With dead ends: 63 [2024-11-09 07:04:46,738 INFO L226 Difference]: Without dead ends: 54 [2024-11-09 07:04:46,739 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-09 07:04:46,740 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 5 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:04:46,740 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 50 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:04:46,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-09 07:04:46,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2024-11-09 07:04:46,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 38 states have internal predecessors, (41), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-09 07:04:46,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2024-11-09 07:04:46,753 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 57 [2024-11-09 07:04:46,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:04:46,754 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2024-11-09 07:04:46,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 07:04:46,755 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2024-11-09 07:04:46,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-09 07:04:46,756 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:04:46,756 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-09 07:04:46,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 07:04:46,757 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:04:46,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:04:46,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1674906441, now seen corresponding path program 1 times [2024-11-09 07:04:46,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:04:46,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413683608] [2024-11-09 07:04:46,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:04:46,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:04:46,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:04:46,953 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2024-11-09 07:04:46,953 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:04:46,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413683608] [2024-11-09 07:04:46,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413683608] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:04:46,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:04:46,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 07:04:46,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107632009] [2024-11-09 07:04:46,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:04:46,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 07:04:46,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:04:46,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 07:04:46,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-09 07:04:46,958 INFO L87 Difference]: Start difference. First operand 53 states and 58 transitions. Second operand has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-09 07:04:47,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:04:47,039 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2024-11-09 07:04:47,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 07:04:47,040 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 64 [2024-11-09 07:04:47,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:04:47,041 INFO L225 Difference]: With dead ends: 53 [2024-11-09 07:04:47,041 INFO L226 Difference]: Without dead ends: 0 [2024-11-09 07:04:47,041 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 07:04:47,042 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 3 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:04:47,043 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 55 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:04:47,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-09 07:04:47,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-09 07:04:47,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:04:47,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-09 07:04:47,047 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 64 [2024-11-09 07:04:47,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:04:47,047 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-09 07:04:47,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-09 07:04:47,048 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-09 07:04:47,048 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-09 07:04:47,052 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-09 07:04:47,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 07:04:47,057 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:04:47,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-09 07:04:47,223 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 07:04:47,253 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 07:04:47 BoogieIcfgContainer [2024-11-09 07:04:47,253 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 07:04:47,254 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 07:04:47,254 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 07:04:47,255 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 07:04:47,255 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:04:44" (3/4) ... [2024-11-09 07:04:47,259 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-09 07:04:47,264 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-11-09 07:04:47,270 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-09 07:04:47,270 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-09 07:04:47,271 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-09 07:04:47,271 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-09 07:04:47,370 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b11661-0e91-45a3-b2eb-f462a7a72952/bin/utaipan-verify-YMUCfTKeje/witness.graphml [2024-11-09 07:04:47,370 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b11661-0e91-45a3-b2eb-f462a7a72952/bin/utaipan-verify-YMUCfTKeje/witness.yml [2024-11-09 07:04:47,371 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 07:04:47,372 INFO L158 Benchmark]: Toolchain (without parser) took 4050.26ms. Allocated memory was 130.0MB in the beginning and 180.4MB in the end (delta: 50.3MB). Free memory was 90.2MB in the beginning and 142.2MB in the end (delta: -51.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 07:04:47,372 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 130.0MB. Free memory is still 100.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 07:04:47,372 INFO L158 Benchmark]: CACSL2BoogieTranslator took 343.96ms. Allocated memory is still 130.0MB. Free memory was 89.8MB in the beginning and 77.7MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-09 07:04:47,373 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.20ms. Allocated memory is still 130.0MB. Free memory was 77.7MB in the beginning and 76.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 07:04:47,373 INFO L158 Benchmark]: Boogie Preprocessor took 29.35ms. Allocated memory is still 130.0MB. Free memory was 76.4MB in the beginning and 75.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 07:04:47,374 INFO L158 Benchmark]: RCFGBuilder took 450.79ms. Allocated memory is still 130.0MB. Free memory was 75.2MB in the beginning and 64.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-09 07:04:47,374 INFO L158 Benchmark]: TraceAbstraction took 3065.37ms. Allocated memory was 130.0MB in the beginning and 180.4MB in the end (delta: 50.3MB). Free memory was 63.8MB in the beginning and 147.3MB in the end (delta: -83.5MB). Peak memory consumption was 39.2MB. Max. memory is 16.1GB. [2024-11-09 07:04:47,375 INFO L158 Benchmark]: Witness Printer took 116.85ms. Allocated memory is still 180.4MB. Free memory was 146.4MB in the beginning and 142.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-09 07:04:47,377 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 130.0MB. Free memory is still 100.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 343.96ms. Allocated memory is still 130.0MB. Free memory was 89.8MB in the beginning and 77.7MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.20ms. Allocated memory is still 130.0MB. Free memory was 77.7MB in the beginning and 76.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 29.35ms. Allocated memory is still 130.0MB. Free memory was 76.4MB in the beginning and 75.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 450.79ms. Allocated memory is still 130.0MB. Free memory was 75.2MB in the beginning and 64.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 3065.37ms. Allocated memory was 130.0MB in the beginning and 180.4MB in the end (delta: 50.3MB). Free memory was 63.8MB in the beginning and 147.3MB in the end (delta: -83.5MB). Peak memory consumption was 39.2MB. Max. memory is 16.1GB. * Witness Printer took 116.85ms. Allocated memory is still 180.4MB. Free memory was 146.4MB in the beginning and 142.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.8s, OverallIterations: 8, TraceHistogramMax: 9, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 50 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 38 mSDsluCounter, 427 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 293 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 245 IncrementalHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 134 mSDtfsCounter, 245 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred in iteration=7, InterpolantAutomatonStates: 44, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 16 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 210 NumberOfCodeBlocks, 210 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 202 ConstructedInterpolants, 0 QuantifiedInterpolants, 334 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 334/334 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: (i < 101) - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: ((i <= 99) && (j <= 100)) - ProcedureContractResult [Line: 13]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (cond != 0) Ensures: (cond != 0) RESULT: Ultimate proved your program to be correct! [2024-11-09 07:04:47,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b11661-0e91-45a3-b2eb-f462a7a72952/bin/utaipan-verify-YMUCfTKeje/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