./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label03.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 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_d3f74263-87de-47b7-b740-8fe52f36914a/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f74263-87de-47b7-b740-8fe52f36914a/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f74263-87de-47b7-b740-8fe52f36914a/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f74263-87de-47b7-b740-8fe52f36914a/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label03.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f74263-87de-47b7-b740-8fe52f36914a/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f74263-87de-47b7-b740-8fe52f36914a/bin/utaipan-verify-NcY6lQBIFX --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 9a49aea6b3c1edfc7fe3f8f7bab6422e16330d8432eb730cabe992a1ced0cbc2 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:59:20,852 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:59:20,921 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f74263-87de-47b7-b740-8fe52f36914a/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-12 00:59:20,927 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:59:20,928 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:59:20,955 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:59:20,956 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:59:20,957 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:59:20,958 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:59:20,959 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:59:20,959 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:59:20,960 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:59:20,961 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:59:20,962 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:59:20,962 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:59:20,963 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:59:20,964 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:59:20,964 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:59:20,965 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:59:20,965 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:59:20,966 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:59:20,967 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:59:20,968 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:59:20,968 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:59:20,969 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:59:20,969 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:59:20,970 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:59:20,970 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:59:20,971 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:59:20,971 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:59:20,972 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:59:20,972 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:59:20,973 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:59:20,973 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:59:20,973 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:59:20,974 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:59:20,974 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:59:20,975 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:59:20,975 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:59:20,975 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:59:20,976 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:59:20,976 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:59:20,976 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:59:20,977 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:59:20,977 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:59:20,977 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_d3f74263-87de-47b7-b740-8fe52f36914a/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f74263-87de-47b7-b740-8fe52f36914a/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a49aea6b3c1edfc7fe3f8f7bab6422e16330d8432eb730cabe992a1ced0cbc2 [2023-11-12 00:59:21,309 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:59:21,340 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:59:21,343 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:59:21,345 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:59:21,345 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:59:21,349 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f74263-87de-47b7-b740-8fe52f36914a/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/eca-rers2012/Problem01_label03.c [2023-11-12 00:59:24,504 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:59:24,792 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:59:24,793 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f74263-87de-47b7-b740-8fe52f36914a/sv-benchmarks/c/eca-rers2012/Problem01_label03.c [2023-11-12 00:59:24,807 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f74263-87de-47b7-b740-8fe52f36914a/bin/utaipan-verify-NcY6lQBIFX/data/606ef70fd/f24e095c9c374c2fae6e3f82bdb1d82a/FLAG0c6330158 [2023-11-12 00:59:24,831 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f74263-87de-47b7-b740-8fe52f36914a/bin/utaipan-verify-NcY6lQBIFX/data/606ef70fd/f24e095c9c374c2fae6e3f82bdb1d82a [2023-11-12 00:59:24,834 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:59:24,835 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:59:24,837 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:59:24,837 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:59:24,847 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:59:24,848 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:59:24" (1/1) ... [2023-11-12 00:59:24,849 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@be45417 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:59:24, skipping insertion in model container [2023-11-12 00:59:24,849 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:59:24" (1/1) ... [2023-11-12 00:59:24,920 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:59:25,265 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_d3f74263-87de-47b7-b740-8fe52f36914a/sv-benchmarks/c/eca-rers2012/Problem01_label03.c[21586,21599] [2023-11-12 00:59:25,304 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:59:25,322 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:59:25,524 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_d3f74263-87de-47b7-b740-8fe52f36914a/sv-benchmarks/c/eca-rers2012/Problem01_label03.c[21586,21599] [2023-11-12 00:59:25,538 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:59:25,560 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:59:25,561 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:59:25 WrapperNode [2023-11-12 00:59:25,561 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:59:25,562 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:59:25,563 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:59:25,563 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:59:25,571 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:59:25" (1/1) ... [2023-11-12 00:59:25,600 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:59:25" (1/1) ... [2023-11-12 00:59:25,668 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 658 [2023-11-12 00:59:25,675 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:59:25,676 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:59:25,676 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:59:25,676 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:59:25,686 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:59:25" (1/1) ... [2023-11-12 00:59:25,686 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:59:25" (1/1) ... [2023-11-12 00:59:25,691 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:59:25" (1/1) ... [2023-11-12 00:59:25,691 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:59:25" (1/1) ... [2023-11-12 00:59:25,724 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:59:25" (1/1) ... [2023-11-12 00:59:25,749 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:59:25" (1/1) ... [2023-11-12 00:59:25,767 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:59:25" (1/1) ... [2023-11-12 00:59:25,773 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:59:25" (1/1) ... [2023-11-12 00:59:25,786 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:59:25,787 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:59:25,788 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:59:25,788 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:59:25,789 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:59:25" (1/1) ... [2023-11-12 00:59:25,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:59:25,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f74263-87de-47b7-b740-8fe52f36914a/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:59:25,864 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f74263-87de-47b7-b740-8fe52f36914a/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:59:25,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f74263-87de-47b7-b740-8fe52f36914a/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:59:25,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:59:25,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:59:25,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:59:25,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:59:25,986 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:59:25,989 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:59:27,104 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:59:27,376 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:59:27,376 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 00:59:27,379 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:59:27 BoogieIcfgContainer [2023-11-12 00:59:27,379 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:59:27,383 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:59:27,383 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:59:27,386 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:59:27,387 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:59:24" (1/3) ... [2023-11-12 00:59:27,388 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49e4237d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:59:27, skipping insertion in model container [2023-11-12 00:59:27,388 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:59:25" (2/3) ... [2023-11-12 00:59:27,390 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49e4237d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:59:27, skipping insertion in model container [2023-11-12 00:59:27,390 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:59:27" (3/3) ... [2023-11-12 00:59:27,393 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label03.c [2023-11-12 00:59:27,412 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:59:27,412 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:59:27,462 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:59:27,468 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;@ed33e9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:59:27,469 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:59:27,473 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) [2023-11-12 00:59:27,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-12 00:59:27,482 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:59:27,483 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] [2023-11-12 00:59:27,483 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:59:27,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:59:27,488 INFO L85 PathProgramCache]: Analyzing trace with hash -104645944, now seen corresponding path program 1 times [2023-11-12 00:59:27,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:59:27,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080112345] [2023-11-12 00:59:27,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:59:27,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:59:27,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:59:28,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:59:28,086 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:59:28,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080112345] [2023-11-12 00:59:28,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080112345] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:59:28,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:59:28,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:59:28,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219123763] [2023-11-12 00:59:28,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:59:28,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:59:28,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:59:28,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:59:28,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:59:28,140 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) [2023-11-12 00:59:28,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:59:28,705 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2023-11-12 00:59:28,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:59:28,708 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 [2023-11-12 00:59:28,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:59:28,726 INFO L225 Difference]: With dead ends: 224 [2023-11-12 00:59:28,726 INFO L226 Difference]: Without dead ends: 145 [2023-11-12 00:59:28,729 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 [2023-11-12 00:59:28,736 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 21 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-12 00:59:28,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 29 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-12 00:59:28,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-11-12 00:59:28,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2023-11-12 00:59:28,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.7986111111111112) internal successors, (259), 144 states have internal predecessors, (259), 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) [2023-11-12 00:59:28,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 259 transitions. [2023-11-12 00:59:28,811 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 259 transitions. Word has length 71 [2023-11-12 00:59:28,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:59:28,812 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 259 transitions. [2023-11-12 00:59:28,813 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) [2023-11-12 00:59:28,813 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 259 transitions. [2023-11-12 00:59:28,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-12 00:59:28,816 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:59:28,817 INFO L195 NwaCegarLoop]: trace histogram [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, 1] [2023-11-12 00:59:28,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:59:28,818 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:59:28,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:59:28,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1478015714, now seen corresponding path program 1 times [2023-11-12 00:59:28,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:59:28,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544791944] [2023-11-12 00:59:28,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:59:28,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:59:28,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:59:28,957 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:59:28,957 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:59:28,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544791944] [2023-11-12 00:59:28,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544791944] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:59:28,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:59:28,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:59:28,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284731782] [2023-11-12 00:59:28,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:59:28,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:59:28,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:59:28,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:59:28,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:59:28,962 INFO L87 Difference]: Start difference. First operand 145 states and 259 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 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) [2023-11-12 00:59:29,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:59:29,424 INFO L93 Difference]: Finished difference Result 431 states and 774 transitions. [2023-11-12 00:59:29,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:59:29,425 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 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 76 [2023-11-12 00:59:29,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:59:29,427 INFO L225 Difference]: With dead ends: 431 [2023-11-12 00:59:29,428 INFO L226 Difference]: Without dead ends: 287 [2023-11-12 00:59:29,429 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 [2023-11-12 00:59:29,431 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 112 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 00:59:29,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 25 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 00:59:29,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2023-11-12 00:59:29,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2023-11-12 00:59:29,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.6783216783216783) internal successors, (480), 286 states have internal predecessors, (480), 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) [2023-11-12 00:59:29,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 480 transitions. [2023-11-12 00:59:29,453 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 480 transitions. Word has length 76 [2023-11-12 00:59:29,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:59:29,453 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 480 transitions. [2023-11-12 00:59:29,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 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) [2023-11-12 00:59:29,454 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 480 transitions. [2023-11-12 00:59:29,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-12 00:59:29,458 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:59:29,458 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2023-11-12 00:59:29,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 00:59:29,459 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:59:29,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:59:29,460 INFO L85 PathProgramCache]: Analyzing trace with hash -751421164, now seen corresponding path program 1 times [2023-11-12 00:59:29,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:59:29,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697173677] [2023-11-12 00:59:29,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:59:29,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:59:29,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:59:29,624 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:59:29,625 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:59:29,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697173677] [2023-11-12 00:59:29,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697173677] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:59:29,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:59:29,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:59:29,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439380051] [2023-11-12 00:59:29,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:59:29,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:59:29,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:59:29,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:59:29,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:59:29,629 INFO L87 Difference]: Start difference. First operand 287 states and 480 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 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) [2023-11-12 00:59:30,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:59:30,039 INFO L93 Difference]: Finished difference Result 786 states and 1318 transitions. [2023-11-12 00:59:30,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:59:30,040 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 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 80 [2023-11-12 00:59:30,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:59:30,044 INFO L225 Difference]: With dead ends: 786 [2023-11-12 00:59:30,044 INFO L226 Difference]: Without dead ends: 500 [2023-11-12 00:59:30,049 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 [2023-11-12 00:59:30,053 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 82 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 00:59:30,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 13 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 00:59:30,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2023-11-12 00:59:30,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 500. [2023-11-12 00:59:30,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 499 states have (on average 1.6332665330661322) internal successors, (815), 499 states have internal predecessors, (815), 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) [2023-11-12 00:59:30,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 815 transitions. [2023-11-12 00:59:30,106 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 815 transitions. Word has length 80 [2023-11-12 00:59:30,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:59:30,109 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 815 transitions. [2023-11-12 00:59:30,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 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) [2023-11-12 00:59:30,113 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 815 transitions. [2023-11-12 00:59:30,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-12 00:59:30,118 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:59:30,119 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] [2023-11-12 00:59:30,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 00:59:30,120 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:59:30,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:59:30,121 INFO L85 PathProgramCache]: Analyzing trace with hash -359580406, now seen corresponding path program 1 times [2023-11-12 00:59:30,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:59:30,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023841943] [2023-11-12 00:59:30,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:59:30,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:59:30,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:59:30,493 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:59:30,493 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:59:30,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023841943] [2023-11-12 00:59:30,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023841943] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:59:30,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:59:30,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:59:30,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47200838] [2023-11-12 00:59:30,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:59:30,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:59:30,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:59:30,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:59:30,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:59:30,498 INFO L87 Difference]: Start difference. First operand 500 states and 815 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) [2023-11-12 00:59:30,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:59:30,854 INFO L93 Difference]: Finished difference Result 999 states and 1629 transitions. [2023-11-12 00:59:30,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:59:30,854 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 [2023-11-12 00:59:30,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:59:30,858 INFO L225 Difference]: With dead ends: 999 [2023-11-12 00:59:30,858 INFO L226 Difference]: Without dead ends: 500 [2023-11-12 00:59:30,859 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 [2023-11-12 00:59:30,860 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 69 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:59:30,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 57 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 00:59:30,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2023-11-12 00:59:30,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 500. [2023-11-12 00:59:30,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 499 states have (on average 1.6092184368737474) internal successors, (803), 499 states have internal predecessors, (803), 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) [2023-11-12 00:59:30,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 803 transitions. [2023-11-12 00:59:30,878 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 803 transitions. Word has length 84 [2023-11-12 00:59:30,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:59:30,879 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 803 transitions. [2023-11-12 00:59:30,879 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) [2023-11-12 00:59:30,879 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 803 transitions. [2023-11-12 00:59:30,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-12 00:59:30,881 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:59:30,881 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:59:30,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 00:59:30,882 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:59:30,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:59:30,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1882244357, now seen corresponding path program 1 times [2023-11-12 00:59:30,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:59:30,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423440213] [2023-11-12 00:59:30,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:59:30,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:59:30,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:59:31,084 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:59:31,084 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:59:31,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423440213] [2023-11-12 00:59:31,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423440213] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:59:31,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:59:31,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:59:31,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796968591] [2023-11-12 00:59:31,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:59:31,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:59:31,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:59:31,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:59:31,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:59:31,088 INFO L87 Difference]: Start difference. First operand 500 states and 803 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 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) [2023-11-12 00:59:31,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:59:31,466 INFO L93 Difference]: Finished difference Result 1212 states and 1902 transitions. [2023-11-12 00:59:31,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:59:31,467 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 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 86 [2023-11-12 00:59:31,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:59:31,472 INFO L225 Difference]: With dead ends: 1212 [2023-11-12 00:59:31,472 INFO L226 Difference]: Without dead ends: 713 [2023-11-12 00:59:31,473 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 [2023-11-12 00:59:31,475 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 62 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:59:31,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 58 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 00:59:31,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2023-11-12 00:59:31,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 642. [2023-11-12 00:59:31,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 641 states have (on average 1.5210608424336973) internal successors, (975), 641 states have internal predecessors, (975), 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) [2023-11-12 00:59:31,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 975 transitions. [2023-11-12 00:59:31,500 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 975 transitions. Word has length 86 [2023-11-12 00:59:31,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:59:31,500 INFO L495 AbstractCegarLoop]: Abstraction has 642 states and 975 transitions. [2023-11-12 00:59:31,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 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) [2023-11-12 00:59:31,501 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 975 transitions. [2023-11-12 00:59:31,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-12 00:59:31,503 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:59:31,503 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:59:31,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 00:59:31,504 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:59:31,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:59:31,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1075072947, now seen corresponding path program 1 times [2023-11-12 00:59:31,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:59:31,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52277871] [2023-11-12 00:59:31,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:59:31,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:59:31,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:59:31,750 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:59:31,750 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:59:31,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52277871] [2023-11-12 00:59:31,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52277871] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:59:31,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:59:31,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:59:31,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021328847] [2023-11-12 00:59:31,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:59:31,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:59:31,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:59:31,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:59:31,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:59:31,754 INFO L87 Difference]: Start difference. First operand 642 states and 975 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 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) [2023-11-12 00:59:32,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:59:32,293 INFO L93 Difference]: Finished difference Result 1496 states and 2210 transitions. [2023-11-12 00:59:32,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:59:32,294 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 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 90 [2023-11-12 00:59:32,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:59:32,299 INFO L225 Difference]: With dead ends: 1496 [2023-11-12 00:59:32,303 INFO L226 Difference]: Without dead ends: 855 [2023-11-12 00:59:32,304 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 [2023-11-12 00:59:32,308 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 138 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-12 00:59:32,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 55 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-12 00:59:32,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2023-11-12 00:59:32,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 784. [2023-11-12 00:59:32,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 783 states have (on average 1.4572158365261814) internal successors, (1141), 783 states have internal predecessors, (1141), 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) [2023-11-12 00:59:32,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1141 transitions. [2023-11-12 00:59:32,342 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1141 transitions. Word has length 90 [2023-11-12 00:59:32,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:59:32,343 INFO L495 AbstractCegarLoop]: Abstraction has 784 states and 1141 transitions. [2023-11-12 00:59:32,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 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) [2023-11-12 00:59:32,343 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1141 transitions. [2023-11-12 00:59:32,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-12 00:59:32,345 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:59:32,345 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2023-11-12 00:59:32,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 00:59:32,346 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:59:32,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:59:32,347 INFO L85 PathProgramCache]: Analyzing trace with hash -302996274, now seen corresponding path program 1 times [2023-11-12 00:59:32,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:59:32,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126896270] [2023-11-12 00:59:32,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:59:32,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:59:32,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:59:32,614 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:59:32,614 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:59:32,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126896270] [2023-11-12 00:59:32,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126896270] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:59:32,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:59:32,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:59:32,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816831025] [2023-11-12 00:59:32,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:59:32,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:59:32,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:59:32,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:59:32,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:59:32,618 INFO L87 Difference]: Start difference. First operand 784 states and 1141 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2023-11-12 00:59:33,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:59:33,051 INFO L93 Difference]: Finished difference Result 1638 states and 2358 transitions. [2023-11-12 00:59:33,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:59:33,052 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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 108 [2023-11-12 00:59:33,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:59:33,059 INFO L225 Difference]: With dead ends: 1638 [2023-11-12 00:59:33,060 INFO L226 Difference]: Without dead ends: 855 [2023-11-12 00:59:33,061 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 [2023-11-12 00:59:33,062 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 3 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 00:59:33,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 126 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 00:59:33,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2023-11-12 00:59:33,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 784. [2023-11-12 00:59:33,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 783 states have (on average 1.3780332056194124) internal successors, (1079), 783 states have internal predecessors, (1079), 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) [2023-11-12 00:59:33,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1079 transitions. [2023-11-12 00:59:33,092 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1079 transitions. Word has length 108 [2023-11-12 00:59:33,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:59:33,093 INFO L495 AbstractCegarLoop]: Abstraction has 784 states and 1079 transitions. [2023-11-12 00:59:33,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2023-11-12 00:59:33,093 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1079 transitions. [2023-11-12 00:59:33,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-12 00:59:33,096 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:59:33,096 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2023-11-12 00:59:33,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 00:59:33,097 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:59:33,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:59:33,097 INFO L85 PathProgramCache]: Analyzing trace with hash 248437359, now seen corresponding path program 1 times [2023-11-12 00:59:33,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:59:33,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034822479] [2023-11-12 00:59:33,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:59:33,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:59:33,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:59:33,704 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 3 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:59:33,705 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:59:33,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034822479] [2023-11-12 00:59:33,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034822479] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:59:33,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016021689] [2023-11-12 00:59:33,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:59:33,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:59:33,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f74263-87de-47b7-b740-8fe52f36914a/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:59:33,715 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f74263-87de-47b7-b740-8fe52f36914a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:59:33,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f74263-87de-47b7-b740-8fe52f36914a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 00:59:33,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:59:33,870 INFO L262 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 00:59:33,878 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:59:34,099 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-12 00:59:34,100 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:59:34,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016021689] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:59:34,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 00:59:34,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-11-12 00:59:34,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072014802] [2023-11-12 00:59:34,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:59:34,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:59:34,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:59:34,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:59:34,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:59:34,102 INFO L87 Difference]: Start difference. First operand 784 states and 1079 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 2 states have internal predecessors, (74), 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) [2023-11-12 00:59:34,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:59:34,442 INFO L93 Difference]: Finished difference Result 1212 states and 1621 transitions. [2023-11-12 00:59:34,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:59:34,443 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 2 states have internal predecessors, (74), 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 [2023-11-12 00:59:34,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:59:34,451 INFO L225 Difference]: With dead ends: 1212 [2023-11-12 00:59:34,451 INFO L226 Difference]: Without dead ends: 1210 [2023-11-12 00:59:34,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:59:34,452 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 22 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:59:34,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 27 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 00:59:34,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2023-11-12 00:59:34,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1210. [2023-11-12 00:59:34,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1210 states, 1209 states have (on average 1.339123242349049) internal successors, (1619), 1209 states have internal predecessors, (1619), 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) [2023-11-12 00:59:34,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1619 transitions. [2023-11-12 00:59:34,486 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1619 transitions. Word has length 121 [2023-11-12 00:59:34,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:59:34,487 INFO L495 AbstractCegarLoop]: Abstraction has 1210 states and 1619 transitions. [2023-11-12 00:59:34,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 2 states have internal predecessors, (74), 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) [2023-11-12 00:59:34,487 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1619 transitions. [2023-11-12 00:59:34,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-11-12 00:59:34,490 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:59:34,491 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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, 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] [2023-11-12 00:59:34,497 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f74263-87de-47b7-b740-8fe52f36914a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-12 00:59:34,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f74263-87de-47b7-b740-8fe52f36914a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:59:34,697 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:59:34,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:59:34,698 INFO L85 PathProgramCache]: Analyzing trace with hash 193480320, now seen corresponding path program 1 times [2023-11-12 00:59:34,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:59:34,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811761996] [2023-11-12 00:59:34,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:59:34,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:59:34,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:59:34,827 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-12 00:59:34,830 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:59:34,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811761996] [2023-11-12 00:59:34,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811761996] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:59:34,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:59:34,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:59:34,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872706805] [2023-11-12 00:59:34,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:59:34,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:59:34,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:59:34,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:59:34,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:59:34,835 INFO L87 Difference]: Start difference. First operand 1210 states and 1619 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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) [2023-11-12 00:59:35,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:59:35,210 INFO L93 Difference]: Finished difference Result 2632 states and 3541 transitions. [2023-11-12 00:59:35,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:59:35,210 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 128 [2023-11-12 00:59:35,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:59:35,217 INFO L225 Difference]: With dead ends: 2632 [2023-11-12 00:59:35,218 INFO L226 Difference]: Without dead ends: 1281 [2023-11-12 00:59:35,219 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 [2023-11-12 00:59:35,220 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 76 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:59:35,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 125 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 00:59:35,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2023-11-12 00:59:35,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1281. [2023-11-12 00:59:35,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1281 states, 1280 states have (on average 1.1765625) internal successors, (1506), 1280 states have internal predecessors, (1506), 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) [2023-11-12 00:59:35,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1281 states to 1281 states and 1506 transitions. [2023-11-12 00:59:35,255 INFO L78 Accepts]: Start accepts. Automaton has 1281 states and 1506 transitions. Word has length 128 [2023-11-12 00:59:35,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:59:35,256 INFO L495 AbstractCegarLoop]: Abstraction has 1281 states and 1506 transitions. [2023-11-12 00:59:35,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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) [2023-11-12 00:59:35,256 INFO L276 IsEmpty]: Start isEmpty. Operand 1281 states and 1506 transitions. [2023-11-12 00:59:35,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-12 00:59:35,260 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:59:35,260 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:59:35,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 00:59:35,260 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:59:35,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:59:35,261 INFO L85 PathProgramCache]: Analyzing trace with hash -995776605, now seen corresponding path program 1 times [2023-11-12 00:59:35,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:59:35,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872225441] [2023-11-12 00:59:35,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:59:35,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:59:35,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:59:35,475 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-12 00:59:35,475 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:59:35,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872225441] [2023-11-12 00:59:35,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872225441] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:59:35,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:59:35,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:59:35,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635469960] [2023-11-12 00:59:35,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:59:35,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:59:35,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:59:35,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:59:35,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:59:35,478 INFO L87 Difference]: Start difference. First operand 1281 states and 1506 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 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) [2023-11-12 00:59:35,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:59:35,775 INFO L93 Difference]: Finished difference Result 2916 states and 3450 transitions. [2023-11-12 00:59:35,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:59:35,776 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 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 135 [2023-11-12 00:59:35,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:59:35,785 INFO L225 Difference]: With dead ends: 2916 [2023-11-12 00:59:35,785 INFO L226 Difference]: Without dead ends: 1565 [2023-11-12 00:59:35,789 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 [2023-11-12 00:59:35,790 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 37 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:59:35,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 46 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 00:59:35,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2023-11-12 00:59:35,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 1565. [2023-11-12 00:59:35,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1565 states, 1564 states have (on average 1.157928388746803) internal successors, (1811), 1564 states have internal predecessors, (1811), 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) [2023-11-12 00:59:35,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 1811 transitions. [2023-11-12 00:59:35,839 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 1811 transitions. Word has length 135 [2023-11-12 00:59:35,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:59:35,840 INFO L495 AbstractCegarLoop]: Abstraction has 1565 states and 1811 transitions. [2023-11-12 00:59:35,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 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) [2023-11-12 00:59:35,840 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 1811 transitions. [2023-11-12 00:59:35,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-11-12 00:59:35,844 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:59:35,844 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2023-11-12 00:59:35,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 00:59:35,845 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:59:35,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:59:35,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1023150750, now seen corresponding path program 1 times [2023-11-12 00:59:35,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:59:35,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497926263] [2023-11-12 00:59:35,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:59:35,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:59:35,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:59:36,244 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 90 proven. 6 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-12 00:59:36,244 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:59:36,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497926263] [2023-11-12 00:59:36,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497926263] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:59:36,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388969964] [2023-11-12 00:59:36,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:59:36,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:59:36,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f74263-87de-47b7-b740-8fe52f36914a/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:59:36,247 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f74263-87de-47b7-b740-8fe52f36914a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:59:36,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f74263-87de-47b7-b740-8fe52f36914a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 00:59:36,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:59:36,401 INFO L262 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 00:59:36,407 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:59:36,526 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-11-12 00:59:36,526 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:59:36,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388969964] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:59:36,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 00:59:36,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-11-12 00:59:36,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800256882] [2023-11-12 00:59:36,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:59:36,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:59:36,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:59:36,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:59:36,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:59:36,529 INFO L87 Difference]: Start difference. First operand 1565 states and 1811 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) 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) [2023-11-12 00:59:36,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:59:36,842 INFO L93 Difference]: Finished difference Result 3129 states and 3621 transitions. [2023-11-12 00:59:36,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:59:36,860 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) 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 148 [2023-11-12 00:59:36,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:59:36,870 INFO L225 Difference]: With dead ends: 3129 [2023-11-12 00:59:36,870 INFO L226 Difference]: Without dead ends: 1565 [2023-11-12 00:59:36,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:59:36,873 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 14 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:59:36,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 102 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 00:59:36,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2023-11-12 00:59:36,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 1494. [2023-11-12 00:59:36,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1494 states, 1493 states have (on average 1.132618888144675) internal successors, (1691), 1493 states have internal predecessors, (1691), 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) [2023-11-12 00:59:36,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 1691 transitions. [2023-11-12 00:59:36,919 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 1691 transitions. Word has length 148 [2023-11-12 00:59:36,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:59:36,920 INFO L495 AbstractCegarLoop]: Abstraction has 1494 states and 1691 transitions. [2023-11-12 00:59:36,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) 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) [2023-11-12 00:59:36,921 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 1691 transitions. [2023-11-12 00:59:36,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-12 00:59:36,925 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:59:36,925 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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, 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] [2023-11-12 00:59:36,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f74263-87de-47b7-b740-8fe52f36914a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 00:59:37,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f74263-87de-47b7-b740-8fe52f36914a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-12 00:59:37,131 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:59:37,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:59:37,131 INFO L85 PathProgramCache]: Analyzing trace with hash 454188870, now seen corresponding path program 1 times [2023-11-12 00:59:37,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:59:37,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749483970] [2023-11-12 00:59:37,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:59:37,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:59:37,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:59:37,500 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 109 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:59:37,501 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:59:37,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749483970] [2023-11-12 00:59:37,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749483970] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:59:37,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200654828] [2023-11-12 00:59:37,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:59:37,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:59:37,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f74263-87de-47b7-b740-8fe52f36914a/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:59:37,503 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f74263-87de-47b7-b740-8fe52f36914a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:59:37,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f74263-87de-47b7-b740-8fe52f36914a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 00:59:37,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:59:37,680 INFO L262 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 00:59:37,691 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:59:37,799 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-12 00:59:37,799 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:59:37,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200654828] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:59:37,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 00:59:37,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-11-12 00:59:37,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584976033] [2023-11-12 00:59:37,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:59:37,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:59:37,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:59:37,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:59:37,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:59:37,803 INFO L87 Difference]: Start difference. First operand 1494 states and 1691 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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) [2023-11-12 00:59:38,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:59:38,085 INFO L93 Difference]: Finished difference Result 1496 states and 1692 transitions. [2023-11-12 00:59:38,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:59:38,086 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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 151 [2023-11-12 00:59:38,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:59:38,095 INFO L225 Difference]: With dead ends: 1496 [2023-11-12 00:59:38,096 INFO L226 Difference]: Without dead ends: 1494 [2023-11-12 00:59:38,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:59:38,097 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 23 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:59:38,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 26 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 00:59:38,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1494 states. [2023-11-12 00:59:38,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1494 to 997. [2023-11-12 00:59:38,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 996 states have (on average 1.1395582329317269) internal successors, (1135), 996 states have internal predecessors, (1135), 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) [2023-11-12 00:59:38,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1135 transitions. [2023-11-12 00:59:38,142 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1135 transitions. Word has length 151 [2023-11-12 00:59:38,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:59:38,143 INFO L495 AbstractCegarLoop]: Abstraction has 997 states and 1135 transitions. [2023-11-12 00:59:38,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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) [2023-11-12 00:59:38,143 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1135 transitions. [2023-11-12 00:59:38,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-11-12 00:59:38,147 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:59:38,148 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:59:38,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f74263-87de-47b7-b740-8fe52f36914a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 00:59:38,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f74263-87de-47b7-b740-8fe52f36914a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:59:38,354 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:59:38,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:59:38,355 INFO L85 PathProgramCache]: Analyzing trace with hash -770830164, now seen corresponding path program 1 times [2023-11-12 00:59:38,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:59:38,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058469228] [2023-11-12 00:59:38,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:59:38,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:59:38,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:59:38,722 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 99 proven. 6 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-12 00:59:38,722 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:59:38,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058469228] [2023-11-12 00:59:38,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058469228] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:59:38,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895281223] [2023-11-12 00:59:38,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:59:38,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:59:38,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f74263-87de-47b7-b740-8fe52f36914a/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:59:38,724 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f74263-87de-47b7-b740-8fe52f36914a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:59:38,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f74263-87de-47b7-b740-8fe52f36914a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 00:59:38,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:59:38,893 INFO L262 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 00:59:38,898 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:59:39,021 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-12 00:59:39,021 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:59:39,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895281223] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:59:39,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 00:59:39,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-11-12 00:59:39,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681857507] [2023-11-12 00:59:39,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:59:39,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:59:39,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:59:39,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:59:39,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:59:39,024 INFO L87 Difference]: Start difference. First operand 997 states and 1135 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) 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) [2023-11-12 00:59:39,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:59:39,295 INFO L93 Difference]: Finished difference Result 997 states and 1135 transitions. [2023-11-12 00:59:39,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:59:39,296 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) 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 157 [2023-11-12 00:59:39,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:59:39,296 INFO L225 Difference]: With dead ends: 997 [2023-11-12 00:59:39,297 INFO L226 Difference]: Without dead ends: 0 [2023-11-12 00:59:39,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:59:39,298 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 7 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:59:39,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 101 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 00:59:39,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-12 00:59:39,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-12 00:59:39,299 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) [2023-11-12 00:59:39,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-12 00:59:39,300 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 157 [2023-11-12 00:59:39,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:59:39,300 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-12 00:59:39,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) 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) [2023-11-12 00:59:39,300 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-12 00:59:39,300 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-12 00:59:39,303 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-12 00:59:39,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f74263-87de-47b7-b740-8fe52f36914a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-12 00:59:39,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f74263-87de-47b7-b740-8fe52f36914a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-12 00:59:39,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-12 00:59:39,856 INFO L899 garLoopResultBuilder]: For program point L102(lines 102 400) no Hoare annotation was computed. [2023-11-12 00:59:39,856 INFO L899 garLoopResultBuilder]: For program point L598(line 598) no Hoare annotation was computed. [2023-11-12 00:59:39,856 INFO L899 garLoopResultBuilder]: For program point L334(lines 334 400) no Hoare annotation was computed. [2023-11-12 00:59:39,856 INFO L899 garLoopResultBuilder]: For program point L302(lines 302 400) no Hoare annotation was computed. [2023-11-12 00:59:39,857 INFO L899 garLoopResultBuilder]: For program point L170(lines 170 400) no Hoare annotation was computed. [2023-11-12 00:59:39,857 INFO L899 garLoopResultBuilder]: For program point L204(lines 204 400) no Hoare annotation was computed. [2023-11-12 00:59:39,857 INFO L899 garLoopResultBuilder]: For program point L72(lines 72 400) no Hoare annotation was computed. [2023-11-12 00:59:39,857 INFO L899 garLoopResultBuilder]: For program point L271(lines 271 400) no Hoare annotation was computed. [2023-11-12 00:59:39,857 INFO L899 garLoopResultBuilder]: For program point L139(lines 139 400) no Hoare annotation was computed. [2023-11-12 00:59:39,857 INFO L899 garLoopResultBuilder]: For program point L569-1(lines 40 585) no Hoare annotation was computed. [2023-11-12 00:59:39,858 INFO L899 garLoopResultBuilder]: For program point L371(lines 371 400) no Hoare annotation was computed. [2023-11-12 00:59:39,858 INFO L899 garLoopResultBuilder]: For program point L107(lines 107 400) no Hoare annotation was computed. [2023-11-12 00:59:39,858 INFO L899 garLoopResultBuilder]: For program point L41(lines 41 400) no Hoare annotation was computed. [2023-11-12 00:59:39,858 INFO L899 garLoopResultBuilder]: For program point L339(lines 339 400) no Hoare annotation was computed. [2023-11-12 00:59:39,858 INFO L899 garLoopResultBuilder]: For program point L207(lines 207 400) no Hoare annotation was computed. [2023-11-12 00:59:39,858 INFO L899 garLoopResultBuilder]: For program point L75(lines 75 400) no Hoare annotation was computed. [2023-11-12 00:59:39,859 INFO L899 garLoopResultBuilder]: For program point L373(lines 373 400) no Hoare annotation was computed. [2023-11-12 00:59:39,859 INFO L899 garLoopResultBuilder]: For program point L241(lines 241 400) no Hoare annotation was computed. [2023-11-12 00:59:39,859 INFO L899 garLoopResultBuilder]: For program point L175(lines 175 400) no Hoare annotation was computed. [2023-11-12 00:59:39,859 INFO L899 garLoopResultBuilder]: For program point L572-1(lines 40 585) no Hoare annotation was computed. [2023-11-12 00:59:39,859 INFO L899 garLoopResultBuilder]: For program point L275(lines 275 400) no Hoare annotation was computed. [2023-11-12 00:59:39,859 INFO L899 garLoopResultBuilder]: For program point L573(line 573) no Hoare annotation was computed. [2023-11-12 00:59:39,859 INFO L899 garLoopResultBuilder]: For program point L375(lines 375 400) no Hoare annotation was computed. [2023-11-12 00:59:39,860 INFO L899 garLoopResultBuilder]: For program point L309(lines 309 400) no Hoare annotation was computed. [2023-11-12 00:59:39,860 INFO L899 garLoopResultBuilder]: For program point L45(lines 45 400) no Hoare annotation was computed. [2023-11-12 00:59:39,860 INFO L899 garLoopResultBuilder]: For program point L343(lines 343 400) no Hoare annotation was computed. [2023-11-12 00:59:39,861 INFO L899 garLoopResultBuilder]: For program point L112(lines 112 400) no Hoare annotation was computed. [2023-11-12 00:59:39,861 INFO L899 garLoopResultBuilder]: For program point L278(lines 278 400) no Hoare annotation was computed. [2023-11-12 00:59:39,861 INFO L899 garLoopResultBuilder]: For program point L146(lines 146 400) no Hoare annotation was computed. [2023-11-12 00:59:39,861 INFO L899 garLoopResultBuilder]: For program point L213(lines 213 400) no Hoare annotation was computed. [2023-11-12 00:59:39,862 INFO L899 garLoopResultBuilder]: For program point L82(lines 82 400) no Hoare annotation was computed. [2023-11-12 00:59:39,864 INFO L899 garLoopResultBuilder]: For program point L347(lines 347 400) no Hoare annotation was computed. [2023-11-12 00:59:39,864 INFO L899 garLoopResultBuilder]: For program point L248(lines 248 400) no Hoare annotation was computed. [2023-11-12 00:59:39,864 INFO L899 garLoopResultBuilder]: For program point L183(lines 183 400) no Hoare annotation was computed. [2023-11-12 00:59:39,864 INFO L899 garLoopResultBuilder]: For program point L150(lines 150 400) no Hoare annotation was computed. [2023-11-12 00:59:39,864 INFO L899 garLoopResultBuilder]: For program point L382(lines 382 400) no Hoare annotation was computed. [2023-11-12 00:59:39,864 INFO L899 garLoopResultBuilder]: For program point L316(lines 316 400) no Hoare annotation was computed. [2023-11-12 00:59:39,865 INFO L899 garLoopResultBuilder]: For program point L283(lines 283 400) no Hoare annotation was computed. [2023-11-12 00:59:39,865 INFO L899 garLoopResultBuilder]: For program point L118(lines 118 400) no Hoare annotation was computed. [2023-11-12 00:59:39,865 INFO L899 garLoopResultBuilder]: For program point L218(lines 218 400) no Hoare annotation was computed. [2023-11-12 00:59:39,865 INFO L899 garLoopResultBuilder]: For program point L53(lines 53 400) no Hoare annotation was computed. [2023-11-12 00:59:39,865 INFO L899 garLoopResultBuilder]: For program point L154(lines 154 400) no Hoare annotation was computed. [2023-11-12 00:59:39,865 INFO L899 garLoopResultBuilder]: For program point L188(lines 188 400) no Hoare annotation was computed. [2023-11-12 00:59:39,866 INFO L899 garLoopResultBuilder]: For program point L387(lines 387 400) no Hoare annotation was computed. [2023-11-12 00:59:39,866 INFO L899 garLoopResultBuilder]: For program point L288(lines 288 400) no Hoare annotation was computed. [2023-11-12 00:59:39,866 INFO L899 garLoopResultBuilder]: For program point L255(lines 255 400) no Hoare annotation was computed. [2023-11-12 00:59:39,866 INFO L899 garLoopResultBuilder]: For program point L90(lines 90 400) no Hoare annotation was computed. [2023-11-12 00:59:39,866 INFO L899 garLoopResultBuilder]: For program point L355(lines 355 400) no Hoare annotation was computed. [2023-11-12 00:59:39,866 INFO L899 garLoopResultBuilder]: For program point L322(lines 322 400) no Hoare annotation was computed. [2023-11-12 00:59:39,866 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-12 00:59:39,867 INFO L899 garLoopResultBuilder]: For program point L124(lines 124 400) no Hoare annotation was computed. [2023-11-12 00:59:39,867 INFO L899 garLoopResultBuilder]: For program point L587(lines 587 604) no Hoare annotation was computed. [2023-11-12 00:59:39,867 INFO L899 garLoopResultBuilder]: For program point L224(lines 224 400) no Hoare annotation was computed. [2023-11-12 00:59:39,867 INFO L899 garLoopResultBuilder]: For program point L158(lines 158 400) no Hoare annotation was computed. [2023-11-12 00:59:39,867 INFO L899 garLoopResultBuilder]: For program point L59(lines 59 400) no Hoare annotation was computed. [2023-11-12 00:59:39,868 INFO L899 garLoopResultBuilder]: For program point L94(lines 94 400) no Hoare annotation was computed. [2023-11-12 00:59:39,868 INFO L899 garLoopResultBuilder]: For program point L392(lines 392 400) no Hoare annotation was computed. [2023-11-12 00:59:39,868 INFO L899 garLoopResultBuilder]: For program point L326(lines 326 400) no Hoare annotation was computed. [2023-11-12 00:59:39,869 INFO L899 garLoopResultBuilder]: For program point L260(lines 260 400) no Hoare annotation was computed. [2023-11-12 00:59:39,869 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-12 00:59:39,869 INFO L899 garLoopResultBuilder]: For program point L228(lines 228 400) no Hoare annotation was computed. [2023-11-12 00:59:39,869 INFO L899 garLoopResultBuilder]: For program point L162(lines 162 400) no Hoare annotation was computed. [2023-11-12 00:59:39,869 INFO L899 garLoopResultBuilder]: For program point L129(lines 129 400) no Hoare annotation was computed. [2023-11-12 00:59:39,869 INFO L899 garLoopResultBuilder]: For program point L328(lines 328 400) no Hoare annotation was computed. [2023-11-12 00:59:39,869 INFO L899 garLoopResultBuilder]: For program point L196(lines 196 400) no Hoare annotation was computed. [2023-11-12 00:59:39,870 INFO L899 garLoopResultBuilder]: For program point L64(lines 64 400) no Hoare annotation was computed. [2023-11-12 00:59:39,874 INFO L895 garLoopResultBuilder]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse1 (<= ~a21~0 0)) (.cse0 (<= ~a8~0 13)) (.cse2 (<= ~a16~0 5)) (.cse6 (<= ~a20~0 0)) (.cse7 (= ~a16~0 6)) (.cse9 (<= 14 ~a8~0)) (.cse3 (<= ~a7~0 0)) (.cse4 (= ~a21~0 1)) (.cse8 (= ~a17~0 1)) (.cse5 (= ~a20~0 1))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse4 .cse2 .cse5) (and .cse6 .cse4 .cse2) (and .cse0 .cse7 .cse1) (and .cse0 .cse4 .cse8 .cse5) (and .cse9 .cse4 .cse2 .cse5) (and .cse7 .cse9 .cse4 .cse5) (and .cse6 .cse7 .cse9 .cse4) (and .cse3 .cse4 .cse8 .cse5))) [2023-11-12 00:59:39,875 INFO L899 garLoopResultBuilder]: For program point L296(lines 296 400) no Hoare annotation was computed. [2023-11-12 00:59:39,875 INFO L899 garLoopResultBuilder]: For program point calculate_output_returnLabel#1(lines 40 585) no Hoare annotation was computed. [2023-11-12 00:59:39,875 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 573) no Hoare annotation was computed. [2023-11-12 00:59:39,875 INFO L899 garLoopResultBuilder]: For program point L363(lines 363 400) no Hoare annotation was computed. [2023-11-12 00:59:39,875 INFO L899 garLoopResultBuilder]: For program point L199(lines 199 400) no Hoare annotation was computed. [2023-11-12 00:59:39,875 INFO L899 garLoopResultBuilder]: For program point L365(lines 365 400) no Hoare annotation was computed. [2023-11-12 00:59:39,876 INFO L899 garLoopResultBuilder]: For program point L266(lines 266 400) no Hoare annotation was computed. [2023-11-12 00:59:39,876 INFO L899 garLoopResultBuilder]: For program point L233(lines 233 400) no Hoare annotation was computed. [2023-11-12 00:59:39,876 INFO L899 garLoopResultBuilder]: For program point L134(lines 134 400) no Hoare annotation was computed. [2023-11-12 00:59:39,879 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:59:39,883 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 00:59:39,917 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 12:59:39 BoogieIcfgContainer [2023-11-12 00:59:39,917 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 00:59:39,918 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 00:59:39,918 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 00:59:39,918 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 00:59:39,919 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:59:27" (3/4) ... [2023-11-12 00:59:39,921 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-12 00:59:39,952 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 110 nodes and edges [2023-11-12 00:59:39,953 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2023-11-12 00:59:39,955 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2023-11-12 00:59:39,957 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-12 00:59:40,174 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f74263-87de-47b7-b740-8fe52f36914a/bin/utaipan-verify-NcY6lQBIFX/witness.graphml [2023-11-12 00:59:40,175 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f74263-87de-47b7-b740-8fe52f36914a/bin/utaipan-verify-NcY6lQBIFX/witness.yml [2023-11-12 00:59:40,175 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 00:59:40,176 INFO L158 Benchmark]: Toolchain (without parser) took 15340.14ms. Allocated memory was 159.4MB in the beginning and 312.5MB in the end (delta: 153.1MB). Free memory was 120.6MB in the beginning and 167.9MB in the end (delta: -47.2MB). Peak memory consumption was 107.1MB. Max. memory is 16.1GB. [2023-11-12 00:59:40,176 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 159.4MB. Free memory is still 132.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:59:40,176 INFO L158 Benchmark]: CACSL2BoogieTranslator took 724.73ms. Allocated memory is still 159.4MB. Free memory was 120.0MB in the beginning and 91.3MB in the end (delta: 28.7MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2023-11-12 00:59:40,177 INFO L158 Benchmark]: Boogie Procedure Inliner took 113.13ms. Allocated memory is still 159.4MB. Free memory was 91.3MB in the beginning and 85.6MB in the end (delta: 5.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-12 00:59:40,178 INFO L158 Benchmark]: Boogie Preprocessor took 110.52ms. Allocated memory is still 159.4MB. Free memory was 85.6MB in the beginning and 81.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-12 00:59:40,178 INFO L158 Benchmark]: RCFGBuilder took 1592.07ms. Allocated memory is still 159.4MB. Free memory was 81.4MB in the beginning and 96.1MB in the end (delta: -14.7MB). Peak memory consumption was 49.8MB. Max. memory is 16.1GB. [2023-11-12 00:59:40,179 INFO L158 Benchmark]: TraceAbstraction took 12534.55ms. Allocated memory was 159.4MB in the beginning and 312.5MB in the end (delta: 153.1MB). Free memory was 95.1MB in the beginning and 181.5MB in the end (delta: -86.4MB). Peak memory consumption was 67.7MB. Max. memory is 16.1GB. [2023-11-12 00:59:40,180 INFO L158 Benchmark]: Witness Printer took 256.87ms. Allocated memory is still 312.5MB. Free memory was 181.5MB in the beginning and 167.9MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-12 00:59:40,187 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 159.4MB. Free memory is still 132.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 724.73ms. Allocated memory is still 159.4MB. Free memory was 120.0MB in the beginning and 91.3MB in the end (delta: 28.7MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 113.13ms. Allocated memory is still 159.4MB. Free memory was 91.3MB in the beginning and 85.6MB in the end (delta: 5.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 110.52ms. Allocated memory is still 159.4MB. Free memory was 85.6MB in the beginning and 81.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1592.07ms. Allocated memory is still 159.4MB. Free memory was 81.4MB in the beginning and 96.1MB in the end (delta: -14.7MB). Peak memory consumption was 49.8MB. Max. memory is 16.1GB. * TraceAbstraction took 12534.55ms. Allocated memory was 159.4MB in the beginning and 312.5MB in the end (delta: 153.1MB). Free memory was 95.1MB in the beginning and 181.5MB in the end (delta: -86.4MB). Peak memory consumption was 67.7MB. Max. memory is 16.1GB. * Witness Printer took 256.87ms. Allocated memory is still 312.5MB. Free memory was 181.5MB in the beginning and 167.9MB 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: 573]: 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: 12.4s, OverallIterations: 13, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 5.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 666 SdHoareTripleChecker+Valid, 4.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 666 mSDsluCounter, 790 SdHoareTripleChecker+Invalid, 3.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 52 mSDsCounter, 597 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2807 IncrementalHoareTripleChecker+Invalid, 3404 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 597 mSolverCounterUnsat, 738 mSDtfsCounter, 2807 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 609 GetRequests, 584 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1565occurred in iteration=10, InterpolantAutomatonStates: 40, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 13 MinimizatonAttempts, 781 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 18 NumberOfFragments, 109 HoareAnnotationTreeSize, 1 FomulaSimplifications, 262 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 1 FomulaSimplificationsInter, 375 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 2012 NumberOfCodeBlocks, 2012 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 1995 ConstructedInterpolants, 0 QuantifiedInterpolants, 6696 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1459 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 17 InterpolantComputations, 13 PerfectInterpolantSequences, 1058/1125 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 <= 13) && (a21 <= 0)) && (a16 <= 5)) || ((((a7 <= 0) && (a21 == 1)) && (a16 <= 5)) && (a20 == 1))) || (((a20 <= 0) && (a21 == 1)) && (a16 <= 5))) || (((a8 <= 13) && (a16 == 6)) && (a21 <= 0))) || ((((a8 <= 13) && (a21 == 1)) && (a17 == 1)) && (a20 == 1))) || ((((14 <= a8) && (a21 == 1)) && (a16 <= 5)) && (a20 == 1))) || ((((a16 == 6) && (14 <= a8)) && (a21 == 1)) && (a20 == 1))) || ((((a20 <= 0) && (a16 == 6)) && (14 <= a8)) && (a21 == 1))) || ((((a7 <= 0) && (a21 == 1)) && (a17 == 1)) && (a20 == 1))) RESULT: Ultimate proved your program to be correct! [2023-11-12 00:59:40,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f74263-87de-47b7-b740-8fe52f36914a/bin/utaipan-verify-NcY6lQBIFX/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