./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/psyco/psyco_security.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee1cc4fb-c9bb-4798-8ae9-29b851716fa1/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee1cc4fb-c9bb-4798-8ae9-29b851716fa1/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee1cc4fb-c9bb-4798-8ae9-29b851716fa1/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee1cc4fb-c9bb-4798-8ae9-29b851716fa1/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/psyco/psyco_security.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee1cc4fb-c9bb-4798-8ae9-29b851716fa1/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee1cc4fb-c9bb-4798-8ae9-29b851716fa1/bin/utaipan-verify-SwPr7d2a91 --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 c03d27deb00d6c25e1f99c43455f6da27475e88a721be2a7236bfffedf5da1e8 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:20:31,224 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:20:31,340 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee1cc4fb-c9bb-4798-8ae9-29b851716fa1/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-24 23:20:31,348 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:20:31,349 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:20:31,394 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:20:31,395 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:20:31,395 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:20:31,396 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:20:31,404 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:20:31,404 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:20:31,405 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:20:31,405 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:20:31,407 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:20:31,408 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:20:31,408 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:20:31,409 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:20:31,409 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:20:31,412 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:20:31,412 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:20:31,413 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:20:31,414 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:20:31,415 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:20:31,416 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:20:31,416 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:20:31,416 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:20:31,417 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:20:31,417 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:20:31,418 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:20:31,418 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:20:31,420 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:20:31,420 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:20:31,420 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:20:31,420 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:20:31,421 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:20:31,421 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:20:31,421 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:20:31,422 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:20:31,422 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:20:31,423 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:20:31,423 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:20:31,423 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:20:31,424 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:20:31,424 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:20:31,424 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:20:31,425 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:20:31,425 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:20:31,425 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee1cc4fb-c9bb-4798-8ae9-29b851716fa1/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee1cc4fb-c9bb-4798-8ae9-29b851716fa1/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c03d27deb00d6c25e1f99c43455f6da27475e88a721be2a7236bfffedf5da1e8 [2023-11-24 23:20:31,768 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:20:31,805 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:20:31,808 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:20:31,811 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:20:31,812 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:20:31,813 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee1cc4fb-c9bb-4798-8ae9-29b851716fa1/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/psyco/psyco_security.c [2023-11-24 23:20:35,127 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:20:35,360 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:20:35,361 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee1cc4fb-c9bb-4798-8ae9-29b851716fa1/sv-benchmarks/c/psyco/psyco_security.c [2023-11-24 23:20:35,373 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee1cc4fb-c9bb-4798-8ae9-29b851716fa1/bin/utaipan-verify-SwPr7d2a91/data/0aaf6fe15/8c48a3740319420c9e5c6d12be77f47d/FLAGc3f78527f [2023-11-24 23:20:35,389 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee1cc4fb-c9bb-4798-8ae9-29b851716fa1/bin/utaipan-verify-SwPr7d2a91/data/0aaf6fe15/8c48a3740319420c9e5c6d12be77f47d [2023-11-24 23:20:35,392 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:20:35,394 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:20:35,395 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:20:35,396 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:20:35,402 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:20:35,403 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:20:35" (1/1) ... [2023-11-24 23:20:35,404 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@488e9b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:35, skipping insertion in model container [2023-11-24 23:20:35,404 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:20:35" (1/1) ... [2023-11-24 23:20:35,440 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:20:35,631 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_ee1cc4fb-c9bb-4798-8ae9-29b851716fa1/sv-benchmarks/c/psyco/psyco_security.c[12744,12757] [2023-11-24 23:20:35,637 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:20:35,649 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:20:35,682 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_ee1cc4fb-c9bb-4798-8ae9-29b851716fa1/sv-benchmarks/c/psyco/psyco_security.c[12744,12757] [2023-11-24 23:20:35,684 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:20:35,700 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:20:35,700 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:35 WrapperNode [2023-11-24 23:20:35,701 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:20:35,702 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:20:35,702 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:20:35,702 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:20:35,711 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:35" (1/1) ... [2023-11-24 23:20:35,720 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:35" (1/1) ... [2023-11-24 23:20:35,749 INFO L138 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 289 [2023-11-24 23:20:35,749 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:20:35,750 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:20:35,751 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:20:35,751 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:20:35,762 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:35" (1/1) ... [2023-11-24 23:20:35,762 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:35" (1/1) ... [2023-11-24 23:20:35,765 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:35" (1/1) ... [2023-11-24 23:20:35,765 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:35" (1/1) ... [2023-11-24 23:20:35,771 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:35" (1/1) ... [2023-11-24 23:20:35,779 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:35" (1/1) ... [2023-11-24 23:20:35,787 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:35" (1/1) ... [2023-11-24 23:20:35,802 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:35" (1/1) ... [2023-11-24 23:20:35,806 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:20:35,807 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:20:35,807 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:20:35,808 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:20:35,809 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:35" (1/1) ... [2023-11-24 23:20:35,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:20:35,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee1cc4fb-c9bb-4798-8ae9-29b851716fa1/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:20:35,876 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee1cc4fb-c9bb-4798-8ae9-29b851716fa1/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:20:35,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee1cc4fb-c9bb-4798-8ae9-29b851716fa1/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:20:35,931 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:20:35,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:20:35,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:20:35,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:20:36,019 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:20:36,022 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:20:36,488 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:20:36,531 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:20:36,532 INFO L309 CfgBuilder]: Removed 18 assume(true) statements. [2023-11-24 23:20:36,534 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:20:36 BoogieIcfgContainer [2023-11-24 23:20:36,534 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:20:36,539 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:20:36,539 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:20:36,543 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:20:36,543 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:20:35" (1/3) ... [2023-11-24 23:20:36,545 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61049af9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:20:36, skipping insertion in model container [2023-11-24 23:20:36,545 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:35" (2/3) ... [2023-11-24 23:20:36,548 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61049af9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:20:36, skipping insertion in model container [2023-11-24 23:20:36,548 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:20:36" (3/3) ... [2023-11-24 23:20:36,550 INFO L112 eAbstractionObserver]: Analyzing ICFG psyco_security.c [2023-11-24 23:20:36,570 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:20:36,570 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 23:20:36,624 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:20:36,630 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;@77479341, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:20:36,630 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 23:20:36,634 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 74 states have (on average 1.9594594594594594) internal successors, (145), 75 states have internal predecessors, (145), 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) [2023-11-24 23:20:36,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-24 23:20:36,641 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:20:36,642 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:20:36,642 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:20:36,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:20:36,648 INFO L85 PathProgramCache]: Analyzing trace with hash 2012634000, now seen corresponding path program 1 times [2023-11-24 23:20:36,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:20:36,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921956591] [2023-11-24 23:20:36,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:20:36,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:20:36,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:20:36,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:20:36,805 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:20:36,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921956591] [2023-11-24 23:20:36,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921956591] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:20:36,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:20:36,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:20:36,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010484460] [2023-11-24 23:20:36,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:20:36,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 23:20:36,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:20:36,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 23:20:36,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 23:20:36,859 INFO L87 Difference]: Start difference. First operand has 76 states, 74 states have (on average 1.9594594594594594) internal successors, (145), 75 states have internal predecessors, (145), 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 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2023-11-24 23:20:36,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:20:36,922 INFO L93 Difference]: Finished difference Result 151 states and 289 transitions. [2023-11-24 23:20:36,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 23:20:36,925 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2023-11-24 23:20:36,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:20:36,936 INFO L225 Difference]: With dead ends: 151 [2023-11-24 23:20:36,936 INFO L226 Difference]: Without dead ends: 73 [2023-11-24 23:20:36,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 23:20:36,945 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:20:36,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 116 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:20:36,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-11-24 23:20:36,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2023-11-24 23:20:36,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.5) internal successors, (108), 72 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) [2023-11-24 23:20:36,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 108 transitions. [2023-11-24 23:20:36,998 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 108 transitions. Word has length 8 [2023-11-24 23:20:36,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:20:36,999 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 108 transitions. [2023-11-24 23:20:37,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2023-11-24 23:20:37,000 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 108 transitions. [2023-11-24 23:20:37,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-24 23:20:37,001 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:20:37,002 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:20:37,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:20:37,002 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:20:37,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:20:37,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1500363544, now seen corresponding path program 1 times [2023-11-24 23:20:37,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:20:37,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004651339] [2023-11-24 23:20:37,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:20:37,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:20:37,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:20:37,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:20:37,106 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:20:37,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004651339] [2023-11-24 23:20:37,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004651339] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:20:37,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:20:37,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:20:37,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391854566] [2023-11-24 23:20:37,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:20:37,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:20:37,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:20:37,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:20:37,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:20:37,113 INFO L87 Difference]: Start difference. First operand 73 states and 108 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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) [2023-11-24 23:20:37,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:20:37,206 INFO L93 Difference]: Finished difference Result 148 states and 219 transitions. [2023-11-24 23:20:37,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:20:37,207 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2023-11-24 23:20:37,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:20:37,211 INFO L225 Difference]: With dead ends: 148 [2023-11-24 23:20:37,211 INFO L226 Difference]: Without dead ends: 76 [2023-11-24 23:20:37,216 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 [2023-11-24 23:20:37,218 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 4 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:20:37,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 187 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:20:37,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-11-24 23:20:37,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2023-11-24 23:20:37,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.48) internal successors, (111), 75 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) [2023-11-24 23:20:37,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 111 transitions. [2023-11-24 23:20:37,233 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 111 transitions. Word has length 9 [2023-11-24 23:20:37,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:20:37,233 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 111 transitions. [2023-11-24 23:20:37,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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) [2023-11-24 23:20:37,234 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 111 transitions. [2023-11-24 23:20:37,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-24 23:20:37,235 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:20:37,236 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:20:37,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 23:20:37,237 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:20:37,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:20:37,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1719213453, now seen corresponding path program 1 times [2023-11-24 23:20:37,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:20:37,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735857433] [2023-11-24 23:20:37,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:20:37,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:20:37,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:20:37,385 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:20:37,386 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:20:37,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735857433] [2023-11-24 23:20:37,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735857433] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:20:37,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:20:37,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:20:37,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664607907] [2023-11-24 23:20:37,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:20:37,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:20:37,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:20:37,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:20:37,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:20:37,389 INFO L87 Difference]: Start difference. First operand 76 states and 111 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2023-11-24 23:20:37,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:20:37,469 INFO L93 Difference]: Finished difference Result 156 states and 228 transitions. [2023-11-24 23:20:37,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:20:37,470 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 14 [2023-11-24 23:20:37,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:20:37,475 INFO L225 Difference]: With dead ends: 156 [2023-11-24 23:20:37,475 INFO L226 Difference]: Without dead ends: 82 [2023-11-24 23:20:37,481 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 [2023-11-24 23:20:37,487 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 21 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:20:37,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 171 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:20:37,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-11-24 23:20:37,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 80. [2023-11-24 23:20:37,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.4556962025316456) internal successors, (115), 79 states have internal predecessors, (115), 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) [2023-11-24 23:20:37,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 115 transitions. [2023-11-24 23:20:37,504 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 115 transitions. Word has length 14 [2023-11-24 23:20:37,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:20:37,509 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 115 transitions. [2023-11-24 23:20:37,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2023-11-24 23:20:37,509 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 115 transitions. [2023-11-24 23:20:37,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-24 23:20:37,511 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:20:37,511 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:20:37,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 23:20:37,511 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:20:37,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:20:37,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1245574467, now seen corresponding path program 1 times [2023-11-24 23:20:37,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:20:37,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338318538] [2023-11-24 23:20:37,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:20:37,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:20:37,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:20:37,664 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:20:37,664 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:20:37,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338318538] [2023-11-24 23:20:37,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338318538] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:20:37,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:20:37,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:20:37,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476138891] [2023-11-24 23:20:37,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:20:37,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:20:37,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:20:37,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:20:37,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:20:37,669 INFO L87 Difference]: Start difference. First operand 80 states and 115 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2023-11-24 23:20:37,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:20:37,865 INFO L93 Difference]: Finished difference Result 253 states and 361 transitions. [2023-11-24 23:20:37,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:20:37,866 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2023-11-24 23:20:37,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:20:37,870 INFO L225 Difference]: With dead ends: 253 [2023-11-24 23:20:37,870 INFO L226 Difference]: Without dead ends: 163 [2023-11-24 23:20:37,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:20:37,881 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 93 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:20:37,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 344 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:20:37,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2023-11-24 23:20:37,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 128. [2023-11-24 23:20:37,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 1.5196850393700787) internal successors, (193), 127 states have internal predecessors, (193), 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) [2023-11-24 23:20:37,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 193 transitions. [2023-11-24 23:20:37,900 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 193 transitions. Word has length 17 [2023-11-24 23:20:37,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:20:37,901 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 193 transitions. [2023-11-24 23:20:37,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2023-11-24 23:20:37,901 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 193 transitions. [2023-11-24 23:20:37,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-24 23:20:37,903 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:20:37,903 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:20:37,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 23:20:37,904 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:20:37,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:20:37,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1486950486, now seen corresponding path program 1 times [2023-11-24 23:20:37,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:20:37,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551338322] [2023-11-24 23:20:37,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:20:37,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:20:37,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:20:37,982 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:20:37,982 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:20:37,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551338322] [2023-11-24 23:20:37,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551338322] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:20:37,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:20:37,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:20:37,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752190266] [2023-11-24 23:20:37,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:20:37,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:20:37,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:20:37,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:20:37,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:20:37,985 INFO L87 Difference]: Start difference. First operand 128 states and 193 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2023-11-24 23:20:38,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:20:38,029 INFO L93 Difference]: Finished difference Result 232 states and 347 transitions. [2023-11-24 23:20:38,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:20:38,030 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 21 [2023-11-24 23:20:38,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:20:38,032 INFO L225 Difference]: With dead ends: 232 [2023-11-24 23:20:38,032 INFO L226 Difference]: Without dead ends: 106 [2023-11-24 23:20:38,032 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 [2023-11-24 23:20:38,033 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 28 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:20:38,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 149 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:20:38,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-11-24 23:20:38,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 104. [2023-11-24 23:20:38,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.4271844660194175) internal successors, (147), 103 states have internal predecessors, (147), 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) [2023-11-24 23:20:38,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 147 transitions. [2023-11-24 23:20:38,043 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 147 transitions. Word has length 21 [2023-11-24 23:20:38,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:20:38,044 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 147 transitions. [2023-11-24 23:20:38,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2023-11-24 23:20:38,044 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 147 transitions. [2023-11-24 23:20:38,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-24 23:20:38,046 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:20:38,046 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:20:38,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 23:20:38,047 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:20:38,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:20:38,047 INFO L85 PathProgramCache]: Analyzing trace with hash 2107433730, now seen corresponding path program 1 times [2023-11-24 23:20:38,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:20:38,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761457643] [2023-11-24 23:20:38,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:20:38,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:20:38,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:20:38,112 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:20:38,113 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:20:38,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761457643] [2023-11-24 23:20:38,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761457643] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:20:38,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:20:38,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:20:38,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597019029] [2023-11-24 23:20:38,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:20:38,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:20:38,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:20:38,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:20:38,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:20:38,118 INFO L87 Difference]: Start difference. First operand 104 states and 147 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2023-11-24 23:20:38,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:20:38,199 INFO L93 Difference]: Finished difference Result 188 states and 267 transitions. [2023-11-24 23:20:38,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:20:38,204 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 23 [2023-11-24 23:20:38,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:20:38,205 INFO L225 Difference]: With dead ends: 188 [2023-11-24 23:20:38,205 INFO L226 Difference]: Without dead ends: 86 [2023-11-24 23:20:38,206 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 [2023-11-24 23:20:38,207 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 28 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:20:38,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 121 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:20:38,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-11-24 23:20:38,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 84. [2023-11-24 23:20:38,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.4096385542168675) internal successors, (117), 83 states have internal predecessors, (117), 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) [2023-11-24 23:20:38,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 117 transitions. [2023-11-24 23:20:38,228 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 117 transitions. Word has length 23 [2023-11-24 23:20:38,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:20:38,229 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 117 transitions. [2023-11-24 23:20:38,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2023-11-24 23:20:38,230 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 117 transitions. [2023-11-24 23:20:38,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-24 23:20:38,231 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:20:38,231 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:20:38,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-24 23:20:38,231 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:20:38,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:20:38,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1295085716, now seen corresponding path program 1 times [2023-11-24 23:20:38,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:20:38,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399482875] [2023-11-24 23:20:38,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:20:38,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:20:38,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:20:38,315 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:20:38,316 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:20:38,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399482875] [2023-11-24 23:20:38,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399482875] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:20:38,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:20:38,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:20:38,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938315614] [2023-11-24 23:20:38,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:20:38,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:20:38,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:20:38,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:20:38,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:20:38,319 INFO L87 Difference]: Start difference. First operand 84 states and 117 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2023-11-24 23:20:38,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:20:38,358 INFO L93 Difference]: Finished difference Result 131 states and 184 transitions. [2023-11-24 23:20:38,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:20:38,359 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 25 [2023-11-24 23:20:38,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:20:38,360 INFO L225 Difference]: With dead ends: 131 [2023-11-24 23:20:38,360 INFO L226 Difference]: Without dead ends: 65 [2023-11-24 23:20:38,360 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 [2023-11-24 23:20:38,362 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 14 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:20:38,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 111 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:20:38,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-11-24 23:20:38,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2023-11-24 23:20:38,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.296875) internal successors, (83), 64 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) [2023-11-24 23:20:38,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 83 transitions. [2023-11-24 23:20:38,367 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 83 transitions. Word has length 25 [2023-11-24 23:20:38,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:20:38,367 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 83 transitions. [2023-11-24 23:20:38,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2023-11-24 23:20:38,368 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 83 transitions. [2023-11-24 23:20:38,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-24 23:20:38,372 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:20:38,372 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:20:38,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-24 23:20:38,373 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:20:38,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:20:38,373 INFO L85 PathProgramCache]: Analyzing trace with hash -683874930, now seen corresponding path program 1 times [2023-11-24 23:20:38,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:20:38,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317965881] [2023-11-24 23:20:38,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:20:38,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:20:38,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:20:38,415 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:20:38,416 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:20:38,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317965881] [2023-11-24 23:20:38,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317965881] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:20:38,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:20:38,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:20:38,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642309906] [2023-11-24 23:20:38,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:20:38,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:20:38,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:20:38,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:20:38,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:20:38,418 INFO L87 Difference]: Start difference. First operand 65 states and 83 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2023-11-24 23:20:38,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:20:38,440 INFO L93 Difference]: Finished difference Result 106 states and 138 transitions. [2023-11-24 23:20:38,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:20:38,441 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 28 [2023-11-24 23:20:38,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:20:38,441 INFO L225 Difference]: With dead ends: 106 [2023-11-24 23:20:38,441 INFO L226 Difference]: Without dead ends: 0 [2023-11-24 23:20:38,442 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 [2023-11-24 23:20:38,442 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 13 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:20:38,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 101 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:20:38,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-24 23:20:38,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-24 23:20:38,444 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) [2023-11-24 23:20:38,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-24 23:20:38,444 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2023-11-24 23:20:38,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:20:38,445 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-24 23:20:38,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2023-11-24 23:20:38,445 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-24 23:20:38,445 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-24 23:20:38,448 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-24 23:20:38,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-24 23:20:38,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-24 23:20:38,471 INFO L899 garLoopResultBuilder]: For program point L250(lines 250 265) no Hoare annotation was computed. [2023-11-24 23:20:38,471 INFO L899 garLoopResultBuilder]: For program point L118(lines 118 133) no Hoare annotation was computed. [2023-11-24 23:20:38,471 INFO L899 garLoopResultBuilder]: For program point L52(lines 52 63) no Hoare annotation was computed. [2023-11-24 23:20:38,471 INFO L899 garLoopResultBuilder]: For program point L366(lines 366 381) no Hoare annotation was computed. [2023-11-24 23:20:38,472 INFO L899 garLoopResultBuilder]: For program point L234(lines 234 249) no Hoare annotation was computed. [2023-11-24 23:20:38,472 INFO L899 garLoopResultBuilder]: For program point L168(lines 168 179) no Hoare annotation was computed. [2023-11-24 23:20:38,472 INFO L899 garLoopResultBuilder]: For program point L102(lines 102 117) no Hoare annotation was computed. [2023-11-24 23:20:38,472 INFO L899 garLoopResultBuilder]: For program point L36(lines 36 38) no Hoare annotation was computed. [2023-11-24 23:20:38,472 INFO L899 garLoopResultBuilder]: For program point L350(lines 350 365) no Hoare annotation was computed. [2023-11-24 23:20:38,472 INFO L899 garLoopResultBuilder]: For program point L218(lines 218 233) no Hoare annotation was computed. [2023-11-24 23:20:38,473 INFO L899 garLoopResultBuilder]: For program point L185(lines 185 284) no Hoare annotation was computed. [2023-11-24 23:20:38,473 INFO L899 garLoopResultBuilder]: For program point L152(lines 152 163) no Hoare annotation was computed. [2023-11-24 23:20:38,473 INFO L899 garLoopResultBuilder]: For program point L334(lines 334 349) no Hoare annotation was computed. [2023-11-24 23:20:38,473 INFO L899 garLoopResultBuilder]: For program point L268(lines 268 279) no Hoare annotation was computed. [2023-11-24 23:20:38,473 INFO L899 garLoopResultBuilder]: For program point L202(lines 202 217) no Hoare annotation was computed. [2023-11-24 23:20:38,473 INFO L899 garLoopResultBuilder]: For program point L136(lines 136 147) no Hoare annotation was computed. [2023-11-24 23:20:38,474 INFO L899 garLoopResultBuilder]: For program point L318(lines 318 333) no Hoare annotation was computed. [2023-11-24 23:20:38,474 INFO L899 garLoopResultBuilder]: For program point L285(lines 285 384) no Hoare annotation was computed. [2023-11-24 23:20:38,474 INFO L899 garLoopResultBuilder]: For program point L252(lines 252 263) no Hoare annotation was computed. [2023-11-24 23:20:38,474 INFO L899 garLoopResultBuilder]: For program point L186(lines 186 201) no Hoare annotation was computed. [2023-11-24 23:20:38,474 INFO L899 garLoopResultBuilder]: For program point L120(lines 120 131) no Hoare annotation was computed. [2023-11-24 23:20:38,474 INFO L899 garLoopResultBuilder]: For program point L368(lines 368 379) no Hoare annotation was computed. [2023-11-24 23:20:38,475 INFO L899 garLoopResultBuilder]: For program point L302(lines 302 317) no Hoare annotation was computed. [2023-11-24 23:20:38,475 INFO L899 garLoopResultBuilder]: For program point L368-2(lines 24 387) no Hoare annotation was computed. [2023-11-24 23:20:38,475 INFO L899 garLoopResultBuilder]: For program point L236(lines 236 247) no Hoare annotation was computed. [2023-11-24 23:20:38,475 INFO L899 garLoopResultBuilder]: For program point L104(lines 104 115) no Hoare annotation was computed. [2023-11-24 23:20:38,475 INFO L899 garLoopResultBuilder]: For program point L352(lines 352 363) no Hoare annotation was computed. [2023-11-24 23:20:38,475 INFO L899 garLoopResultBuilder]: For program point L286(lines 286 301) no Hoare annotation was computed. [2023-11-24 23:20:38,476 INFO L899 garLoopResultBuilder]: For program point L220(lines 220 231) no Hoare annotation was computed. [2023-11-24 23:20:38,479 INFO L899 garLoopResultBuilder]: For program point L88(lines 88 90) no Hoare annotation was computed. [2023-11-24 23:20:38,479 INFO L899 garLoopResultBuilder]: For program point L336(lines 336 347) no Hoare annotation was computed. [2023-11-24 23:20:38,479 INFO L899 garLoopResultBuilder]: For program point L204(lines 204 215) no Hoare annotation was computed. [2023-11-24 23:20:38,480 INFO L899 garLoopResultBuilder]: For program point L72(lines 72 74) no Hoare annotation was computed. [2023-11-24 23:20:38,480 INFO L899 garLoopResultBuilder]: For program point L320(lines 320 331) no Hoare annotation was computed. [2023-11-24 23:20:38,480 INFO L899 garLoopResultBuilder]: For program point L188(lines 188 199) no Hoare annotation was computed. [2023-11-24 23:20:38,480 INFO L899 garLoopResultBuilder]: For program point L56(lines 56 58) no Hoare annotation was computed. [2023-11-24 23:20:38,480 INFO L899 garLoopResultBuilder]: For program point L304(lines 304 315) no Hoare annotation was computed. [2023-11-24 23:20:38,480 INFO L899 garLoopResultBuilder]: For program point L172(lines 172 174) no Hoare annotation was computed. [2023-11-24 23:20:38,480 INFO L899 garLoopResultBuilder]: For program point L288(lines 288 299) no Hoare annotation was computed. [2023-11-24 23:20:38,480 INFO L899 garLoopResultBuilder]: For program point L156(lines 156 158) no Hoare annotation was computed. [2023-11-24 23:20:38,481 INFO L895 garLoopResultBuilder]: At program point L24-2(lines 24 387) the Hoare annotation is: (or (and (= |ULTIMATE.start_main_~this_state~0#1| 3) (<= 4 |ULTIMATE.start_main_~q~0#1|)) (and (= |ULTIMATE.start_main_~q~0#1| 0) (not (= |ULTIMATE.start_main_~this_state~0#1| 2)))) [2023-11-24 23:20:38,481 INFO L899 garLoopResultBuilder]: For program point L24-3(lines 24 387) no Hoare annotation was computed. [2023-11-24 23:20:38,481 INFO L899 garLoopResultBuilder]: For program point L272(lines 272 274) no Hoare annotation was computed. [2023-11-24 23:20:38,482 INFO L899 garLoopResultBuilder]: For program point L140(lines 140 142) no Hoare annotation was computed. [2023-11-24 23:20:38,482 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-24 23:20:38,482 INFO L899 garLoopResultBuilder]: For program point L256(lines 256 258) no Hoare annotation was computed. [2023-11-24 23:20:38,482 INFO L899 garLoopResultBuilder]: For program point L124(lines 124 126) no Hoare annotation was computed. [2023-11-24 23:20:38,482 INFO L899 garLoopResultBuilder]: For program point L372(lines 372 374) no Hoare annotation was computed. [2023-11-24 23:20:38,482 INFO L899 garLoopResultBuilder]: For program point L240(lines 240 242) no Hoare annotation was computed. [2023-11-24 23:20:38,483 INFO L899 garLoopResultBuilder]: For program point L108(lines 108 110) no Hoare annotation was computed. [2023-11-24 23:20:38,483 INFO L899 garLoopResultBuilder]: For program point L356(lines 356 358) no Hoare annotation was computed. [2023-11-24 23:20:38,483 INFO L899 garLoopResultBuilder]: For program point L224(lines 224 226) no Hoare annotation was computed. [2023-11-24 23:20:38,483 INFO L899 garLoopResultBuilder]: For program point L340(lines 340 342) no Hoare annotation was computed. [2023-11-24 23:20:38,483 INFO L899 garLoopResultBuilder]: For program point L208(lines 208 210) no Hoare annotation was computed. [2023-11-24 23:20:38,483 INFO L899 garLoopResultBuilder]: For program point L324(lines 324 326) no Hoare annotation was computed. [2023-11-24 23:20:38,484 INFO L899 garLoopResultBuilder]: For program point L192(lines 192 194) no Hoare annotation was computed. [2023-11-24 23:20:38,484 INFO L899 garLoopResultBuilder]: For program point L308(lines 308 310) no Hoare annotation was computed. [2023-11-24 23:20:38,484 INFO L899 garLoopResultBuilder]: For program point L292(lines 292 294) no Hoare annotation was computed. [2023-11-24 23:20:38,484 INFO L899 garLoopResultBuilder]: For program point L29(lines 29 48) no Hoare annotation was computed. [2023-11-24 23:20:38,484 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-24 23:20:38,484 INFO L899 garLoopResultBuilder]: For program point L30(lines 30 45) no Hoare annotation was computed. [2023-11-24 23:20:38,485 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 392) no Hoare annotation was computed. [2023-11-24 23:20:38,485 INFO L899 garLoopResultBuilder]: For program point L32(lines 32 43) no Hoare annotation was computed. [2023-11-24 23:20:38,485 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 391) no Hoare annotation was computed. [2023-11-24 23:20:38,485 INFO L899 garLoopResultBuilder]: For program point L82(lines 82 97) no Hoare annotation was computed. [2023-11-24 23:20:38,485 INFO L899 garLoopResultBuilder]: For program point L49(lines 49 100) no Hoare annotation was computed. [2023-11-24 23:20:38,485 INFO L899 garLoopResultBuilder]: For program point L66(lines 66 81) no Hoare annotation was computed. [2023-11-24 23:20:38,486 INFO L899 garLoopResultBuilder]: For program point L50(lines 50 65) no Hoare annotation was computed. [2023-11-24 23:20:38,486 INFO L899 garLoopResultBuilder]: For program point L166(lines 166 181) no Hoare annotation was computed. [2023-11-24 23:20:38,486 INFO L899 garLoopResultBuilder]: For program point main_ERROR#1(lines 15 392) no Hoare annotation was computed. [2023-11-24 23:20:38,486 INFO L899 garLoopResultBuilder]: For program point L150(lines 150 165) no Hoare annotation was computed. [2023-11-24 23:20:38,486 INFO L899 garLoopResultBuilder]: For program point L84(lines 84 95) no Hoare annotation was computed. [2023-11-24 23:20:38,486 INFO L899 garLoopResultBuilder]: For program point L266(lines 266 281) no Hoare annotation was computed. [2023-11-24 23:20:38,487 INFO L899 garLoopResultBuilder]: For program point L134(lines 134 149) no Hoare annotation was computed. [2023-11-24 23:20:38,487 INFO L899 garLoopResultBuilder]: For program point L101(lines 101 184) no Hoare annotation was computed. [2023-11-24 23:20:38,487 INFO L899 garLoopResultBuilder]: For program point L68(lines 68 79) no Hoare annotation was computed. [2023-11-24 23:20:38,490 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:20:38,492 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-24 23:20:38,503 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 11:20:38 BoogieIcfgContainer [2023-11-24 23:20:38,504 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-24 23:20:38,504 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 23:20:38,504 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 23:20:38,505 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 23:20:38,505 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:20:36" (3/4) ... [2023-11-24 23:20:38,507 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-24 23:20:38,518 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2023-11-24 23:20:38,518 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-24 23:20:38,519 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-24 23:20:38,520 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-24 23:20:38,636 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee1cc4fb-c9bb-4798-8ae9-29b851716fa1/bin/utaipan-verify-SwPr7d2a91/witness.graphml [2023-11-24 23:20:38,636 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee1cc4fb-c9bb-4798-8ae9-29b851716fa1/bin/utaipan-verify-SwPr7d2a91/witness.yml [2023-11-24 23:20:38,636 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 23:20:38,637 INFO L158 Benchmark]: Toolchain (without parser) took 3243.64ms. Allocated memory is still 172.0MB. Free memory was 128.4MB in the beginning and 109.2MB in the end (delta: 19.2MB). Peak memory consumption was 21.2MB. Max. memory is 16.1GB. [2023-11-24 23:20:38,637 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 119.5MB. Free memory was 86.7MB in the beginning and 86.7MB in the end (delta: 30.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:20:38,638 INFO L158 Benchmark]: CACSL2BoogieTranslator took 305.68ms. Allocated memory is still 172.0MB. Free memory was 127.8MB in the beginning and 115.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-24 23:20:38,638 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.89ms. Allocated memory is still 172.0MB. Free memory was 115.2MB in the beginning and 113.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 23:20:38,639 INFO L158 Benchmark]: Boogie Preprocessor took 56.03ms. Allocated memory is still 172.0MB. Free memory was 113.1MB in the beginning and 111.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:20:38,639 INFO L158 Benchmark]: RCFGBuilder took 727.31ms. Allocated memory is still 172.0MB. Free memory was 111.7MB in the beginning and 136.6MB in the end (delta: -24.9MB). Peak memory consumption was 18.1MB. Max. memory is 16.1GB. [2023-11-24 23:20:38,639 INFO L158 Benchmark]: TraceAbstraction took 1965.07ms. Allocated memory is still 172.0MB. Free memory was 136.6MB in the beginning and 116.5MB in the end (delta: 20.0MB). Peak memory consumption was 22.0MB. Max. memory is 16.1GB. [2023-11-24 23:20:38,640 INFO L158 Benchmark]: Witness Printer took 132.26ms. Allocated memory is still 172.0MB. Free memory was 116.5MB in the beginning and 109.2MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-24 23:20:38,642 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 119.5MB. Free memory was 86.7MB in the beginning and 86.7MB in the end (delta: 30.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 305.68ms. Allocated memory is still 172.0MB. Free memory was 127.8MB in the beginning and 115.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.89ms. Allocated memory is still 172.0MB. Free memory was 115.2MB in the beginning and 113.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.03ms. Allocated memory is still 172.0MB. Free memory was 113.1MB in the beginning and 111.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 727.31ms. Allocated memory is still 172.0MB. Free memory was 111.7MB in the beginning and 136.6MB in the end (delta: -24.9MB). Peak memory consumption was 18.1MB. Max. memory is 16.1GB. * TraceAbstraction took 1965.07ms. Allocated memory is still 172.0MB. Free memory was 136.6MB in the beginning and 116.5MB in the end (delta: 20.0MB). Peak memory consumption was 22.0MB. Max. memory is 16.1GB. * Witness Printer took 132.26ms. Allocated memory is still 172.0MB. Free memory was 116.5MB in the beginning and 109.2MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. 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: 391]: 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: 1.9s, OverallIterations: 8, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 201 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 201 mSDsluCounter, 1300 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 499 mSDsCounter, 59 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 252 IncrementalHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 59 mSolverCounterUnsat, 801 mSDtfsCounter, 252 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=128occurred in iteration=4, InterpolantAutomatonStates: 24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 41 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 3 NumberOfFragments, 16 HoareAnnotationTreeSize, 1 FomulaSimplifications, 4 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 145 NumberOfCodeBlocks, 145 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 137 ConstructedInterpolants, 0 QuantifiedInterpolants, 238 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 34/34 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: 24]: Loop Invariant Derived loop invariant: (((this_state == 3) && (4 <= q)) || ((q == 0) && !((this_state == 2)))) RESULT: Ultimate proved your program to be correct! [2023-11-24 23:20:38,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee1cc4fb-c9bb-4798-8ae9-29b851716fa1/bin/utaipan-verify-SwPr7d2a91/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