./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label51.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dc25c58-3619-4252-9b23-6e13eda9eb6f/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dc25c58-3619-4252-9b23-6e13eda9eb6f/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dc25c58-3619-4252-9b23-6e13eda9eb6f/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dc25c58-3619-4252-9b23-6e13eda9eb6f/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label51.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dc25c58-3619-4252-9b23-6e13eda9eb6f/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dc25c58-3619-4252-9b23-6e13eda9eb6f/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --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 39ef6d062a4ff56ba1e3913ade729d3f60e638b9dea34b0ea6935ef8cddd75d2 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 08:20:44,504 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 08:20:44,506 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 08:20:44,521 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 08:20:44,521 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 08:20:44,522 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 08:20:44,523 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 08:20:44,524 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 08:20:44,525 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 08:20:44,526 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 08:20:44,526 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 08:20:44,527 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 08:20:44,527 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 08:20:44,528 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 08:20:44,529 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 08:20:44,529 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 08:20:44,530 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 08:20:44,530 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 08:20:44,531 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 08:20:44,533 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 08:20:44,533 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 08:20:44,534 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 08:20:44,535 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 08:20:44,535 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 08:20:44,537 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 08:20:44,538 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 08:20:44,538 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 08:20:44,538 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 08:20:44,539 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 08:20:44,539 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 08:20:44,540 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 08:20:44,540 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 08:20:44,541 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 08:20:44,541 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 08:20:44,542 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 08:20:44,542 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 08:20:44,542 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 08:20:44,543 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 08:20:44,543 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 08:20:44,543 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 08:20:44,544 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 08:20:44,544 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dc25c58-3619-4252-9b23-6e13eda9eb6f/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 08:20:44,558 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 08:20:44,558 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 08:20:44,559 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 08:20:44,559 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 08:20:44,559 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 08:20:44,559 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 08:20:44,559 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 08:20:44,560 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 08:20:44,560 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 08:20:44,560 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 08:20:44,560 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 08:20:44,560 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 08:20:44,560 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 08:20:44,560 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 08:20:44,560 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 08:20:44,561 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 08:20:44,561 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 08:20:44,561 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 08:20:44,561 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 08:20:44,562 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 08:20:44,562 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 08:20:44,562 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 08:20:44,562 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 08:20:44,562 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 08:20:44,562 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 08:20:44,562 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 08:20:44,562 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 08:20:44,563 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 08:20:44,563 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 08:20:44,563 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 08:20:44,563 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 08:20:44,563 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 08:20:44,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:20:44,563 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 08:20:44,563 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 08:20:44,564 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 08:20:44,564 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 08:20:44,564 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 08:20:44,564 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 08:20:44,564 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 08:20:44,564 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 08:20:44,564 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_8dc25c58-3619-4252-9b23-6e13eda9eb6f/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dc25c58-3619-4252-9b23-6e13eda9eb6f/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39ef6d062a4ff56ba1e3913ade729d3f60e638b9dea34b0ea6935ef8cddd75d2 [2022-12-14 08:20:44,730 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 08:20:44,748 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 08:20:44,750 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 08:20:44,751 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 08:20:44,752 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 08:20:44,752 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dc25c58-3619-4252-9b23-6e13eda9eb6f/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/eca-rers2012/Problem01_label51.c [2022-12-14 08:20:47,413 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 08:20:47,589 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 08:20:47,589 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dc25c58-3619-4252-9b23-6e13eda9eb6f/sv-benchmarks/c/eca-rers2012/Problem01_label51.c [2022-12-14 08:20:47,598 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dc25c58-3619-4252-9b23-6e13eda9eb6f/bin/utaipan-gh47qXpMRh/data/f58221fe0/53ee5877970547d3a42ac40dc5b172d1/FLAGbe2b5720f [2022-12-14 08:20:47,609 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dc25c58-3619-4252-9b23-6e13eda9eb6f/bin/utaipan-gh47qXpMRh/data/f58221fe0/53ee5877970547d3a42ac40dc5b172d1 [2022-12-14 08:20:47,610 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 08:20:47,611 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 08:20:47,612 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 08:20:47,612 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 08:20:47,615 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 08:20:47,616 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:20:47" (1/1) ... [2022-12-14 08:20:47,616 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bfadcb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:20:47, skipping insertion in model container [2022-12-14 08:20:47,617 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:20:47" (1/1) ... [2022-12-14 08:20:47,622 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 08:20:47,649 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 08:20:47,850 WARN L237 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_8dc25c58-3619-4252-9b23-6e13eda9eb6f/sv-benchmarks/c/eca-rers2012/Problem01_label51.c[18730,18743] [2022-12-14 08:20:47,870 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:20:47,878 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 08:20:47,944 WARN L237 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_8dc25c58-3619-4252-9b23-6e13eda9eb6f/sv-benchmarks/c/eca-rers2012/Problem01_label51.c[18730,18743] [2022-12-14 08:20:47,954 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:20:47,968 INFO L208 MainTranslator]: Completed translation [2022-12-14 08:20:47,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:20:47 WrapperNode [2022-12-14 08:20:47,969 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 08:20:47,970 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 08:20:47,970 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 08:20:47,970 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 08:20:47,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:20:47" (1/1) ... [2022-12-14 08:20:47,992 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:20:47" (1/1) ... [2022-12-14 08:20:48,026 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 657 [2022-12-14 08:20:48,026 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 08:20:48,027 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 08:20:48,027 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 08:20:48,027 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 08:20:48,034 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:20:47" (1/1) ... [2022-12-14 08:20:48,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:20:47" (1/1) ... [2022-12-14 08:20:48,038 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:20:47" (1/1) ... [2022-12-14 08:20:48,038 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:20:47" (1/1) ... [2022-12-14 08:20:48,058 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:20:47" (1/1) ... [2022-12-14 08:20:48,066 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:20:47" (1/1) ... [2022-12-14 08:20:48,070 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:20:47" (1/1) ... [2022-12-14 08:20:48,073 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:20:47" (1/1) ... [2022-12-14 08:20:48,077 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 08:20:48,078 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 08:20:48,078 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 08:20:48,078 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 08:20:48,078 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:20:47" (1/1) ... [2022-12-14 08:20:48,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:20:48,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dc25c58-3619-4252-9b23-6e13eda9eb6f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:20:48,112 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dc25c58-3619-4252-9b23-6e13eda9eb6f/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 08:20:48,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dc25c58-3619-4252-9b23-6e13eda9eb6f/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 08:20:48,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 08:20:48,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 08:20:48,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 08:20:48,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 08:20:48,217 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 08:20:48,219 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 08:20:48,924 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 08:20:49,028 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 08:20:49,029 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 08:20:49,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:20:49 BoogieIcfgContainer [2022-12-14 08:20:49,031 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 08:20:49,033 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 08:20:49,033 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 08:20:49,036 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 08:20:49,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 08:20:47" (1/3) ... [2022-12-14 08:20:49,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7329a8d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:20:49, skipping insertion in model container [2022-12-14 08:20:49,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:20:47" (2/3) ... [2022-12-14 08:20:49,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7329a8d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:20:49, skipping insertion in model container [2022-12-14 08:20:49,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:20:49" (3/3) ... [2022-12-14 08:20:49,038 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label51.c [2022-12-14 08:20:49,052 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 08:20:49,052 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 08:20:49,094 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 08:20:49,099 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=LoopsAndPotentialCycles, 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;@2d13422d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 08:20:49,099 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 08:20:49,103 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:20:49,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-12-14 08:20:49,110 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:20:49,111 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:20:49,112 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:20:49,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:20:49,117 INFO L85 PathProgramCache]: Analyzing trace with hash 379023495, now seen corresponding path program 1 times [2022-12-14 08:20:49,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:20:49,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809960137] [2022-12-14 08:20:49,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:20:49,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:20:49,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:20:49,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:20:49,421 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:20:49,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809960137] [2022-12-14 08:20:49,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809960137] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:20:49,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:20:49,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 08:20:49,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315448041] [2022-12-14 08:20:49,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:20:49,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:20:49,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:20:49,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:20:49,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:20:49,449 INFO L87 Difference]: Start difference. First operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:20:49,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:20:49,762 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2022-12-14 08:20:49,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:20:49,764 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-12-14 08:20:49,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:20:49,771 INFO L225 Difference]: With dead ends: 224 [2022-12-14 08:20:49,771 INFO L226 Difference]: Without dead ends: 145 [2022-12-14 08:20:49,773 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 [2022-12-14 08:20:49,776 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 26 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 08:20:49,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 29 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 08:20:49,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-12-14 08:20:49,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2022-12-14 08:20:49,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.7986111111111112) internal successors, (259), 144 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:20:49,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 259 transitions. [2022-12-14 08:20:49,809 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 259 transitions. Word has length 71 [2022-12-14 08:20:49,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:20:49,810 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 259 transitions. [2022-12-14 08:20:49,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:20:49,810 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 259 transitions. [2022-12-14 08:20:49,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-14 08:20:49,811 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:20:49,811 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:20:49,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 08:20:49,812 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:20:49,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:20:49,812 INFO L85 PathProgramCache]: Analyzing trace with hash -615338214, now seen corresponding path program 1 times [2022-12-14 08:20:49,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:20:49,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340308096] [2022-12-14 08:20:49,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:20:49,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:20:49,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:20:49,916 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:20:49,917 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:20:49,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340308096] [2022-12-14 08:20:49,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340308096] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:20:49,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:20:49,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 08:20:49,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451600837] [2022-12-14 08:20:49,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:20:49,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:20:49,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:20:49,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:20:49,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:20:49,920 INFO L87 Difference]: Start difference. First operand 145 states and 259 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:20:50,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:20:50,169 INFO L93 Difference]: Finished difference Result 431 states and 774 transitions. [2022-12-14 08:20:50,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:20:50,169 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-12-14 08:20:50,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:20:50,171 INFO L225 Difference]: With dead ends: 431 [2022-12-14 08:20:50,171 INFO L226 Difference]: Without dead ends: 287 [2022-12-14 08:20:50,171 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 [2022-12-14 08:20:50,172 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 82 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 08:20:50,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 32 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 08:20:50,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-12-14 08:20:50,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2022-12-14 08:20:50,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.6363636363636365) internal successors, (468), 286 states have internal predecessors, (468), 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) [2022-12-14 08:20:50,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 468 transitions. [2022-12-14 08:20:50,191 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 468 transitions. Word has length 77 [2022-12-14 08:20:50,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:20:50,192 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 468 transitions. [2022-12-14 08:20:50,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:20:50,192 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 468 transitions. [2022-12-14 08:20:50,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-12-14 08:20:50,195 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:20:50,195 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:20:50,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 08:20:50,195 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:20:50,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:20:50,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1583655814, now seen corresponding path program 1 times [2022-12-14 08:20:50,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:20:50,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969016206] [2022-12-14 08:20:50,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:20:50,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:20:50,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:20:50,568 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:20:50,568 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:20:50,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969016206] [2022-12-14 08:20:50,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969016206] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:20:50,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:20:50,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:20:50,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971215652] [2022-12-14 08:20:50,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:20:50,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 08:20:50,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:20:50,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 08:20:50,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:20:50,571 INFO L87 Difference]: Start difference. First operand 287 states and 468 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:20:50,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:20:50,913 INFO L93 Difference]: Finished difference Result 784 states and 1255 transitions. [2022-12-14 08:20:50,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 08:20:50,914 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-12-14 08:20:50,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:20:50,916 INFO L225 Difference]: With dead ends: 784 [2022-12-14 08:20:50,916 INFO L226 Difference]: Without dead ends: 429 [2022-12-14 08:20:50,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:20:50,918 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 68 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 08:20:50,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 75 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 08:20:50,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2022-12-14 08:20:50,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 358. [2022-12-14 08:20:50,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 357 states have (on average 1.350140056022409) internal successors, (482), 357 states have internal predecessors, (482), 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) [2022-12-14 08:20:50,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 482 transitions. [2022-12-14 08:20:50,935 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 482 transitions. Word has length 78 [2022-12-14 08:20:50,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:20:50,935 INFO L495 AbstractCegarLoop]: Abstraction has 358 states and 482 transitions. [2022-12-14 08:20:50,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:20:50,936 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 482 transitions. [2022-12-14 08:20:50,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-12-14 08:20:50,938 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:20:50,938 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:20:50,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 08:20:50,939 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:20:50,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:20:50,939 INFO L85 PathProgramCache]: Analyzing trace with hash -2090520904, now seen corresponding path program 1 times [2022-12-14 08:20:50,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:20:50,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843770587] [2022-12-14 08:20:50,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:20:50,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:20:50,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:20:51,073 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 08:20:51,073 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:20:51,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843770587] [2022-12-14 08:20:51,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843770587] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:20:51,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:20:51,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 08:20:51,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779407499] [2022-12-14 08:20:51,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:20:51,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:20:51,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:20:51,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:20:51,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:20:51,075 INFO L87 Difference]: Start difference. First operand 358 states and 482 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:20:51,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:20:51,262 INFO L93 Difference]: Finished difference Result 786 states and 1062 transitions. [2022-12-14 08:20:51,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:20:51,263 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-12-14 08:20:51,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:20:51,264 INFO L225 Difference]: With dead ends: 786 [2022-12-14 08:20:51,264 INFO L226 Difference]: Without dead ends: 429 [2022-12-14 08:20:51,265 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 [2022-12-14 08:20:51,266 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 64 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 08:20:51,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 43 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 08:20:51,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2022-12-14 08:20:51,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2022-12-14 08:20:51,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 428 states have (on average 1.3200934579439252) internal successors, (565), 428 states have internal predecessors, (565), 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) [2022-12-14 08:20:51,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 565 transitions. [2022-12-14 08:20:51,275 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 565 transitions. Word has length 86 [2022-12-14 08:20:51,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:20:51,275 INFO L495 AbstractCegarLoop]: Abstraction has 429 states and 565 transitions. [2022-12-14 08:20:51,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:20:51,275 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 565 transitions. [2022-12-14 08:20:51,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-12-14 08:20:51,277 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:20:51,277 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:20:51,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 08:20:51,277 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:20:51,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:20:51,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1999069766, now seen corresponding path program 1 times [2022-12-14 08:20:51,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:20:51,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899011630] [2022-12-14 08:20:51,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:20:51,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:20:51,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:20:51,339 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-14 08:20:51,339 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:20:51,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899011630] [2022-12-14 08:20:51,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899011630] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:20:51,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:20:51,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:20:51,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745415144] [2022-12-14 08:20:51,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:20:51,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:20:51,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:20:51,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:20:51,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:20:51,342 INFO L87 Difference]: Start difference. First operand 429 states and 565 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:20:51,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:20:51,570 INFO L93 Difference]: Finished difference Result 1212 states and 1574 transitions. [2022-12-14 08:20:51,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:20:51,570 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2022-12-14 08:20:51,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:20:51,575 INFO L225 Difference]: With dead ends: 1212 [2022-12-14 08:20:51,575 INFO L226 Difference]: Without dead ends: 784 [2022-12-14 08:20:51,576 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 [2022-12-14 08:20:51,577 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 74 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 08:20:51,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 15 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 08:20:51,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2022-12-14 08:20:51,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 571. [2022-12-14 08:20:51,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 570 states have (on average 1.305263157894737) internal successors, (744), 570 states have internal predecessors, (744), 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) [2022-12-14 08:20:51,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 744 transitions. [2022-12-14 08:20:51,588 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 744 transitions. Word has length 95 [2022-12-14 08:20:51,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:20:51,589 INFO L495 AbstractCegarLoop]: Abstraction has 571 states and 744 transitions. [2022-12-14 08:20:51,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:20:51,589 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 744 transitions. [2022-12-14 08:20:51,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-12-14 08:20:51,590 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:20:51,590 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:20:51,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 08:20:51,590 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:20:51,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:20:51,591 INFO L85 PathProgramCache]: Analyzing trace with hash 812559337, now seen corresponding path program 1 times [2022-12-14 08:20:51,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:20:51,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478282305] [2022-12-14 08:20:51,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:20:51,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:20:51,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:20:51,676 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 08:20:51,676 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:20:51,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478282305] [2022-12-14 08:20:51,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478282305] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:20:51,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:20:51,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:20:51,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898441344] [2022-12-14 08:20:51,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:20:51,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 08:20:51,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:20:51,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 08:20:51,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:20:51,678 INFO L87 Difference]: Start difference. First operand 571 states and 744 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 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) [2022-12-14 08:20:52,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:20:52,022 INFO L93 Difference]: Finished difference Result 1283 states and 1708 transitions. [2022-12-14 08:20:52,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 08:20:52,022 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 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 101 [2022-12-14 08:20:52,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:20:52,024 INFO L225 Difference]: With dead ends: 1283 [2022-12-14 08:20:52,024 INFO L226 Difference]: Without dead ends: 713 [2022-12-14 08:20:52,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:20:52,026 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 202 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 08:20:52,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 30 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 08:20:52,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2022-12-14 08:20:52,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 713. [2022-12-14 08:20:52,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 712 states have (on average 1.2879213483146068) internal successors, (917), 712 states have internal predecessors, (917), 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) [2022-12-14 08:20:52,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 917 transitions. [2022-12-14 08:20:52,037 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 917 transitions. Word has length 101 [2022-12-14 08:20:52,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:20:52,037 INFO L495 AbstractCegarLoop]: Abstraction has 713 states and 917 transitions. [2022-12-14 08:20:52,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 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) [2022-12-14 08:20:52,037 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 917 transitions. [2022-12-14 08:20:52,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-12-14 08:20:52,038 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:20:52,039 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:20:52,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 08:20:52,039 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:20:52,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:20:52,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1324202924, now seen corresponding path program 1 times [2022-12-14 08:20:52,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:20:52,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094319447] [2022-12-14 08:20:52,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:20:52,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:20:52,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:20:52,146 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-14 08:20:52,146 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:20:52,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094319447] [2022-12-14 08:20:52,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094319447] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:20:52,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:20:52,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:20:52,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803471727] [2022-12-14 08:20:52,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:20:52,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 08:20:52,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:20:52,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 08:20:52,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:20:52,148 INFO L87 Difference]: Start difference. First operand 713 states and 917 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 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) [2022-12-14 08:20:52,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:20:52,497 INFO L93 Difference]: Finished difference Result 1709 states and 2197 transitions. [2022-12-14 08:20:52,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 08:20:52,498 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 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 115 [2022-12-14 08:20:52,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:20:52,503 INFO L225 Difference]: With dead ends: 1709 [2022-12-14 08:20:52,503 INFO L226 Difference]: Without dead ends: 997 [2022-12-14 08:20:52,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:20:52,505 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 116 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 08:20:52,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 43 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 08:20:52,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2022-12-14 08:20:52,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 926. [2022-12-14 08:20:52,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 925 states have (on average 1.2627027027027027) internal successors, (1168), 925 states have internal predecessors, (1168), 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) [2022-12-14 08:20:52,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1168 transitions. [2022-12-14 08:20:52,519 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1168 transitions. Word has length 115 [2022-12-14 08:20:52,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:20:52,520 INFO L495 AbstractCegarLoop]: Abstraction has 926 states and 1168 transitions. [2022-12-14 08:20:52,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 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) [2022-12-14 08:20:52,520 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1168 transitions. [2022-12-14 08:20:52,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-12-14 08:20:52,521 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:20:52,521 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:20:52,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 08:20:52,522 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:20:52,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:20:52,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1736607012, now seen corresponding path program 1 times [2022-12-14 08:20:52,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:20:52,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830125098] [2022-12-14 08:20:52,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:20:52,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:20:52,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:20:52,631 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:20:52,631 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:20:52,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830125098] [2022-12-14 08:20:52,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830125098] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:20:52,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:20:52,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 08:20:52,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756427891] [2022-12-14 08:20:52,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:20:52,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 08:20:52,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:20:52,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 08:20:52,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:20:52,632 INFO L87 Difference]: Start difference. First operand 926 states and 1168 transitions. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 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) [2022-12-14 08:20:53,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:20:53,002 INFO L93 Difference]: Finished difference Result 2064 states and 2592 transitions. [2022-12-14 08:20:53,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 08:20:53,002 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 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 134 [2022-12-14 08:20:53,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:20:53,008 INFO L225 Difference]: With dead ends: 2064 [2022-12-14 08:20:53,008 INFO L226 Difference]: Without dead ends: 1139 [2022-12-14 08:20:53,009 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 [2022-12-14 08:20:53,010 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 101 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 08:20:53,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 25 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 08:20:53,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2022-12-14 08:20:53,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 855. [2022-12-14 08:20:53,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 854 states have (on average 1.2084309133489461) internal successors, (1032), 854 states have internal predecessors, (1032), 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) [2022-12-14 08:20:53,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1032 transitions. [2022-12-14 08:20:53,024 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1032 transitions. Word has length 134 [2022-12-14 08:20:53,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:20:53,024 INFO L495 AbstractCegarLoop]: Abstraction has 855 states and 1032 transitions. [2022-12-14 08:20:53,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 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) [2022-12-14 08:20:53,024 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1032 transitions. [2022-12-14 08:20:53,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-12-14 08:20:53,027 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:20:53,027 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:20:53,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 08:20:53,028 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:20:53,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:20:53,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1971821860, now seen corresponding path program 1 times [2022-12-14 08:20:53,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:20:53,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658118223] [2022-12-14 08:20:53,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:20:53,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:20:53,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:20:53,154 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 161 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-12-14 08:20:53,154 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:20:53,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658118223] [2022-12-14 08:20:53,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658118223] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:20:53,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:20:53,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:20:53,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345450342] [2022-12-14 08:20:53,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:20:53,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:20:53,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:20:53,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:20:53,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:20:53,156 INFO L87 Difference]: Start difference. First operand 855 states and 1032 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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) [2022-12-14 08:20:53,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:20:53,358 INFO L93 Difference]: Finished difference Result 1922 states and 2320 transitions. [2022-12-14 08:20:53,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:20:53,359 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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 177 [2022-12-14 08:20:53,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:20:53,364 INFO L225 Difference]: With dead ends: 1922 [2022-12-14 08:20:53,364 INFO L226 Difference]: Without dead ends: 1068 [2022-12-14 08:20:53,365 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 [2022-12-14 08:20:53,365 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 26 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 08:20:53,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 113 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 08:20:53,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2022-12-14 08:20:53,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 997. [2022-12-14 08:20:53,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 996 states have (on average 1.1927710843373494) internal successors, (1188), 996 states have internal predecessors, (1188), 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) [2022-12-14 08:20:53,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1188 transitions. [2022-12-14 08:20:53,382 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1188 transitions. Word has length 177 [2022-12-14 08:20:53,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:20:53,383 INFO L495 AbstractCegarLoop]: Abstraction has 997 states and 1188 transitions. [2022-12-14 08:20:53,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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) [2022-12-14 08:20:53,383 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1188 transitions. [2022-12-14 08:20:53,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-12-14 08:20:53,385 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:20:53,385 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:20:53,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 08:20:53,386 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:20:53,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:20:53,386 INFO L85 PathProgramCache]: Analyzing trace with hash 10517947, now seen corresponding path program 1 times [2022-12-14 08:20:53,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:20:53,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143098942] [2022-12-14 08:20:53,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:20:53,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:20:53,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:20:53,715 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 126 proven. 69 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-12-14 08:20:53,715 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:20:53,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143098942] [2022-12-14 08:20:53,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143098942] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:20:53,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634986067] [2022-12-14 08:20:53,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:20:53,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:20:53,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dc25c58-3619-4252-9b23-6e13eda9eb6f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:20:53,717 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dc25c58-3619-4252-9b23-6e13eda9eb6f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:20:53,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dc25c58-3619-4252-9b23-6e13eda9eb6f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 08:20:53,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:20:53,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 08:20:53,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:20:53,940 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2022-12-14 08:20:53,940 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:20:53,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634986067] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:20:53,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 08:20:53,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-12-14 08:20:53,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470014258] [2022-12-14 08:20:53,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:20:53,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:20:53,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:20:53,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:20:53,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-14 08:20:53,943 INFO L87 Difference]: Start difference. First operand 997 states and 1188 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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) [2022-12-14 08:20:54,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:20:54,168 INFO L93 Difference]: Finished difference Result 2277 states and 2696 transitions. [2022-12-14 08:20:54,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:20:54,169 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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 199 [2022-12-14 08:20:54,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:20:54,172 INFO L225 Difference]: With dead ends: 2277 [2022-12-14 08:20:54,172 INFO L226 Difference]: Without dead ends: 1210 [2022-12-14 08:20:54,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-14 08:20:54,174 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 2 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 08:20:54,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 117 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 08:20:54,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2022-12-14 08:20:54,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1139. [2022-12-14 08:20:54,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 1138 states have (on average 1.149384885764499) internal successors, (1308), 1138 states have internal predecessors, (1308), 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) [2022-12-14 08:20:54,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1308 transitions. [2022-12-14 08:20:54,201 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1308 transitions. Word has length 199 [2022-12-14 08:20:54,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:20:54,202 INFO L495 AbstractCegarLoop]: Abstraction has 1139 states and 1308 transitions. [2022-12-14 08:20:54,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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) [2022-12-14 08:20:54,202 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1308 transitions. [2022-12-14 08:20:54,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-12-14 08:20:54,205 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:20:54,206 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:20:54,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dc25c58-3619-4252-9b23-6e13eda9eb6f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 08:20:54,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dc25c58-3619-4252-9b23-6e13eda9eb6f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:20:54,406 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:20:54,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:20:54,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1502816078, now seen corresponding path program 1 times [2022-12-14 08:20:54,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:20:54,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96247528] [2022-12-14 08:20:54,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:20:54,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:20:54,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:20:54,717 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 143 proven. 86 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-14 08:20:54,717 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:20:54,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96247528] [2022-12-14 08:20:54,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96247528] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:20:54,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205540657] [2022-12-14 08:20:54,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:20:54,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:20:54,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dc25c58-3619-4252-9b23-6e13eda9eb6f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:20:54,718 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dc25c58-3619-4252-9b23-6e13eda9eb6f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:20:54,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dc25c58-3619-4252-9b23-6e13eda9eb6f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 08:20:54,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:20:54,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 08:20:54,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:20:54,922 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2022-12-14 08:20:54,922 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:20:54,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205540657] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:20:54,922 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 08:20:54,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-12-14 08:20:54,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981226133] [2022-12-14 08:20:54,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:20:54,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:20:54,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:20:54,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:20:54,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-14 08:20:54,923 INFO L87 Difference]: Start difference. First operand 1139 states and 1308 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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) [2022-12-14 08:20:55,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:20:55,083 INFO L93 Difference]: Finished difference Result 2417 states and 2781 transitions. [2022-12-14 08:20:55,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:20:55,083 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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 216 [2022-12-14 08:20:55,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:20:55,084 INFO L225 Difference]: With dead ends: 2417 [2022-12-14 08:20:55,084 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 08:20:55,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-14 08:20:55,086 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 11 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:20:55,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 102 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 08:20:55,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 08:20:55,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 08:20:55,087 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) [2022-12-14 08:20:55,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 08:20:55,087 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 216 [2022-12-14 08:20:55,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:20:55,088 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 08:20:55,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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) [2022-12-14 08:20:55,088 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 08:20:55,088 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 08:20:55,090 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 08:20:55,096 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dc25c58-3619-4252-9b23-6e13eda9eb6f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 08:20:55,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dc25c58-3619-4252-9b23-6e13eda9eb6f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-14 08:20:55,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-14 08:20:55,773 INFO L899 garLoopResultBuilder]: For program point L102(lines 102 400) no Hoare annotation was computed. [2022-12-14 08:20:55,773 INFO L899 garLoopResultBuilder]: For program point L598(line 598) no Hoare annotation was computed. [2022-12-14 08:20:55,773 INFO L899 garLoopResultBuilder]: For program point L334(lines 334 400) no Hoare annotation was computed. [2022-12-14 08:20:55,774 INFO L899 garLoopResultBuilder]: For program point L500-1(lines 40 585) no Hoare annotation was computed. [2022-12-14 08:20:55,774 INFO L899 garLoopResultBuilder]: For program point L302(lines 302 400) no Hoare annotation was computed. [2022-12-14 08:20:55,774 INFO L899 garLoopResultBuilder]: For program point L170(lines 170 400) no Hoare annotation was computed. [2022-12-14 08:20:55,774 INFO L899 garLoopResultBuilder]: For program point L204(lines 204 400) no Hoare annotation was computed. [2022-12-14 08:20:55,774 INFO L899 garLoopResultBuilder]: For program point L72(lines 72 400) no Hoare annotation was computed. [2022-12-14 08:20:55,774 INFO L899 garLoopResultBuilder]: For program point L271(lines 271 400) no Hoare annotation was computed. [2022-12-14 08:20:55,774 INFO L899 garLoopResultBuilder]: For program point L139(lines 139 400) no Hoare annotation was computed. [2022-12-14 08:20:55,774 INFO L899 garLoopResultBuilder]: For program point L503-1(lines 40 585) no Hoare annotation was computed. [2022-12-14 08:20:55,774 INFO L899 garLoopResultBuilder]: For program point L371(lines 371 400) no Hoare annotation was computed. [2022-12-14 08:20:55,774 INFO L899 garLoopResultBuilder]: For program point L107(lines 107 400) no Hoare annotation was computed. [2022-12-14 08:20:55,774 INFO L899 garLoopResultBuilder]: For program point L41(lines 41 400) no Hoare annotation was computed. [2022-12-14 08:20:55,774 INFO L899 garLoopResultBuilder]: For program point L504(line 504) no Hoare annotation was computed. [2022-12-14 08:20:55,775 INFO L899 garLoopResultBuilder]: For program point L339(lines 339 400) no Hoare annotation was computed. [2022-12-14 08:20:55,775 INFO L899 garLoopResultBuilder]: For program point L207(lines 207 400) no Hoare annotation was computed. [2022-12-14 08:20:55,775 INFO L899 garLoopResultBuilder]: For program point L75(lines 75 400) no Hoare annotation was computed. [2022-12-14 08:20:55,775 INFO L899 garLoopResultBuilder]: For program point L373(lines 373 400) no Hoare annotation was computed. [2022-12-14 08:20:55,775 INFO L899 garLoopResultBuilder]: For program point L241(lines 241 400) no Hoare annotation was computed. [2022-12-14 08:20:55,775 INFO L899 garLoopResultBuilder]: For program point L175(lines 175 400) no Hoare annotation was computed. [2022-12-14 08:20:55,775 INFO L899 garLoopResultBuilder]: For program point L275(lines 275 400) no Hoare annotation was computed. [2022-12-14 08:20:55,775 INFO L899 garLoopResultBuilder]: For program point L375(lines 375 400) no Hoare annotation was computed. [2022-12-14 08:20:55,775 INFO L899 garLoopResultBuilder]: For program point L309(lines 309 400) no Hoare annotation was computed. [2022-12-14 08:20:55,775 INFO L899 garLoopResultBuilder]: For program point L45(lines 45 400) no Hoare annotation was computed. [2022-12-14 08:20:55,775 INFO L899 garLoopResultBuilder]: For program point L343(lines 343 400) no Hoare annotation was computed. [2022-12-14 08:20:55,775 INFO L899 garLoopResultBuilder]: For program point L112(lines 112 400) no Hoare annotation was computed. [2022-12-14 08:20:55,776 INFO L899 garLoopResultBuilder]: For program point L278(lines 278 400) no Hoare annotation was computed. [2022-12-14 08:20:55,776 INFO L899 garLoopResultBuilder]: For program point L146(lines 146 400) no Hoare annotation was computed. [2022-12-14 08:20:55,776 INFO L899 garLoopResultBuilder]: For program point L213(lines 213 400) no Hoare annotation was computed. [2022-12-14 08:20:55,776 INFO L899 garLoopResultBuilder]: For program point L82(lines 82 400) no Hoare annotation was computed. [2022-12-14 08:20:55,776 INFO L899 garLoopResultBuilder]: For program point L347(lines 347 400) no Hoare annotation was computed. [2022-12-14 08:20:55,776 INFO L899 garLoopResultBuilder]: For program point L248(lines 248 400) no Hoare annotation was computed. [2022-12-14 08:20:55,776 INFO L899 garLoopResultBuilder]: For program point L183(lines 183 400) no Hoare annotation was computed. [2022-12-14 08:20:55,776 INFO L899 garLoopResultBuilder]: For program point L150(lines 150 400) no Hoare annotation was computed. [2022-12-14 08:20:55,776 INFO L899 garLoopResultBuilder]: For program point L382(lines 382 400) no Hoare annotation was computed. [2022-12-14 08:20:55,776 INFO L899 garLoopResultBuilder]: For program point L316(lines 316 400) no Hoare annotation was computed. [2022-12-14 08:20:55,776 INFO L899 garLoopResultBuilder]: For program point L283(lines 283 400) no Hoare annotation was computed. [2022-12-14 08:20:55,776 INFO L899 garLoopResultBuilder]: For program point L118(lines 118 400) no Hoare annotation was computed. [2022-12-14 08:20:55,776 INFO L899 garLoopResultBuilder]: For program point L218(lines 218 400) no Hoare annotation was computed. [2022-12-14 08:20:55,777 INFO L899 garLoopResultBuilder]: For program point L53(lines 53 400) no Hoare annotation was computed. [2022-12-14 08:20:55,777 INFO L899 garLoopResultBuilder]: For program point L154(lines 154 400) no Hoare annotation was computed. [2022-12-14 08:20:55,777 INFO L899 garLoopResultBuilder]: For program point L188(lines 188 400) no Hoare annotation was computed. [2022-12-14 08:20:55,777 INFO L899 garLoopResultBuilder]: For program point L387(lines 387 400) no Hoare annotation was computed. [2022-12-14 08:20:55,777 INFO L899 garLoopResultBuilder]: For program point L288(lines 288 400) no Hoare annotation was computed. [2022-12-14 08:20:55,777 INFO L899 garLoopResultBuilder]: For program point L255(lines 255 400) no Hoare annotation was computed. [2022-12-14 08:20:55,777 INFO L899 garLoopResultBuilder]: For program point L90(lines 90 400) no Hoare annotation was computed. [2022-12-14 08:20:55,777 INFO L899 garLoopResultBuilder]: For program point L355(lines 355 400) no Hoare annotation was computed. [2022-12-14 08:20:55,777 INFO L899 garLoopResultBuilder]: For program point L322(lines 322 400) no Hoare annotation was computed. [2022-12-14 08:20:55,777 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-12-14 08:20:55,777 INFO L899 garLoopResultBuilder]: For program point L124(lines 124 400) no Hoare annotation was computed. [2022-12-14 08:20:55,778 INFO L902 garLoopResultBuilder]: At program point L587(lines 587 604) the Hoare annotation is: true [2022-12-14 08:20:55,778 INFO L899 garLoopResultBuilder]: For program point L224(lines 224 400) no Hoare annotation was computed. [2022-12-14 08:20:55,778 INFO L899 garLoopResultBuilder]: For program point L158(lines 158 400) no Hoare annotation was computed. [2022-12-14 08:20:55,778 INFO L899 garLoopResultBuilder]: For program point L59(lines 59 400) no Hoare annotation was computed. [2022-12-14 08:20:55,778 INFO L899 garLoopResultBuilder]: For program point L94(lines 94 400) no Hoare annotation was computed. [2022-12-14 08:20:55,778 INFO L899 garLoopResultBuilder]: For program point L392(lines 392 400) no Hoare annotation was computed. [2022-12-14 08:20:55,778 INFO L899 garLoopResultBuilder]: For program point L326(lines 326 400) no Hoare annotation was computed. [2022-12-14 08:20:55,778 INFO L899 garLoopResultBuilder]: For program point L260(lines 260 400) no Hoare annotation was computed. [2022-12-14 08:20:55,778 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2022-12-14 08:20:55,778 INFO L899 garLoopResultBuilder]: For program point L228(lines 228 400) no Hoare annotation was computed. [2022-12-14 08:20:55,778 INFO L899 garLoopResultBuilder]: For program point L162(lines 162 400) no Hoare annotation was computed. [2022-12-14 08:20:55,778 INFO L899 garLoopResultBuilder]: For program point L129(lines 129 400) no Hoare annotation was computed. [2022-12-14 08:20:55,778 INFO L899 garLoopResultBuilder]: For program point L328(lines 328 400) no Hoare annotation was computed. [2022-12-14 08:20:55,779 INFO L899 garLoopResultBuilder]: For program point L196(lines 196 400) no Hoare annotation was computed. [2022-12-14 08:20:55,779 INFO L899 garLoopResultBuilder]: For program point L64(lines 64 400) no Hoare annotation was computed. [2022-12-14 08:20:55,779 INFO L895 garLoopResultBuilder]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse3 (= ~a16~0 6)) (.cse5 (<= 15 ~a8~0)) (.cse1 (= ~a17~0 1)) (.cse4 (= ~a7~0 1)) (.cse7 (<= ~a16~0 4)) (.cse2 (= ~a20~0 1)) (.cse0 (= ~a21~0 1)) (.cse6 (<= ~a16~0 5))) (or (and (= ~a12~0 8) .cse0 .cse1 .cse2) (and .cse3 .cse4 .cse2) (and .cse0 .cse2 .cse5) (and .cse3 .cse0 .cse5) (and .cse0 .cse4 .cse6) (and .cse0 .cse7) (and .cse4 .cse7 .cse2) (and .cse1 .cse4 .cse6 .cse2) (and .cse1 .cse4 .cse7) (and (not .cse2) .cse0 .cse6))) [2022-12-14 08:20:55,779 INFO L899 garLoopResultBuilder]: For program point L296(lines 296 400) no Hoare annotation was computed. [2022-12-14 08:20:55,779 INFO L895 garLoopResultBuilder]: At program point calculate_output_returnLabel#1(lines 40 585) the Hoare annotation is: (let ((.cse3 (= ~a16~0 6)) (.cse5 (<= 15 ~a8~0)) (.cse1 (= ~a17~0 1)) (.cse4 (= ~a7~0 1)) (.cse7 (<= ~a16~0 4)) (.cse2 (= ~a20~0 1)) (.cse0 (= ~a21~0 1)) (.cse6 (<= ~a16~0 5))) (or (and (= ~a12~0 8) .cse0 .cse1 .cse2) (and .cse3 .cse4 .cse2) (and .cse0 .cse2 .cse5) (and .cse3 .cse0 .cse5) (and .cse0 .cse4 .cse6) (and .cse0 .cse7) (and .cse4 .cse7 .cse2) (and .cse1 .cse4 .cse6 .cse2) (and .cse1 .cse4 .cse7) (and (not .cse2) .cse0 .cse6))) [2022-12-14 08:20:55,780 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 504) no Hoare annotation was computed. [2022-12-14 08:20:55,780 INFO L899 garLoopResultBuilder]: For program point L363(lines 363 400) no Hoare annotation was computed. [2022-12-14 08:20:55,780 INFO L899 garLoopResultBuilder]: For program point L199(lines 199 400) no Hoare annotation was computed. [2022-12-14 08:20:55,780 INFO L899 garLoopResultBuilder]: For program point L365(lines 365 400) no Hoare annotation was computed. [2022-12-14 08:20:55,780 INFO L899 garLoopResultBuilder]: For program point L266(lines 266 400) no Hoare annotation was computed. [2022-12-14 08:20:55,780 INFO L899 garLoopResultBuilder]: For program point L233(lines 233 400) no Hoare annotation was computed. [2022-12-14 08:20:55,780 INFO L899 garLoopResultBuilder]: For program point L134(lines 134 400) no Hoare annotation was computed. [2022-12-14 08:20:55,783 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:20:55,785 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 08:20:55,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 08:20:55 BoogieIcfgContainer [2022-12-14 08:20:55,800 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 08:20:55,801 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 08:20:55,801 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 08:20:55,801 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 08:20:55,802 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:20:49" (3/4) ... [2022-12-14 08:20:55,805 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 08:20:55,820 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 109 nodes and edges [2022-12-14 08:20:55,821 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2022-12-14 08:20:55,822 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2022-12-14 08:20:55,822 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 08:20:55,897 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dc25c58-3619-4252-9b23-6e13eda9eb6f/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 08:20:55,897 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 08:20:55,897 INFO L158 Benchmark]: Toolchain (without parser) took 8286.01ms. Allocated memory was 130.0MB in the beginning and 272.6MB in the end (delta: 142.6MB). Free memory was 88.5MB in the beginning and 134.8MB in the end (delta: -46.2MB). Peak memory consumption was 98.7MB. Max. memory is 16.1GB. [2022-12-14 08:20:55,898 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 130.0MB. Free memory is still 101.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 08:20:55,898 INFO L158 Benchmark]: CACSL2BoogieTranslator took 356.62ms. Allocated memory is still 130.0MB. Free memory was 88.2MB in the beginning and 60.9MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-12-14 08:20:55,898 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.68ms. Allocated memory is still 130.0MB. Free memory was 60.9MB in the beginning and 55.0MB in the end (delta: 5.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-12-14 08:20:55,899 INFO L158 Benchmark]: Boogie Preprocessor took 50.43ms. Allocated memory is still 130.0MB. Free memory was 55.0MB in the beginning and 97.1MB in the end (delta: -42.1MB). Peak memory consumption was 12.4MB. Max. memory is 16.1GB. [2022-12-14 08:20:55,899 INFO L158 Benchmark]: RCFGBuilder took 953.46ms. Allocated memory was 130.0MB in the beginning and 157.3MB in the end (delta: 27.3MB). Free memory was 97.1MB in the beginning and 62.5MB in the end (delta: 34.6MB). Peak memory consumption was 66.6MB. Max. memory is 16.1GB. [2022-12-14 08:20:55,899 INFO L158 Benchmark]: TraceAbstraction took 6767.49ms. Allocated memory was 157.3MB in the beginning and 272.6MB in the end (delta: 115.3MB). Free memory was 61.4MB in the beginning and 145.5MB in the end (delta: -84.1MB). Peak memory consumption was 72.1MB. Max. memory is 16.1GB. [2022-12-14 08:20:55,899 INFO L158 Benchmark]: Witness Printer took 95.98ms. Allocated memory is still 272.6MB. Free memory was 145.5MB in the beginning and 134.8MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 08:20:55,901 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 130.0MB. Free memory is still 101.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 356.62ms. Allocated memory is still 130.0MB. Free memory was 88.2MB in the beginning and 60.9MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.68ms. Allocated memory is still 130.0MB. Free memory was 60.9MB in the beginning and 55.0MB in the end (delta: 5.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.43ms. Allocated memory is still 130.0MB. Free memory was 55.0MB in the beginning and 97.1MB in the end (delta: -42.1MB). Peak memory consumption was 12.4MB. Max. memory is 16.1GB. * RCFGBuilder took 953.46ms. Allocated memory was 130.0MB in the beginning and 157.3MB in the end (delta: 27.3MB). Free memory was 97.1MB in the beginning and 62.5MB in the end (delta: 34.6MB). Peak memory consumption was 66.6MB. Max. memory is 16.1GB. * TraceAbstraction took 6767.49ms. Allocated memory was 157.3MB in the beginning and 272.6MB in the end (delta: 115.3MB). Free memory was 61.4MB in the beginning and 145.5MB in the end (delta: -84.1MB). Peak memory consumption was 72.1MB. Max. memory is 16.1GB. * Witness Printer took 95.98ms. Allocated memory is still 272.6MB. Free memory was 145.5MB in the beginning and 134.8MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. 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: 504]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6.7s, OverallIterations: 11, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 772 SdHoareTripleChecker+Valid, 2.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 772 mSDsluCounter, 624 SdHoareTripleChecker+Invalid, 2.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 57 mSDsCounter, 669 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2782 IncrementalHoareTripleChecker+Invalid, 3451 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 669 mSolverCounterUnsat, 567 mSDtfsCounter, 2782 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 448 GetRequests, 427 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1139occurred in iteration=10, InterpolantAutomatonStates: 37, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 781 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 45 NumberOfFragments, 211 HoareAnnotationTreeSize, 3 FomulaSimplifications, 198 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 3 FomulaSimplificationsInter, 3636 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 1764 NumberOfCodeBlocks, 1764 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 1751 ConstructedInterpolants, 0 QuantifiedInterpolants, 8384 SizeOfPredicates, 0 NumberOfNonLiveVariables, 877 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 13 InterpolantComputations, 11 PerfectInterpolantSequences, 1288/1443 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: 40]: Loop Invariant Derived loop invariant: (((((((((((a12 == 8 && a21 == 1) && a17 == 1) && a20 == 1) || ((a16 == 6 && a7 == 1) && a20 == 1)) || ((a21 == 1 && a20 == 1) && 15 <= a8)) || ((a16 == 6 && a21 == 1) && 15 <= a8)) || ((a21 == 1 && a7 == 1) && a16 <= 5)) || (a21 == 1 && a16 <= 4)) || ((a7 == 1 && a16 <= 4) && a20 == 1)) || (((a17 == 1 && a7 == 1) && a16 <= 5) && a20 == 1)) || ((a17 == 1 && a7 == 1) && a16 <= 4)) || ((!(a20 == 1) && a21 == 1) && a16 <= 5) - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: (((((((((((a12 == 8 && a21 == 1) && a17 == 1) && a20 == 1) || ((a16 == 6 && a7 == 1) && a20 == 1)) || ((a21 == 1 && a20 == 1) && 15 <= a8)) || ((a16 == 6 && a21 == 1) && 15 <= a8)) || ((a21 == 1 && a7 == 1) && a16 <= 5)) || (a21 == 1 && a16 <= 4)) || ((a7 == 1 && a16 <= 4) && a20 == 1)) || (((a17 == 1 && a7 == 1) && a16 <= 5) && a20 == 1)) || ((a17 == 1 && a7 == 1) && a16 <= 4)) || ((!(a20 == 1) && a21 == 1) && a16 <= 5) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-12-14 08:20:55,918 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dc25c58-3619-4252-9b23-6e13eda9eb6f/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE