./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label48.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3855d5b-7d54-483d-a669-daff2903156e/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3855d5b-7d54-483d-a669-daff2903156e/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_d3855d5b-7d54-483d-a669-daff2903156e/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3855d5b-7d54-483d-a669-daff2903156e/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label48.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3855d5b-7d54-483d-a669-daff2903156e/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_d3855d5b-7d54-483d-a669-daff2903156e/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 1479ddd90ec2fcde77d063083da596ee818d8098bb47b0581d7cfb4606042d51 --- 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 16:05:05,051 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 16:05:05,053 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 16:05:05,070 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 16:05:05,071 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 16:05:05,071 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 16:05:05,073 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 16:05:05,074 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 16:05:05,075 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 16:05:05,076 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 16:05:05,077 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 16:05:05,078 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 16:05:05,078 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 16:05:05,079 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 16:05:05,080 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 16:05:05,081 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 16:05:05,082 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 16:05:05,083 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 16:05:05,084 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 16:05:05,086 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 16:05:05,087 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 16:05:05,089 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 16:05:05,090 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 16:05:05,091 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 16:05:05,094 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 16:05:05,094 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 16:05:05,094 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 16:05:05,095 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 16:05:05,096 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 16:05:05,097 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 16:05:05,097 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 16:05:05,098 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 16:05:05,098 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 16:05:05,099 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 16:05:05,100 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 16:05:05,100 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 16:05:05,100 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 16:05:05,101 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 16:05:05,101 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 16:05:05,102 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 16:05:05,102 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 16:05:05,103 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3855d5b-7d54-483d-a669-daff2903156e/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 16:05:05,123 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 16:05:05,124 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 16:05:05,124 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 16:05:05,129 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 16:05:05,130 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 16:05:05,130 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 16:05:05,130 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 16:05:05,130 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 16:05:05,131 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 16:05:05,131 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 16:05:05,131 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 16:05:05,131 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 16:05:05,131 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 16:05:05,132 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 16:05:05,132 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 16:05:05,132 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 16:05:05,132 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 16:05:05,132 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 16:05:05,133 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 16:05:05,133 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 16:05:05,134 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 16:05:05,134 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 16:05:05,134 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 16:05:05,134 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 16:05:05,134 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 16:05:05,134 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 16:05:05,135 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 16:05:05,135 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 16:05:05,135 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 16:05:05,135 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 16:05:05,135 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 16:05:05,136 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 16:05:05,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 16:05:05,136 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 16:05:05,136 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 16:05:05,136 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 16:05:05,137 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 16:05:05,137 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 16:05:05,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 16:05:05,137 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 16:05:05,137 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 16:05:05,137 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_d3855d5b-7d54-483d-a669-daff2903156e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3855d5b-7d54-483d-a669-daff2903156e/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1479ddd90ec2fcde77d063083da596ee818d8098bb47b0581d7cfb4606042d51 [2022-12-14 16:05:05,315 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 16:05:05,332 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 16:05:05,334 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 16:05:05,335 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 16:05:05,336 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 16:05:05,337 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3855d5b-7d54-483d-a669-daff2903156e/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/eca-rers2012/Problem01_label48.c [2022-12-14 16:05:07,984 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 16:05:08,168 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 16:05:08,169 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3855d5b-7d54-483d-a669-daff2903156e/sv-benchmarks/c/eca-rers2012/Problem01_label48.c [2022-12-14 16:05:08,177 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3855d5b-7d54-483d-a669-daff2903156e/bin/utaipan-gh47qXpMRh/data/245158dd3/e3fa4f6b82e7421e9b1dfbb3626be0c8/FLAG052edf2cc [2022-12-14 16:05:08,188 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3855d5b-7d54-483d-a669-daff2903156e/bin/utaipan-gh47qXpMRh/data/245158dd3/e3fa4f6b82e7421e9b1dfbb3626be0c8 [2022-12-14 16:05:08,190 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 16:05:08,191 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 16:05:08,191 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 16:05:08,191 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 16:05:08,194 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 16:05:08,195 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:05:08" (1/1) ... [2022-12-14 16:05:08,196 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e1a962f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:05:08, skipping insertion in model container [2022-12-14 16:05:08,196 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:05:08" (1/1) ... [2022-12-14 16:05:08,201 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 16:05:08,247 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 16:05:08,455 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_d3855d5b-7d54-483d-a669-daff2903156e/sv-benchmarks/c/eca-rers2012/Problem01_label48.c[20593,20606] [2022-12-14 16:05:08,469 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 16:05:08,478 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 16:05:08,543 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_d3855d5b-7d54-483d-a669-daff2903156e/sv-benchmarks/c/eca-rers2012/Problem01_label48.c[20593,20606] [2022-12-14 16:05:08,548 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 16:05:08,559 INFO L208 MainTranslator]: Completed translation [2022-12-14 16:05:08,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:05:08 WrapperNode [2022-12-14 16:05:08,560 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 16:05:08,561 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 16:05:08,561 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 16:05:08,561 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 16:05:08,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:05:08" (1/1) ... [2022-12-14 16:05:08,579 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:05:08" (1/1) ... [2022-12-14 16:05:08,630 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 657 [2022-12-14 16:05:08,631 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 16:05:08,631 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 16:05:08,631 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 16:05:08,631 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 16:05:08,638 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:05:08" (1/1) ... [2022-12-14 16:05:08,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:05:08" (1/1) ... [2022-12-14 16:05:08,641 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:05:08" (1/1) ... [2022-12-14 16:05:08,641 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:05:08" (1/1) ... [2022-12-14 16:05:08,654 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:05:08" (1/1) ... [2022-12-14 16:05:08,659 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:05:08" (1/1) ... [2022-12-14 16:05:08,662 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:05:08" (1/1) ... [2022-12-14 16:05:08,665 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:05:08" (1/1) ... [2022-12-14 16:05:08,670 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 16:05:08,671 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 16:05:08,671 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 16:05:08,671 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 16:05:08,672 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:05:08" (1/1) ... [2022-12-14 16:05:08,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 16:05:08,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3855d5b-7d54-483d-a669-daff2903156e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:05:08,697 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3855d5b-7d54-483d-a669-daff2903156e/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 16:05:08,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3855d5b-7d54-483d-a669-daff2903156e/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 16:05:08,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 16:05:08,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 16:05:08,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 16:05:08,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 16:05:08,795 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 16:05:08,796 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 16:05:09,523 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 16:05:09,652 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 16:05:09,652 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 16:05:09,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:05:09 BoogieIcfgContainer [2022-12-14 16:05:09,655 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 16:05:09,656 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 16:05:09,656 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 16:05:09,659 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 16:05:09,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 04:05:08" (1/3) ... [2022-12-14 16:05:09,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2caf3dae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:05:09, skipping insertion in model container [2022-12-14 16:05:09,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:05:08" (2/3) ... [2022-12-14 16:05:09,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2caf3dae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:05:09, skipping insertion in model container [2022-12-14 16:05:09,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:05:09" (3/3) ... [2022-12-14 16:05:09,661 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label48.c [2022-12-14 16:05:09,675 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 16:05:09,675 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 16:05:09,711 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 16:05:09,716 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;@52cb6cbc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 16:05:09,716 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 16:05:09,720 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 16:05:09,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-12-14 16:05:09,726 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:05:09,726 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 16:05:09,727 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:05:09,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:05:09,731 INFO L85 PathProgramCache]: Analyzing trace with hash -104647992, now seen corresponding path program 1 times [2022-12-14 16:05:09,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:05:09,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896393563] [2022-12-14 16:05:09,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:05:09,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:05:09,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:05:10,045 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 16:05:10,046 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:05:10,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896393563] [2022-12-14 16:05:10,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896393563] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:05:10,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 16:05:10,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 16:05:10,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455900287] [2022-12-14 16:05:10,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:05:10,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 16:05:10,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:05:10,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 16:05:10,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 16:05:10,077 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 16:05:10,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:05:10,372 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2022-12-14 16:05:10,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 16:05:10,375 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 16:05:10,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:05:10,384 INFO L225 Difference]: With dead ends: 224 [2022-12-14 16:05:10,385 INFO L226 Difference]: Without dead ends: 145 [2022-12-14 16:05:10,388 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 16:05:10,391 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 16:05:10,392 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 16:05:10,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-12-14 16:05:10,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2022-12-14 16:05:10,426 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 16:05:10,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 259 transitions. [2022-12-14 16:05:10,428 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 259 transitions. Word has length 71 [2022-12-14 16:05:10,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:05:10,428 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 259 transitions. [2022-12-14 16:05:10,429 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 16:05:10,429 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 259 transitions. [2022-12-14 16:05:10,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-14 16:05:10,430 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:05:10,430 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 16:05:10,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 16:05:10,431 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:05:10,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:05:10,431 INFO L85 PathProgramCache]: Analyzing trace with hash -601801573, now seen corresponding path program 1 times [2022-12-14 16:05:10,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:05:10,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666978327] [2022-12-14 16:05:10,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:05:10,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:05:10,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:05:10,497 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 16:05:10,497 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:05:10,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666978327] [2022-12-14 16:05:10,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666978327] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:05:10,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 16:05:10,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 16:05:10,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809230868] [2022-12-14 16:05:10,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:05:10,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 16:05:10,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:05:10,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 16:05:10,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 16:05:10,500 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 16:05:10,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:05:10,753 INFO L93 Difference]: Finished difference Result 431 states and 774 transitions. [2022-12-14 16:05:10,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 16:05:10,754 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 16:05:10,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:05:10,755 INFO L225 Difference]: With dead ends: 431 [2022-12-14 16:05:10,755 INFO L226 Difference]: Without dead ends: 287 [2022-12-14 16:05:10,756 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 16:05:10,757 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 16:05:10,757 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 16:05:10,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-12-14 16:05:10,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2022-12-14 16:05:10,772 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 16:05:10,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 468 transitions. [2022-12-14 16:05:10,773 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 468 transitions. Word has length 77 [2022-12-14 16:05:10,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:05:10,773 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 468 transitions. [2022-12-14 16:05:10,773 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 16:05:10,773 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 468 transitions. [2022-12-14 16:05:10,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-12-14 16:05:10,775 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:05:10,775 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 16:05:10,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 16:05:10,776 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:05:10,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:05:10,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1164135143, now seen corresponding path program 1 times [2022-12-14 16:05:10,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:05:10,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535868264] [2022-12-14 16:05:10,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:05:10,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:05:10,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:05:11,003 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 16:05:11,003 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:05:11,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535868264] [2022-12-14 16:05:11,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535868264] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:05:11,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 16:05:11,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 16:05:11,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598607962] [2022-12-14 16:05:11,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:05:11,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 16:05:11,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:05:11,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 16:05:11,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 16:05:11,006 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 16:05:11,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:05:11,360 INFO L93 Difference]: Finished difference Result 784 states and 1255 transitions. [2022-12-14 16:05:11,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 16:05:11,361 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 16:05:11,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:05:11,363 INFO L225 Difference]: With dead ends: 784 [2022-12-14 16:05:11,364 INFO L226 Difference]: Without dead ends: 429 [2022-12-14 16:05:11,365 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 16:05:11,366 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 70 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 16:05:11,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 74 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 16:05:11,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2022-12-14 16:05:11,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2022-12-14 16:05:11,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 428 states have (on average 1.3014018691588785) internal successors, (557), 428 states have internal predecessors, (557), 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 16:05:11,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 557 transitions. [2022-12-14 16:05:11,389 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 557 transitions. Word has length 78 [2022-12-14 16:05:11,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:05:11,390 INFO L495 AbstractCegarLoop]: Abstraction has 429 states and 557 transitions. [2022-12-14 16:05:11,390 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 16:05:11,390 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 557 transitions. [2022-12-14 16:05:11,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-12-14 16:05:11,394 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:05:11,394 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-12-14 16:05:11,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 16:05:11,394 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:05:11,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:05:11,395 INFO L85 PathProgramCache]: Analyzing trace with hash -771913106, now seen corresponding path program 1 times [2022-12-14 16:05:11,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:05:11,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320959346] [2022-12-14 16:05:11,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:05:11,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:05:11,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:05:11,521 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 16:05:11,522 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:05:11,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320959346] [2022-12-14 16:05:11,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320959346] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:05:11,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 16:05:11,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 16:05:11,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432729851] [2022-12-14 16:05:11,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:05:11,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 16:05:11,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:05:11,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 16:05:11,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 16:05:11,524 INFO L87 Difference]: Start difference. First operand 429 states and 557 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 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 16:05:11,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:05:11,724 INFO L93 Difference]: Finished difference Result 857 states and 1138 transitions. [2022-12-14 16:05:11,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 16:05:11,724 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 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 83 [2022-12-14 16:05:11,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:05:11,726 INFO L225 Difference]: With dead ends: 857 [2022-12-14 16:05:11,726 INFO L226 Difference]: Without dead ends: 500 [2022-12-14 16:05:11,727 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 16:05:11,728 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 69 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 16:05:11,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 41 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 16:05:11,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2022-12-14 16:05:11,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 500. [2022-12-14 16:05:11,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 499 states have (on average 1.282565130260521) internal successors, (640), 499 states have internal predecessors, (640), 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 16:05:11,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 640 transitions. [2022-12-14 16:05:11,745 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 640 transitions. Word has length 83 [2022-12-14 16:05:11,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:05:11,746 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 640 transitions. [2022-12-14 16:05:11,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 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 16:05:11,746 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 640 transitions. [2022-12-14 16:05:11,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-12-14 16:05:11,749 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:05:11,750 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 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] [2022-12-14 16:05:11,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 16:05:11,750 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:05:11,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:05:11,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1248264118, now seen corresponding path program 1 times [2022-12-14 16:05:11,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:05:11,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405289257] [2022-12-14 16:05:11,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:05:11,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:05:11,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:05:11,814 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 16:05:11,814 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:05:11,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405289257] [2022-12-14 16:05:11,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405289257] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:05:11,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 16:05:11,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 16:05:11,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207064700] [2022-12-14 16:05:11,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:05:11,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 16:05:11,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:05:11,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 16:05:11,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 16:05:11,815 INFO L87 Difference]: Start difference. First operand 500 states and 640 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 16:05:12,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:05:12,010 INFO L93 Difference]: Finished difference Result 1283 states and 1651 transitions. [2022-12-14 16:05:12,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 16:05:12,011 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 92 [2022-12-14 16:05:12,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:05:12,012 INFO L225 Difference]: With dead ends: 1283 [2022-12-14 16:05:12,012 INFO L226 Difference]: Without dead ends: 855 [2022-12-14 16:05:12,013 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 16:05:12,014 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 16:05:12,014 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 16:05:12,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2022-12-14 16:05:12,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 642. [2022-12-14 16:05:12,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 641 states have (on average 1.2776911076443058) internal successors, (819), 641 states have internal predecessors, (819), 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 16:05:12,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 819 transitions. [2022-12-14 16:05:12,027 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 819 transitions. Word has length 92 [2022-12-14 16:05:12,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:05:12,027 INFO L495 AbstractCegarLoop]: Abstraction has 642 states and 819 transitions. [2022-12-14 16:05:12,027 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 16:05:12,028 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 819 transitions. [2022-12-14 16:05:12,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-12-14 16:05:12,029 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:05:12,029 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 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] [2022-12-14 16:05:12,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 16:05:12,029 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:05:12,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:05:12,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1552485061, now seen corresponding path program 1 times [2022-12-14 16:05:12,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:05:12,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678002312] [2022-12-14 16:05:12,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:05:12,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:05:12,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:05:12,107 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 16:05:12,107 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:05:12,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678002312] [2022-12-14 16:05:12,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678002312] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:05:12,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 16:05:12,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 16:05:12,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029897005] [2022-12-14 16:05:12,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:05:12,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 16:05:12,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:05:12,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 16:05:12,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 16:05:12,108 INFO L87 Difference]: Start difference. First operand 642 states and 819 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 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 16:05:12,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:05:12,441 INFO L93 Difference]: Finished difference Result 1354 states and 1784 transitions. [2022-12-14 16:05:12,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 16:05:12,441 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 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 98 [2022-12-14 16:05:12,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:05:12,444 INFO L225 Difference]: With dead ends: 1354 [2022-12-14 16:05:12,444 INFO L226 Difference]: Without dead ends: 784 [2022-12-14 16:05:12,445 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 16:05:12,446 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 207 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 29 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 16:05:12,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 29 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 16:05:12,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2022-12-14 16:05:12,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 784. [2022-12-14 16:05:12,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 783 states have (on average 1.2669220945083015) internal successors, (992), 783 states have internal predecessors, (992), 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 16:05:12,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 992 transitions. [2022-12-14 16:05:12,468 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 992 transitions. Word has length 98 [2022-12-14 16:05:12,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:05:12,468 INFO L495 AbstractCegarLoop]: Abstraction has 784 states and 992 transitions. [2022-12-14 16:05:12,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 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 16:05:12,468 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 992 transitions. [2022-12-14 16:05:12,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-12-14 16:05:12,470 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:05:12,470 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:05:12,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 16:05:12,471 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:05:12,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:05:12,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1595249176, now seen corresponding path program 1 times [2022-12-14 16:05:12,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:05:12,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711343526] [2022-12-14 16:05:12,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:05:12,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:05:12,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:05:12,584 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 16:05:12,584 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:05:12,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711343526] [2022-12-14 16:05:12,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711343526] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:05:12,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 16:05:12,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 16:05:12,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279376139] [2022-12-14 16:05:12,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:05:12,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 16:05:12,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:05:12,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 16:05:12,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 16:05:12,585 INFO L87 Difference]: Start difference. First operand 784 states and 992 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 16:05:12,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:05:12,944 INFO L93 Difference]: Finished difference Result 1780 states and 2274 transitions. [2022-12-14 16:05:12,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 16:05:12,945 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 112 [2022-12-14 16:05:12,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:05:12,948 INFO L225 Difference]: With dead ends: 1780 [2022-12-14 16:05:12,949 INFO L226 Difference]: Without dead ends: 1068 [2022-12-14 16:05:12,950 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 16:05:12,951 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 117 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 40 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 16:05:12,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 40 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 16:05:12,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2022-12-14 16:05:12,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 997. [2022-12-14 16:05:12,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 996 states have (on average 1.251004016064257) internal successors, (1246), 996 states have internal predecessors, (1246), 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 16:05:12,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1246 transitions. [2022-12-14 16:05:12,986 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1246 transitions. Word has length 112 [2022-12-14 16:05:12,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:05:12,986 INFO L495 AbstractCegarLoop]: Abstraction has 997 states and 1246 transitions. [2022-12-14 16:05:12,987 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 16:05:12,987 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1246 transitions. [2022-12-14 16:05:12,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-12-14 16:05:12,989 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:05:12,989 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 16:05:12,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 16:05:12,990 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:05:12,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:05:12,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1252449629, now seen corresponding path program 1 times [2022-12-14 16:05:12,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:05:12,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396942330] [2022-12-14 16:05:12,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:05:12,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:05:13,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:05:13,126 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 16:05:13,126 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:05:13,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396942330] [2022-12-14 16:05:13,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396942330] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:05:13,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 16:05:13,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 16:05:13,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87985519] [2022-12-14 16:05:13,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:05:13,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 16:05:13,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:05:13,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 16:05:13,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 16:05:13,127 INFO L87 Difference]: Start difference. First operand 997 states and 1246 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 3 states have internal predecessors, (122), 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 16:05:13,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:05:13,395 INFO L93 Difference]: Finished difference Result 2064 states and 2571 transitions. [2022-12-14 16:05:13,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 16:05:13,395 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 3 states have internal predecessors, (122), 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 129 [2022-12-14 16:05:13,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:05:13,397 INFO L225 Difference]: With dead ends: 2064 [2022-12-14 16:05:13,397 INFO L226 Difference]: Without dead ends: 1139 [2022-12-14 16:05:13,398 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 16:05:13,399 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 166 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 16:05:13,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 28 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 16:05:13,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2022-12-14 16:05:13,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 997. [2022-12-14 16:05:13,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 996 states have (on average 1.2389558232931728) internal successors, (1234), 996 states have internal predecessors, (1234), 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 16:05:13,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1234 transitions. [2022-12-14 16:05:13,415 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1234 transitions. Word has length 129 [2022-12-14 16:05:13,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:05:13,415 INFO L495 AbstractCegarLoop]: Abstraction has 997 states and 1234 transitions. [2022-12-14 16:05:13,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 3 states have internal predecessors, (122), 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 16:05:13,416 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1234 transitions. [2022-12-14 16:05:13,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-12-14 16:05:13,417 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:05:13,417 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 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, 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 16:05:13,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 16:05:13,418 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:05:13,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:05:13,418 INFO L85 PathProgramCache]: Analyzing trace with hash 390811323, now seen corresponding path program 1 times [2022-12-14 16:05:13,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:05:13,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544610089] [2022-12-14 16:05:13,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:05:13,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:05:13,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:05:13,526 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-12-14 16:05:13,526 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:05:13,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544610089] [2022-12-14 16:05:13,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544610089] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:05:13,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 16:05:13,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 16:05:13,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426411369] [2022-12-14 16:05:13,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:05:13,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 16:05:13,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:05:13,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 16:05:13,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 16:05:13,528 INFO L87 Difference]: Start difference. First operand 997 states and 1234 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 16:05:13,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:05:13,743 INFO L93 Difference]: Finished difference Result 2135 states and 2651 transitions. [2022-12-14 16:05:13,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 16:05:13,743 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 172 [2022-12-14 16:05:13,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:05:13,748 INFO L225 Difference]: With dead ends: 2135 [2022-12-14 16:05:13,748 INFO L226 Difference]: Without dead ends: 1210 [2022-12-14 16:05:13,749 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 16:05:13,750 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 16:05:13,750 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 16:05:13,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2022-12-14 16:05:13,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1139. [2022-12-14 16:05:13,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 1138 states have (on average 1.2214411247803163) internal successors, (1390), 1138 states have internal predecessors, (1390), 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 16:05:13,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1390 transitions. [2022-12-14 16:05:13,774 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1390 transitions. Word has length 172 [2022-12-14 16:05:13,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:05:13,774 INFO L495 AbstractCegarLoop]: Abstraction has 1139 states and 1390 transitions. [2022-12-14 16:05:13,774 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 16:05:13,775 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1390 transitions. [2022-12-14 16:05:13,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-12-14 16:05:13,776 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:05:13,776 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-12-14 16:05:13,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 16:05:13,777 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:05:13,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:05:13,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1542400906, now seen corresponding path program 1 times [2022-12-14 16:05:13,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:05:13,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993013486] [2022-12-14 16:05:13,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:05:13,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:05:13,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:05:14,144 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 57 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:05:14,144 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:05:14,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993013486] [2022-12-14 16:05:14,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993013486] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:05:14,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844603915] [2022-12-14 16:05:14,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:05:14,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:05:14,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3855d5b-7d54-483d-a669-daff2903156e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:05:14,146 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3855d5b-7d54-483d-a669-daff2903156e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:05:14,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3855d5b-7d54-483d-a669-daff2903156e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 16:05:14,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:05:14,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 16:05:14,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:05:14,454 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2022-12-14 16:05:14,454 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 16:05:14,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844603915] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:05:14,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 16:05:14,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2022-12-14 16:05:14,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918206617] [2022-12-14 16:05:14,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:05:14,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 16:05:14,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:05:14,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 16:05:14,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-14 16:05:14,455 INFO L87 Difference]: Start difference. First operand 1139 states and 1390 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 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 16:05:14,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:05:14,665 INFO L93 Difference]: Finished difference Result 2277 states and 2779 transitions. [2022-12-14 16:05:14,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 16:05:14,666 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 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 175 [2022-12-14 16:05:14,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:05:14,668 INFO L225 Difference]: With dead ends: 2277 [2022-12-14 16:05:14,668 INFO L226 Difference]: Without dead ends: 1139 [2022-12-14 16:05:14,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-14 16:05:14,669 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 12 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 16:05:14,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 103 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 16:05:14,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2022-12-14 16:05:14,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1068. [2022-12-14 16:05:14,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1068 states, 1067 states have (on average 1.1855670103092784) internal successors, (1265), 1067 states have internal predecessors, (1265), 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 16:05:14,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1265 transitions. [2022-12-14 16:05:14,689 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1265 transitions. Word has length 175 [2022-12-14 16:05:14,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:05:14,689 INFO L495 AbstractCegarLoop]: Abstraction has 1068 states and 1265 transitions. [2022-12-14 16:05:14,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 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 16:05:14,689 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1265 transitions. [2022-12-14 16:05:14,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-12-14 16:05:14,692 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:05:14,692 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 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, 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 16:05:14,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3855d5b-7d54-483d-a669-daff2903156e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 16:05:14,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3855d5b-7d54-483d-a669-daff2903156e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-14 16:05:14,893 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:05:14,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:05:14,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1537690244, now seen corresponding path program 1 times [2022-12-14 16:05:14,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:05:14,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168977315] [2022-12-14 16:05:14,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:05:14,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:05:14,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:05:15,200 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 64 proven. 119 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-12-14 16:05:15,200 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:05:15,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168977315] [2022-12-14 16:05:15,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168977315] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:05:15,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975230665] [2022-12-14 16:05:15,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:05:15,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:05:15,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3855d5b-7d54-483d-a669-daff2903156e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:05:15,202 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3855d5b-7d54-483d-a669-daff2903156e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:05:15,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3855d5b-7d54-483d-a669-daff2903156e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 16:05:15,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:05:15,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 16:05:15,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:05:15,379 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-12-14 16:05:15,379 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 16:05:15,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975230665] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:05:15,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 16:05:15,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-12-14 16:05:15,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35994309] [2022-12-14 16:05:15,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:05:15,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 16:05:15,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:05:15,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 16:05:15,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-14 16:05:15,380 INFO L87 Difference]: Start difference. First operand 1068 states and 1265 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 16:05:15,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:05:15,546 INFO L93 Difference]: Finished difference Result 2419 states and 2846 transitions. [2022-12-14 16:05:15,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 16:05:15,546 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 194 [2022-12-14 16:05:15,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:05:15,548 INFO L225 Difference]: With dead ends: 2419 [2022-12-14 16:05:15,548 INFO L226 Difference]: Without dead ends: 1068 [2022-12-14 16:05:15,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-14 16:05:15,550 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 9 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 16:05:15,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 106 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 16:05:15,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2022-12-14 16:05:15,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 997. [2022-12-14 16:05:15,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 996 states have (on average 1.1275100401606426) internal successors, (1123), 996 states have internal predecessors, (1123), 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 16:05:15,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1123 transitions. [2022-12-14 16:05:15,563 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1123 transitions. Word has length 194 [2022-12-14 16:05:15,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:05:15,563 INFO L495 AbstractCegarLoop]: Abstraction has 997 states and 1123 transitions. [2022-12-14 16:05:15,563 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 16:05:15,563 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1123 transitions. [2022-12-14 16:05:15,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-12-14 16:05:15,565 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:05:15,565 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 16:05:15,571 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3855d5b-7d54-483d-a669-daff2903156e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 16:05:15,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3855d5b-7d54-483d-a669-daff2903156e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-14 16:05:15,766 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:05:15,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:05:15,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1994969092, now seen corresponding path program 1 times [2022-12-14 16:05:15,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:05:15,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947080035] [2022-12-14 16:05:15,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:05:15,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:05:15,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:05:16,043 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 69 proven. 124 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-12-14 16:05:16,043 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:05:16,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947080035] [2022-12-14 16:05:16,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947080035] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:05:16,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131192473] [2022-12-14 16:05:16,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:05:16,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:05:16,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3855d5b-7d54-483d-a669-daff2903156e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:05:16,045 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3855d5b-7d54-483d-a669-daff2903156e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:05:16,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3855d5b-7d54-483d-a669-daff2903156e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 16:05:16,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:05:16,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 16:05:16,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:05:16,199 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 16:05:16,199 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 16:05:16,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131192473] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:05:16,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 16:05:16,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-12-14 16:05:16,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622193711] [2022-12-14 16:05:16,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:05:16,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 16:05:16,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:05:16,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 16:05:16,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 16:05:16,200 INFO L87 Difference]: Start difference. First operand 997 states and 1123 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 16:05:16,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:05:16,379 INFO L93 Difference]: Finished difference Result 1993 states and 2263 transitions. [2022-12-14 16:05:16,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 16:05:16,379 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 16:05:16,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:05:16,384 INFO L225 Difference]: With dead ends: 1993 [2022-12-14 16:05:16,384 INFO L226 Difference]: Without dead ends: 1068 [2022-12-14 16:05:16,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 16:05:16,386 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 5 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 16:05:16,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 97 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 16:05:16,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2022-12-14 16:05:16,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 926. [2022-12-14 16:05:16,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 925 states have (on average 1.1156756756756756) internal successors, (1032), 925 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 16:05:16,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1032 transitions. [2022-12-14 16:05:16,402 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1032 transitions. Word has length 199 [2022-12-14 16:05:16,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:05:16,402 INFO L495 AbstractCegarLoop]: Abstraction has 926 states and 1032 transitions. [2022-12-14 16:05:16,403 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 16:05:16,403 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1032 transitions. [2022-12-14 16:05:16,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-12-14 16:05:16,405 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:05:16,405 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 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, 1] [2022-12-14 16:05:16,411 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3855d5b-7d54-483d-a669-daff2903156e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 16:05:16,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3855d5b-7d54-483d-a669-daff2903156e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-14 16:05:16,605 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:05:16,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:05:16,606 INFO L85 PathProgramCache]: Analyzing trace with hash 290641695, now seen corresponding path program 1 times [2022-12-14 16:05:16,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:05:16,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974811516] [2022-12-14 16:05:16,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:05:16,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:05:16,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:05:16,933 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 201 proven. 127 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-12-14 16:05:16,933 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:05:16,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974811516] [2022-12-14 16:05:16,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974811516] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:05:16,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943829997] [2022-12-14 16:05:16,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:05:16,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:05:16,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3855d5b-7d54-483d-a669-daff2903156e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:05:16,934 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3855d5b-7d54-483d-a669-daff2903156e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:05:16,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3855d5b-7d54-483d-a669-daff2903156e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 16:05:17,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:05:17,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 16:05:17,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:05:17,096 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 165 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-12-14 16:05:17,096 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 16:05:17,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943829997] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:05:17,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 16:05:17,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2022-12-14 16:05:17,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718483507] [2022-12-14 16:05:17,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:05:17,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 16:05:17,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:05:17,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 16:05:17,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 16:05:17,098 INFO L87 Difference]: Start difference. First operand 926 states and 1032 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 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 16:05:17,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:05:17,295 INFO L93 Difference]: Finished difference Result 1991 states and 2234 transitions. [2022-12-14 16:05:17,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 16:05:17,295 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 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 237 [2022-12-14 16:05:17,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:05:17,295 INFO L225 Difference]: With dead ends: 1991 [2022-12-14 16:05:17,295 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 16:05:17,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 16:05:17,297 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 2 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 16:05:17,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 110 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 16:05:17,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 16:05:17,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 16:05:17,297 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 16:05:17,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 16:05:17,298 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 237 [2022-12-14 16:05:17,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:05:17,298 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 16:05:17,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 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 16:05:17,298 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 16:05:17,298 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 16:05:17,300 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 16:05:17,306 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3855d5b-7d54-483d-a669-daff2903156e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 16:05:17,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3855d5b-7d54-483d-a669-daff2903156e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-14 16:05:17,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-14 16:05:18,200 INFO L899 garLoopResultBuilder]: For program point L102(lines 102 400) no Hoare annotation was computed. [2022-12-14 16:05:18,200 INFO L899 garLoopResultBuilder]: For program point L598(line 598) no Hoare annotation was computed. [2022-12-14 16:05:18,200 INFO L899 garLoopResultBuilder]: For program point L334(lines 334 400) no Hoare annotation was computed. [2022-12-14 16:05:18,200 INFO L899 garLoopResultBuilder]: For program point L302(lines 302 400) no Hoare annotation was computed. [2022-12-14 16:05:18,200 INFO L899 garLoopResultBuilder]: For program point L170(lines 170 400) no Hoare annotation was computed. [2022-12-14 16:05:18,200 INFO L899 garLoopResultBuilder]: For program point L204(lines 204 400) no Hoare annotation was computed. [2022-12-14 16:05:18,201 INFO L899 garLoopResultBuilder]: For program point L72(lines 72 400) no Hoare annotation was computed. [2022-12-14 16:05:18,201 INFO L899 garLoopResultBuilder]: For program point L271(lines 271 400) no Hoare annotation was computed. [2022-12-14 16:05:18,201 INFO L899 garLoopResultBuilder]: For program point L139(lines 139 400) no Hoare annotation was computed. [2022-12-14 16:05:18,201 INFO L899 garLoopResultBuilder]: For program point L371(lines 371 400) no Hoare annotation was computed. [2022-12-14 16:05:18,201 INFO L899 garLoopResultBuilder]: For program point L107(lines 107 400) no Hoare annotation was computed. [2022-12-14 16:05:18,201 INFO L899 garLoopResultBuilder]: For program point L41(lines 41 400) no Hoare annotation was computed. [2022-12-14 16:05:18,201 INFO L899 garLoopResultBuilder]: For program point L339(lines 339 400) no Hoare annotation was computed. [2022-12-14 16:05:18,201 INFO L899 garLoopResultBuilder]: For program point L207(lines 207 400) no Hoare annotation was computed. [2022-12-14 16:05:18,201 INFO L899 garLoopResultBuilder]: For program point L75(lines 75 400) no Hoare annotation was computed. [2022-12-14 16:05:18,201 INFO L899 garLoopResultBuilder]: For program point L373(lines 373 400) no Hoare annotation was computed. [2022-12-14 16:05:18,201 INFO L899 garLoopResultBuilder]: For program point L241(lines 241 400) no Hoare annotation was computed. [2022-12-14 16:05:18,201 INFO L899 garLoopResultBuilder]: For program point L175(lines 175 400) no Hoare annotation was computed. [2022-12-14 16:05:18,201 INFO L899 garLoopResultBuilder]: For program point L275(lines 275 400) no Hoare annotation was computed. [2022-12-14 16:05:18,202 INFO L899 garLoopResultBuilder]: For program point L375(lines 375 400) no Hoare annotation was computed. [2022-12-14 16:05:18,202 INFO L899 garLoopResultBuilder]: For program point L309(lines 309 400) no Hoare annotation was computed. [2022-12-14 16:05:18,202 INFO L899 garLoopResultBuilder]: For program point L45(lines 45 400) no Hoare annotation was computed. [2022-12-14 16:05:18,202 INFO L899 garLoopResultBuilder]: For program point L343(lines 343 400) no Hoare annotation was computed. [2022-12-14 16:05:18,202 INFO L899 garLoopResultBuilder]: For program point L112(lines 112 400) no Hoare annotation was computed. [2022-12-14 16:05:18,202 INFO L899 garLoopResultBuilder]: For program point L278(lines 278 400) no Hoare annotation was computed. [2022-12-14 16:05:18,202 INFO L899 garLoopResultBuilder]: For program point L146(lines 146 400) no Hoare annotation was computed. [2022-12-14 16:05:18,202 INFO L899 garLoopResultBuilder]: For program point L213(lines 213 400) no Hoare annotation was computed. [2022-12-14 16:05:18,202 INFO L899 garLoopResultBuilder]: For program point L82(lines 82 400) no Hoare annotation was computed. [2022-12-14 16:05:18,202 INFO L899 garLoopResultBuilder]: For program point L545-1(lines 40 585) no Hoare annotation was computed. [2022-12-14 16:05:18,202 INFO L899 garLoopResultBuilder]: For program point L347(lines 347 400) no Hoare annotation was computed. [2022-12-14 16:05:18,202 INFO L899 garLoopResultBuilder]: For program point L248(lines 248 400) no Hoare annotation was computed. [2022-12-14 16:05:18,203 INFO L899 garLoopResultBuilder]: For program point L183(lines 183 400) no Hoare annotation was computed. [2022-12-14 16:05:18,203 INFO L899 garLoopResultBuilder]: For program point L150(lines 150 400) no Hoare annotation was computed. [2022-12-14 16:05:18,203 INFO L899 garLoopResultBuilder]: For program point L382(lines 382 400) no Hoare annotation was computed. [2022-12-14 16:05:18,203 INFO L899 garLoopResultBuilder]: For program point L316(lines 316 400) no Hoare annotation was computed. [2022-12-14 16:05:18,203 INFO L899 garLoopResultBuilder]: For program point L283(lines 283 400) no Hoare annotation was computed. [2022-12-14 16:05:18,203 INFO L899 garLoopResultBuilder]: For program point L118(lines 118 400) no Hoare annotation was computed. [2022-12-14 16:05:18,203 INFO L899 garLoopResultBuilder]: For program point L548-1(lines 40 585) no Hoare annotation was computed. [2022-12-14 16:05:18,203 INFO L899 garLoopResultBuilder]: For program point L218(lines 218 400) no Hoare annotation was computed. [2022-12-14 16:05:18,203 INFO L899 garLoopResultBuilder]: For program point L53(lines 53 400) no Hoare annotation was computed. [2022-12-14 16:05:18,203 INFO L899 garLoopResultBuilder]: For program point L549(line 549) no Hoare annotation was computed. [2022-12-14 16:05:18,203 INFO L899 garLoopResultBuilder]: For program point L154(lines 154 400) no Hoare annotation was computed. [2022-12-14 16:05:18,203 INFO L899 garLoopResultBuilder]: For program point L188(lines 188 400) no Hoare annotation was computed. [2022-12-14 16:05:18,203 INFO L899 garLoopResultBuilder]: For program point L387(lines 387 400) no Hoare annotation was computed. [2022-12-14 16:05:18,204 INFO L899 garLoopResultBuilder]: For program point L288(lines 288 400) no Hoare annotation was computed. [2022-12-14 16:05:18,204 INFO L899 garLoopResultBuilder]: For program point L255(lines 255 400) no Hoare annotation was computed. [2022-12-14 16:05:18,204 INFO L899 garLoopResultBuilder]: For program point L90(lines 90 400) no Hoare annotation was computed. [2022-12-14 16:05:18,204 INFO L899 garLoopResultBuilder]: For program point L355(lines 355 400) no Hoare annotation was computed. [2022-12-14 16:05:18,204 INFO L899 garLoopResultBuilder]: For program point L322(lines 322 400) no Hoare annotation was computed. [2022-12-14 16:05:18,204 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-12-14 16:05:18,204 INFO L899 garLoopResultBuilder]: For program point L124(lines 124 400) no Hoare annotation was computed. [2022-12-14 16:05:18,204 INFO L902 garLoopResultBuilder]: At program point L587(lines 587 604) the Hoare annotation is: true [2022-12-14 16:05:18,204 INFO L899 garLoopResultBuilder]: For program point L224(lines 224 400) no Hoare annotation was computed. [2022-12-14 16:05:18,204 INFO L899 garLoopResultBuilder]: For program point L158(lines 158 400) no Hoare annotation was computed. [2022-12-14 16:05:18,204 INFO L899 garLoopResultBuilder]: For program point L59(lines 59 400) no Hoare annotation was computed. [2022-12-14 16:05:18,204 INFO L899 garLoopResultBuilder]: For program point L94(lines 94 400) no Hoare annotation was computed. [2022-12-14 16:05:18,204 INFO L899 garLoopResultBuilder]: For program point L392(lines 392 400) no Hoare annotation was computed. [2022-12-14 16:05:18,205 INFO L899 garLoopResultBuilder]: For program point L326(lines 326 400) no Hoare annotation was computed. [2022-12-14 16:05:18,205 INFO L899 garLoopResultBuilder]: For program point L260(lines 260 400) no Hoare annotation was computed. [2022-12-14 16:05:18,205 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2022-12-14 16:05:18,205 INFO L899 garLoopResultBuilder]: For program point L228(lines 228 400) no Hoare annotation was computed. [2022-12-14 16:05:18,205 INFO L899 garLoopResultBuilder]: For program point L162(lines 162 400) no Hoare annotation was computed. [2022-12-14 16:05:18,205 INFO L899 garLoopResultBuilder]: For program point L129(lines 129 400) no Hoare annotation was computed. [2022-12-14 16:05:18,205 INFO L899 garLoopResultBuilder]: For program point L328(lines 328 400) no Hoare annotation was computed. [2022-12-14 16:05:18,205 INFO L899 garLoopResultBuilder]: For program point L196(lines 196 400) no Hoare annotation was computed. [2022-12-14 16:05:18,205 INFO L899 garLoopResultBuilder]: For program point L64(lines 64 400) no Hoare annotation was computed. [2022-12-14 16:05:18,206 INFO L895 garLoopResultBuilder]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse0 (<= ~a20~0 0)) (.cse4 (<= 15 ~a8~0)) (.cse2 (<= ~a17~0 0)) (.cse5 (<= ~a8~0 13)) (.cse9 (<= ~a16~0 5)) (.cse1 (= ~a16~0 6)) (.cse10 (= ~a12~0 8)) (.cse3 (= ~a21~0 1)) (.cse6 (= ~a17~0 1)) (.cse7 (<= ~a16~0 4)) (.cse8 (= ~a20~0 1))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse0 .cse5 .cse6 .cse7) (and .cse5 .cse7 .cse8) (and .cse0 .cse1 .cse3 .cse6 .cse4) (and .cse0 .cse2 .cse3 .cse9) (and .cse10 .cse3 .cse6 .cse9 .cse8 .cse4) (and .cse2 .cse3 .cse9 .cse8) (and .cse2 .cse3 .cse8 .cse4) (and .cse5 .cse6 .cse8) (and .cse0 .cse5 .cse3 .cse9) (and .cse0 .cse3 .cse6 .cse9 .cse4) (and .cse5 .cse2 .cse8) (and .cse5 .cse3 .cse9 .cse8) (and .cse10 .cse1 .cse3 .cse6 .cse8) (and .cse10 .cse3 .cse6 .cse7 .cse8))) [2022-12-14 16:05:18,206 INFO L899 garLoopResultBuilder]: For program point L296(lines 296 400) no Hoare annotation was computed. [2022-12-14 16:05:18,206 INFO L895 garLoopResultBuilder]: At program point calculate_output_returnLabel#1(lines 40 585) the Hoare annotation is: (let ((.cse0 (<= ~a20~0 0)) (.cse4 (<= 15 ~a8~0)) (.cse2 (<= ~a17~0 0)) (.cse5 (<= ~a8~0 13)) (.cse9 (<= ~a16~0 5)) (.cse1 (= ~a16~0 6)) (.cse10 (= ~a12~0 8)) (.cse3 (= ~a21~0 1)) (.cse6 (= ~a17~0 1)) (.cse7 (<= ~a16~0 4)) (.cse8 (= ~a20~0 1))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse0 .cse5 .cse6 .cse7) (and .cse5 .cse7 .cse8) (and .cse0 .cse1 .cse3 .cse6 .cse4) (and .cse0 .cse2 .cse3 .cse9) (and .cse10 .cse3 .cse6 .cse9 .cse8 .cse4) (and .cse2 .cse3 .cse9 .cse8) (and .cse2 .cse3 .cse8 .cse4) (and .cse5 .cse6 .cse8) (and .cse0 .cse5 .cse3 .cse9) (and .cse0 .cse3 .cse6 .cse9 .cse4) (and .cse5 .cse2 .cse8) (and .cse5 .cse3 .cse9 .cse8) (and .cse10 .cse1 .cse3 .cse6 .cse8) (and .cse10 .cse3 .cse6 .cse7 .cse8))) [2022-12-14 16:05:18,206 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 549) no Hoare annotation was computed. [2022-12-14 16:05:18,206 INFO L899 garLoopResultBuilder]: For program point L363(lines 363 400) no Hoare annotation was computed. [2022-12-14 16:05:18,206 INFO L899 garLoopResultBuilder]: For program point L199(lines 199 400) no Hoare annotation was computed. [2022-12-14 16:05:18,207 INFO L899 garLoopResultBuilder]: For program point L365(lines 365 400) no Hoare annotation was computed. [2022-12-14 16:05:18,207 INFO L899 garLoopResultBuilder]: For program point L266(lines 266 400) no Hoare annotation was computed. [2022-12-14 16:05:18,207 INFO L899 garLoopResultBuilder]: For program point L233(lines 233 400) no Hoare annotation was computed. [2022-12-14 16:05:18,207 INFO L899 garLoopResultBuilder]: For program point L134(lines 134 400) no Hoare annotation was computed. [2022-12-14 16:05:18,210 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 16:05:18,211 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 16:05:18,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 04:05:18 BoogieIcfgContainer [2022-12-14 16:05:18,225 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 16:05:18,226 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 16:05:18,226 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 16:05:18,226 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 16:05:18,226 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:05:09" (3/4) ... [2022-12-14 16:05:18,228 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 16:05:18,239 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 110 nodes and edges [2022-12-14 16:05:18,240 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2022-12-14 16:05:18,240 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2022-12-14 16:05:18,241 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 16:05:18,307 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3855d5b-7d54-483d-a669-daff2903156e/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 16:05:18,307 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 16:05:18,307 INFO L158 Benchmark]: Toolchain (without parser) took 10116.76ms. Allocated memory was 125.8MB in the beginning and 318.8MB in the end (delta: 192.9MB). Free memory was 88.5MB in the beginning and 254.8MB in the end (delta: -166.3MB). Peak memory consumption was 28.1MB. Max. memory is 16.1GB. [2022-12-14 16:05:18,307 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 125.8MB. Free memory is still 94.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 16:05:18,308 INFO L158 Benchmark]: CACSL2BoogieTranslator took 368.91ms. Allocated memory is still 125.8MB. Free memory was 88.2MB in the beginning and 60.6MB in the end (delta: 27.5MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-12-14 16:05:18,308 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.13ms. Allocated memory was 125.8MB in the beginning and 151.0MB in the end (delta: 25.2MB). Free memory was 60.6MB in the beginning and 119.9MB in the end (delta: -59.3MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. [2022-12-14 16:05:18,308 INFO L158 Benchmark]: Boogie Preprocessor took 38.94ms. Allocated memory is still 151.0MB. Free memory was 119.9MB in the beginning and 115.0MB in the end (delta: 4.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-14 16:05:18,308 INFO L158 Benchmark]: RCFGBuilder took 983.99ms. Allocated memory is still 151.0MB. Free memory was 115.0MB in the beginning and 90.3MB in the end (delta: 24.7MB). Peak memory consumption was 51.4MB. Max. memory is 16.1GB. [2022-12-14 16:05:18,309 INFO L158 Benchmark]: TraceAbstraction took 8569.20ms. Allocated memory was 151.0MB in the beginning and 318.8MB in the end (delta: 167.8MB). Free memory was 89.2MB in the beginning and 266.5MB in the end (delta: -177.3MB). Peak memory consumption was 165.8MB. Max. memory is 16.1GB. [2022-12-14 16:05:18,309 INFO L158 Benchmark]: Witness Printer took 81.10ms. Allocated memory is still 318.8MB. Free memory was 266.5MB in the beginning and 254.8MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-14 16:05:18,311 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 125.8MB. Free memory is still 94.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 368.91ms. Allocated memory is still 125.8MB. Free memory was 88.2MB in the beginning and 60.6MB in the end (delta: 27.5MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 70.13ms. Allocated memory was 125.8MB in the beginning and 151.0MB in the end (delta: 25.2MB). Free memory was 60.6MB in the beginning and 119.9MB in the end (delta: -59.3MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.94ms. Allocated memory is still 151.0MB. Free memory was 119.9MB in the beginning and 115.0MB in the end (delta: 4.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 983.99ms. Allocated memory is still 151.0MB. Free memory was 115.0MB in the beginning and 90.3MB in the end (delta: 24.7MB). Peak memory consumption was 51.4MB. Max. memory is 16.1GB. * TraceAbstraction took 8569.20ms. Allocated memory was 151.0MB in the beginning and 318.8MB in the end (delta: 167.8MB). Free memory was 89.2MB in the beginning and 266.5MB in the end (delta: -177.3MB). Peak memory consumption was 165.8MB. Max. memory is 16.1GB. * Witness Printer took 81.10ms. Allocated memory is still 318.8MB. Free memory was 266.5MB in the beginning and 254.8MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 549]: 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: 8.5s, OverallIterations: 13, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 865 SdHoareTripleChecker+Valid, 2.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 865 mSDsluCounter, 817 SdHoareTripleChecker+Invalid, 2.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 61 mSDsCounter, 721 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3068 IncrementalHoareTripleChecker+Invalid, 3789 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 721 mSolverCounterUnsat, 756 mSDtfsCounter, 3068 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 843 GetRequests, 812 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1139occurred in iteration=9, InterpolantAutomatonStates: 43, 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, 13 MinimizatonAttempts, 781 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 47 NumberOfFragments, 417 HoareAnnotationTreeSize, 3 FomulaSimplifications, 228 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 3 FomulaSimplificationsInter, 2196 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 2522 NumberOfCodeBlocks, 2522 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 2505 ConstructedInterpolants, 0 QuantifiedInterpolants, 13640 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1795 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 17 InterpolantComputations, 13 PerfectInterpolantSequences, 1820/2288 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: (((((((((((((((((a20 <= 0 && a16 == 6) && a17 <= 0) && a21 == 1) && 15 <= a8) || (((a20 <= 0 && a8 <= 13) && a17 == 1) && a16 <= 4)) || ((a8 <= 13 && a16 <= 4) && a20 == 1)) || ((((a20 <= 0 && a16 == 6) && a21 == 1) && a17 == 1) && 15 <= a8)) || (((a20 <= 0 && a17 <= 0) && a21 == 1) && a16 <= 5)) || (((((a12 == 8 && a21 == 1) && a17 == 1) && a16 <= 5) && a20 == 1) && 15 <= a8)) || (((a17 <= 0 && a21 == 1) && a16 <= 5) && a20 == 1)) || (((a17 <= 0 && a21 == 1) && a20 == 1) && 15 <= a8)) || ((a8 <= 13 && a17 == 1) && a20 == 1)) || (((a20 <= 0 && a8 <= 13) && a21 == 1) && a16 <= 5)) || ((((a20 <= 0 && a21 == 1) && a17 == 1) && a16 <= 5) && 15 <= a8)) || ((a8 <= 13 && a17 <= 0) && a20 == 1)) || (((a8 <= 13 && a21 == 1) && a16 <= 5) && a20 == 1)) || ((((a12 == 8 && a16 == 6) && a21 == 1) && a17 == 1) && a20 == 1)) || ((((a12 == 8 && a21 == 1) && a17 == 1) && a16 <= 4) && a20 == 1) - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: (((((((((((((((((a20 <= 0 && a16 == 6) && a17 <= 0) && a21 == 1) && 15 <= a8) || (((a20 <= 0 && a8 <= 13) && a17 == 1) && a16 <= 4)) || ((a8 <= 13 && a16 <= 4) && a20 == 1)) || ((((a20 <= 0 && a16 == 6) && a21 == 1) && a17 == 1) && 15 <= a8)) || (((a20 <= 0 && a17 <= 0) && a21 == 1) && a16 <= 5)) || (((((a12 == 8 && a21 == 1) && a17 == 1) && a16 <= 5) && a20 == 1) && 15 <= a8)) || (((a17 <= 0 && a21 == 1) && a16 <= 5) && a20 == 1)) || (((a17 <= 0 && a21 == 1) && a20 == 1) && 15 <= a8)) || ((a8 <= 13 && a17 == 1) && a20 == 1)) || (((a20 <= 0 && a8 <= 13) && a21 == 1) && a16 <= 5)) || ((((a20 <= 0 && a21 == 1) && a17 == 1) && a16 <= 5) && 15 <= a8)) || ((a8 <= 13 && a17 <= 0) && a20 == 1)) || (((a8 <= 13 && a21 == 1) && a16 <= 5) && a20 == 1)) || ((((a12 == 8 && a16 == 6) && a21 == 1) && a17 == 1) && a20 == 1)) || ((((a12 == 8 && a21 == 1) && a17 == 1) && a16 <= 4) && a20 == 1) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-12-14 16:05:18,325 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3855d5b-7d54-483d-a669-daff2903156e/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