./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label55.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a40a57b-85ce-4776-88b2-d313bd4af20b/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a40a57b-85ce-4776-88b2-d313bd4af20b/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a40a57b-85ce-4776-88b2-d313bd4af20b/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a40a57b-85ce-4776-88b2-d313bd4af20b/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label55.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a40a57b-85ce-4776-88b2-d313bd4af20b/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a40a57b-85ce-4776-88b2-d313bd4af20b/bin/utaipan-9zjyvhn0QE --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 faf917cd0a1eaa2ad9dee590b3f946754d69847d6ec93638a854081a172b37da ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 09:50:49,019 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 09:50:49,021 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 09:50:49,051 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 09:50:49,051 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 09:50:49,053 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 09:50:49,055 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 09:50:49,057 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 09:50:49,059 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 09:50:49,061 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 09:50:49,062 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 09:50:49,063 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 09:50:49,064 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 09:50:49,065 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 09:50:49,067 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 09:50:49,069 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 09:50:49,070 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 09:50:49,071 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 09:50:49,073 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 09:50:49,076 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 09:50:49,078 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 09:50:49,087 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 09:50:49,089 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 09:50:49,091 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 09:50:49,098 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 09:50:49,099 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 09:50:49,100 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 09:50:49,104 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 09:50:49,108 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 09:50:49,109 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 09:50:49,109 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 09:50:49,110 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 09:50:49,110 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 09:50:49,111 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 09:50:49,112 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 09:50:49,112 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 09:50:49,113 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 09:50:49,113 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 09:50:49,114 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 09:50:49,115 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 09:50:49,116 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 09:50:49,117 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a40a57b-85ce-4776-88b2-d313bd4af20b/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 09:50:49,159 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 09:50:49,159 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 09:50:49,160 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 09:50:49,161 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 09:50:49,161 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 09:50:49,161 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 09:50:49,161 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 09:50:49,161 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 09:50:49,165 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 09:50:49,165 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 09:50:49,166 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 09:50:49,167 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 09:50:49,167 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 09:50:49,167 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 09:50:49,167 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 09:50:49,168 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 09:50:49,168 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 09:50:49,169 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 09:50:49,169 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 09:50:49,169 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 09:50:49,169 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 09:50:49,170 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 09:50:49,170 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 09:50:49,170 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 09:50:49,170 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 09:50:49,171 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 09:50:49,171 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 09:50:49,171 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 09:50:49,171 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 09:50:49,173 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 09:50:49,173 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:50:49,173 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 09:50:49,174 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 09:50:49,174 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 09:50:49,174 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 09:50:49,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 09:50:49,175 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 09:50:49,175 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 09:50:49,175 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 09:50:49,175 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a40a57b-85ce-4776-88b2-d313bd4af20b/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a40a57b-85ce-4776-88b2-d313bd4af20b/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> faf917cd0a1eaa2ad9dee590b3f946754d69847d6ec93638a854081a172b37da [2021-10-24 09:50:49,492 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 09:50:49,513 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 09:50:49,515 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 09:50:49,517 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 09:50:49,518 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 09:50:49,518 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a40a57b-85ce-4776-88b2-d313bd4af20b/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/eca-rers2012/Problem01_label55.c [2021-10-24 09:50:49,596 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a40a57b-85ce-4776-88b2-d313bd4af20b/bin/utaipan-9zjyvhn0QE/data/1b5a78fea/8253bf921c9d46dcbb79d7b0a3fdc3cf/FLAGbf16dbdff [2021-10-24 09:50:50,269 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 09:50:50,270 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a40a57b-85ce-4776-88b2-d313bd4af20b/sv-benchmarks/c/eca-rers2012/Problem01_label55.c [2021-10-24 09:50:50,284 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a40a57b-85ce-4776-88b2-d313bd4af20b/bin/utaipan-9zjyvhn0QE/data/1b5a78fea/8253bf921c9d46dcbb79d7b0a3fdc3cf/FLAGbf16dbdff [2021-10-24 09:50:50,492 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a40a57b-85ce-4776-88b2-d313bd4af20b/bin/utaipan-9zjyvhn0QE/data/1b5a78fea/8253bf921c9d46dcbb79d7b0a3fdc3cf [2021-10-24 09:50:50,495 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 09:50:50,496 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 09:50:50,500 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 09:50:50,500 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 09:50:50,508 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 09:50:50,509 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:50:50" (1/1) ... [2021-10-24 09:50:50,510 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c3c00ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:50:50, skipping insertion in model container [2021-10-24 09:50:50,510 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:50:50" (1/1) ... [2021-10-24 09:50:50,519 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 09:50:50,588 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 09:50:51,041 WARN L228 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_0a40a57b-85ce-4776-88b2-d313bd4af20b/sv-benchmarks/c/eca-rers2012/Problem01_label55.c[19349,19362] [2021-10-24 09:50:51,071 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:50:51,080 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 09:50:51,192 WARN L228 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_0a40a57b-85ce-4776-88b2-d313bd4af20b/sv-benchmarks/c/eca-rers2012/Problem01_label55.c[19349,19362] [2021-10-24 09:50:51,208 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:50:51,225 INFO L208 MainTranslator]: Completed translation [2021-10-24 09:50:51,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:50:51 WrapperNode [2021-10-24 09:50:51,226 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 09:50:51,227 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 09:50:51,227 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 09:50:51,227 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 09:50:51,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:50:51" (1/1) ... [2021-10-24 09:50:51,260 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:50:51" (1/1) ... [2021-10-24 09:50:51,330 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 09:50:51,331 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 09:50:51,331 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 09:50:51,331 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 09:50:51,341 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:50:51" (1/1) ... [2021-10-24 09:50:51,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:50:51" (1/1) ... [2021-10-24 09:50:51,355 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:50:51" (1/1) ... [2021-10-24 09:50:51,355 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:50:51" (1/1) ... [2021-10-24 09:50:51,395 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:50:51" (1/1) ... [2021-10-24 09:50:51,417 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:50:51" (1/1) ... [2021-10-24 09:50:51,421 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:50:51" (1/1) ... [2021-10-24 09:50:51,439 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 09:50:51,440 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 09:50:51,440 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 09:50:51,440 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 09:50:51,442 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:50:51" (1/1) ... [2021-10-24 09:50:51,449 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:50:51,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a40a57b-85ce-4776-88b2-d313bd4af20b/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:50:51,477 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a40a57b-85ce-4776-88b2-d313bd4af20b/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 09:50:51,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a40a57b-85ce-4776-88b2-d313bd4af20b/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 09:50:51,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 09:50:51,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 09:50:51,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 09:50:51,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 09:50:53,423 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 09:50:53,424 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-24 09:50:53,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:50:53 BoogieIcfgContainer [2021-10-24 09:50:53,427 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 09:50:53,429 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 09:50:53,429 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 09:50:53,433 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 09:50:53,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:50:50" (1/3) ... [2021-10-24 09:50:53,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d2e3be3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:50:53, skipping insertion in model container [2021-10-24 09:50:53,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:50:51" (2/3) ... [2021-10-24 09:50:53,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d2e3be3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:50:53, skipping insertion in model container [2021-10-24 09:50:53,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:50:53" (3/3) ... [2021-10-24 09:50:53,438 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label55.c [2021-10-24 09:50:53,443 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 09:50:53,444 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-24 09:50:53,503 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 09:50:53,512 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-10-24 09:50:53,512 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-24 09:50:53,533 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) [2021-10-24 09:50:53,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-10-24 09:50:53,543 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:50:53,544 INFO L512 BasicCegarLoop]: 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] [2021-10-24 09:50:53,544 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:50:53,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:50:53,560 INFO L82 PathProgramCache]: Analyzing trace with hash 379024775, now seen corresponding path program 1 times [2021-10-24 09:50:53,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:50:53,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938205335] [2021-10-24 09:50:53,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:50:53,573 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:50:53,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:50:53,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:50:53,937 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:50:53,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938205335] [2021-10-24 09:50:53,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938205335] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:50:53,939 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:50:53,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 09:50:53,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054430472] [2021-10-24 09:50:53,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 09:50:53,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:50:53,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 09:50:53,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:50:53,969 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) [2021-10-24 09:50:54,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:50:54,446 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2021-10-24 09:50:54,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 09:50:54,448 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 [2021-10-24 09:50:54,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:50:54,466 INFO L225 Difference]: With dead ends: 224 [2021-10-24 09:50:54,466 INFO L226 Difference]: Without dead ends: 145 [2021-10-24 09:50:54,470 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:50:54,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-10-24 09:50:54,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2021-10-24 09:50:54,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.8819444444444444) internal successors, (271), 144 states have internal predecessors, (271), 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) [2021-10-24 09:50:54,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 271 transitions. [2021-10-24 09:50:54,541 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 271 transitions. Word has length 71 [2021-10-24 09:50:54,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:50:54,543 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 271 transitions. [2021-10-24 09:50:54,543 INFO L471 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) [2021-10-24 09:50:54,543 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 271 transitions. [2021-10-24 09:50:54,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-10-24 09:50:54,549 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:50:54,549 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:50:54,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-24 09:50:54,550 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:50:54,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:50:54,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1708131775, now seen corresponding path program 1 times [2021-10-24 09:50:54,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:50:54,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368933230] [2021-10-24 09:50:54,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:50:54,554 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:50:54,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:50:54,646 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:50:54,646 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:50:54,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368933230] [2021-10-24 09:50:54,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368933230] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:50:54,647 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:50:54,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 09:50:54,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310904767] [2021-10-24 09:50:54,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 09:50:54,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:50:54,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 09:50:54,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:50:54,650 INFO L87 Difference]: Start difference. First operand 145 states and 271 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:50:55,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:50:55,051 INFO L93 Difference]: Finished difference Result 431 states and 810 transitions. [2021-10-24 09:50:55,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 09:50:55,052 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-10-24 09:50:55,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:50:55,055 INFO L225 Difference]: With dead ends: 431 [2021-10-24 09:50:55,055 INFO L226 Difference]: Without dead ends: 287 [2021-10-24 09:50:55,056 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:50:55,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-10-24 09:50:55,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2021-10-24 09:50:55,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.7622377622377623) internal successors, (504), 286 states have internal predecessors, (504), 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) [2021-10-24 09:50:55,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 504 transitions. [2021-10-24 09:50:55,076 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 504 transitions. Word has length 76 [2021-10-24 09:50:55,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:50:55,076 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 504 transitions. [2021-10-24 09:50:55,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:50:55,077 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 504 transitions. [2021-10-24 09:50:55,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-10-24 09:50:55,080 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:50:55,080 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:50:55,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-24 09:50:55,081 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:50:55,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:50:55,081 INFO L82 PathProgramCache]: Analyzing trace with hash 714043494, now seen corresponding path program 1 times [2021-10-24 09:50:55,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:50:55,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268910530] [2021-10-24 09:50:55,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:50:55,082 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:50:55,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:50:55,167 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:50:55,167 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:50:55,168 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268910530] [2021-10-24 09:50:55,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268910530] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:50:55,168 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:50:55,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 09:50:55,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055900185] [2021-10-24 09:50:55,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 09:50:55,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:50:55,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 09:50:55,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:50:55,170 INFO L87 Difference]: Start difference. First operand 287 states and 504 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:50:55,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:50:55,544 INFO L93 Difference]: Finished difference Result 786 states and 1371 transitions. [2021-10-24 09:50:55,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 09:50:55,546 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-10-24 09:50:55,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:50:55,550 INFO L225 Difference]: With dead ends: 786 [2021-10-24 09:50:55,550 INFO L226 Difference]: Without dead ends: 500 [2021-10-24 09:50:55,552 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:50:55,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2021-10-24 09:50:55,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 429. [2021-10-24 09:50:55,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 428 states have (on average 1.5934579439252337) internal successors, (682), 428 states have internal predecessors, (682), 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) [2021-10-24 09:50:55,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 682 transitions. [2021-10-24 09:50:55,582 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 682 transitions. Word has length 86 [2021-10-24 09:50:55,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:50:55,582 INFO L470 AbstractCegarLoop]: Abstraction has 429 states and 682 transitions. [2021-10-24 09:50:55,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:50:55,583 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 682 transitions. [2021-10-24 09:50:55,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-10-24 09:50:55,587 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:50:55,587 INFO L512 BasicCegarLoop]: trace histogram [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, 1, 1, 1] [2021-10-24 09:50:55,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-24 09:50:55,587 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:50:55,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:50:55,594 INFO L82 PathProgramCache]: Analyzing trace with hash 763852790, now seen corresponding path program 1 times [2021-10-24 09:50:55,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:50:55,595 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476431504] [2021-10-24 09:50:55,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:50:55,595 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:50:55,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:50:55,655 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-24 09:50:55,656 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:50:55,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476431504] [2021-10-24 09:50:55,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476431504] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:50:55,657 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:50:55,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 09:50:55,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102293214] [2021-10-24 09:50:55,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 09:50:55,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:50:55,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 09:50:55,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:50:55,659 INFO L87 Difference]: Start difference. First operand 429 states and 682 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:50:55,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:50:55,985 INFO L93 Difference]: Finished difference Result 999 states and 1596 transitions. [2021-10-24 09:50:55,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 09:50:55,985 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-10-24 09:50:55,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:50:55,989 INFO L225 Difference]: With dead ends: 999 [2021-10-24 09:50:55,990 INFO L226 Difference]: Without dead ends: 571 [2021-10-24 09:50:55,994 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:50:55,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2021-10-24 09:50:56,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 500. [2021-10-24 09:50:56,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 499 states have (on average 1.5330661322645291) internal successors, (765), 499 states have internal predecessors, (765), 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) [2021-10-24 09:50:56,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 765 transitions. [2021-10-24 09:50:56,035 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 765 transitions. Word has length 87 [2021-10-24 09:50:56,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:50:56,035 INFO L470 AbstractCegarLoop]: Abstraction has 500 states and 765 transitions. [2021-10-24 09:50:56,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:50:56,036 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 765 transitions. [2021-10-24 09:50:56,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-10-24 09:50:56,054 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:50:56,054 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:50:56,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-24 09:50:56,054 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:50:56,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:50:56,055 INFO L82 PathProgramCache]: Analyzing trace with hash 2105966126, now seen corresponding path program 1 times [2021-10-24 09:50:56,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:50:56,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372667934] [2021-10-24 09:50:56,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:50:56,056 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:50:56,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:50:56,165 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-24 09:50:56,165 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:50:56,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372667934] [2021-10-24 09:50:56,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372667934] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:50:56,166 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:50:56,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 09:50:56,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328006447] [2021-10-24 09:50:56,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 09:50:56,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:50:56,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 09:50:56,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:50:56,168 INFO L87 Difference]: Start difference. First operand 500 states and 765 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 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) [2021-10-24 09:50:56,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:50:56,481 INFO L93 Difference]: Finished difference Result 1141 states and 1762 transitions. [2021-10-24 09:50:56,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 09:50:56,481 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 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 91 [2021-10-24 09:50:56,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:50:56,486 INFO L225 Difference]: With dead ends: 1141 [2021-10-24 09:50:56,486 INFO L226 Difference]: Without dead ends: 642 [2021-10-24 09:50:56,487 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:50:56,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2021-10-24 09:50:56,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2021-10-24 09:50:56,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 641 states have (on average 1.4820592823712948) internal successors, (950), 641 states have internal predecessors, (950), 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) [2021-10-24 09:50:56,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 950 transitions. [2021-10-24 09:50:56,507 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 950 transitions. Word has length 91 [2021-10-24 09:50:56,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:50:56,508 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 950 transitions. [2021-10-24 09:50:56,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 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) [2021-10-24 09:50:56,508 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 950 transitions. [2021-10-24 09:50:56,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-24 09:50:56,511 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:50:56,511 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:50:56,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-24 09:50:56,512 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:50:56,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:50:56,512 INFO L82 PathProgramCache]: Analyzing trace with hash 768862650, now seen corresponding path program 1 times [2021-10-24 09:50:56,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:50:56,513 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304667038] [2021-10-24 09:50:56,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:50:56,513 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:50:56,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:50:56,595 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-24 09:50:56,595 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:50:56,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304667038] [2021-10-24 09:50:56,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304667038] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:50:56,596 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:50:56,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 09:50:56,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780647642] [2021-10-24 09:50:56,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 09:50:56,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:50:56,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 09:50:56,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 09:50:56,598 INFO L87 Difference]: Start difference. First operand 642 states and 950 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 3 states have internal predecessors, (114), 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) [2021-10-24 09:50:57,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:50:57,113 INFO L93 Difference]: Finished difference Result 1567 states and 2267 transitions. [2021-10-24 09:50:57,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 09:50:57,114 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 3 states have internal predecessors, (114), 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 120 [2021-10-24 09:50:57,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:50:57,118 INFO L225 Difference]: With dead ends: 1567 [2021-10-24 09:50:57,119 INFO L226 Difference]: Without dead ends: 855 [2021-10-24 09:50:57,120 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 09:50:57,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2021-10-24 09:50:57,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 855. [2021-10-24 09:50:57,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 854 states have (on average 1.2505854800936769) internal successors, (1068), 854 states have internal predecessors, (1068), 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) [2021-10-24 09:50:57,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1068 transitions. [2021-10-24 09:50:57,145 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1068 transitions. Word has length 120 [2021-10-24 09:50:57,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:50:57,145 INFO L470 AbstractCegarLoop]: Abstraction has 855 states and 1068 transitions. [2021-10-24 09:50:57,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 3 states have internal predecessors, (114), 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) [2021-10-24 09:50:57,146 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1068 transitions. [2021-10-24 09:50:57,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-10-24 09:50:57,148 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:50:57,149 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-24 09:50:57,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-24 09:50:57,149 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:50:57,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:50:57,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1224149105, now seen corresponding path program 1 times [2021-10-24 09:50:57,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:50:57,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325803624] [2021-10-24 09:50:57,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:50:57,151 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:50:57,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:50:57,253 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-10-24 09:50:57,254 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:50:57,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325803624] [2021-10-24 09:50:57,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325803624] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:50:57,255 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:50:57,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 09:50:57,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895446840] [2021-10-24 09:50:57,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 09:50:57,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:50:57,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 09:50:57,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 09:50:57,259 INFO L87 Difference]: Start difference. First operand 855 states and 1068 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 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) [2021-10-24 09:50:57,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:50:57,698 INFO L93 Difference]: Finished difference Result 1851 states and 2339 transitions. [2021-10-24 09:50:57,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 09:50:57,699 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 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 137 [2021-10-24 09:50:57,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:50:57,705 INFO L225 Difference]: With dead ends: 1851 [2021-10-24 09:50:57,705 INFO L226 Difference]: Without dead ends: 997 [2021-10-24 09:50:57,707 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 09:50:57,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2021-10-24 09:50:57,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 997. [2021-10-24 09:50:57,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 996 states have (on average 1.2540160642570282) internal successors, (1249), 996 states have internal predecessors, (1249), 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) [2021-10-24 09:50:57,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1249 transitions. [2021-10-24 09:50:57,737 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1249 transitions. Word has length 137 [2021-10-24 09:50:57,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:50:57,738 INFO L470 AbstractCegarLoop]: Abstraction has 997 states and 1249 transitions. [2021-10-24 09:50:57,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 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) [2021-10-24 09:50:57,738 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1249 transitions. [2021-10-24 09:50:57,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-10-24 09:50:57,741 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:50:57,742 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-24 09:50:57,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-24 09:50:57,742 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:50:57,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:50:57,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1488493533, now seen corresponding path program 1 times [2021-10-24 09:50:57,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:50:57,743 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395399135] [2021-10-24 09:50:57,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:50:57,744 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:50:57,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:50:57,848 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-24 09:50:57,848 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:50:57,849 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395399135] [2021-10-24 09:50:57,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395399135] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:50:57,849 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:50:57,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-24 09:50:57,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082455477] [2021-10-24 09:50:57,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 09:50:57,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:50:57,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 09:50:57,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 09:50:57,852 INFO L87 Difference]: Start difference. First operand 997 states and 1249 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 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) [2021-10-24 09:50:58,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:50:58,286 INFO L93 Difference]: Finished difference Result 2135 states and 2650 transitions. [2021-10-24 09:50:58,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 09:50:58,287 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 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 137 [2021-10-24 09:50:58,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:50:58,293 INFO L225 Difference]: With dead ends: 2135 [2021-10-24 09:50:58,293 INFO L226 Difference]: Without dead ends: 1139 [2021-10-24 09:50:58,295 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 09:50:58,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2021-10-24 09:50:58,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 997. [2021-10-24 09:50:58,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 996 states have (on average 1.2218875502008033) internal successors, (1217), 996 states have internal predecessors, (1217), 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) [2021-10-24 09:50:58,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1217 transitions. [2021-10-24 09:50:58,323 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1217 transitions. Word has length 137 [2021-10-24 09:50:58,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:50:58,324 INFO L470 AbstractCegarLoop]: Abstraction has 997 states and 1217 transitions. [2021-10-24 09:50:58,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 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) [2021-10-24 09:50:58,324 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1217 transitions. [2021-10-24 09:50:58,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-10-24 09:50:58,327 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:50:58,327 INFO L512 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:50:58,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-24 09:50:58,328 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:50:58,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:50:58,328 INFO L82 PathProgramCache]: Analyzing trace with hash -927435986, now seen corresponding path program 1 times [2021-10-24 09:50:58,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:50:58,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745848754] [2021-10-24 09:50:58,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:50:58,329 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:50:58,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:50:58,405 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:50:58,406 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:50:58,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745848754] [2021-10-24 09:50:58,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745848754] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:50:58,406 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:50:58,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 09:50:58,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443574944] [2021-10-24 09:50:58,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 09:50:58,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:50:58,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 09:50:58,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:50:58,409 INFO L87 Difference]: Start difference. First operand 997 states and 1217 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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) [2021-10-24 09:50:58,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:50:58,699 INFO L93 Difference]: Finished difference Result 2135 states and 2586 transitions. [2021-10-24 09:50:58,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 09:50:58,699 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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 155 [2021-10-24 09:50:58,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:50:58,706 INFO L225 Difference]: With dead ends: 2135 [2021-10-24 09:50:58,706 INFO L226 Difference]: Without dead ends: 1139 [2021-10-24 09:50:58,707 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:50:58,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2021-10-24 09:50:58,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1068. [2021-10-24 09:50:58,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1068 states, 1067 states have (on average 1.1780693533270852) internal successors, (1257), 1067 states have internal predecessors, (1257), 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) [2021-10-24 09:50:58,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1257 transitions. [2021-10-24 09:50:58,738 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1257 transitions. Word has length 155 [2021-10-24 09:50:58,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:50:58,738 INFO L470 AbstractCegarLoop]: Abstraction has 1068 states and 1257 transitions. [2021-10-24 09:50:58,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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) [2021-10-24 09:50:58,739 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1257 transitions. [2021-10-24 09:50:58,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-10-24 09:50:58,742 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:50:58,742 INFO L512 BasicCegarLoop]: trace histogram [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, 3, 3, 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] [2021-10-24 09:50:58,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-24 09:50:58,743 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:50:58,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:50:58,743 INFO L82 PathProgramCache]: Analyzing trace with hash -1252270331, now seen corresponding path program 1 times [2021-10-24 09:50:58,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:50:58,744 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210693544] [2021-10-24 09:50:58,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:50:58,744 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:50:58,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:50:58,854 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2021-10-24 09:50:58,854 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:50:58,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210693544] [2021-10-24 09:50:58,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210693544] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:50:58,855 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:50:58,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 09:50:58,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095581192] [2021-10-24 09:50:58,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 09:50:58,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:50:58,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 09:50:58,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:50:58,857 INFO L87 Difference]: Start difference. First operand 1068 states and 1257 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:50:59,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:50:59,102 INFO L93 Difference]: Finished difference Result 1425 states and 1654 transitions. [2021-10-24 09:50:59,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 09:50:59,102 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2021-10-24 09:50:59,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:50:59,111 INFO L225 Difference]: With dead ends: 1425 [2021-10-24 09:50:59,111 INFO L226 Difference]: Without dead ends: 1423 [2021-10-24 09:50:59,111 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:50:59,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1423 states. [2021-10-24 09:50:59,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1423 to 1068. [2021-10-24 09:50:59,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1068 states, 1067 states have (on average 1.176194939081537) internal successors, (1255), 1067 states have internal predecessors, (1255), 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) [2021-10-24 09:50:59,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1255 transitions. [2021-10-24 09:50:59,144 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1255 transitions. Word has length 177 [2021-10-24 09:50:59,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:50:59,145 INFO L470 AbstractCegarLoop]: Abstraction has 1068 states and 1255 transitions. [2021-10-24 09:50:59,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:50:59,145 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1255 transitions. [2021-10-24 09:50:59,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2021-10-24 09:50:59,150 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:50:59,150 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 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] [2021-10-24 09:50:59,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-24 09:50:59,150 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:50:59,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:50:59,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1896308879, now seen corresponding path program 1 times [2021-10-24 09:50:59,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:50:59,152 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179579382] [2021-10-24 09:50:59,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:50:59,152 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:50:59,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:50:59,311 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 314 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-10-24 09:50:59,311 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:50:59,312 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179579382] [2021-10-24 09:50:59,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179579382] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:50:59,312 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:50:59,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-24 09:50:59,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155883542] [2021-10-24 09:50:59,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 09:50:59,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:50:59,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 09:50:59,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 09:50:59,314 INFO L87 Difference]: Start difference. First operand 1068 states and 1255 transitions. Second operand has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 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) [2021-10-24 09:50:59,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:50:59,735 INFO L93 Difference]: Finished difference Result 2133 states and 2508 transitions. [2021-10-24 09:50:59,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 09:50:59,735 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 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 241 [2021-10-24 09:50:59,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:50:59,736 INFO L225 Difference]: With dead ends: 2133 [2021-10-24 09:50:59,736 INFO L226 Difference]: Without dead ends: 0 [2021-10-24 09:50:59,738 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 09:50:59,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-24 09:50:59,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-24 09:50:59,739 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) [2021-10-24 09:50:59,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-24 09:50:59,739 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 241 [2021-10-24 09:50:59,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:50:59,739 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-24 09:50:59,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 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) [2021-10-24 09:50:59,740 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-24 09:50:59,740 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-24 09:50:59,742 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:50:59,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-24 09:50:59,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-24 09:50:59,749 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:50:59,786 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:50:59,787 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:50:59,925 INFO L857 garLoopResultBuilder]: For program point L102(lines 102 400) no Hoare annotation was computed. [2021-10-24 09:50:59,925 INFO L857 garLoopResultBuilder]: For program point L598(line 598) no Hoare annotation was computed. [2021-10-24 09:50:59,925 INFO L857 garLoopResultBuilder]: For program point L334(lines 334 400) no Hoare annotation was computed. [2021-10-24 09:50:59,925 INFO L857 garLoopResultBuilder]: For program point L302(lines 302 400) no Hoare annotation was computed. [2021-10-24 09:50:59,925 INFO L857 garLoopResultBuilder]: For program point L170(lines 170 400) no Hoare annotation was computed. [2021-10-24 09:50:59,925 INFO L857 garLoopResultBuilder]: For program point L204(lines 204 400) no Hoare annotation was computed. [2021-10-24 09:50:59,925 INFO L857 garLoopResultBuilder]: For program point L72(lines 72 400) no Hoare annotation was computed. [2021-10-24 09:50:59,925 INFO L857 garLoopResultBuilder]: For program point L271(lines 271 400) no Hoare annotation was computed. [2021-10-24 09:50:59,926 INFO L857 garLoopResultBuilder]: For program point L139(lines 139 400) no Hoare annotation was computed. [2021-10-24 09:50:59,926 INFO L857 garLoopResultBuilder]: For program point L371(lines 371 400) no Hoare annotation was computed. [2021-10-24 09:50:59,926 INFO L857 garLoopResultBuilder]: For program point L107(lines 107 400) no Hoare annotation was computed. [2021-10-24 09:50:59,926 INFO L857 garLoopResultBuilder]: For program point L41(lines 41 400) no Hoare annotation was computed. [2021-10-24 09:50:59,926 INFO L857 garLoopResultBuilder]: For program point L339(lines 339 400) no Hoare annotation was computed. [2021-10-24 09:50:59,926 INFO L857 garLoopResultBuilder]: For program point L207(lines 207 400) no Hoare annotation was computed. [2021-10-24 09:50:59,926 INFO L857 garLoopResultBuilder]: For program point L75(lines 75 400) no Hoare annotation was computed. [2021-10-24 09:50:59,926 INFO L857 garLoopResultBuilder]: For program point L373(lines 373 400) no Hoare annotation was computed. [2021-10-24 09:50:59,926 INFO L857 garLoopResultBuilder]: For program point L241(lines 241 400) no Hoare annotation was computed. [2021-10-24 09:50:59,927 INFO L857 garLoopResultBuilder]: For program point L175(lines 175 400) no Hoare annotation was computed. [2021-10-24 09:50:59,927 INFO L857 garLoopResultBuilder]: For program point L275(lines 275 400) no Hoare annotation was computed. [2021-10-24 09:50:59,927 INFO L857 garLoopResultBuilder]: For program point L375(lines 375 400) no Hoare annotation was computed. [2021-10-24 09:50:59,927 INFO L857 garLoopResultBuilder]: For program point L309(lines 309 400) no Hoare annotation was computed. [2021-10-24 09:50:59,927 INFO L857 garLoopResultBuilder]: For program point L45(lines 45 400) no Hoare annotation was computed. [2021-10-24 09:50:59,927 INFO L857 garLoopResultBuilder]: For program point L343(lines 343 400) no Hoare annotation was computed. [2021-10-24 09:50:59,927 INFO L857 garLoopResultBuilder]: For program point L112(lines 112 400) no Hoare annotation was computed. [2021-10-24 09:50:59,927 INFO L857 garLoopResultBuilder]: For program point L278(lines 278 400) no Hoare annotation was computed. [2021-10-24 09:50:59,927 INFO L857 garLoopResultBuilder]: For program point L146(lines 146 400) no Hoare annotation was computed. [2021-10-24 09:50:59,928 INFO L857 garLoopResultBuilder]: For program point L213(lines 213 400) no Hoare annotation was computed. [2021-10-24 09:50:59,928 INFO L857 garLoopResultBuilder]: For program point L82(lines 82 400) no Hoare annotation was computed. [2021-10-24 09:50:59,928 INFO L857 garLoopResultBuilder]: For program point L347(lines 347 400) no Hoare annotation was computed. [2021-10-24 09:50:59,928 INFO L857 garLoopResultBuilder]: For program point L248(lines 248 400) no Hoare annotation was computed. [2021-10-24 09:50:59,928 INFO L857 garLoopResultBuilder]: For program point L183(lines 183 400) no Hoare annotation was computed. [2021-10-24 09:50:59,928 INFO L857 garLoopResultBuilder]: For program point L150(lines 150 400) no Hoare annotation was computed. [2021-10-24 09:50:59,928 INFO L857 garLoopResultBuilder]: For program point L382(lines 382 400) no Hoare annotation was computed. [2021-10-24 09:50:59,928 INFO L857 garLoopResultBuilder]: For program point L316(lines 316 400) no Hoare annotation was computed. [2021-10-24 09:50:59,928 INFO L857 garLoopResultBuilder]: For program point L283(lines 283 400) no Hoare annotation was computed. [2021-10-24 09:50:59,929 INFO L857 garLoopResultBuilder]: For program point L118(lines 118 400) no Hoare annotation was computed. [2021-10-24 09:50:59,929 INFO L857 garLoopResultBuilder]: For program point L515-1(lines 40 585) no Hoare annotation was computed. [2021-10-24 09:50:59,929 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-24 09:50:59,929 INFO L857 garLoopResultBuilder]: For program point L218(lines 218 400) no Hoare annotation was computed. [2021-10-24 09:50:59,929 INFO L857 garLoopResultBuilder]: For program point L53(lines 53 400) no Hoare annotation was computed. [2021-10-24 09:50:59,929 INFO L857 garLoopResultBuilder]: For program point L154(lines 154 400) no Hoare annotation was computed. [2021-10-24 09:50:59,929 INFO L853 garLoopResultBuilder]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse1 (= ~a21~0 1)) (.cse0 (= ~a20~0 1)) (.cse2 (<= ~a16~0 5))) (or (and (<= ~a16~0 4) .cse0) (and .cse1 .cse2) (and .cse1 (<= 15 ~a8~0)) (and (<= 6 ~a16~0) .cse0) (and (= ~a17~0 1) .cse2))) [2021-10-24 09:50:59,930 INFO L857 garLoopResultBuilder]: For program point L518-1(lines 40 585) no Hoare annotation was computed. [2021-10-24 09:50:59,930 INFO L857 garLoopResultBuilder]: For program point L188(lines 188 400) no Hoare annotation was computed. [2021-10-24 09:50:59,930 INFO L857 garLoopResultBuilder]: For program point L519(line 519) no Hoare annotation was computed. [2021-10-24 09:50:59,930 INFO L857 garLoopResultBuilder]: For program point L387(lines 387 400) no Hoare annotation was computed. [2021-10-24 09:50:59,930 INFO L857 garLoopResultBuilder]: For program point L288(lines 288 400) no Hoare annotation was computed. [2021-10-24 09:50:59,930 INFO L857 garLoopResultBuilder]: For program point L255(lines 255 400) no Hoare annotation was computed. [2021-10-24 09:50:59,930 INFO L857 garLoopResultBuilder]: For program point L90(lines 90 400) no Hoare annotation was computed. [2021-10-24 09:50:59,930 INFO L857 garLoopResultBuilder]: For program point L355(lines 355 400) no Hoare annotation was computed. [2021-10-24 09:50:59,930 INFO L857 garLoopResultBuilder]: For program point L322(lines 322 400) no Hoare annotation was computed. [2021-10-24 09:50:59,931 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-24 09:50:59,931 INFO L857 garLoopResultBuilder]: For program point L124(lines 124 400) no Hoare annotation was computed. [2021-10-24 09:50:59,931 INFO L860 garLoopResultBuilder]: At program point L587(lines 587 604) the Hoare annotation is: true [2021-10-24 09:50:59,931 INFO L857 garLoopResultBuilder]: For program point L224(lines 224 400) no Hoare annotation was computed. [2021-10-24 09:50:59,931 INFO L857 garLoopResultBuilder]: For program point L158(lines 158 400) no Hoare annotation was computed. [2021-10-24 09:50:59,931 INFO L857 garLoopResultBuilder]: For program point L59(lines 59 400) no Hoare annotation was computed. [2021-10-24 09:50:59,931 INFO L857 garLoopResultBuilder]: For program point L94(lines 94 400) no Hoare annotation was computed. [2021-10-24 09:50:59,931 INFO L857 garLoopResultBuilder]: For program point L392(lines 392 400) no Hoare annotation was computed. [2021-10-24 09:50:59,931 INFO L857 garLoopResultBuilder]: For program point L326(lines 326 400) no Hoare annotation was computed. [2021-10-24 09:50:59,931 INFO L857 garLoopResultBuilder]: For program point L260(lines 260 400) no Hoare annotation was computed. [2021-10-24 09:50:59,932 INFO L857 garLoopResultBuilder]: For program point L228(lines 228 400) no Hoare annotation was computed. [2021-10-24 09:50:59,932 INFO L857 garLoopResultBuilder]: For program point L162(lines 162 400) no Hoare annotation was computed. [2021-10-24 09:50:59,932 INFO L857 garLoopResultBuilder]: For program point L129(lines 129 400) no Hoare annotation was computed. [2021-10-24 09:50:59,932 INFO L857 garLoopResultBuilder]: For program point L328(lines 328 400) no Hoare annotation was computed. [2021-10-24 09:50:59,932 INFO L857 garLoopResultBuilder]: For program point L196(lines 196 400) no Hoare annotation was computed. [2021-10-24 09:50:59,932 INFO L857 garLoopResultBuilder]: For program point L64(lines 64 400) no Hoare annotation was computed. [2021-10-24 09:50:59,940 INFO L853 garLoopResultBuilder]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse1 (= ~a21~0 1)) (.cse0 (= ~a20~0 1)) (.cse2 (<= ~a16~0 5))) (or (and (<= ~a16~0 4) .cse0) (and .cse1 .cse2) (and .cse1 (<= 15 ~a8~0)) (and (<= 6 ~a16~0) .cse0) (and (= ~a17~0 1) .cse2))) [2021-10-24 09:50:59,940 INFO L857 garLoopResultBuilder]: For program point L296(lines 296 400) no Hoare annotation was computed. [2021-10-24 09:50:59,940 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 519) no Hoare annotation was computed. [2021-10-24 09:50:59,940 INFO L857 garLoopResultBuilder]: For program point L363(lines 363 400) no Hoare annotation was computed. [2021-10-24 09:50:59,940 INFO L857 garLoopResultBuilder]: For program point L199(lines 199 400) no Hoare annotation was computed. [2021-10-24 09:50:59,940 INFO L857 garLoopResultBuilder]: For program point L365(lines 365 400) no Hoare annotation was computed. [2021-10-24 09:50:59,941 INFO L857 garLoopResultBuilder]: For program point L266(lines 266 400) no Hoare annotation was computed. [2021-10-24 09:50:59,941 INFO L857 garLoopResultBuilder]: For program point L233(lines 233 400) no Hoare annotation was computed. [2021-10-24 09:50:59,941 INFO L857 garLoopResultBuilder]: For program point L134(lines 134 400) no Hoare annotation was computed. [2021-10-24 09:50:59,945 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 09:50:59,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:50:59 BoogieIcfgContainer [2021-10-24 09:50:59,963 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 09:50:59,963 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 09:50:59,964 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 09:50:59,964 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 09:50:59,964 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:50:53" (3/4) ... [2021-10-24 09:50:59,967 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-24 09:50:59,996 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 109 nodes and edges [2021-10-24 09:50:59,998 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2021-10-24 09:51:00,000 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-10-24 09:51:00,002 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-24 09:51:00,156 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a40a57b-85ce-4776-88b2-d313bd4af20b/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 09:51:00,156 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 09:51:00,158 INFO L168 Benchmark]: Toolchain (without parser) took 9660.44 ms. Allocated memory was 115.3 MB in the beginning and 197.1 MB in the end (delta: 81.8 MB). Free memory was 79.0 MB in the beginning and 88.6 MB in the end (delta: -9.7 MB). Peak memory consumption was 71.8 MB. Max. memory is 16.1 GB. [2021-10-24 09:51:00,158 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 75.5 MB. Free memory was 51.2 MB in the beginning and 51.2 MB in the end (delta: 30.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:51:00,159 INFO L168 Benchmark]: CACSL2BoogieTranslator took 726.43 ms. Allocated memory is still 115.3 MB. Free memory was 78.7 MB in the beginning and 74.8 MB in the end (delta: 4.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 09:51:00,159 INFO L168 Benchmark]: Boogie Procedure Inliner took 103.13 ms. Allocated memory is still 115.3 MB. Free memory was 74.8 MB in the beginning and 68.9 MB in the end (delta: 5.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-24 09:51:00,160 INFO L168 Benchmark]: Boogie Preprocessor took 108.32 ms. Allocated memory is still 115.3 MB. Free memory was 68.9 MB in the beginning and 64.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-24 09:51:00,160 INFO L168 Benchmark]: RCFGBuilder took 1987.66 ms. Allocated memory is still 115.3 MB. Free memory was 64.7 MB in the beginning and 53.7 MB in the end (delta: 11.0 MB). Peak memory consumption was 44.2 MB. Max. memory is 16.1 GB. [2021-10-24 09:51:00,161 INFO L168 Benchmark]: TraceAbstraction took 6534.05 ms. Allocated memory was 115.3 MB in the beginning and 197.1 MB in the end (delta: 81.8 MB). Free memory was 53.0 MB in the beginning and 103.3 MB in the end (delta: -50.3 MB). Peak memory consumption was 30.0 MB. Max. memory is 16.1 GB. [2021-10-24 09:51:00,161 INFO L168 Benchmark]: Witness Printer took 192.92 ms. Allocated memory is still 197.1 MB. Free memory was 103.3 MB in the beginning and 88.6 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-24 09:51:00,163 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 75.5 MB. Free memory was 51.2 MB in the beginning and 51.2 MB in the end (delta: 30.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 726.43 ms. Allocated memory is still 115.3 MB. Free memory was 78.7 MB in the beginning and 74.8 MB in the end (delta: 4.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 103.13 ms. Allocated memory is still 115.3 MB. Free memory was 74.8 MB in the beginning and 68.9 MB in the end (delta: 5.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 108.32 ms. Allocated memory is still 115.3 MB. Free memory was 68.9 MB in the beginning and 64.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1987.66 ms. Allocated memory is still 115.3 MB. Free memory was 64.7 MB in the beginning and 53.7 MB in the end (delta: 11.0 MB). Peak memory consumption was 44.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6534.05 ms. Allocated memory was 115.3 MB in the beginning and 197.1 MB in the end (delta: 81.8 MB). Free memory was 53.0 MB in the beginning and 103.3 MB in the end (delta: -50.3 MB). Peak memory consumption was 30.0 MB. Max. memory is 16.1 GB. * Witness Printer took 192.92 ms. Allocated memory is still 197.1 MB. Free memory was 103.3 MB in the beginning and 88.6 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 519]: 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: 6443.5ms, OverallIterations: 11, TraceHistogramMax: 7, EmptinessCheckTime: 64.7ms, AutomataDifference: 4361.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 181.3ms, InitialAbstractionConstructionTime: 14.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 450 SDtfs, 906 SDslu, 56 SDs, 0 SdLazy, 2804 SolverSat, 719 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3000.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1068occurred in iteration=9, InterpolantAutomatonStates: 37, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 312.6ms AutomataMinimizationTime, 11 MinimizatonAttempts, 710 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 37 NumberOfFragments, 73 HoareAnnotationTreeSize, 3 FomulaSimplifications, 1416 FormulaSimplificationTreeSizeReduction, 79.1ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 54 FormulaSimplificationTreeSizeReductionInter, 94.2ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 111.7ms SsaConstructionTime, 303.3ms SatisfiabilityAnalysisTime, 796.4ms InterpolantComputationTime, 1378 NumberOfCodeBlocks, 1378 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 1367 ConstructedInterpolants, 0 QuantifiedInterpolants, 2744 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 1003/1003 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: ((((a16 <= 4 && a20 == 1) || (a21 == 1 && a16 <= 5)) || (a21 == 1 && 15 <= a8)) || (6 <= a16 && a20 == 1)) || (a17 == 1 && a16 <= 5) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: ((((a16 <= 4 && a20 == 1) || (a21 == 1 && a16 <= 5)) || (a21 == 1 && 15 <= a8)) || (6 <= a16 && a20 == 1)) || (a17 == 1 && a16 <= 5) RESULT: Ultimate proved your program to be correct! [2021-10-24 09:51:00,224 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a40a57b-85ce-4776-88b2-d313bd4af20b/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...