./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label11.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4286461-a6f0-433b-858e-c73107f4965b/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4286461-a6f0-433b-858e-c73107f4965b/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4286461-a6f0-433b-858e-c73107f4965b/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4286461-a6f0-433b-858e-c73107f4965b/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label11.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4286461-a6f0-433b-858e-c73107f4965b/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4286461-a6f0-433b-858e-c73107f4965b/bin/utaipan-q2qaUkNPG8 --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 4f5e94ed071347129094298d5dbb28caecb84213 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:46:34,084 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:46:34,086 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:46:34,116 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:46:34,117 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:46:34,118 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:46:34,119 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:46:34,122 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:46:34,124 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:46:34,125 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:46:34,126 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:46:34,127 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:46:34,128 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:46:34,129 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:46:34,130 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:46:34,132 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:46:34,133 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:46:34,134 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:46:34,136 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:46:34,139 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:46:34,140 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:46:34,142 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:46:34,143 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:46:34,144 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:46:34,148 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:46:34,148 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:46:34,149 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:46:34,150 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:46:34,151 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:46:34,152 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:46:34,152 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:46:34,153 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:46:34,162 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:46:34,163 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:46:34,164 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:46:34,165 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:46:34,166 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:46:34,166 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:46:34,166 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:46:34,169 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:46:34,170 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:46:34,171 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4286461-a6f0-433b-858e-c73107f4965b/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:46:34,223 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:46:34,223 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:46:34,224 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:46:34,224 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:46:34,225 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:46:34,225 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:46:34,225 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:46:34,225 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:46:34,226 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:46:34,226 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:46:34,226 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:46:34,226 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:46:34,226 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:46:34,227 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:46:34,227 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:46:34,228 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:46:34,228 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:46:34,228 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:46:34,228 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:46:34,228 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:46:34,228 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:46:34,229 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:46:34,229 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:46:34,229 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:46:34,229 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:46:34,236 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:46:34,236 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:46:34,236 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:46:34,237 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:46:34,238 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:46:34,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:46:34,239 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:46:34,239 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:46:34,239 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:46:34,240 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:46:34,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:46:34,241 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:46:34,241 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:46:34,241 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:46:34,241 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_a4286461-a6f0-433b-858e-c73107f4965b/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4286461-a6f0-433b-858e-c73107f4965b/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f5e94ed071347129094298d5dbb28caecb84213 [2021-10-13 07:46:34,534 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:46:34,558 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:46:34,562 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:46:34,564 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:46:34,564 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:46:34,565 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4286461-a6f0-433b-858e-c73107f4965b/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/eca-rers2012/Problem02_label11.c [2021-10-13 07:46:34,649 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4286461-a6f0-433b-858e-c73107f4965b/bin/utaipan-q2qaUkNPG8/data/b1c58a51c/35bf3a4d2d4642749af4b599db02d764/FLAGd6738a15e [2021-10-13 07:46:35,294 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:46:35,296 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4286461-a6f0-433b-858e-c73107f4965b/sv-benchmarks/c/eca-rers2012/Problem02_label11.c [2021-10-13 07:46:35,313 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4286461-a6f0-433b-858e-c73107f4965b/bin/utaipan-q2qaUkNPG8/data/b1c58a51c/35bf3a4d2d4642749af4b599db02d764/FLAGd6738a15e [2021-10-13 07:46:35,483 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4286461-a6f0-433b-858e-c73107f4965b/bin/utaipan-q2qaUkNPG8/data/b1c58a51c/35bf3a4d2d4642749af4b599db02d764 [2021-10-13 07:46:35,487 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:46:35,490 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:46:35,493 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:46:35,494 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:46:35,497 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:46:35,498 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:46:35" (1/1) ... [2021-10-13 07:46:35,501 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a83f1ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:35, skipping insertion in model container [2021-10-13 07:46:35,502 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:46:35" (1/1) ... [2021-10-13 07:46:35,510 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:46:35,560 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:46:35,888 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_a4286461-a6f0-433b-858e-c73107f4965b/sv-benchmarks/c/eca-rers2012/Problem02_label11.c[17696,17709] [2021-10-13 07:46:35,961 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:46:35,975 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:46:36,091 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_a4286461-a6f0-433b-858e-c73107f4965b/sv-benchmarks/c/eca-rers2012/Problem02_label11.c[17696,17709] [2021-10-13 07:46:36,120 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:46:36,137 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:46:36,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:36 WrapperNode [2021-10-13 07:46:36,138 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:46:36,140 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:46:36,140 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:46:36,140 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:46:36,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:36" (1/1) ... [2021-10-13 07:46:36,172 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:36" (1/1) ... [2021-10-13 07:46:36,233 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:46:36,234 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:46:36,234 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:46:36,234 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:46:36,246 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:36" (1/1) ... [2021-10-13 07:46:36,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:36" (1/1) ... [2021-10-13 07:46:36,250 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:36" (1/1) ... [2021-10-13 07:46:36,251 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:36" (1/1) ... [2021-10-13 07:46:36,283 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:36" (1/1) ... [2021-10-13 07:46:36,293 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:36" (1/1) ... [2021-10-13 07:46:36,297 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:36" (1/1) ... [2021-10-13 07:46:36,303 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:46:36,304 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:46:36,304 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:46:36,304 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:46:36,305 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:36" (1/1) ... [2021-10-13 07:46:36,314 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:46:36,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4286461-a6f0-433b-858e-c73107f4965b/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:46:36,339 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4286461-a6f0-433b-858e-c73107f4965b/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:46:36,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4286461-a6f0-433b-858e-c73107f4965b/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:46:36,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:46:36,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:46:36,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:46:36,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:46:38,018 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:46:38,018 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-13 07:46:38,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:46:38 BoogieIcfgContainer [2021-10-13 07:46:38,021 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:46:38,023 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:46:38,023 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:46:38,026 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:46:38,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:46:35" (1/3) ... [2021-10-13 07:46:38,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7938255e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:46:38, skipping insertion in model container [2021-10-13 07:46:38,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:36" (2/3) ... [2021-10-13 07:46:38,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7938255e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:46:38, skipping insertion in model container [2021-10-13 07:46:38,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:46:38" (3/3) ... [2021-10-13 07:46:38,030 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label11.c [2021-10-13 07:46:38,035 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:46:38,035 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:46:38,081 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:46:38,087 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, mConcurrency=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 [2021-10-13 07:46:38,088 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:46:38,102 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 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) [2021-10-13 07:46:38,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-13 07:46:38,111 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:46:38,111 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:46:38,112 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:46:38,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:46:38,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1243324339, now seen corresponding path program 1 times [2021-10-13 07:46:38,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:46:38,127 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122949041] [2021-10-13 07:46:38,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:46:38,128 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:46:38,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:46:38,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:46:38,484 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:46:38,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122949041] [2021-10-13 07:46:38,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122949041] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:46:38,486 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:46:38,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:46:38,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765631878] [2021-10-13 07:46:38,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:46:38,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:46:38,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:46:38,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:46:38,522 INFO L87 Difference]: Start difference. First operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 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 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:46:38,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:46:38,924 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2021-10-13 07:46:38,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:46:38,926 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-10-13 07:46:38,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:46:38,938 INFO L225 Difference]: With dead ends: 251 [2021-10-13 07:46:38,938 INFO L226 Difference]: Without dead ends: 163 [2021-10-13 07:46:38,941 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:46:38,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-10-13 07:46:38,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2021-10-13 07:46:38,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.8395061728395061) internal successors, (298), 162 states have internal predecessors, (298), 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) [2021-10-13 07:46:38,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 298 transitions. [2021-10-13 07:46:38,989 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 298 transitions. Word has length 80 [2021-10-13 07:46:38,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:46:38,990 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 298 transitions. [2021-10-13 07:46:38,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:46:38,990 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 298 transitions. [2021-10-13 07:46:38,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-10-13 07:46:38,994 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:46:38,994 INFO L512 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:46:38,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:46:38,995 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:46:38,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:46:38,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1833066408, now seen corresponding path program 1 times [2021-10-13 07:46:38,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:46:38,996 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101929559] [2021-10-13 07:46:38,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:46:38,997 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:46:39,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:46:39,061 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:46:39,061 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:46:39,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101929559] [2021-10-13 07:46:39,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101929559] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:46:39,062 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:46:39,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:46:39,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788607970] [2021-10-13 07:46:39,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:46:39,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:46:39,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:46:39,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:46:39,066 INFO L87 Difference]: Start difference. First operand 163 states and 298 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:46:39,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:46:39,424 INFO L93 Difference]: Finished difference Result 485 states and 891 transitions. [2021-10-13 07:46:39,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:46:39,425 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-10-13 07:46:39,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:46:39,428 INFO L225 Difference]: With dead ends: 485 [2021-10-13 07:46:39,428 INFO L226 Difference]: Without dead ends: 323 [2021-10-13 07:46:39,430 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:46:39,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-10-13 07:46:39,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2021-10-13 07:46:39,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 322 states have (on average 1.515527950310559) internal successors, (488), 322 states have internal predecessors, (488), 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) [2021-10-13 07:46:39,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 488 transitions. [2021-10-13 07:46:39,451 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 488 transitions. Word has length 84 [2021-10-13 07:46:39,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:46:39,451 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 488 transitions. [2021-10-13 07:46:39,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:46:39,452 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 488 transitions. [2021-10-13 07:46:39,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-10-13 07:46:39,457 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:46:39,457 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:46:39,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 07:46:39,458 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:46:39,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:46:39,458 INFO L82 PathProgramCache]: Analyzing trace with hash -2045181715, now seen corresponding path program 1 times [2021-10-13 07:46:39,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:46:39,459 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069834679] [2021-10-13 07:46:39,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:46:39,459 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:46:39,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:46:39,556 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:46:39,557 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:46:39,557 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069834679] [2021-10-13 07:46:39,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069834679] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:46:39,557 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:46:39,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:46:39,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153329310] [2021-10-13 07:46:39,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:46:39,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:46:39,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:46:39,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:46:39,560 INFO L87 Difference]: Start difference. First operand 323 states and 488 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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) [2021-10-13 07:46:39,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:46:39,979 INFO L93 Difference]: Finished difference Result 805 states and 1271 transitions. [2021-10-13 07:46:39,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:46:39,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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 89 [2021-10-13 07:46:39,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:46:39,984 INFO L225 Difference]: With dead ends: 805 [2021-10-13 07:46:39,984 INFO L226 Difference]: Without dead ends: 483 [2021-10-13 07:46:39,985 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:46:39,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2021-10-13 07:46:40,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 483. [2021-10-13 07:46:40,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.4066390041493777) internal successors, (678), 482 states have internal predecessors, (678), 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) [2021-10-13 07:46:40,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 678 transitions. [2021-10-13 07:46:40,006 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 678 transitions. Word has length 89 [2021-10-13 07:46:40,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:46:40,007 INFO L470 AbstractCegarLoop]: Abstraction has 483 states and 678 transitions. [2021-10-13 07:46:40,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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) [2021-10-13 07:46:40,007 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 678 transitions. [2021-10-13 07:46:40,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-10-13 07:46:40,011 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:46:40,012 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:46:40,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 07:46:40,012 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:46:40,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:46:40,013 INFO L82 PathProgramCache]: Analyzing trace with hash 2122121410, now seen corresponding path program 1 times [2021-10-13 07:46:40,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:46:40,014 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598874133] [2021-10-13 07:46:40,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:46:40,014 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:46:40,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:46:40,122 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-13 07:46:40,122 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:46:40,122 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598874133] [2021-10-13 07:46:40,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598874133] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:46:40,127 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:46:40,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:46:40,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5793313] [2021-10-13 07:46:40,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:46:40,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:46:40,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:46:40,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:46:40,130 INFO L87 Difference]: Start difference. First operand 483 states and 678 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 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) [2021-10-13 07:46:40,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:46:40,477 INFO L93 Difference]: Finished difference Result 1205 states and 1746 transitions. [2021-10-13 07:46:40,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:46:40,478 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 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 89 [2021-10-13 07:46:40,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:46:40,484 INFO L225 Difference]: With dead ends: 1205 [2021-10-13 07:46:40,484 INFO L226 Difference]: Without dead ends: 723 [2021-10-13 07:46:40,487 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:46:40,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2021-10-13 07:46:40,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 723. [2021-10-13 07:46:40,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 722 states have (on average 1.389196675900277) internal successors, (1003), 722 states have internal predecessors, (1003), 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) [2021-10-13 07:46:40,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 1003 transitions. [2021-10-13 07:46:40,520 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 1003 transitions. Word has length 89 [2021-10-13 07:46:40,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:46:40,522 INFO L470 AbstractCegarLoop]: Abstraction has 723 states and 1003 transitions. [2021-10-13 07:46:40,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 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) [2021-10-13 07:46:40,522 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 1003 transitions. [2021-10-13 07:46:40,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-10-13 07:46:40,531 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:46:40,531 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:46:40,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 07:46:40,532 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:46:40,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:46:40,533 INFO L82 PathProgramCache]: Analyzing trace with hash 588889584, now seen corresponding path program 1 times [2021-10-13 07:46:40,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:46:40,534 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912866123] [2021-10-13 07:46:40,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:46:40,535 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:46:40,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:46:40,607 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:46:40,608 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:46:40,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912866123] [2021-10-13 07:46:40,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912866123] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:46:40,608 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:46:40,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:46:40,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125234769] [2021-10-13 07:46:40,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:46:40,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:46:40,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:46:40,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:46:40,611 INFO L87 Difference]: Start difference. First operand 723 states and 1003 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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) [2021-10-13 07:46:40,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:46:40,938 INFO L93 Difference]: Finished difference Result 1365 states and 1915 transitions. [2021-10-13 07:46:40,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:46:40,942 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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 113 [2021-10-13 07:46:40,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:46:40,946 INFO L225 Difference]: With dead ends: 1365 [2021-10-13 07:46:40,946 INFO L226 Difference]: Without dead ends: 643 [2021-10-13 07:46:40,947 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:46:40,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2021-10-13 07:46:40,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2021-10-13 07:46:40,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 642 states have (on average 1.3442367601246106) internal successors, (863), 642 states have internal predecessors, (863), 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) [2021-10-13 07:46:40,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 863 transitions. [2021-10-13 07:46:40,965 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 863 transitions. Word has length 113 [2021-10-13 07:46:40,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:46:40,965 INFO L470 AbstractCegarLoop]: Abstraction has 643 states and 863 transitions. [2021-10-13 07:46:40,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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) [2021-10-13 07:46:40,966 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 863 transitions. [2021-10-13 07:46:40,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-10-13 07:46:40,968 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:46:40,969 INFO L512 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:46:40,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 07:46:40,969 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:46:40,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:46:40,970 INFO L82 PathProgramCache]: Analyzing trace with hash -966269180, now seen corresponding path program 1 times [2021-10-13 07:46:40,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:46:40,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705424124] [2021-10-13 07:46:40,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:46:40,971 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:46:40,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:46:41,028 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:46:41,033 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:46:41,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705424124] [2021-10-13 07:46:41,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705424124] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:46:41,034 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:46:41,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:46:41,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003439291] [2021-10-13 07:46:41,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:46:41,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:46:41,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:46:41,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:46:41,036 INFO L87 Difference]: Start difference. First operand 643 states and 863 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:46:41,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:46:41,356 INFO L93 Difference]: Finished difference Result 1525 states and 2020 transitions. [2021-10-13 07:46:41,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:46:41,358 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2021-10-13 07:46:41,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:46:41,364 INFO L225 Difference]: With dead ends: 1525 [2021-10-13 07:46:41,364 INFO L226 Difference]: Without dead ends: 883 [2021-10-13 07:46:41,365 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 [2021-10-13 07:46:41,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2021-10-13 07:46:41,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 883. [2021-10-13 07:46:41,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 882 states have (on average 1.2732426303854876) internal successors, (1123), 882 states have internal predecessors, (1123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:46:41,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1123 transitions. [2021-10-13 07:46:41,387 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1123 transitions. Word has length 121 [2021-10-13 07:46:41,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:46:41,388 INFO L470 AbstractCegarLoop]: Abstraction has 883 states and 1123 transitions. [2021-10-13 07:46:41,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:46:41,388 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1123 transitions. [2021-10-13 07:46:41,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-10-13 07:46:41,391 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:46:41,392 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:46:41,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-13 07:46:41,392 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:46:41,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:46:41,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1360778009, now seen corresponding path program 1 times [2021-10-13 07:46:41,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:46:41,394 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353761394] [2021-10-13 07:46:41,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:46:41,394 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:46:41,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:46:41,439 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-10-13 07:46:41,440 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:46:41,440 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353761394] [2021-10-13 07:46:41,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353761394] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:46:41,441 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:46:41,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:46:41,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437369051] [2021-10-13 07:46:41,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:46:41,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:46:41,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:46:41,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:46:41,443 INFO L87 Difference]: Start difference. First operand 883 states and 1123 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2021-10-13 07:46:41,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:46:41,760 INFO L93 Difference]: Finished difference Result 1765 states and 2245 transitions. [2021-10-13 07:46:41,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:46:41,761 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2021-10-13 07:46:41,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:46:41,769 INFO L225 Difference]: With dead ends: 1765 [2021-10-13 07:46:41,770 INFO L226 Difference]: Without dead ends: 883 [2021-10-13 07:46:41,771 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:46:41,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2021-10-13 07:46:41,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 883. [2021-10-13 07:46:41,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 882 states have (on average 1.2392290249433107) internal successors, (1093), 882 states have internal predecessors, (1093), 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) [2021-10-13 07:46:41,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1093 transitions. [2021-10-13 07:46:41,822 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1093 transitions. Word has length 135 [2021-10-13 07:46:41,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:46:41,823 INFO L470 AbstractCegarLoop]: Abstraction has 883 states and 1093 transitions. [2021-10-13 07:46:41,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2021-10-13 07:46:41,823 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1093 transitions. [2021-10-13 07:46:41,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-10-13 07:46:41,826 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:46:41,827 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-13 07:46:41,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-13 07:46:41,827 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:46:41,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:46:41,828 INFO L82 PathProgramCache]: Analyzing trace with hash 443080427, now seen corresponding path program 1 times [2021-10-13 07:46:41,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:46:41,828 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314724958] [2021-10-13 07:46:41,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:46:41,829 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:46:41,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:46:41,891 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:46:41,891 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:46:41,891 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314724958] [2021-10-13 07:46:41,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314724958] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:46:41,891 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:46:41,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:46:41,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252230735] [2021-10-13 07:46:41,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:46:41,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:46:41,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:46:41,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:46:41,894 INFO L87 Difference]: Start difference. First operand 883 states and 1093 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 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) [2021-10-13 07:46:42,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:46:42,235 INFO L93 Difference]: Finished difference Result 2325 states and 2921 transitions. [2021-10-13 07:46:42,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:46:42,235 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 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 141 [2021-10-13 07:46:42,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:46:42,245 INFO L225 Difference]: With dead ends: 2325 [2021-10-13 07:46:42,245 INFO L226 Difference]: Without dead ends: 1443 [2021-10-13 07:46:42,247 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 [2021-10-13 07:46:42,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1443 states. [2021-10-13 07:46:42,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1443 to 1443. [2021-10-13 07:46:42,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1443 states, 1442 states have (on average 1.2295423023578362) internal successors, (1773), 1442 states have internal predecessors, (1773), 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) [2021-10-13 07:46:42,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1443 states to 1443 states and 1773 transitions. [2021-10-13 07:46:42,287 INFO L78 Accepts]: Start accepts. Automaton has 1443 states and 1773 transitions. Word has length 141 [2021-10-13 07:46:42,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:46:42,287 INFO L470 AbstractCegarLoop]: Abstraction has 1443 states and 1773 transitions. [2021-10-13 07:46:42,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 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) [2021-10-13 07:46:42,288 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states and 1773 transitions. [2021-10-13 07:46:42,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-10-13 07:46:42,292 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:46:42,292 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:46:42,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-13 07:46:42,293 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:46:42,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:46:42,294 INFO L82 PathProgramCache]: Analyzing trace with hash 56929703, now seen corresponding path program 1 times [2021-10-13 07:46:42,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:46:42,294 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986361287] [2021-10-13 07:46:42,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:46:42,294 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:46:42,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:46:42,403 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 07:46:42,403 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:46:42,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986361287] [2021-10-13 07:46:42,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986361287] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:46:42,404 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:46:42,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:46:42,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284634517] [2021-10-13 07:46:42,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:46:42,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:46:42,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:46:42,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:46:42,412 INFO L87 Difference]: Start difference. First operand 1443 states and 1773 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 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) [2021-10-13 07:46:42,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:46:42,794 INFO L93 Difference]: Finished difference Result 3525 states and 4456 transitions. [2021-10-13 07:46:42,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:46:42,804 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 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) Word has length 146 [2021-10-13 07:46:42,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:46:42,817 INFO L225 Difference]: With dead ends: 3525 [2021-10-13 07:46:42,818 INFO L226 Difference]: Without dead ends: 2083 [2021-10-13 07:46:42,822 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:46:42,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2083 states. [2021-10-13 07:46:42,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2083 to 2083. [2021-10-13 07:46:42,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2083 states, 2082 states have (on average 1.245437079731028) internal successors, (2593), 2082 states have internal predecessors, (2593), 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) [2021-10-13 07:46:42,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2083 states to 2083 states and 2593 transitions. [2021-10-13 07:46:42,879 INFO L78 Accepts]: Start accepts. Automaton has 2083 states and 2593 transitions. Word has length 146 [2021-10-13 07:46:42,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:46:42,880 INFO L470 AbstractCegarLoop]: Abstraction has 2083 states and 2593 transitions. [2021-10-13 07:46:42,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 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) [2021-10-13 07:46:42,880 INFO L276 IsEmpty]: Start isEmpty. Operand 2083 states and 2593 transitions. [2021-10-13 07:46:42,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-10-13 07:46:42,885 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:46:42,886 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:46:42,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-13 07:46:42,886 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:46:42,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:46:42,887 INFO L82 PathProgramCache]: Analyzing trace with hash -619232363, now seen corresponding path program 1 times [2021-10-13 07:46:42,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:46:42,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033732181] [2021-10-13 07:46:42,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:46:42,889 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:46:42,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:46:42,982 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-13 07:46:42,982 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:46:42,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033732181] [2021-10-13 07:46:42,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033732181] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:46:42,983 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:46:42,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:46:42,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289748639] [2021-10-13 07:46:42,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:46:42,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:46:42,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:46:42,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:46:42,985 INFO L87 Difference]: Start difference. First operand 2083 states and 2593 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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) [2021-10-13 07:46:43,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:46:43,332 INFO L93 Difference]: Finished difference Result 4565 states and 5660 transitions. [2021-10-13 07:46:43,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:46:43,333 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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 [2021-10-13 07:46:43,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:46:43,343 INFO L225 Difference]: With dead ends: 4565 [2021-10-13 07:46:43,343 INFO L226 Difference]: Without dead ends: 1763 [2021-10-13 07:46:43,346 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 [2021-10-13 07:46:43,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1763 states. [2021-10-13 07:46:43,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1763 to 1763. [2021-10-13 07:46:43,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1763 states, 1762 states have (on average 1.2145289443813847) internal successors, (2140), 1762 states have internal predecessors, (2140), 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) [2021-10-13 07:46:43,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 2140 transitions. [2021-10-13 07:46:43,395 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 2140 transitions. Word has length 155 [2021-10-13 07:46:43,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:46:43,395 INFO L470 AbstractCegarLoop]: Abstraction has 1763 states and 2140 transitions. [2021-10-13 07:46:43,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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) [2021-10-13 07:46:43,396 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 2140 transitions. [2021-10-13 07:46:43,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-10-13 07:46:43,401 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:46:43,401 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:46:43,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-13 07:46:43,402 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:46:43,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:46:43,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1119650218, now seen corresponding path program 1 times [2021-10-13 07:46:43,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:46:43,403 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437017080] [2021-10-13 07:46:43,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:46:43,403 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:46:43,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:46:43,455 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-10-13 07:46:43,456 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:46:43,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437017080] [2021-10-13 07:46:43,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437017080] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:46:43,456 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:46:43,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:46:43,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862944776] [2021-10-13 07:46:43,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:46:43,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:46:43,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:46:43,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:46:43,459 INFO L87 Difference]: Start difference. First operand 1763 states and 2140 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:46:43,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:46:43,634 INFO L93 Difference]: Finished difference Result 3205 states and 3915 transitions. [2021-10-13 07:46:43,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:46:43,634 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 187 [2021-10-13 07:46:43,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:46:43,641 INFO L225 Difference]: With dead ends: 3205 [2021-10-13 07:46:43,641 INFO L226 Difference]: Without dead ends: 1123 [2021-10-13 07:46:43,643 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:46:43,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2021-10-13 07:46:43,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 643. [2021-10-13 07:46:43,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 642 states have (on average 1.1121495327102804) internal successors, (714), 642 states have internal predecessors, (714), 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) [2021-10-13 07:46:43,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 714 transitions. [2021-10-13 07:46:43,667 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 714 transitions. Word has length 187 [2021-10-13 07:46:43,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:46:43,667 INFO L470 AbstractCegarLoop]: Abstraction has 643 states and 714 transitions. [2021-10-13 07:46:43,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:46:43,668 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 714 transitions. [2021-10-13 07:46:43,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-10-13 07:46:43,671 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:46:43,671 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:46:43,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-13 07:46:43,672 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:46:43,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:46:43,672 INFO L82 PathProgramCache]: Analyzing trace with hash -595191763, now seen corresponding path program 1 times [2021-10-13 07:46:43,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:46:43,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440303730] [2021-10-13 07:46:43,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:46:43,673 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:46:43,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:46:43,770 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 242 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:46:43,770 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:46:43,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440303730] [2021-10-13 07:46:43,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440303730] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:46:43,771 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:46:43,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 07:46:43,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610758891] [2021-10-13 07:46:43,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:46:43,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:46:43,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:46:43,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:46:43,773 INFO L87 Difference]: Start difference. First operand 643 states and 714 transitions. Second operand has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 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) [2021-10-13 07:46:44,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:46:44,101 INFO L93 Difference]: Finished difference Result 1205 states and 1344 transitions. [2021-10-13 07:46:44,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:46:44,102 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 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 213 [2021-10-13 07:46:44,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:46:44,105 INFO L225 Difference]: With dead ends: 1205 [2021-10-13 07:46:44,105 INFO L226 Difference]: Without dead ends: 643 [2021-10-13 07:46:44,106 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:46:44,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2021-10-13 07:46:44,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2021-10-13 07:46:44,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 642 states have (on average 1.102803738317757) internal successors, (708), 642 states have internal predecessors, (708), 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) [2021-10-13 07:46:44,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 708 transitions. [2021-10-13 07:46:44,124 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 708 transitions. Word has length 213 [2021-10-13 07:46:44,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:46:44,124 INFO L470 AbstractCegarLoop]: Abstraction has 643 states and 708 transitions. [2021-10-13 07:46:44,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 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) [2021-10-13 07:46:44,125 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 708 transitions. [2021-10-13 07:46:44,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-10-13 07:46:44,128 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:46:44,129 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:46:44,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-13 07:46:44,129 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:46:44,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:46:44,130 INFO L82 PathProgramCache]: Analyzing trace with hash -890425798, now seen corresponding path program 1 times [2021-10-13 07:46:44,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:46:44,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966889301] [2021-10-13 07:46:44,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:46:44,131 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:46:44,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:46:44,212 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 245 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-10-13 07:46:44,213 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:46:44,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966889301] [2021-10-13 07:46:44,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966889301] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:46:44,213 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:46:44,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 07:46:44,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238589643] [2021-10-13 07:46:44,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:46:44,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:46:44,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:46:44,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:46:44,215 INFO L87 Difference]: Start difference. First operand 643 states and 708 transitions. Second operand has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 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) [2021-10-13 07:46:44,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:46:44,578 INFO L93 Difference]: Finished difference Result 1205 states and 1332 transitions. [2021-10-13 07:46:44,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:46:44,579 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 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 226 [2021-10-13 07:46:44,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:46:44,583 INFO L225 Difference]: With dead ends: 1205 [2021-10-13 07:46:44,583 INFO L226 Difference]: Without dead ends: 643 [2021-10-13 07:46:44,584 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:46:44,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2021-10-13 07:46:44,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2021-10-13 07:46:44,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 642 states have (on average 1.0981308411214954) internal successors, (705), 642 states have internal predecessors, (705), 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) [2021-10-13 07:46:44,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 705 transitions. [2021-10-13 07:46:44,604 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 705 transitions. Word has length 226 [2021-10-13 07:46:44,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:46:44,604 INFO L470 AbstractCegarLoop]: Abstraction has 643 states and 705 transitions. [2021-10-13 07:46:44,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 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) [2021-10-13 07:46:44,605 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 705 transitions. [2021-10-13 07:46:44,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2021-10-13 07:46:44,609 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:46:44,609 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:46:44,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-13 07:46:44,610 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:46:44,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:46:44,610 INFO L82 PathProgramCache]: Analyzing trace with hash 775708772, now seen corresponding path program 1 times [2021-10-13 07:46:44,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:46:44,611 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726326329] [2021-10-13 07:46:44,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:46:44,611 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:46:44,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:46:44,866 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 167 proven. 94 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-10-13 07:46:44,866 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:46:44,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726326329] [2021-10-13 07:46:44,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726326329] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:46:44,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743925651] [2021-10-13 07:46:44,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:46:44,868 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:46:44,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4286461-a6f0-433b-858e-c73107f4965b/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:46:44,871 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4286461-a6f0-433b-858e-c73107f4965b/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:46:44,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4286461-a6f0-433b-858e-c73107f4965b/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 07:46:45,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:46:45,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:46:45,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:46:45,911 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2021-10-13 07:46:45,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:46:46,759 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2021-10-13 07:46:46,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743925651] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:46:46,759 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-13 07:46:46,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [4] total 5 [2021-10-13 07:46:46,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170820628] [2021-10-13 07:46:46,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:46:46,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:46:46,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:46:46,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:46:46,763 INFO L87 Difference]: Start difference. First operand 643 states and 705 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:46:46,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:46:46,884 INFO L93 Difference]: Finished difference Result 643 states and 705 transitions. [2021-10-13 07:46:46,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:46:46,885 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 248 [2021-10-13 07:46:46,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:46:46,886 INFO L225 Difference]: With dead ends: 643 [2021-10-13 07:46:46,886 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 07:46:46,887 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 494 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.7ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:46:46,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 07:46:46,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 07:46:46,888 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) [2021-10-13 07:46:46,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 07:46:46,889 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 248 [2021-10-13 07:46:46,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:46:46,889 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 07:46:46,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:46:46,890 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 07:46:46,890 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 07:46:46,893 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:46:46,932 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4286461-a6f0-433b-858e-c73107f4965b/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:46:47,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4286461-a6f0-433b-858e-c73107f4965b/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-10-13 07:46:47,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 07:46:47,126 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:46:47,149 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:46:47,150 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:46:47,454 INFO L857 garLoopResultBuilder]: For program point L301(lines 301 423) no Hoare annotation was computed. [2021-10-13 07:46:47,454 INFO L857 garLoopResultBuilder]: For program point L235(lines 235 423) no Hoare annotation was computed. [2021-10-13 07:46:47,454 INFO L857 garLoopResultBuilder]: For program point L169(lines 169 423) no Hoare annotation was computed. [2021-10-13 07:46:47,454 INFO L857 garLoopResultBuilder]: For program point L303(lines 303 423) no Hoare annotation was computed. [2021-10-13 07:46:47,454 INFO L857 garLoopResultBuilder]: For program point L105(lines 105 423) no Hoare annotation was computed. [2021-10-13 07:46:47,454 INFO L857 garLoopResultBuilder]: For program point L502-1(lines 39 608) no Hoare annotation was computed. [2021-10-13 07:46:47,455 INFO L857 garLoopResultBuilder]: For program point L40(lines 40 423) no Hoare annotation was computed. [2021-10-13 07:46:47,455 INFO L857 garLoopResultBuilder]: For program point L371(lines 371 423) no Hoare annotation was computed. [2021-10-13 07:46:47,455 INFO L857 garLoopResultBuilder]: For program point L505-1(lines 39 608) no Hoare annotation was computed. [2021-10-13 07:46:47,455 INFO L857 garLoopResultBuilder]: For program point L307(lines 307 423) no Hoare annotation was computed. [2021-10-13 07:46:47,455 INFO L857 garLoopResultBuilder]: For program point L175(lines 175 423) no Hoare annotation was computed. [2021-10-13 07:46:47,455 INFO L857 garLoopResultBuilder]: For program point L109(lines 109 423) no Hoare annotation was computed. [2021-10-13 07:46:47,455 INFO L857 garLoopResultBuilder]: For program point L506(line 506) no Hoare annotation was computed. [2021-10-13 07:46:47,455 INFO L857 garLoopResultBuilder]: For program point L242(lines 242 423) no Hoare annotation was computed. [2021-10-13 07:46:47,456 INFO L857 garLoopResultBuilder]: For program point L45(lines 45 423) no Hoare annotation was computed. [2021-10-13 07:46:47,456 INFO L857 garLoopResultBuilder]: For program point L244(lines 244 423) no Hoare annotation was computed. [2021-10-13 07:46:47,456 INFO L857 garLoopResultBuilder]: For program point L179(lines 179 423) no Hoare annotation was computed. [2021-10-13 07:46:47,456 INFO L857 garLoopResultBuilder]: For program point L378(lines 378 423) no Hoare annotation was computed. [2021-10-13 07:46:47,456 INFO L857 garLoopResultBuilder]: For program point L48(lines 48 423) no Hoare annotation was computed. [2021-10-13 07:46:47,456 INFO L857 garLoopResultBuilder]: For program point L247(lines 247 423) no Hoare annotation was computed. [2021-10-13 07:46:47,456 INFO L857 garLoopResultBuilder]: For program point L116(lines 116 423) no Hoare annotation was computed. [2021-10-13 07:46:47,456 INFO L857 garLoopResultBuilder]: For program point L52(lines 52 423) no Hoare annotation was computed. [2021-10-13 07:46:47,457 INFO L857 garLoopResultBuilder]: For program point L185(lines 185 423) no Hoare annotation was computed. [2021-10-13 07:46:47,457 INFO L857 garLoopResultBuilder]: For program point L385(lines 385 423) no Hoare annotation was computed. [2021-10-13 07:46:47,457 INFO L857 garLoopResultBuilder]: For program point L319(lines 319 423) no Hoare annotation was computed. [2021-10-13 07:46:47,457 INFO L857 garLoopResultBuilder]: For program point L189(lines 189 423) no Hoare annotation was computed. [2021-10-13 07:46:47,457 INFO L857 garLoopResultBuilder]: For program point L123(lines 123 423) no Hoare annotation was computed. [2021-10-13 07:46:47,457 INFO L857 garLoopResultBuilder]: For program point L57(lines 57 423) no Hoare annotation was computed. [2021-10-13 07:46:47,457 INFO L857 garLoopResultBuilder]: For program point L388(lines 388 423) no Hoare annotation was computed. [2021-10-13 07:46:47,457 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 07:46:47,457 INFO L857 garLoopResultBuilder]: For program point L390(lines 390 423) no Hoare annotation was computed. [2021-10-13 07:46:47,458 INFO L857 garLoopResultBuilder]: For program point L324(lines 324 423) no Hoare annotation was computed. [2021-10-13 07:46:47,458 INFO L857 garLoopResultBuilder]: For program point L258(lines 258 423) no Hoare annotation was computed. [2021-10-13 07:46:47,458 INFO L857 garLoopResultBuilder]: For program point L60(lines 60 423) no Hoare annotation was computed. [2021-10-13 07:46:47,458 INFO L857 garLoopResultBuilder]: For program point L195(lines 195 423) no Hoare annotation was computed. [2021-10-13 07:46:47,458 INFO L857 garLoopResultBuilder]: For program point L129(lines 129 423) no Hoare annotation was computed. [2021-10-13 07:46:47,458 INFO L857 garLoopResultBuilder]: For program point L64(lines 64 423) no Hoare annotation was computed. [2021-10-13 07:46:47,458 INFO L857 garLoopResultBuilder]: For program point L263(lines 263 423) no Hoare annotation was computed. [2021-10-13 07:46:47,458 INFO L857 garLoopResultBuilder]: For program point L197(lines 197 423) no Hoare annotation was computed. [2021-10-13 07:46:47,459 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 506) no Hoare annotation was computed. [2021-10-13 07:46:47,459 INFO L857 garLoopResultBuilder]: For program point L199(lines 199 423) no Hoare annotation was computed. [2021-10-13 07:46:47,459 INFO L857 garLoopResultBuilder]: For program point L133(lines 133 423) no Hoare annotation was computed. [2021-10-13 07:46:47,459 INFO L857 garLoopResultBuilder]: For program point L399(lines 399 423) no Hoare annotation was computed. [2021-10-13 07:46:47,459 INFO L857 garLoopResultBuilder]: For program point L201(lines 201 423) no Hoare annotation was computed. [2021-10-13 07:46:47,459 INFO L857 garLoopResultBuilder]: For program point L69(lines 69 423) no Hoare annotation was computed. [2021-10-13 07:46:47,459 INFO L857 garLoopResultBuilder]: For program point L269(lines 269 423) no Hoare annotation was computed. [2021-10-13 07:46:47,459 INFO L857 garLoopResultBuilder]: For program point L204(lines 204 423) no Hoare annotation was computed. [2021-10-13 07:46:47,459 INFO L857 garLoopResultBuilder]: For program point L271(lines 271 423) no Hoare annotation was computed. [2021-10-13 07:46:47,460 INFO L857 garLoopResultBuilder]: For program point L404(lines 404 423) no Hoare annotation was computed. [2021-10-13 07:46:47,460 INFO L857 garLoopResultBuilder]: For program point L338(lines 338 423) no Hoare annotation was computed. [2021-10-13 07:46:47,460 INFO L857 garLoopResultBuilder]: For program point L140(lines 140 423) no Hoare annotation was computed. [2021-10-13 07:46:47,460 INFO L857 garLoopResultBuilder]: For program point L75(lines 75 423) no Hoare annotation was computed. [2021-10-13 07:46:47,460 INFO L857 garLoopResultBuilder]: For program point L208(lines 208 423) no Hoare annotation was computed. [2021-10-13 07:46:47,460 INFO L857 garLoopResultBuilder]: For program point L341(lines 341 423) no Hoare annotation was computed. [2021-10-13 07:46:47,460 INFO L857 garLoopResultBuilder]: For program point L408(lines 408 423) no Hoare annotation was computed. [2021-10-13 07:46:47,460 INFO L857 garLoopResultBuilder]: For program point L144(lines 144 423) no Hoare annotation was computed. [2021-10-13 07:46:47,461 INFO L853 garLoopResultBuilder]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse6 (<= 8 ~a17~0)) (.cse7 (<= ~a17~0 8)) (.cse3 (<= ~a28~0 10)) (.cse4 (= ~a25~0 0)) (.cse0 (<= 9 ~a28~0)) (.cse5 (= ~a25~0 1)) (.cse1 (<= ~a17~0 7)) (.cse2 (= ~a11~0 0)) (.cse8 (= ~a19~0 1))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse5 .cse6 .cse7 .cse3) (and .cse6 .cse7 .cse3 .cse4) (and (<= 10 ~a28~0) .cse1 .cse3 .cse4) (and (= ~a25~0 ~a11~0) .cse5 .cse1 .cse8 (<= ~a28~0 7)) (and .cse5 .cse6 .cse7 .cse8) (and .cse0 .cse5 .cse1 .cse3) (and .cse1 .cse8 .cse4) (and .cse0 .cse5 .cse1 .cse2 .cse8))) [2021-10-13 07:46:47,461 INFO L857 garLoopResultBuilder]: For program point L79(lines 79 423) no Hoare annotation was computed. [2021-10-13 07:46:47,461 INFO L857 garLoopResultBuilder]: For program point L212(lines 212 423) no Hoare annotation was computed. [2021-10-13 07:46:47,461 INFO L860 garLoopResultBuilder]: At program point L610(lines 610 627) the Hoare annotation is: true [2021-10-13 07:46:47,461 INFO L857 garLoopResultBuilder]: For program point L412(lines 412 423) no Hoare annotation was computed. [2021-10-13 07:46:47,461 INFO L857 garLoopResultBuilder]: For program point L347(lines 347 423) no Hoare annotation was computed. [2021-10-13 07:46:47,461 INFO L857 garLoopResultBuilder]: For program point L149(lines 149 423) no Hoare annotation was computed. [2021-10-13 07:46:47,461 INFO L857 garLoopResultBuilder]: For program point L414(lines 414 423) no Hoare annotation was computed. [2021-10-13 07:46:47,461 INFO L857 garLoopResultBuilder]: For program point L84(lines 84 423) no Hoare annotation was computed. [2021-10-13 07:46:47,461 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 07:46:47,461 INFO L857 garLoopResultBuilder]: For program point L417(lines 417 423) no Hoare annotation was computed. [2021-10-13 07:46:47,462 INFO L857 garLoopResultBuilder]: For program point L153(lines 153 423) no Hoare annotation was computed. [2021-10-13 07:46:47,462 INFO L853 garLoopResultBuilder]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse6 (<= 8 ~a17~0)) (.cse7 (<= ~a17~0 8)) (.cse3 (<= ~a28~0 10)) (.cse4 (= ~a25~0 0)) (.cse0 (<= 9 ~a28~0)) (.cse5 (= ~a25~0 1)) (.cse1 (<= ~a17~0 7)) (.cse2 (= ~a11~0 0)) (.cse8 (= ~a19~0 1))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse5 .cse6 .cse7 .cse3) (and .cse6 .cse7 .cse3 .cse4) (and (<= 10 ~a28~0) .cse1 .cse3 .cse4) (and (= ~a25~0 ~a11~0) .cse5 .cse1 .cse8 (<= ~a28~0 7)) (and .cse5 .cse6 .cse7 .cse8) (and .cse0 .cse5 .cse1 .cse3) (and .cse1 .cse8 .cse4) (and .cse0 .cse5 .cse1 .cse2 .cse8))) [2021-10-13 07:46:47,462 INFO L857 garLoopResultBuilder]: For program point L286(lines 286 423) no Hoare annotation was computed. [2021-10-13 07:46:47,462 INFO L857 garLoopResultBuilder]: For program point L419(lines 419 423) no Hoare annotation was computed. [2021-10-13 07:46:47,462 INFO L857 garLoopResultBuilder]: For program point L222(lines 222 423) no Hoare annotation was computed. [2021-10-13 07:46:47,462 INFO L857 garLoopResultBuilder]: For program point L290(lines 290 423) no Hoare annotation was computed. [2021-10-13 07:46:47,462 INFO L857 garLoopResultBuilder]: For program point L158(lines 158 423) no Hoare annotation was computed. [2021-10-13 07:46:47,462 INFO L857 garLoopResultBuilder]: For program point L92(lines 92 423) no Hoare annotation was computed. [2021-10-13 07:46:47,462 INFO L857 garLoopResultBuilder]: For program point L621(line 621) no Hoare annotation was computed. [2021-10-13 07:46:47,462 INFO L857 garLoopResultBuilder]: For program point L225(lines 225 423) no Hoare annotation was computed. [2021-10-13 07:46:47,463 INFO L857 garLoopResultBuilder]: For program point L359(lines 359 423) no Hoare annotation was computed. [2021-10-13 07:46:47,463 INFO L857 garLoopResultBuilder]: For program point L293(lines 293 423) no Hoare annotation was computed. [2021-10-13 07:46:47,463 INFO L857 garLoopResultBuilder]: For program point L228(lines 228 423) no Hoare annotation was computed. [2021-10-13 07:46:47,463 INFO L857 garLoopResultBuilder]: For program point L296(lines 296 423) no Hoare annotation was computed. [2021-10-13 07:46:47,463 INFO L857 garLoopResultBuilder]: For program point L164(lines 164 423) no Hoare annotation was computed. [2021-10-13 07:46:47,463 INFO L857 garLoopResultBuilder]: For program point L364(lines 364 423) no Hoare annotation was computed. [2021-10-13 07:46:47,463 INFO L857 garLoopResultBuilder]: For program point L233(lines 233 423) no Hoare annotation was computed. [2021-10-13 07:46:47,463 INFO L857 garLoopResultBuilder]: For program point L101(lines 101 423) no Hoare annotation was computed. [2021-10-13 07:46:47,467 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:46:47,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:46:47 BoogieIcfgContainer [2021-10-13 07:46:47,508 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:46:47,508 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:46:47,509 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:46:47,509 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:46:47,510 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:46:38" (3/4) ... [2021-10-13 07:46:47,513 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 07:46:47,548 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 114 nodes and edges [2021-10-13 07:46:47,550 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2021-10-13 07:46:47,552 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-13 07:46:47,554 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-13 07:46:47,714 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4286461-a6f0-433b-858e-c73107f4965b/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:46:47,714 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:46:47,716 INFO L168 Benchmark]: Toolchain (without parser) took 12225.04 ms. Allocated memory was 88.1 MB in the beginning and 224.4 MB in the end (delta: 136.3 MB). Free memory was 48.6 MB in the beginning and 79.0 MB in the end (delta: -30.3 MB). Peak memory consumption was 104.8 MB. Max. memory is 16.1 GB. [2021-10-13 07:46:47,716 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 88.1 MB. Free memory is still 66.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:46:47,717 INFO L168 Benchmark]: CACSL2BoogieTranslator took 645.10 ms. Allocated memory was 88.1 MB in the beginning and 113.2 MB in the end (delta: 25.2 MB). Free memory was 48.4 MB in the beginning and 72.6 MB in the end (delta: -24.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:46:47,718 INFO L168 Benchmark]: Boogie Procedure Inliner took 93.68 ms. Allocated memory is still 113.2 MB. Free memory was 72.6 MB in the beginning and 67.4 MB in the end (delta: 5.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-13 07:46:47,718 INFO L168 Benchmark]: Boogie Preprocessor took 69.55 ms. Allocated memory is still 113.2 MB. Free memory was 67.4 MB in the beginning and 63.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:46:47,719 INFO L168 Benchmark]: RCFGBuilder took 1717.19 ms. Allocated memory was 113.2 MB in the beginning and 155.2 MB in the end (delta: 41.9 MB). Free memory was 63.2 MB in the beginning and 84.5 MB in the end (delta: -21.3 MB). Peak memory consumption was 30.8 MB. Max. memory is 16.1 GB. [2021-10-13 07:46:47,719 INFO L168 Benchmark]: TraceAbstraction took 9484.99 ms. Allocated memory was 155.2 MB in the beginning and 224.4 MB in the end (delta: 69.2 MB). Free memory was 83.4 MB in the beginning and 94.7 MB in the end (delta: -11.3 MB). Peak memory consumption was 57.9 MB. Max. memory is 16.1 GB. [2021-10-13 07:46:47,719 INFO L168 Benchmark]: Witness Printer took 205.99 ms. Allocated memory is still 224.4 MB. Free memory was 94.7 MB in the beginning and 79.0 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-13 07:46:47,722 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 88.1 MB. Free memory is still 66.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 645.10 ms. Allocated memory was 88.1 MB in the beginning and 113.2 MB in the end (delta: 25.2 MB). Free memory was 48.4 MB in the beginning and 72.6 MB in the end (delta: -24.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 93.68 ms. Allocated memory is still 113.2 MB. Free memory was 72.6 MB in the beginning and 67.4 MB in the end (delta: 5.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 69.55 ms. Allocated memory is still 113.2 MB. Free memory was 67.4 MB in the beginning and 63.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1717.19 ms. Allocated memory was 113.2 MB in the beginning and 155.2 MB in the end (delta: 41.9 MB). Free memory was 63.2 MB in the beginning and 84.5 MB in the end (delta: -21.3 MB). Peak memory consumption was 30.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9484.99 ms. Allocated memory was 155.2 MB in the beginning and 224.4 MB in the end (delta: 69.2 MB). Free memory was 83.4 MB in the beginning and 94.7 MB in the end (delta: -11.3 MB). Peak memory consumption was 57.9 MB. Max. memory is 16.1 GB. * Witness Printer took 205.99 ms. Allocated memory is still 224.4 MB. Free memory was 94.7 MB in the beginning and 79.0 MB in the end (delta: 15.7 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: 506]: 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, 85 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 9387.4ms, OverallIterations: 14, TraceHistogramMax: 6, EmptinessCheckTime: 65.6ms, AutomataDifference: 4730.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 346.2ms, InitialAbstractionConstructionTime: 11.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1153 SDtfs, 916 SDslu, 95 SDs, 0 SdLazy, 3286 SolverSat, 646 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3187.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 535 GetRequests, 515 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 79.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=2083occurred in iteration=9, InterpolantAutomatonStates: 44, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 403.1ms AutomataMinimizationTime, 14 MinimizatonAttempts, 480 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 47 NumberOfFragments, 249 HoareAnnotationTreeSize, 3 FomulaSimplifications, 626 FormulaSimplificationTreeSizeReduction, 65.8ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 158 FormulaSimplificationTreeSizeReductionInter, 272.3ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 139.5ms SsaConstructionTime, 479.7ms SatisfiabilityAnalysisTime, 2670.1ms InterpolantComputationTime, 2275 NumberOfCodeBlocks, 2275 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 2507 ConstructedInterpolants, 0 QuantifiedInterpolants, 6883 SizeOfPredicates, 0 NumberOfNonLiveVariables, 431 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 16 InterpolantComputations, 15 PerfectInterpolantSequences, 2031/2125 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: 616]: Loop Invariant Derived loop invariant: (((((((((((9 <= a28 && a17 <= 7) && a11 == 0) && a28 <= 10) && a25 == 0) || (((a25 == 1 && 8 <= a17) && a17 <= 8) && a28 <= 10)) || (((8 <= a17 && a17 <= 8) && a28 <= 10) && a25 == 0)) || (((10 <= a28 && a17 <= 7) && a28 <= 10) && a25 == 0)) || ((((a25 == a11 && a25 == 1) && a17 <= 7) && a19 == 1) && a28 <= 7)) || (((a25 == 1 && 8 <= a17) && a17 <= 8) && a19 == 1)) || (((9 <= a28 && a25 == 1) && a17 <= 7) && a28 <= 10)) || ((a17 <= 7 && a19 == 1) && a25 == 0)) || ((((9 <= a28 && a25 == 1) && a17 <= 7) && a11 == 0) && a19 == 1) - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: (((((((((((9 <= a28 && a17 <= 7) && a11 == 0) && a28 <= 10) && a25 == 0) || (((a25 == 1 && 8 <= a17) && a17 <= 8) && a28 <= 10)) || (((8 <= a17 && a17 <= 8) && a28 <= 10) && a25 == 0)) || (((10 <= a28 && a17 <= 7) && a28 <= 10) && a25 == 0)) || ((((a25 == a11 && a25 == 1) && a17 <= 7) && a19 == 1) && a28 <= 7)) || (((a25 == 1 && 8 <= a17) && a17 <= 8) && a19 == 1)) || (((9 <= a28 && a25 == 1) && a17 <= 7) && a28 <= 10)) || ((a17 <= 7 && a19 == 1) && a25 == 0)) || ((((9 <= a28 && a25 == 1) && a17 <= 7) && a11 == 0) && a19 == 1) RESULT: Ultimate proved your program to be correct! [2021-10-13 07:46:47,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4286461-a6f0-433b-858e-c73107f4965b/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...