./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label19.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289b0dbe-fa6a-4602-956e-3fa64d4f446c/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289b0dbe-fa6a-4602-956e-3fa64d4f446c/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289b0dbe-fa6a-4602-956e-3fa64d4f446c/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289b0dbe-fa6a-4602-956e-3fa64d4f446c/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label19.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289b0dbe-fa6a-4602-956e-3fa64d4f446c/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289b0dbe-fa6a-4602-956e-3fa64d4f446c/bin/utaipan-UbGMyvGFUs --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 eadd63632d128e63354140f48e358b613932fbd540e74b83f7baa2b6412d6e8f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:17:52,025 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:17:52,027 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:17:52,068 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:17:52,069 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:17:52,074 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:17:52,076 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:17:52,081 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:17:52,084 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:17:52,091 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:17:52,092 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:17:52,094 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:17:52,095 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:17:52,099 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:17:52,102 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:17:52,108 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:17:52,110 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:17:52,111 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:17:52,115 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:17:52,126 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:17:52,129 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:17:52,133 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:17:52,140 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:17:52,142 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:17:52,153 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:17:52,154 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:17:52,154 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:17:52,157 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:17:52,158 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:17:52,159 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:17:52,160 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:17:52,161 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:17:52,163 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:17:52,165 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:17:52,167 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:17:52,167 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:17:52,168 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:17:52,168 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:17:52,169 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:17:52,170 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:17:52,170 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:17:52,171 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289b0dbe-fa6a-4602-956e-3fa64d4f446c/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 14:17:52,221 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:17:52,222 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:17:52,223 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:17:52,224 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:17:52,224 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:17:52,224 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:17:52,231 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:17:52,231 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:17:52,231 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:17:52,231 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:17:52,233 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:17:52,233 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:17:52,233 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:17:52,234 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:17:52,234 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:17:52,234 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:17:52,235 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:17:52,235 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:17:52,236 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:17:52,236 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:17:52,236 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:17:52,236 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:17:52,236 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:17:52,237 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:17:52,237 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:17:52,237 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:17:52,237 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:17:52,238 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:17:52,238 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:17:52,240 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:17:52,240 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:17:52,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:17:52,241 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:17:52,241 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:17:52,241 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:17:52,241 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:17:52,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:17:52,242 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:17:52,242 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:17:52,242 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:17:52,242 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_289b0dbe-fa6a-4602-956e-3fa64d4f446c/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289b0dbe-fa6a-4602-956e-3fa64d4f446c/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eadd63632d128e63354140f48e358b613932fbd540e74b83f7baa2b6412d6e8f [2021-11-19 14:17:52,580 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:17:52,628 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:17:52,631 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:17:52,633 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:17:52,634 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:17:52,636 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289b0dbe-fa6a-4602-956e-3fa64d4f446c/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/eca-rers2012/Problem02_label19.c [2021-11-19 14:17:52,719 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289b0dbe-fa6a-4602-956e-3fa64d4f446c/bin/utaipan-UbGMyvGFUs/data/28d1dd180/e500dc932f144c1889725007807a993d/FLAGa228ec319 [2021-11-19 14:17:53,324 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:17:53,325 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289b0dbe-fa6a-4602-956e-3fa64d4f446c/sv-benchmarks/c/eca-rers2012/Problem02_label19.c [2021-11-19 14:17:53,339 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289b0dbe-fa6a-4602-956e-3fa64d4f446c/bin/utaipan-UbGMyvGFUs/data/28d1dd180/e500dc932f144c1889725007807a993d/FLAGa228ec319 [2021-11-19 14:17:53,608 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289b0dbe-fa6a-4602-956e-3fa64d4f446c/bin/utaipan-UbGMyvGFUs/data/28d1dd180/e500dc932f144c1889725007807a993d [2021-11-19 14:17:53,610 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:17:53,612 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:17:53,613 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:17:53,614 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:17:53,617 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:17:53,618 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:17:53" (1/1) ... [2021-11-19 14:17:53,619 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32355393 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:17:53, skipping insertion in model container [2021-11-19 14:17:53,620 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:17:53" (1/1) ... [2021-11-19 14:17:53,626 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:17:53,674 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:17:54,006 WARN L230 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_289b0dbe-fa6a-4602-956e-3fa64d4f446c/sv-benchmarks/c/eca-rers2012/Problem02_label19.c[15877,15890] [2021-11-19 14:17:54,053 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:17:54,066 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:17:54,162 WARN L230 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_289b0dbe-fa6a-4602-956e-3fa64d4f446c/sv-benchmarks/c/eca-rers2012/Problem02_label19.c[15877,15890] [2021-11-19 14:17:54,186 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:17:54,214 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:17:54,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:17:54 WrapperNode [2021-11-19 14:17:54,215 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:17:54,216 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:17:54,216 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:17:54,217 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:17:54,238 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:17:54" (1/1) ... [2021-11-19 14:17:54,261 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:17:54" (1/1) ... [2021-11-19 14:17:54,346 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 668 [2021-11-19 14:17:54,347 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:17:54,348 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:17:54,348 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:17:54,348 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:17:54,357 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:17:54" (1/1) ... [2021-11-19 14:17:54,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:17:54" (1/1) ... [2021-11-19 14:17:54,367 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:17:54" (1/1) ... [2021-11-19 14:17:54,379 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:17:54" (1/1) ... [2021-11-19 14:17:54,420 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:17:54" (1/1) ... [2021-11-19 14:17:54,430 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:17:54" (1/1) ... [2021-11-19 14:17:54,438 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:17:54" (1/1) ... [2021-11-19 14:17:54,454 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:17:54,455 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:17:54,456 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:17:54,456 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:17:54,457 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:17:54" (1/1) ... [2021-11-19 14:17:54,465 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:17:54,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289b0dbe-fa6a-4602-956e-3fa64d4f446c/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:17:54,496 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289b0dbe-fa6a-4602-956e-3fa64d4f446c/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:17:54,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289b0dbe-fa6a-4602-956e-3fa64d4f446c/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:17:54,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:17:54,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 14:17:54,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:17:54,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:17:54,657 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:17:54,658 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:17:55,646 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:17:55,850 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:17:55,851 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 14:17:55,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:17:55 BoogieIcfgContainer [2021-11-19 14:17:55,854 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:17:55,856 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:17:55,856 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:17:55,862 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:17:55,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:17:53" (1/3) ... [2021-11-19 14:17:55,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d4a42b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:17:55, skipping insertion in model container [2021-11-19 14:17:55,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:17:54" (2/3) ... [2021-11-19 14:17:55,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d4a42b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:17:55, skipping insertion in model container [2021-11-19 14:17:55,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:17:55" (3/3) ... [2021-11-19 14:17:55,868 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label19.c [2021-11-19 14:17:55,877 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:17:55,878 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 14:17:55,948 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:17:55,960 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 14:17:55,960 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 14:17:55,982 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) [2021-11-19 14:17:56,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-19 14:17:56,001 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:17:56,002 INFO L514 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] [2021-11-19 14:17:56,003 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:17:56,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:17:56,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1814571476, now seen corresponding path program 1 times [2021-11-19 14:17:56,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:17:56,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237400653] [2021-11-19 14:17:56,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:17:56,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:17:56,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:17:56,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:17:56,457 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:17:56,458 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237400653] [2021-11-19 14:17:56,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237400653] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:17:56,459 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:17:56,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-19 14:17:56,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975272483] [2021-11-19 14:17:56,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:17:56,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:17:56,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:17:56,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:17:56,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:17:56,509 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) [2021-11-19 14:17:57,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:17:57,051 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2021-11-19 14:17:57,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:17:57,056 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 [2021-11-19 14:17:57,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:17:57,075 INFO L225 Difference]: With dead ends: 251 [2021-11-19 14:17:57,076 INFO L226 Difference]: Without dead ends: 163 [2021-11-19 14:17:57,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:17:57,085 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 58 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:17:57,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 11 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 14:17:57,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-11-19 14:17:57,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2021-11-19 14:17:57,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.9320987654320987) internal successors, (313), 162 states have internal predecessors, (313), 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) [2021-11-19 14:17:57,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 313 transitions. [2021-11-19 14:17:57,164 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 313 transitions. Word has length 80 [2021-11-19 14:17:57,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:17:57,166 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 313 transitions. [2021-11-19 14:17:57,166 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) [2021-11-19 14:17:57,167 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 313 transitions. [2021-11-19 14:17:57,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-19 14:17:57,174 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:17:57,174 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:17:57,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 14:17:57,176 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:17:57,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:17:57,179 INFO L85 PathProgramCache]: Analyzing trace with hash -329026394, now seen corresponding path program 1 times [2021-11-19 14:17:57,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:17:57,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843206707] [2021-11-19 14:17:57,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:17:57,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:17:57,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:17:57,260 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:17:57,261 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:17:57,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843206707] [2021-11-19 14:17:57,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843206707] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:17:57,261 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:17:57,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-19 14:17:57,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438106175] [2021-11-19 14:17:57,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:17:57,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:17:57,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:17:57,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:17:57,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:17:57,265 INFO L87 Difference]: Start difference. First operand 163 states and 313 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:17:57,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:17:57,670 INFO L93 Difference]: Finished difference Result 487 states and 937 transitions. [2021-11-19 14:17:57,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:17:57,670 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-19 14:17:57,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:17:57,673 INFO L225 Difference]: With dead ends: 487 [2021-11-19 14:17:57,673 INFO L226 Difference]: Without dead ends: 325 [2021-11-19 14:17:57,675 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:17:57,677 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 115 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:17:57,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 20 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 14:17:57,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2021-11-19 14:17:57,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 323. [2021-11-19 14:17:57,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 322 states have (on average 1.84472049689441) internal successors, (594), 322 states have internal predecessors, (594), 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) [2021-11-19 14:17:57,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 594 transitions. [2021-11-19 14:17:57,718 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 594 transitions. Word has length 91 [2021-11-19 14:17:57,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:17:57,721 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 594 transitions. [2021-11-19 14:17:57,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:17:57,721 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 594 transitions. [2021-11-19 14:17:57,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-19 14:17:57,724 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:17:57,724 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:17:57,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 14:17:57,725 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:17:57,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:17:57,726 INFO L85 PathProgramCache]: Analyzing trace with hash -87629295, now seen corresponding path program 1 times [2021-11-19 14:17:57,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:17:57,726 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468548447] [2021-11-19 14:17:57,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:17:57,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:17:57,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:17:57,787 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-19 14:17:57,787 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:17:57,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468548447] [2021-11-19 14:17:57,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468548447] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:17:57,788 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:17:57,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-19 14:17:57,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692821740] [2021-11-19 14:17:57,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:17:57,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:17:57,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:17:57,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:17:57,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:17:57,791 INFO L87 Difference]: Start difference. First operand 323 states and 594 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:17:58,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:17:58,171 INFO L93 Difference]: Finished difference Result 885 states and 1638 transitions. [2021-11-19 14:17:58,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:17:58,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-19 14:17:58,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:17:58,175 INFO L225 Difference]: With dead ends: 885 [2021-11-19 14:17:58,175 INFO L226 Difference]: Without dead ends: 563 [2021-11-19 14:17:58,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:17:58,179 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 78 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:17:58,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 66 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 14:17:58,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2021-11-19 14:17:58,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 483. [2021-11-19 14:17:58,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.616182572614108) internal successors, (779), 482 states have internal predecessors, (779), 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) [2021-11-19 14:17:58,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 779 transitions. [2021-11-19 14:17:58,213 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 779 transitions. Word has length 95 [2021-11-19 14:17:58,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:17:58,214 INFO L470 AbstractCegarLoop]: Abstraction has 483 states and 779 transitions. [2021-11-19 14:17:58,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:17:58,214 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 779 transitions. [2021-11-19 14:17:58,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-19 14:17:58,227 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:17:58,228 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:17:58,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-19 14:17:58,229 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:17:58,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:17:58,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1540141966, now seen corresponding path program 1 times [2021-11-19 14:17:58,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:17:58,231 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187704580] [2021-11-19 14:17:58,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:17:58,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:17:58,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:17:58,298 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-19 14:17:58,298 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:17:58,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187704580] [2021-11-19 14:17:58,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187704580] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:17:58,299 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:17:58,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 14:17:58,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179062935] [2021-11-19 14:17:58,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:17:58,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:17:58,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:17:58,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:17:58,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:17:58,302 INFO L87 Difference]: Start difference. First operand 483 states and 779 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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) [2021-11-19 14:17:58,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:17:58,697 INFO L93 Difference]: Finished difference Result 1205 states and 2008 transitions. [2021-11-19 14:17:58,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:17:58,699 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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 100 [2021-11-19 14:17:58,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:17:58,704 INFO L225 Difference]: With dead ends: 1205 [2021-11-19 14:17:58,704 INFO L226 Difference]: Without dead ends: 723 [2021-11-19 14:17:58,705 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:17:58,706 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 77 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:17:58,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 139 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 14:17:58,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2021-11-19 14:17:58,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 643. [2021-11-19 14:17:58,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 642 states have (on average 1.5093457943925233) internal successors, (969), 642 states have internal predecessors, (969), 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) [2021-11-19 14:17:58,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 969 transitions. [2021-11-19 14:17:58,740 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 969 transitions. Word has length 100 [2021-11-19 14:17:58,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:17:58,740 INFO L470 AbstractCegarLoop]: Abstraction has 643 states and 969 transitions. [2021-11-19 14:17:58,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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) [2021-11-19 14:17:58,741 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 969 transitions. [2021-11-19 14:17:58,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-19 14:17:58,744 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:17:58,744 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:17:58,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-19 14:17:58,745 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:17:58,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:17:58,746 INFO L85 PathProgramCache]: Analyzing trace with hash -163982494, now seen corresponding path program 1 times [2021-11-19 14:17:58,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:17:58,746 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109416549] [2021-11-19 14:17:58,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:17:58,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:17:58,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:17:58,819 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-19 14:17:58,819 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:17:58,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109416549] [2021-11-19 14:17:58,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109416549] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:17:58,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:17:58,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-19 14:17:58,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258578442] [2021-11-19 14:17:58,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:17:58,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:17:58,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:17:58,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:17:58,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:17:58,825 INFO L87 Difference]: Start difference. First operand 643 states and 969 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:17:59,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:17:59,198 INFO L93 Difference]: Finished difference Result 1765 states and 2719 transitions. [2021-11-19 14:17:59,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:17:59,199 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-11-19 14:17:59,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:17:59,205 INFO L225 Difference]: With dead ends: 1765 [2021-11-19 14:17:59,206 INFO L226 Difference]: Without dead ends: 1123 [2021-11-19 14:17:59,207 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:17:59,208 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 111 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:17:59,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 28 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 14:17:59,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2021-11-19 14:17:59,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 1123. [2021-11-19 14:17:59,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 1122 states have (on average 1.4536541889483066) internal successors, (1631), 1122 states have internal predecessors, (1631), 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) [2021-11-19 14:17:59,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1631 transitions. [2021-11-19 14:17:59,241 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1631 transitions. Word has length 101 [2021-11-19 14:17:59,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:17:59,242 INFO L470 AbstractCegarLoop]: Abstraction has 1123 states and 1631 transitions. [2021-11-19 14:17:59,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:17:59,242 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1631 transitions. [2021-11-19 14:17:59,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-19 14:17:59,245 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:17:59,246 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:17:59,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-19 14:17:59,246 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:17:59,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:17:59,247 INFO L85 PathProgramCache]: Analyzing trace with hash -742250364, now seen corresponding path program 1 times [2021-11-19 14:17:59,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:17:59,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816916724] [2021-11-19 14:17:59,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:17:59,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:17:59,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:17:59,285 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-19 14:17:59,286 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:17:59,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816916724] [2021-11-19 14:17:59,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816916724] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:17:59,287 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:17:59,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 14:17:59,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070095464] [2021-11-19 14:17:59,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:17:59,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:17:59,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:17:59,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:17:59,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:17:59,289 INFO L87 Difference]: Start difference. First operand 1123 states and 1631 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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) [2021-11-19 14:17:59,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:17:59,637 INFO L93 Difference]: Finished difference Result 2645 states and 3802 transitions. [2021-11-19 14:17:59,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:17:59,638 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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 104 [2021-11-19 14:17:59,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:17:59,647 INFO L225 Difference]: With dead ends: 2645 [2021-11-19 14:17:59,647 INFO L226 Difference]: Without dead ends: 1523 [2021-11-19 14:17:59,649 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:17:59,650 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 78 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:17:59,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 147 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 14:17:59,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2021-11-19 14:17:59,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 1443. [2021-11-19 14:17:59,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1443 states, 1442 states have (on average 1.3703190013869626) internal successors, (1976), 1442 states have internal predecessors, (1976), 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) [2021-11-19 14:17:59,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1443 states to 1443 states and 1976 transitions. [2021-11-19 14:17:59,717 INFO L78 Accepts]: Start accepts. Automaton has 1443 states and 1976 transitions. Word has length 104 [2021-11-19 14:17:59,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:17:59,717 INFO L470 AbstractCegarLoop]: Abstraction has 1443 states and 1976 transitions. [2021-11-19 14:17:59,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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) [2021-11-19 14:17:59,717 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states and 1976 transitions. [2021-11-19 14:17:59,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-19 14:17:59,721 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:17:59,722 INFO L514 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] [2021-11-19 14:17:59,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-19 14:17:59,722 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:17:59,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:17:59,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1486186536, now seen corresponding path program 1 times [2021-11-19 14:17:59,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:17:59,723 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006533956] [2021-11-19 14:17:59,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:17:59,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:17:59,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:17:59,781 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-19 14:17:59,781 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:17:59,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006533956] [2021-11-19 14:17:59,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006533956] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:17:59,782 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:17:59,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 14:17:59,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852316658] [2021-11-19 14:17:59,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:17:59,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:17:59,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:17:59,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:17:59,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:17:59,784 INFO L87 Difference]: Start difference. First operand 1443 states and 1976 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) [2021-11-19 14:18:00,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:18:00,128 INFO L93 Difference]: Finished difference Result 2885 states and 3951 transitions. [2021-11-19 14:18:00,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:18:00,129 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 [2021-11-19 14:18:00,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:18:00,137 INFO L225 Difference]: With dead ends: 2885 [2021-11-19 14:18:00,138 INFO L226 Difference]: Without dead ends: 1443 [2021-11-19 14:18:00,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:18:00,143 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 79 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:18:00,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 16 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 14:18:00,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1443 states. [2021-11-19 14:18:00,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1443 to 1443. [2021-11-19 14:18:00,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1443 states, 1442 states have (on average 1.3044382801664356) internal successors, (1881), 1442 states have internal predecessors, (1881), 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) [2021-11-19 14:18:00,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1443 states to 1443 states and 1881 transitions. [2021-11-19 14:18:00,182 INFO L78 Accepts]: Start accepts. Automaton has 1443 states and 1881 transitions. Word has length 135 [2021-11-19 14:18:00,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:18:00,184 INFO L470 AbstractCegarLoop]: Abstraction has 1443 states and 1881 transitions. [2021-11-19 14:18:00,184 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) [2021-11-19 14:18:00,184 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states and 1881 transitions. [2021-11-19 14:18:00,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-19 14:18:00,188 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:18:00,189 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:18:00,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-19 14:18:00,189 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:18:00,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:18:00,191 INFO L85 PathProgramCache]: Analyzing trace with hash 497078050, now seen corresponding path program 1 times [2021-11-19 14:18:00,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:18:00,191 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137267627] [2021-11-19 14:18:00,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:18:00,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:18:00,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:18:00,320 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 64 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-19 14:18:00,320 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:18:00,320 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137267627] [2021-11-19 14:18:00,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137267627] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 14:18:00,321 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118014946] [2021-11-19 14:18:00,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:18:00,321 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:18:00,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289b0dbe-fa6a-4602-956e-3fa64d4f446c/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:18:00,327 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289b0dbe-fa6a-4602-956e-3fa64d4f446c/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:18:00,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289b0dbe-fa6a-4602-956e-3fa64d4f446c/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-19 14:18:00,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:18:00,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:18:00,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:18:00,899 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-19 14:18:00,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:18:01,262 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-19 14:18:01,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118014946] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:18:01,263 INFO L186 FreeRefinementEngine]: Found 2 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:18:01,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2021-11-19 14:18:01,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426228314] [2021-11-19 14:18:01,264 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:18:01,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:18:01,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:18:01,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:18:01,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:18:01,267 INFO L87 Difference]: Start difference. First operand 1443 states and 1881 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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) [2021-11-19 14:18:01,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:18:01,631 INFO L93 Difference]: Finished difference Result 3125 states and 4182 transitions. [2021-11-19 14:18:01,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:18:01,632 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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 139 [2021-11-19 14:18:01,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:18:01,645 INFO L225 Difference]: With dead ends: 3125 [2021-11-19 14:18:01,645 INFO L226 Difference]: Without dead ends: 1683 [2021-11-19 14:18:01,649 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 275 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:18:01,651 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 9 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:18:01,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 131 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 14:18:01,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1683 states. [2021-11-19 14:18:01,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1683 to 1523. [2021-11-19 14:18:01,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1523 states, 1522 states have (on average 1.281208935611038) internal successors, (1950), 1522 states have internal predecessors, (1950), 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) [2021-11-19 14:18:01,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 1950 transitions. [2021-11-19 14:18:01,693 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 1950 transitions. Word has length 139 [2021-11-19 14:18:01,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:18:01,695 INFO L470 AbstractCegarLoop]: Abstraction has 1523 states and 1950 transitions. [2021-11-19 14:18:01,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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) [2021-11-19 14:18:01,695 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 1950 transitions. [2021-11-19 14:18:01,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-19 14:18:01,699 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:18:01,700 INFO L514 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, 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] [2021-11-19 14:18:01,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289b0dbe-fa6a-4602-956e-3fa64d4f446c/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-19 14:18:01,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289b0dbe-fa6a-4602-956e-3fa64d4f446c/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:18:01,920 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:18:01,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:18:01,921 INFO L85 PathProgramCache]: Analyzing trace with hash 24297815, now seen corresponding path program 1 times [2021-11-19 14:18:01,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:18:01,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595841474] [2021-11-19 14:18:01,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:18:01,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:18:01,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:18:02,007 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:18:02,008 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:18:02,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595841474] [2021-11-19 14:18:02,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595841474] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:18:02,008 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:18:02,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 14:18:02,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349674683] [2021-11-19 14:18:02,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:18:02,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:18:02,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:18:02,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:18:02,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:18:02,011 INFO L87 Difference]: Start difference. First operand 1523 states and 1950 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 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) [2021-11-19 14:18:02,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:18:02,363 INFO L93 Difference]: Finished difference Result 3445 states and 4524 transitions. [2021-11-19 14:18:02,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:18:02,364 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 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 152 [2021-11-19 14:18:02,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:18:02,375 INFO L225 Difference]: With dead ends: 3445 [2021-11-19 14:18:02,375 INFO L226 Difference]: Without dead ends: 1923 [2021-11-19 14:18:02,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:18:02,378 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 55 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:18:02,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 146 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 14:18:02,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1923 states. [2021-11-19 14:18:02,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1923 to 1923. [2021-11-19 14:18:02,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1923 states, 1922 states have (on average 1.2851196670135276) internal successors, (2470), 1922 states have internal predecessors, (2470), 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) [2021-11-19 14:18:02,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1923 states to 1923 states and 2470 transitions. [2021-11-19 14:18:02,426 INFO L78 Accepts]: Start accepts. Automaton has 1923 states and 2470 transitions. Word has length 152 [2021-11-19 14:18:02,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:18:02,426 INFO L470 AbstractCegarLoop]: Abstraction has 1923 states and 2470 transitions. [2021-11-19 14:18:02,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 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) [2021-11-19 14:18:02,427 INFO L276 IsEmpty]: Start isEmpty. Operand 1923 states and 2470 transitions. [2021-11-19 14:18:02,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-11-19 14:18:02,432 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:18:02,433 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:18:02,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-19 14:18:02,433 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:18:02,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:18:02,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1166478161, now seen corresponding path program 1 times [2021-11-19 14:18:02,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:18:02,434 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559127474] [2021-11-19 14:18:02,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:18:02,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:18:02,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:18:02,494 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-11-19 14:18:02,495 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:18:02,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559127474] [2021-11-19 14:18:02,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559127474] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:18:02,495 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:18:02,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-19 14:18:02,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970057410] [2021-11-19 14:18:02,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:18:02,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:18:02,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:18:02,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:18:02,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:18:02,498 INFO L87 Difference]: Start difference. First operand 1923 states and 2470 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:18:02,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:18:02,681 INFO L93 Difference]: Finished difference Result 3365 states and 4297 transitions. [2021-11-19 14:18:02,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:18:02,682 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2021-11-19 14:18:02,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:18:02,689 INFO L225 Difference]: With dead ends: 3365 [2021-11-19 14:18:02,689 INFO L226 Difference]: Without dead ends: 1363 [2021-11-19 14:18:02,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:18:02,693 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 99 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:18:02,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 4 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:18:02,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1363 states. [2021-11-19 14:18:02,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1363 to 883. [2021-11-19 14:18:02,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 882 states have (on average 1.2380952380952381) internal successors, (1092), 882 states have internal predecessors, (1092), 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) [2021-11-19 14:18:02,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1092 transitions. [2021-11-19 14:18:02,728 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1092 transitions. Word has length 177 [2021-11-19 14:18:02,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:18:02,729 INFO L470 AbstractCegarLoop]: Abstraction has 883 states and 1092 transitions. [2021-11-19 14:18:02,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:18:02,729 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1092 transitions. [2021-11-19 14:18:02,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-11-19 14:18:02,733 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:18:02,733 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-19 14:18:02,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-19 14:18:02,734 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:18:02,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:18:02,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1312722037, now seen corresponding path program 1 times [2021-11-19 14:18:02,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:18:02,735 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434118320] [2021-11-19 14:18:02,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:18:02,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:18:02,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:18:02,837 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-11-19 14:18:02,837 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:18:02,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434118320] [2021-11-19 14:18:02,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434118320] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:18:02,838 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:18:02,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 14:18:02,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642909914] [2021-11-19 14:18:02,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:18:02,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:18:02,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:18:02,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:18:02,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:18:02,841 INFO L87 Difference]: Start difference. First operand 883 states and 1092 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 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) [2021-11-19 14:18:03,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:18:03,116 INFO L93 Difference]: Finished difference Result 1845 states and 2280 transitions. [2021-11-19 14:18:03,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:18:03,117 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 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 191 [2021-11-19 14:18:03,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:18:03,121 INFO L225 Difference]: With dead ends: 1845 [2021-11-19 14:18:03,122 INFO L226 Difference]: Without dead ends: 803 [2021-11-19 14:18:03,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:18:03,124 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 35 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:18:03,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 132 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:18:03,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2021-11-19 14:18:03,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 803. [2021-11-19 14:18:03,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 802 states have (on average 1.2044887780548628) internal successors, (966), 802 states have internal predecessors, (966), 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) [2021-11-19 14:18:03,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 966 transitions. [2021-11-19 14:18:03,145 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 966 transitions. Word has length 191 [2021-11-19 14:18:03,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:18:03,146 INFO L470 AbstractCegarLoop]: Abstraction has 803 states and 966 transitions. [2021-11-19 14:18:03,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 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) [2021-11-19 14:18:03,146 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 966 transitions. [2021-11-19 14:18:03,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-11-19 14:18:03,150 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:18:03,151 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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] [2021-11-19 14:18:03,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-19 14:18:03,151 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:18:03,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:18:03,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1393643458, now seen corresponding path program 1 times [2021-11-19 14:18:03,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:18:03,152 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333729640] [2021-11-19 14:18:03,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:18:03,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:18:03,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:18:03,239 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 221 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2021-11-19 14:18:03,239 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:18:03,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333729640] [2021-11-19 14:18:03,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333729640] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:18:03,240 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:18:03,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 14:18:03,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757005694] [2021-11-19 14:18:03,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:18:03,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:18:03,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:18:03,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:18:03,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:18:03,242 INFO L87 Difference]: Start difference. First operand 803 states and 966 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:18:03,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:18:03,521 INFO L93 Difference]: Finished difference Result 1843 states and 2274 transitions. [2021-11-19 14:18:03,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:18:03,522 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 226 [2021-11-19 14:18:03,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:18:03,522 INFO L225 Difference]: With dead ends: 1843 [2021-11-19 14:18:03,523 INFO L226 Difference]: Without dead ends: 0 [2021-11-19 14:18:03,525 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:18:03,525 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 62 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:18:03,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 101 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 14:18:03,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-19 14:18:03,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-19 14:18:03,527 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) [2021-11-19 14:18:03,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-19 14:18:03,527 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 226 [2021-11-19 14:18:03,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:18:03,528 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-19 14:18:03,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:18:03,528 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-19 14:18:03,528 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-19 14:18:03,531 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-19 14:18:03,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-19 14:18:03,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-19 14:18:04,206 INFO L858 garLoopResultBuilder]: For program point L301(lines 301 423) no Hoare annotation was computed. [2021-11-19 14:18:04,206 INFO L858 garLoopResultBuilder]: For program point L235(lines 235 423) no Hoare annotation was computed. [2021-11-19 14:18:04,206 INFO L858 garLoopResultBuilder]: For program point L169(lines 169 423) no Hoare annotation was computed. [2021-11-19 14:18:04,206 INFO L858 garLoopResultBuilder]: For program point L303(lines 303 423) no Hoare annotation was computed. [2021-11-19 14:18:04,206 INFO L858 garLoopResultBuilder]: For program point L105(lines 105 423) no Hoare annotation was computed. [2021-11-19 14:18:04,206 INFO L858 garLoopResultBuilder]: For program point L40(lines 40 423) no Hoare annotation was computed. [2021-11-19 14:18:04,207 INFO L858 garLoopResultBuilder]: For program point L371(lines 371 423) no Hoare annotation was computed. [2021-11-19 14:18:04,207 INFO L858 garLoopResultBuilder]: For program point L307(lines 307 423) no Hoare annotation was computed. [2021-11-19 14:18:04,207 INFO L858 garLoopResultBuilder]: For program point L175(lines 175 423) no Hoare annotation was computed. [2021-11-19 14:18:04,207 INFO L858 garLoopResultBuilder]: For program point L109(lines 109 423) no Hoare annotation was computed. [2021-11-19 14:18:04,207 INFO L858 garLoopResultBuilder]: For program point L242(lines 242 423) no Hoare annotation was computed. [2021-11-19 14:18:04,207 INFO L858 garLoopResultBuilder]: For program point L45(lines 45 423) no Hoare annotation was computed. [2021-11-19 14:18:04,207 INFO L858 garLoopResultBuilder]: For program point L244(lines 244 423) no Hoare annotation was computed. [2021-11-19 14:18:04,207 INFO L858 garLoopResultBuilder]: For program point L179(lines 179 423) no Hoare annotation was computed. [2021-11-19 14:18:04,207 INFO L858 garLoopResultBuilder]: For program point L378(lines 378 423) no Hoare annotation was computed. [2021-11-19 14:18:04,208 INFO L858 garLoopResultBuilder]: For program point L48(lines 48 423) no Hoare annotation was computed. [2021-11-19 14:18:04,208 INFO L858 garLoopResultBuilder]: For program point L247(lines 247 423) no Hoare annotation was computed. [2021-11-19 14:18:04,208 INFO L858 garLoopResultBuilder]: For program point L116(lines 116 423) no Hoare annotation was computed. [2021-11-19 14:18:04,208 INFO L858 garLoopResultBuilder]: For program point L52(lines 52 423) no Hoare annotation was computed. [2021-11-19 14:18:04,208 INFO L858 garLoopResultBuilder]: For program point L185(lines 185 423) no Hoare annotation was computed. [2021-11-19 14:18:04,208 INFO L858 garLoopResultBuilder]: For program point L385(lines 385 423) no Hoare annotation was computed. [2021-11-19 14:18:04,208 INFO L858 garLoopResultBuilder]: For program point L319(lines 319 423) no Hoare annotation was computed. [2021-11-19 14:18:04,208 INFO L858 garLoopResultBuilder]: For program point L189(lines 189 423) no Hoare annotation was computed. [2021-11-19 14:18:04,208 INFO L858 garLoopResultBuilder]: For program point L123(lines 123 423) no Hoare annotation was computed. [2021-11-19 14:18:04,209 INFO L858 garLoopResultBuilder]: For program point L57(lines 57 423) no Hoare annotation was computed. [2021-11-19 14:18:04,209 INFO L858 garLoopResultBuilder]: For program point L454-1(lines 39 608) no Hoare annotation was computed. [2021-11-19 14:18:04,209 INFO L858 garLoopResultBuilder]: For program point L388(lines 388 423) no Hoare annotation was computed. [2021-11-19 14:18:04,209 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-19 14:18:04,209 INFO L858 garLoopResultBuilder]: For program point L390(lines 390 423) no Hoare annotation was computed. [2021-11-19 14:18:04,209 INFO L858 garLoopResultBuilder]: For program point L324(lines 324 423) no Hoare annotation was computed. [2021-11-19 14:18:04,209 INFO L858 garLoopResultBuilder]: For program point L258(lines 258 423) no Hoare annotation was computed. [2021-11-19 14:18:04,209 INFO L858 garLoopResultBuilder]: For program point L60(lines 60 423) no Hoare annotation was computed. [2021-11-19 14:18:04,209 INFO L858 garLoopResultBuilder]: For program point L457-1(lines 39 608) no Hoare annotation was computed. [2021-11-19 14:18:04,210 INFO L858 garLoopResultBuilder]: For program point L458(line 458) no Hoare annotation was computed. [2021-11-19 14:18:04,210 INFO L858 garLoopResultBuilder]: For program point L195(lines 195 423) no Hoare annotation was computed. [2021-11-19 14:18:04,210 INFO L858 garLoopResultBuilder]: For program point L129(lines 129 423) no Hoare annotation was computed. [2021-11-19 14:18:04,210 INFO L858 garLoopResultBuilder]: For program point L64(lines 64 423) no Hoare annotation was computed. [2021-11-19 14:18:04,210 INFO L858 garLoopResultBuilder]: For program point L263(lines 263 423) no Hoare annotation was computed. [2021-11-19 14:18:04,210 INFO L858 garLoopResultBuilder]: For program point L197(lines 197 423) no Hoare annotation was computed. [2021-11-19 14:18:04,210 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 458) no Hoare annotation was computed. [2021-11-19 14:18:04,210 INFO L858 garLoopResultBuilder]: For program point L199(lines 199 423) no Hoare annotation was computed. [2021-11-19 14:18:04,210 INFO L858 garLoopResultBuilder]: For program point L133(lines 133 423) no Hoare annotation was computed. [2021-11-19 14:18:04,211 INFO L858 garLoopResultBuilder]: For program point L399(lines 399 423) no Hoare annotation was computed. [2021-11-19 14:18:04,211 INFO L858 garLoopResultBuilder]: For program point L201(lines 201 423) no Hoare annotation was computed. [2021-11-19 14:18:04,211 INFO L858 garLoopResultBuilder]: For program point L69(lines 69 423) no Hoare annotation was computed. [2021-11-19 14:18:04,211 INFO L858 garLoopResultBuilder]: For program point L269(lines 269 423) no Hoare annotation was computed. [2021-11-19 14:18:04,211 INFO L858 garLoopResultBuilder]: For program point L204(lines 204 423) no Hoare annotation was computed. [2021-11-19 14:18:04,211 INFO L858 garLoopResultBuilder]: For program point L271(lines 271 423) no Hoare annotation was computed. [2021-11-19 14:18:04,211 INFO L858 garLoopResultBuilder]: For program point L404(lines 404 423) no Hoare annotation was computed. [2021-11-19 14:18:04,211 INFO L858 garLoopResultBuilder]: For program point L338(lines 338 423) no Hoare annotation was computed. [2021-11-19 14:18:04,211 INFO L858 garLoopResultBuilder]: For program point L140(lines 140 423) no Hoare annotation was computed. [2021-11-19 14:18:04,211 INFO L858 garLoopResultBuilder]: For program point L75(lines 75 423) no Hoare annotation was computed. [2021-11-19 14:18:04,212 INFO L858 garLoopResultBuilder]: For program point L208(lines 208 423) no Hoare annotation was computed. [2021-11-19 14:18:04,212 INFO L858 garLoopResultBuilder]: For program point L341(lines 341 423) no Hoare annotation was computed. [2021-11-19 14:18:04,212 INFO L858 garLoopResultBuilder]: For program point L408(lines 408 423) no Hoare annotation was computed. [2021-11-19 14:18:04,212 INFO L858 garLoopResultBuilder]: For program point L144(lines 144 423) no Hoare annotation was computed. [2021-11-19 14:18:04,212 INFO L854 garLoopResultBuilder]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse0 (= ~a25~0 1)) (.cse2 (= ~a19~0 1)) (.cse4 (<= 8 ~a17~0)) (.cse1 (<= ~a17~0 8)) (.cse3 (<= ~a28~0 10))) (or (and (<= 11 ~a28~0) .cse0 (= ~a11~0 0) .cse1 .cse2) (and (<= 10 ~a28~0) .cse1 .cse3 .cse2) (and .cse0 .cse4 .cse1 .cse2) (and (<= 9 ~a28~0) .cse0 (<= ~a17~0 7) .cse3) (and (= ~a25~0 ~a11~0) .cse0 .cse1 .cse2 (<= ~a28~0 7)) (and .cse4 .cse1 .cse3) (and .cse1 .cse3 (<= ~a19~0 0)))) [2021-11-19 14:18:04,212 INFO L858 garLoopResultBuilder]: For program point L79(lines 79 423) no Hoare annotation was computed. [2021-11-19 14:18:04,213 INFO L858 garLoopResultBuilder]: For program point L212(lines 212 423) no Hoare annotation was computed. [2021-11-19 14:18:04,213 INFO L861 garLoopResultBuilder]: At program point L610(lines 610 627) the Hoare annotation is: true [2021-11-19 14:18:04,213 INFO L858 garLoopResultBuilder]: For program point L412(lines 412 423) no Hoare annotation was computed. [2021-11-19 14:18:04,213 INFO L858 garLoopResultBuilder]: For program point L347(lines 347 423) no Hoare annotation was computed. [2021-11-19 14:18:04,213 INFO L858 garLoopResultBuilder]: For program point L149(lines 149 423) no Hoare annotation was computed. [2021-11-19 14:18:04,213 INFO L858 garLoopResultBuilder]: For program point L414(lines 414 423) no Hoare annotation was computed. [2021-11-19 14:18:04,213 INFO L858 garLoopResultBuilder]: For program point L84(lines 84 423) no Hoare annotation was computed. [2021-11-19 14:18:04,213 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-19 14:18:04,213 INFO L858 garLoopResultBuilder]: For program point L417(lines 417 423) no Hoare annotation was computed. [2021-11-19 14:18:04,214 INFO L858 garLoopResultBuilder]: For program point L153(lines 153 423) no Hoare annotation was computed. [2021-11-19 14:18:04,214 INFO L854 garLoopResultBuilder]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse0 (= ~a25~0 1)) (.cse2 (= ~a19~0 1)) (.cse4 (<= 8 ~a17~0)) (.cse1 (<= ~a17~0 8)) (.cse3 (<= ~a28~0 10))) (or (and (<= 11 ~a28~0) .cse0 (= ~a11~0 0) .cse1 .cse2) (and (<= 10 ~a28~0) .cse1 .cse3 .cse2) (and .cse0 .cse4 .cse1 .cse2) (and (<= 9 ~a28~0) .cse0 (<= ~a17~0 7) .cse3) (and (= ~a25~0 ~a11~0) .cse0 .cse1 .cse2 (<= ~a28~0 7)) (and .cse4 .cse1 .cse3) (and .cse1 .cse3 (<= ~a19~0 0)))) [2021-11-19 14:18:04,214 INFO L858 garLoopResultBuilder]: For program point L286(lines 286 423) no Hoare annotation was computed. [2021-11-19 14:18:04,214 INFO L858 garLoopResultBuilder]: For program point L419(lines 419 423) no Hoare annotation was computed. [2021-11-19 14:18:04,214 INFO L858 garLoopResultBuilder]: For program point L222(lines 222 423) no Hoare annotation was computed. [2021-11-19 14:18:04,214 INFO L858 garLoopResultBuilder]: For program point L290(lines 290 423) no Hoare annotation was computed. [2021-11-19 14:18:04,214 INFO L858 garLoopResultBuilder]: For program point L158(lines 158 423) no Hoare annotation was computed. [2021-11-19 14:18:04,214 INFO L858 garLoopResultBuilder]: For program point L92(lines 92 423) no Hoare annotation was computed. [2021-11-19 14:18:04,214 INFO L858 garLoopResultBuilder]: For program point L621(line 621) no Hoare annotation was computed. [2021-11-19 14:18:04,215 INFO L858 garLoopResultBuilder]: For program point L225(lines 225 423) no Hoare annotation was computed. [2021-11-19 14:18:04,215 INFO L858 garLoopResultBuilder]: For program point L359(lines 359 423) no Hoare annotation was computed. [2021-11-19 14:18:04,215 INFO L858 garLoopResultBuilder]: For program point L293(lines 293 423) no Hoare annotation was computed. [2021-11-19 14:18:04,215 INFO L858 garLoopResultBuilder]: For program point L228(lines 228 423) no Hoare annotation was computed. [2021-11-19 14:18:04,215 INFO L858 garLoopResultBuilder]: For program point L296(lines 296 423) no Hoare annotation was computed. [2021-11-19 14:18:04,215 INFO L858 garLoopResultBuilder]: For program point L164(lines 164 423) no Hoare annotation was computed. [2021-11-19 14:18:04,215 INFO L858 garLoopResultBuilder]: For program point L364(lines 364 423) no Hoare annotation was computed. [2021-11-19 14:18:04,215 INFO L858 garLoopResultBuilder]: For program point L233(lines 233 423) no Hoare annotation was computed. [2021-11-19 14:18:04,215 INFO L858 garLoopResultBuilder]: For program point L101(lines 101 423) no Hoare annotation was computed. [2021-11-19 14:18:04,219 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:18:04,221 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 14:18:04,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 02:18:04 BoogieIcfgContainer [2021-11-19 14:18:04,240 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 14:18:04,240 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 14:18:04,241 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 14:18:04,241 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 14:18:04,241 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:17:55" (3/4) ... [2021-11-19 14:18:04,244 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-19 14:18:04,266 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 116 nodes and edges [2021-11-19 14:18:04,268 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2021-11-19 14:18:04,269 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-11-19 14:18:04,271 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-11-19 14:18:04,378 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289b0dbe-fa6a-4602-956e-3fa64d4f446c/bin/utaipan-UbGMyvGFUs/witness.graphml [2021-11-19 14:18:04,378 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 14:18:04,379 INFO L158 Benchmark]: Toolchain (without parser) took 10767.20ms. Allocated memory was 119.5MB in the beginning and 174.1MB in the end (delta: 54.5MB). Free memory was 80.4MB in the beginning and 91.1MB in the end (delta: -10.7MB). Peak memory consumption was 42.1MB. Max. memory is 16.1GB. [2021-11-19 14:18:04,379 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 119.5MB. Free memory was 99.0MB in the beginning and 98.9MB in the end (delta: 70.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:18:04,380 INFO L158 Benchmark]: CACSL2BoogieTranslator took 602.17ms. Allocated memory is still 119.5MB. Free memory was 80.3MB in the beginning and 78.9MB in the end (delta: 1.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 14:18:04,380 INFO L158 Benchmark]: Boogie Procedure Inliner took 130.67ms. Allocated memory is still 119.5MB. Free memory was 78.9MB in the beginning and 73.5MB in the end (delta: 5.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-19 14:18:04,380 INFO L158 Benchmark]: Boogie Preprocessor took 107.17ms. Allocated memory is still 119.5MB. Free memory was 73.5MB in the beginning and 69.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-19 14:18:04,381 INFO L158 Benchmark]: RCFGBuilder took 1398.61ms. Allocated memory was 119.5MB in the beginning and 144.7MB in the end (delta: 25.2MB). Free memory was 69.3MB in the beginning and 104.0MB in the end (delta: -34.8MB). Peak memory consumption was 39.0MB. Max. memory is 16.1GB. [2021-11-19 14:18:04,381 INFO L158 Benchmark]: TraceAbstraction took 8383.95ms. Allocated memory was 144.7MB in the beginning and 174.1MB in the end (delta: 29.4MB). Free memory was 103.2MB in the beginning and 106.9MB in the end (delta: -3.6MB). Peak memory consumption was 93.4MB. Max. memory is 16.1GB. [2021-11-19 14:18:04,382 INFO L158 Benchmark]: Witness Printer took 137.82ms. Allocated memory is still 174.1MB. Free memory was 106.9MB in the beginning and 91.1MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-19 14:18:04,384 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 119.5MB. Free memory was 99.0MB in the beginning and 98.9MB in the end (delta: 70.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 602.17ms. Allocated memory is still 119.5MB. Free memory was 80.3MB in the beginning and 78.9MB in the end (delta: 1.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 130.67ms. Allocated memory is still 119.5MB. Free memory was 78.9MB in the beginning and 73.5MB in the end (delta: 5.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 107.17ms. Allocated memory is still 119.5MB. Free memory was 73.5MB in the beginning and 69.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1398.61ms. Allocated memory was 119.5MB in the beginning and 144.7MB in the end (delta: 25.2MB). Free memory was 69.3MB in the beginning and 104.0MB in the end (delta: -34.8MB). Peak memory consumption was 39.0MB. Max. memory is 16.1GB. * TraceAbstraction took 8383.95ms. Allocated memory was 144.7MB in the beginning and 174.1MB in the end (delta: 29.4MB). Free memory was 103.2MB in the beginning and 106.9MB in the end (delta: -3.6MB). Peak memory consumption was 93.4MB. Max. memory is 16.1GB. * Witness Printer took 137.82ms. Allocated memory is still 174.1MB. Free memory was 106.9MB in the beginning and 91.1MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 458]: 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: 8.3s, OverallIterations: 12, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 4.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 856 SdHoareTripleChecker+Valid, 3.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 856 mSDsluCounter, 941 SdHoareTripleChecker+Invalid, 3.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 51 mSDsCounter, 672 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2779 IncrementalHoareTripleChecker+Invalid, 3451 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 672 mSolverCounterUnsat, 891 mSDtfsCounter, 2779 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 308 GetRequests, 292 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1923occurred in iteration=9, InterpolantAutomatonStates: 36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 12 MinimizatonAttempts, 882 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 41 NumberOfFragments, 185 HoareAnnotationTreeSize, 3 FomulaSimplifications, 18 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 3 FomulaSimplificationsInter, 1116 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 1730 NumberOfCodeBlocks, 1730 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 1855 ConstructedInterpolants, 0 QuantifiedInterpolants, 3379 SizeOfPredicates, 0 NumberOfNonLiveVariables, 311 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 14 InterpolantComputations, 13 PerfectInterpolantSequences, 1373/1381 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: (((((((((11 <= a28 && a25 == 1) && a11 == 0) && a17 <= 8) && a19 == 1) || (((10 <= a28 && a17 <= 8) && a28 <= 10) && a19 == 1)) || (((a25 == 1 && 8 <= a17) && a17 <= 8) && a19 == 1)) || (((9 <= a28 && a25 == 1) && a17 <= 7) && a28 <= 10)) || ((((a25 == a11 && a25 == 1) && a17 <= 8) && a19 == 1) && a28 <= 7)) || ((8 <= a17 && a17 <= 8) && a28 <= 10)) || ((a17 <= 8 && a28 <= 10) && a19 <= 0) - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: (((((((((11 <= a28 && a25 == 1) && a11 == 0) && a17 <= 8) && a19 == 1) || (((10 <= a28 && a17 <= 8) && a28 <= 10) && a19 == 1)) || (((a25 == 1 && 8 <= a17) && a17 <= 8) && a19 == 1)) || (((9 <= a28 && a25 == 1) && a17 <= 7) && a28 <= 10)) || ((((a25 == a11 && a25 == 1) && a17 <= 8) && a19 == 1) && a28 <= 7)) || ((8 <= a17 && a17 <= 8) && a28 <= 10)) || ((a17 <= 8 && a28 <= 10) && a19 <= 0) RESULT: Ultimate proved your program to be correct! [2021-11-19 14:18:04,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289b0dbe-fa6a-4602-956e-3fa64d4f446c/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE