./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe017_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c38d427-fce1-4307-9f39-9f1c1a32cafd/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c38d427-fce1-4307-9f39-9f1c1a32cafd/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c38d427-fce1-4307-9f39-9f1c1a32cafd/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c38d427-fce1-4307-9f39-9f1c1a32cafd/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe017_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c38d427-fce1-4307-9f39-9f1c1a32cafd/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c38d427-fce1-4307-9f39-9f1c1a32cafd/bin/utaipan-9zjyvhn0QE --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f42e8f5213d7b87505465b65029831bd75698bf771428502e6718d43723a660f ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 10:58:52,026 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:58:52,029 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:58:52,085 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:58:52,086 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:58:52,090 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:58:52,092 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:58:52,097 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:58:52,099 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:58:52,105 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:58:52,106 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:58:52,108 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:58:52,109 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:58:52,112 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:58:52,114 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:58:52,118 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:58:52,120 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:58:52,121 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:58:52,123 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:58:52,131 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:58:52,133 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:58:52,135 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:58:52,138 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:58:52,139 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:58:52,148 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:58:52,149 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:58:52,149 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:58:52,151 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:58:52,152 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:58:52,153 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:58:52,154 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:58:52,155 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:58:52,157 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:58:52,158 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:58:52,160 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:58:52,160 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:58:52,161 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:58:52,161 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:58:52,161 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:58:52,162 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:58:52,163 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:58:52,164 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c38d427-fce1-4307-9f39-9f1c1a32cafd/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 10:58:52,207 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:58:52,207 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:58:52,209 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:58:52,209 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:58:52,209 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:58:52,209 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:58:52,210 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 10:58:52,210 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:58:52,210 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:58:52,210 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 10:58:52,211 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 10:58:52,212 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:58:52,212 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 10:58:52,212 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 10:58:52,212 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 10:58:52,213 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:58:52,213 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:58:52,214 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 10:58:52,214 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:58:52,214 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:58:52,214 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 10:58:52,214 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:58:52,215 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 10:58:52,215 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:58:52,215 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:58:52,215 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 10:58:52,215 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:58:52,216 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 10:58:52,216 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:58:52,217 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:58:52,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:58:52,218 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:58:52,218 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:58:52,218 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 10:58:52,219 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 10:58:52,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 10:58:52,219 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 10:58:52,219 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:58:52,219 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:58:52,220 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_9c38d427-fce1-4307-9f39-9f1c1a32cafd/bin/utaipan-9zjyvhn0QE/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c38d427-fce1-4307-9f39-9f1c1a32cafd/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f42e8f5213d7b87505465b65029831bd75698bf771428502e6718d43723a660f [2021-10-24 10:58:52,540 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:58:52,577 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:58:52,579 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:58:52,581 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:58:52,581 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:58:52,582 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c38d427-fce1-4307-9f39-9f1c1a32cafd/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/pthread-wmm/safe017_tso.i [2021-10-24 10:58:52,668 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c38d427-fce1-4307-9f39-9f1c1a32cafd/bin/utaipan-9zjyvhn0QE/data/06ec6db29/4217b92a13a64220b063ff258df48f10/FLAG50725ee06 [2021-10-24 10:58:53,316 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:58:53,317 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c38d427-fce1-4307-9f39-9f1c1a32cafd/sv-benchmarks/c/pthread-wmm/safe017_tso.i [2021-10-24 10:58:53,346 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c38d427-fce1-4307-9f39-9f1c1a32cafd/bin/utaipan-9zjyvhn0QE/data/06ec6db29/4217b92a13a64220b063ff258df48f10/FLAG50725ee06 [2021-10-24 10:58:53,573 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c38d427-fce1-4307-9f39-9f1c1a32cafd/bin/utaipan-9zjyvhn0QE/data/06ec6db29/4217b92a13a64220b063ff258df48f10 [2021-10-24 10:58:53,577 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:58:53,579 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:58:53,583 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:58:53,583 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:58:53,587 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:58:53,588 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:58:53" (1/1) ... [2021-10-24 10:58:53,590 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bc1587f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:58:53, skipping insertion in model container [2021-10-24 10:58:53,591 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:58:53" (1/1) ... [2021-10-24 10:58:53,598 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:58:53,669 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:58:53,850 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c38d427-fce1-4307-9f39-9f1c1a32cafd/sv-benchmarks/c/pthread-wmm/safe017_tso.i[945,958] [2021-10-24 10:58:54,013 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:58:54,021 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 10:58:54,034 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c38d427-fce1-4307-9f39-9f1c1a32cafd/sv-benchmarks/c/pthread-wmm/safe017_tso.i[945,958] [2021-10-24 10:58:54,065 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:58:54,102 INFO L208 MainTranslator]: Completed translation [2021-10-24 10:58:54,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:58:54 WrapperNode [2021-10-24 10:58:54,102 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:58:54,104 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 10:58:54,104 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 10:58:54,104 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 10:58:54,112 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:58:54" (1/1) ... [2021-10-24 10:58:54,126 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:58:54" (1/1) ... [2021-10-24 10:58:54,148 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 10:58:54,149 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 10:58:54,149 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 10:58:54,149 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 10:58:54,157 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:58:54" (1/1) ... [2021-10-24 10:58:54,158 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:58:54" (1/1) ... [2021-10-24 10:58:54,161 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:58:54" (1/1) ... [2021-10-24 10:58:54,162 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:58:54" (1/1) ... [2021-10-24 10:58:54,167 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:58:54" (1/1) ... [2021-10-24 10:58:54,170 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:58:54" (1/1) ... [2021-10-24 10:58:54,172 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:58:54" (1/1) ... [2021-10-24 10:58:54,175 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 10:58:54,176 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 10:58:54,176 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 10:58:54,176 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 10:58:54,177 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:58:54" (1/1) ... [2021-10-24 10:58:54,185 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:58:54,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c38d427-fce1-4307-9f39-9f1c1a32cafd/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:58:54,214 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c38d427-fce1-4307-9f39-9f1c1a32cafd/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 10:58:54,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c38d427-fce1-4307-9f39-9f1c1a32cafd/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 10:58:54,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-24 10:58:54,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-24 10:58:54,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 10:58:54,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-24 10:58:54,266 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-24 10:58:54,266 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-24 10:58:54,266 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-24 10:58:54,266 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-24 10:58:54,267 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-10-24 10:58:54,267 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-10-24 10:58:54,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 10:58:54,267 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-24 10:58:54,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 10:58:54,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 10:58:54,269 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-24 10:58:54,624 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 10:58:54,624 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-24 10:58:54,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:58:54 BoogieIcfgContainer [2021-10-24 10:58:54,627 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 10:58:54,628 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 10:58:54,629 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 10:58:54,646 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 10:58:54,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:58:53" (1/3) ... [2021-10-24 10:58:54,648 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20854fb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:58:54, skipping insertion in model container [2021-10-24 10:58:54,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:58:54" (2/3) ... [2021-10-24 10:58:54,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20854fb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:58:54, skipping insertion in model container [2021-10-24 10:58:54,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:58:54" (3/3) ... [2021-10-24 10:58:54,650 INFO L111 eAbstractionObserver]: Analyzing ICFG safe017_tso.i [2021-10-24 10:58:54,656 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-24 10:58:54,657 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 10:58:54,657 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-24 10:58:54,657 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-24 10:58:54,702 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:58:54,702 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:58:54,703 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:58:54,703 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:58:54,703 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:58:54,704 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:58:54,704 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:58:54,705 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:58:54,705 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:58:54,725 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:58:54,726 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:58:54,727 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:58:54,727 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:58:54,727 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:58:54,731 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:58:54,731 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:58:54,733 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:58:54,733 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:58:54,734 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:58:54,734 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:58:54,737 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:58:54,738 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:58:54,739 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:58:54,740 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:58:54,741 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:58:54,741 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:58:54,742 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:58:54,742 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:58:54,742 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:58:54,743 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:58:54,743 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:58:54,743 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:58:54,748 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:58:54,748 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:58:54,749 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:58:54,749 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:58:54,753 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:58:54,754 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:58:54,754 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:58:54,755 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:58:54,768 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:58:54,769 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:58:54,769 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:58:54,770 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:58:54,790 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:58:54,791 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:58:54,791 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:58:54,791 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:58:54,797 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-24 10:58:54,856 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 10:58:54,864 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-24 10:58:54,865 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-24 10:58:54,894 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-24 10:58:54,907 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 89 places, 81 transitions, 177 flow [2021-10-24 10:58:54,910 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 89 places, 81 transitions, 177 flow [2021-10-24 10:58:54,912 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 89 places, 81 transitions, 177 flow [2021-10-24 10:58:54,989 INFO L129 PetriNetUnfolder]: 2/78 cut-off events. [2021-10-24 10:58:54,989 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-24 10:58:54,993 INFO L84 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 78 events. 2/78 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 62. Up to 2 conditions per place. [2021-10-24 10:58:54,998 INFO L116 LiptonReduction]: Number of co-enabled transitions 1348 [2021-10-24 10:58:57,942 INFO L131 LiptonReduction]: Checked pairs total: 2647 [2021-10-24 10:58:57,942 INFO L133 LiptonReduction]: Total number of compositions: 70 [2021-10-24 10:58:57,951 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2021-10-24 10:58:57,994 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 226 states, 225 states have (on average 3.031111111111111) internal successors, (682), 225 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:58:57,998 INFO L276 IsEmpty]: Start isEmpty. Operand has 226 states, 225 states have (on average 3.031111111111111) internal successors, (682), 225 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:58:58,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-24 10:58:58,006 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:58:58,007 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:58:58,008 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-24 10:58:58,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:58:58,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1551058170, now seen corresponding path program 1 times [2021-10-24 10:58:58,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:58:58,023 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682484099] [2021-10-24 10:58:58,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:58:58,025 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:58:58,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:58:58,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:58:58,264 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:58:58,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682484099] [2021-10-24 10:58:58,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682484099] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:58:58,268 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:58:58,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 10:58:58,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177073928] [2021-10-24 10:58:58,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-24 10:58:58,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:58:58,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-24 10:58:58,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 10:58:58,297 INFO L87 Difference]: Start difference. First operand has 226 states, 225 states have (on average 3.031111111111111) internal successors, (682), 225 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:58:58,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:58:58,324 INFO L93 Difference]: Finished difference Result 226 states and 634 transitions. [2021-10-24 10:58:58,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-24 10:58:58,326 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2021-10-24 10:58:58,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:58:58,340 INFO L225 Difference]: With dead ends: 226 [2021-10-24 10:58:58,340 INFO L226 Difference]: Without dead ends: 226 [2021-10-24 10:58:58,341 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 10:58:58,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-10-24 10:58:58,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2021-10-24 10:58:58,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 225 states have (on average 2.8177777777777777) internal successors, (634), 225 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:58:58,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 634 transitions. [2021-10-24 10:58:58,403 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 634 transitions. Word has length 8 [2021-10-24 10:58:58,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:58:58,404 INFO L470 AbstractCegarLoop]: Abstraction has 226 states and 634 transitions. [2021-10-24 10:58:58,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:58:58,404 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 634 transitions. [2021-10-24 10:58:58,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-24 10:58:58,406 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:58:58,406 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:58:58,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-24 10:58:58,407 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-24 10:58:58,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:58:58,408 INFO L82 PathProgramCache]: Analyzing trace with hash -838166973, now seen corresponding path program 1 times [2021-10-24 10:58:58,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:58:58,408 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877486144] [2021-10-24 10:58:58,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:58:58,409 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:58:58,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:58:58,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:58:58,601 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:58:58,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877486144] [2021-10-24 10:58:58,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877486144] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:58:58,602 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:58:58,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 10:58:58,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100462367] [2021-10-24 10:58:58,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 10:58:58,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:58:58,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 10:58:58,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:58:58,615 INFO L87 Difference]: Start difference. First operand 226 states and 634 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:58:58,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:58:58,679 INFO L93 Difference]: Finished difference Result 420 states and 1101 transitions. [2021-10-24 10:58:58,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 10:58:58,680 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2021-10-24 10:58:58,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:58:58,685 INFO L225 Difference]: With dead ends: 420 [2021-10-24 10:58:58,685 INFO L226 Difference]: Without dead ends: 312 [2021-10-24 10:58:58,686 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:58:58,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2021-10-24 10:58:58,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 256. [2021-10-24 10:58:58,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 255 states have (on average 2.6431372549019607) internal successors, (674), 255 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:58:58,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 674 transitions. [2021-10-24 10:58:58,713 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 674 transitions. Word has length 9 [2021-10-24 10:58:58,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:58:58,714 INFO L470 AbstractCegarLoop]: Abstraction has 256 states and 674 transitions. [2021-10-24 10:58:58,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:58:58,714 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 674 transitions. [2021-10-24 10:58:58,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-24 10:58:58,716 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:58:58,716 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:58:58,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-24 10:58:58,717 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-24 10:58:58,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:58:58,718 INFO L82 PathProgramCache]: Analyzing trace with hash 39896379, now seen corresponding path program 1 times [2021-10-24 10:58:58,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:58:58,718 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206471012] [2021-10-24 10:58:58,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:58:58,719 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:58:58,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:58:58,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:58:58,825 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:58:58,826 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206471012] [2021-10-24 10:58:58,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206471012] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:58:58,826 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:58:58,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 10:58:58,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676606435] [2021-10-24 10:58:58,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 10:58:58,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:58:58,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 10:58:58,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:58:58,828 INFO L87 Difference]: Start difference. First operand 256 states and 674 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:58:58,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:58:58,888 INFO L93 Difference]: Finished difference Result 344 states and 853 transitions. [2021-10-24 10:58:58,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-24 10:58:58,890 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2021-10-24 10:58:58,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:58:58,895 INFO L225 Difference]: With dead ends: 344 [2021-10-24 10:58:58,895 INFO L226 Difference]: Without dead ends: 282 [2021-10-24 10:58:58,895 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 32.4ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-24 10:58:58,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-10-24 10:58:58,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 218. [2021-10-24 10:58:58,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 2.608294930875576) internal successors, (566), 217 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:58:58,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 566 transitions. [2021-10-24 10:58:58,924 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 566 transitions. Word has length 10 [2021-10-24 10:58:58,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:58:58,924 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 566 transitions. [2021-10-24 10:58:58,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:58:58,925 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 566 transitions. [2021-10-24 10:58:58,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-24 10:58:58,927 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:58:58,927 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:58:58,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-24 10:58:58,927 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-24 10:58:58,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:58:58,928 INFO L82 PathProgramCache]: Analyzing trace with hash -213396527, now seen corresponding path program 1 times [2021-10-24 10:58:58,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:58:58,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115766445] [2021-10-24 10:58:58,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:58:58,929 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:58:58,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:58:59,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:58:59,037 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:58:59,037 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115766445] [2021-10-24 10:58:59,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115766445] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:58:59,038 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:58:59,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 10:58:59,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738021499] [2021-10-24 10:58:59,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 10:58:59,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:58:59,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 10:58:59,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:58:59,040 INFO L87 Difference]: Start difference. First operand 218 states and 566 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:58:59,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:58:59,083 INFO L93 Difference]: Finished difference Result 322 states and 783 transitions. [2021-10-24 10:58:59,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-24 10:58:59,083 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2021-10-24 10:58:59,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:58:59,086 INFO L225 Difference]: With dead ends: 322 [2021-10-24 10:58:59,086 INFO L226 Difference]: Without dead ends: 264 [2021-10-24 10:58:59,087 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 29.1ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-24 10:58:59,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-10-24 10:58:59,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 208. [2021-10-24 10:58:59,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 207 states have (on average 2.570048309178744) internal successors, (532), 207 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:58:59,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 532 transitions. [2021-10-24 10:58:59,100 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 532 transitions. Word has length 10 [2021-10-24 10:58:59,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:58:59,100 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 532 transitions. [2021-10-24 10:58:59,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:58:59,101 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 532 transitions. [2021-10-24 10:58:59,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-24 10:58:59,102 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:58:59,103 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:58:59,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-24 10:58:59,103 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-24 10:58:59,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:58:59,104 INFO L82 PathProgramCache]: Analyzing trace with hash 1236763609, now seen corresponding path program 1 times [2021-10-24 10:58:59,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:58:59,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201468553] [2021-10-24 10:58:59,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:58:59,104 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:58:59,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:58:59,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:58:59,224 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:58:59,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201468553] [2021-10-24 10:58:59,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201468553] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:58:59,225 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:58:59,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 10:58:59,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078463829] [2021-10-24 10:58:59,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 10:58:59,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:58:59,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 10:58:59,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:58:59,227 INFO L87 Difference]: Start difference. First operand 208 states and 532 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:58:59,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:58:59,272 INFO L93 Difference]: Finished difference Result 293 states and 703 transitions. [2021-10-24 10:58:59,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-24 10:58:59,273 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2021-10-24 10:58:59,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:58:59,275 INFO L225 Difference]: With dead ends: 293 [2021-10-24 10:58:59,275 INFO L226 Difference]: Without dead ends: 250 [2021-10-24 10:58:59,276 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 26.7ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-24 10:58:59,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-10-24 10:58:59,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 198. [2021-10-24 10:58:59,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 2.527918781725888) internal successors, (498), 197 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:58:59,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 498 transitions. [2021-10-24 10:58:59,302 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 498 transitions. Word has length 11 [2021-10-24 10:58:59,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:58:59,303 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 498 transitions. [2021-10-24 10:58:59,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:58:59,303 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 498 transitions. [2021-10-24 10:58:59,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-24 10:58:59,305 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:58:59,305 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:58:59,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-24 10:58:59,305 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-24 10:58:59,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:58:59,306 INFO L82 PathProgramCache]: Analyzing trace with hash -194444127, now seen corresponding path program 1 times [2021-10-24 10:58:59,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:58:59,306 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949352938] [2021-10-24 10:58:59,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:58:59,307 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:58:59,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:58:59,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:58:59,426 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:58:59,426 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949352938] [2021-10-24 10:58:59,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949352938] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:58:59,427 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:58:59,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-24 10:58:59,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589502573] [2021-10-24 10:58:59,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 10:58:59,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:58:59,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 10:58:59,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:58:59,429 INFO L87 Difference]: Start difference. First operand 198 states and 498 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:58:59,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:58:59,479 INFO L93 Difference]: Finished difference Result 300 states and 699 transitions. [2021-10-24 10:58:59,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-24 10:58:59,480 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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 12 [2021-10-24 10:58:59,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:58:59,482 INFO L225 Difference]: With dead ends: 300 [2021-10-24 10:58:59,482 INFO L226 Difference]: Without dead ends: 238 [2021-10-24 10:58:59,483 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 28.2ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-24 10:58:59,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2021-10-24 10:58:59,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 182. [2021-10-24 10:58:59,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 2.453038674033149) internal successors, (444), 181 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:58:59,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 444 transitions. [2021-10-24 10:58:59,491 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 444 transitions. Word has length 12 [2021-10-24 10:58:59,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:58:59,492 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 444 transitions. [2021-10-24 10:58:59,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:58:59,492 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 444 transitions. [2021-10-24 10:58:59,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-24 10:58:59,493 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:58:59,493 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:58:59,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-24 10:58:59,494 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-24 10:58:59,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:58:59,494 INFO L82 PathProgramCache]: Analyzing trace with hash 57061456, now seen corresponding path program 1 times [2021-10-24 10:58:59,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:58:59,494 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685780086] [2021-10-24 10:58:59,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:58:59,495 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:58:59,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:58:59,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:58:59,551 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:58:59,551 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685780086] [2021-10-24 10:58:59,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685780086] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:58:59,551 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:58:59,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 10:58:59,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943995963] [2021-10-24 10:58:59,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 10:58:59,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:58:59,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 10:58:59,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:58:59,553 INFO L87 Difference]: Start difference. First operand 182 states and 444 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:58:59,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:58:59,578 INFO L93 Difference]: Finished difference Result 205 states and 450 transitions. [2021-10-24 10:58:59,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 10:58:59,578 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 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 12 [2021-10-24 10:58:59,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:58:59,580 INFO L225 Difference]: With dead ends: 205 [2021-10-24 10:58:59,580 INFO L226 Difference]: Without dead ends: 153 [2021-10-24 10:58:59,580 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:58:59,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-10-24 10:58:59,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2021-10-24 10:58:59,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 2.1907894736842106) internal successors, (333), 152 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:58:59,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 333 transitions. [2021-10-24 10:58:59,587 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 333 transitions. Word has length 12 [2021-10-24 10:58:59,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:58:59,587 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 333 transitions. [2021-10-24 10:58:59,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:58:59,588 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 333 transitions. [2021-10-24 10:58:59,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-24 10:58:59,588 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:58:59,588 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:58:59,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-24 10:58:59,589 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-24 10:58:59,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:58:59,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1295092389, now seen corresponding path program 1 times [2021-10-24 10:58:59,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:58:59,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202730497] [2021-10-24 10:58:59,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:58:59,590 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:58:59,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:58:59,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:58:59,664 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:58:59,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202730497] [2021-10-24 10:58:59,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202730497] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:58:59,665 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:58:59,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-24 10:58:59,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313622456] [2021-10-24 10:58:59,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 10:58:59,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:58:59,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 10:58:59,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:58:59,667 INFO L87 Difference]: Start difference. First operand 153 states and 333 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:58:59,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:58:59,703 INFO L93 Difference]: Finished difference Result 143 states and 280 transitions. [2021-10-24 10:58:59,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-24 10:58:59,708 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2021-10-24 10:58:59,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:58:59,709 INFO L225 Difference]: With dead ends: 143 [2021-10-24 10:58:59,709 INFO L226 Difference]: Without dead ends: 102 [2021-10-24 10:58:59,710 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 14.2ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-24 10:58:59,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-10-24 10:58:59,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2021-10-24 10:58:59,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.8712871287128714) internal successors, (189), 101 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:58:59,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 189 transitions. [2021-10-24 10:58:59,714 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 189 transitions. Word has length 13 [2021-10-24 10:58:59,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:58:59,715 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 189 transitions. [2021-10-24 10:58:59,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:58:59,715 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 189 transitions. [2021-10-24 10:58:59,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-24 10:58:59,716 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:58:59,716 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:58:59,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-24 10:58:59,717 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-24 10:58:59,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:58:59,717 INFO L82 PathProgramCache]: Analyzing trace with hash -984907728, now seen corresponding path program 1 times [2021-10-24 10:58:59,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:58:59,722 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843321426] [2021-10-24 10:58:59,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:58:59,722 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:58:59,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:58:59,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:58:59,837 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:58:59,837 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843321426] [2021-10-24 10:58:59,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843321426] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:58:59,837 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:58:59,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-24 10:58:59,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35335018] [2021-10-24 10:58:59,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-24 10:58:59,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:58:59,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-24 10:58:59,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-24 10:58:59,841 INFO L87 Difference]: Start difference. First operand 102 states and 189 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:58:59,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:58:59,876 INFO L93 Difference]: Finished difference Result 149 states and 262 transitions. [2021-10-24 10:58:59,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-24 10:58:59,877 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 14 [2021-10-24 10:58:59,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:58:59,878 INFO L225 Difference]: With dead ends: 149 [2021-10-24 10:58:59,878 INFO L226 Difference]: Without dead ends: 95 [2021-10-24 10:58:59,879 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 33.7ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-24 10:58:59,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-10-24 10:58:59,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 89. [2021-10-24 10:58:59,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.7954545454545454) internal successors, (158), 88 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:58:59,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 158 transitions. [2021-10-24 10:58:59,883 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 158 transitions. Word has length 14 [2021-10-24 10:58:59,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:58:59,884 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 158 transitions. [2021-10-24 10:58:59,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:58:59,884 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 158 transitions. [2021-10-24 10:58:59,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-24 10:58:59,885 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:58:59,885 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:58:59,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-24 10:58:59,885 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-24 10:58:59,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:58:59,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1682447188, now seen corresponding path program 1 times [2021-10-24 10:58:59,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:58:59,886 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771153726] [2021-10-24 10:58:59,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:58:59,887 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:58:59,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:58:59,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:58:59,995 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:58:59,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771153726] [2021-10-24 10:58:59,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771153726] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:58:59,998 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:58:59,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-24 10:58:59,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444709489] [2021-10-24 10:58:59,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-24 10:58:59,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:59:00,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-24 10:59:00,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-24 10:59:00,000 INFO L87 Difference]: Start difference. First operand 89 states and 158 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:59:00,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:59:00,038 INFO L93 Difference]: Finished difference Result 80 states and 138 transitions. [2021-10-24 10:59:00,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-24 10:59:00,039 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 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 15 [2021-10-24 10:59:00,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:59:00,040 INFO L225 Difference]: With dead ends: 80 [2021-10-24 10:59:00,040 INFO L226 Difference]: Without dead ends: 39 [2021-10-24 10:59:00,040 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 20.9ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-24 10:59:00,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-24 10:59:00,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-10-24 10:59:00,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.605263157894737) internal successors, (61), 38 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:59:00,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 61 transitions. [2021-10-24 10:59:00,043 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 61 transitions. Word has length 15 [2021-10-24 10:59:00,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:59:00,043 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 61 transitions. [2021-10-24 10:59:00,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:59:00,045 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 61 transitions. [2021-10-24 10:59:00,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-24 10:59:00,046 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:59:00,046 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:59:00,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-24 10:59:00,046 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-24 10:59:00,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:59:00,047 INFO L82 PathProgramCache]: Analyzing trace with hash 914094065, now seen corresponding path program 1 times [2021-10-24 10:59:00,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:59:00,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287677414] [2021-10-24 10:59:00,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:59:00,048 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:59:00,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:59:00,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:59:00,144 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:59:00,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287677414] [2021-10-24 10:59:00,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287677414] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:59:00,144 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:59:00,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-24 10:59:00,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229726034] [2021-10-24 10:59:00,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 10:59:00,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:59:00,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 10:59:00,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:59:00,146 INFO L87 Difference]: Start difference. First operand 39 states and 61 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:59:00,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:59:00,168 INFO L93 Difference]: Finished difference Result 38 states and 60 transitions. [2021-10-24 10:59:00,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 10:59:00,169 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 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 17 [2021-10-24 10:59:00,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:59:00,169 INFO L225 Difference]: With dead ends: 38 [2021-10-24 10:59:00,169 INFO L226 Difference]: Without dead ends: 0 [2021-10-24 10:59:00,170 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 18.7ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-24 10:59:00,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-24 10:59:00,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-24 10:59:00,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:59:00,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-24 10:59:00,171 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-10-24 10:59:00,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:59:00,172 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-24 10:59:00,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:59:00,173 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-24 10:59:00,174 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-24 10:59:00,177 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:59:00,178 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-24 10:59:00,181 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-24 10:59:00,181 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-24 10:59:00,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-24 10:59:00,185 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-24 10:59:00,186 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:59:00,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:59:00 BasicIcfg [2021-10-24 10:59:00,189 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:59:00,190 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:59:00,190 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:59:00,190 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:59:00,190 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:58:54" (3/4) ... [2021-10-24 10:59:00,193 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-24 10:59:00,199 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-10-24 10:59:00,200 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-10-24 10:59:00,200 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-10-24 10:59:00,207 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-24 10:59:00,207 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-24 10:59:00,207 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-24 10:59:00,208 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-24 10:59:00,240 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c38d427-fce1-4307-9f39-9f1c1a32cafd/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 10:59:00,241 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:59:00,242 INFO L168 Benchmark]: Toolchain (without parser) took 6662.84 ms. Allocated memory was 94.4 MB in the beginning and 144.7 MB in the end (delta: 50.3 MB). Free memory was 57.7 MB in the beginning and 97.8 MB in the end (delta: -40.1 MB). Peak memory consumption was 9.7 MB. Max. memory is 16.1 GB. [2021-10-24 10:59:00,243 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 94.4 MB. Free memory was 63.2 MB in the beginning and 63.2 MB in the end (delta: 25.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:59:00,243 INFO L168 Benchmark]: CACSL2BoogieTranslator took 519.68 ms. Allocated memory is still 94.4 MB. Free memory was 57.6 MB in the beginning and 58.3 MB in the end (delta: -693.9 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-24 10:59:00,244 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.59 ms. Allocated memory is still 94.4 MB. Free memory was 58.3 MB in the beginning and 56.5 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:59:00,244 INFO L168 Benchmark]: Boogie Preprocessor took 26.29 ms. Allocated memory is still 94.4 MB. Free memory was 56.5 MB in the beginning and 54.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:59:00,245 INFO L168 Benchmark]: RCFGBuilder took 451.34 ms. Allocated memory is still 94.4 MB. Free memory was 54.9 MB in the beginning and 43.3 MB in the end (delta: 11.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-24 10:59:00,245 INFO L168 Benchmark]: TraceAbstraction took 5560.42 ms. Allocated memory was 94.4 MB in the beginning and 144.7 MB in the end (delta: 50.3 MB). Free memory was 42.6 MB in the beginning and 100.9 MB in the end (delta: -58.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:59:00,246 INFO L168 Benchmark]: Witness Printer took 51.40 ms. Allocated memory is still 144.7 MB. Free memory was 100.9 MB in the beginning and 97.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-24 10:59:00,248 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 94.4 MB. Free memory was 63.2 MB in the beginning and 63.2 MB in the end (delta: 25.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 519.68 ms. Allocated memory is still 94.4 MB. Free memory was 57.6 MB in the beginning and 58.3 MB in the end (delta: -693.9 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.59 ms. Allocated memory is still 94.4 MB. Free memory was 58.3 MB in the beginning and 56.5 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.29 ms. Allocated memory is still 94.4 MB. Free memory was 56.5 MB in the beginning and 54.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 451.34 ms. Allocated memory is still 94.4 MB. Free memory was 54.9 MB in the beginning and 43.3 MB in the end (delta: 11.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5560.42 ms. Allocated memory was 94.4 MB in the beginning and 144.7 MB in the end (delta: 50.3 MB). Free memory was 42.6 MB in the beginning and 100.9 MB in the end (delta: -58.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 51.40 ms. Allocated memory is still 144.7 MB. Free memory was 100.9 MB in the beginning and 97.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3032.3ms, 89 PlacesBefore, 31 PlacesAfterwards, 81 TransitionsBefore, 22 TransitionsAfterwards, 1348 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 1 ChoiceCompositions, 70 TotalNumberOfCompositions, 2647 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1706, positive: 1622, positive conditional: 0, positive unconditional: 1622, negative: 84, negative conditional: 0, negative unconditional: 84, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1003, positive: 973, positive conditional: 0, positive unconditional: 973, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1003, positive: 967, positive conditional: 0, positive unconditional: 967, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 36, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 105, positive: 29, positive conditional: 0, positive unconditional: 29, negative: 76, negative conditional: 0, negative unconditional: 76, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1706, positive: 649, positive conditional: 0, positive unconditional: 649, negative: 54, negative conditional: 0, negative unconditional: 54, unknown: 1003, unknown conditional: 0, unknown unconditional: 1003] , Statistics on independence cache: Total cache size (in pairs): 70, Positive cache size: 61, Positive conditional cache size: 0, Positive unconditional cache size: 61, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: 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 with 1 thread instances CFG has 7 procedures, 103 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 5330.7ms, OverallIterations: 11, TraceHistogramMax: 1, EmptinessCheckTime: 24.0ms, AutomataDifference: 538.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 3130.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 245 SDtfs, 267 SDslu, 391 SDs, 0 SdLazy, 179 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 162.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 240.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=256occurred in iteration=2, InterpolantAutomatonStates: 64, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 169.4ms AutomataMinimizationTime, 11 MinimizatonAttempts, 290 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 49.3ms SsaConstructionTime, 310.8ms SatisfiabilityAnalysisTime, 825.5ms InterpolantComputationTime, 131 NumberOfCodeBlocks, 131 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 120 ConstructedInterpolants, 0 QuantifiedInterpolants, 616 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 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 RESULT: Ultimate proved your program to be correct! [2021-10-24 10:59:00,283 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c38d427-fce1-4307-9f39-9f1c1a32cafd/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...