./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe016_pso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd7c23b9-2909-452b-bce2-ecfc5f0edadb/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd7c23b9-2909-452b-bce2-ecfc5f0edadb/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd7c23b9-2909-452b-bce2-ecfc5f0edadb/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd7c23b9-2909-452b-bce2-ecfc5f0edadb/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe016_pso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd7c23b9-2909-452b-bce2-ecfc5f0edadb/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd7c23b9-2909-452b-bce2-ecfc5f0edadb/bin/utaipan-WLngWcDbfI --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 f6963db7fce396e00371f494f6797e19a5cce06a ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:31:44,047 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:31:44,049 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:31:44,093 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:31:44,096 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:31:44,103 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:31:44,107 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:31:44,112 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:31:44,116 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:31:44,122 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:31:44,123 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:31:44,125 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:31:44,125 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:31:44,128 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:31:44,130 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:31:44,132 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:31:44,133 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:31:44,135 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:31:44,139 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:31:44,150 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:31:44,152 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:31:44,154 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:31:44,158 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:31:44,159 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:31:44,163 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:31:44,164 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:31:44,164 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:31:44,166 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:31:44,167 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:31:44,169 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:31:44,169 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:31:44,170 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:31:44,172 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:31:44,174 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:31:44,175 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:31:44,176 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:31:44,177 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:31:44,177 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:31:44,177 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:31:44,178 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:31:44,179 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:31:44,181 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd7c23b9-2909-452b-bce2-ecfc5f0edadb/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:31:44,213 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:31:44,215 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:31:44,217 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:31:44,217 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:31:44,217 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:31:44,217 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:31:44,218 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:31:44,218 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:31:44,228 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:31:44,228 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:31:44,229 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:31:44,230 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:31:44,230 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:31:44,230 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:31:44,231 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:31:44,231 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:31:44,232 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:31:44,232 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:31:44,232 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:31:44,232 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:31:44,233 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:31:44,233 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:31:44,233 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:31:44,233 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:31:44,234 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:31:44,234 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:31:44,234 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:31:44,234 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:31:44,235 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:31:44,235 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:31:44,235 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:31:44,235 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:31:44,236 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:31:44,236 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:31:44,236 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:31:44,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:31:44,237 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:31:44,237 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:31:44,237 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:31:44,237 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_bd7c23b9-2909-452b-bce2-ecfc5f0edadb/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd7c23b9-2909-452b-bce2-ecfc5f0edadb/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6963db7fce396e00371f494f6797e19a5cce06a [2021-10-11 02:31:44,533 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:31:44,561 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:31:44,564 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:31:44,565 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:31:44,567 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:31:44,568 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd7c23b9-2909-452b-bce2-ecfc5f0edadb/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/pthread-wmm/safe016_pso.opt.i [2021-10-11 02:31:44,641 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd7c23b9-2909-452b-bce2-ecfc5f0edadb/bin/utaipan-WLngWcDbfI/data/623a0be55/8aa8b328e3184a46913ca265b2b20328/FLAG28d80a46f [2021-10-11 02:31:45,334 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:31:45,335 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd7c23b9-2909-452b-bce2-ecfc5f0edadb/sv-benchmarks/c/pthread-wmm/safe016_pso.opt.i [2021-10-11 02:31:45,354 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd7c23b9-2909-452b-bce2-ecfc5f0edadb/bin/utaipan-WLngWcDbfI/data/623a0be55/8aa8b328e3184a46913ca265b2b20328/FLAG28d80a46f [2021-10-11 02:31:45,588 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd7c23b9-2909-452b-bce2-ecfc5f0edadb/bin/utaipan-WLngWcDbfI/data/623a0be55/8aa8b328e3184a46913ca265b2b20328 [2021-10-11 02:31:45,591 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:31:45,594 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:31:45,597 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:31:45,597 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:31:45,601 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:31:45,601 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:31:45" (1/1) ... [2021-10-11 02:31:45,603 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7aad776c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:45, skipping insertion in model container [2021-10-11 02:31:45,603 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:31:45" (1/1) ... [2021-10-11 02:31:45,612 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:31:45,676 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:31:45,885 WARN L226 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_bd7c23b9-2909-452b-bce2-ecfc5f0edadb/sv-benchmarks/c/pthread-wmm/safe016_pso.opt.i[949,962] [2021-10-11 02:31:46,140 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:31:46,153 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:31:46,167 WARN L226 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_bd7c23b9-2909-452b-bce2-ecfc5f0edadb/sv-benchmarks/c/pthread-wmm/safe016_pso.opt.i[949,962] [2021-10-11 02:31:46,212 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:31:46,308 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:31:46,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:46 WrapperNode [2021-10-11 02:31:46,309 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:31:46,310 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:31:46,310 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:31:46,310 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:31:46,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:46" (1/1) ... [2021-10-11 02:31:46,352 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:46" (1/1) ... [2021-10-11 02:31:46,373 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:31:46,374 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:31:46,374 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:31:46,374 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:31:46,383 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:46" (1/1) ... [2021-10-11 02:31:46,383 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:46" (1/1) ... [2021-10-11 02:31:46,386 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:46" (1/1) ... [2021-10-11 02:31:46,387 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:46" (1/1) ... [2021-10-11 02:31:46,394 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:46" (1/1) ... [2021-10-11 02:31:46,413 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:46" (1/1) ... [2021-10-11 02:31:46,415 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:46" (1/1) ... [2021-10-11 02:31:46,418 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:31:46,420 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:31:46,420 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:31:46,420 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:31:46,423 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:46" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd7c23b9-2909-452b-bce2-ecfc5f0edadb/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:31:46,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 02:31:46,560 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-11 02:31:46,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:31:46,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:31:46,561 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-11 02:31:46,561 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-11 02:31:46,563 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-11 02:31:46,563 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-11 02:31:46,563 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-10-11 02:31:46,563 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-10-11 02:31:46,564 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-10-11 02:31:46,564 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-10-11 02:31:46,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:31:46,564 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-11 02:31:46,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:31:46,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:31:46,566 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-11 02:31:47,023 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:31:47,024 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-11 02:31:47,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:31:47 BoogieIcfgContainer [2021-10-11 02:31:47,026 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:31:47,027 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:31:47,028 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:31:47,031 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:31:47,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:31:45" (1/3) ... [2021-10-11 02:31:47,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@100ef7ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:31:47, skipping insertion in model container [2021-10-11 02:31:47,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:46" (2/3) ... [2021-10-11 02:31:47,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@100ef7ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:31:47, skipping insertion in model container [2021-10-11 02:31:47,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:31:47" (3/3) ... [2021-10-11 02:31:47,034 INFO L111 eAbstractionObserver]: Analyzing ICFG safe016_pso.opt.i [2021-10-11 02:31:47,049 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-11 02:31:47,049 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:31:47,052 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:31:47,053 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-11 02:31:47,083 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:47,084 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:47,084 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:47,084 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:47,084 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:47,084 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:47,085 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:47,085 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:47,085 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:47,086 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:47,086 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:47,086 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:47,086 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:47,087 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:47,087 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:47,087 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:47,087 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:47,087 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:47,088 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:47,088 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:47,088 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:47,088 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:47,089 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:47,089 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:47,089 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:47,090 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:47,090 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:47,090 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:47,090 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:47,090 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:47,091 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:47,091 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:47,091 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:47,091 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:47,092 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:47,092 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:47,092 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:47,093 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:47,093 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:47,093 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:47,094 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:47,094 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:47,094 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:47,094 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:47,095 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:47,095 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:47,095 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:47,095 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:47,098 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:47,098 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:47,098 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:47,098 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:47,103 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:47,103 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:47,103 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:47,104 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:47,106 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:47,106 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:47,106 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:47,106 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:47,108 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:47,109 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:47,109 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:47,109 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:31:47,111 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-11 02:31:47,123 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-10-11 02:31:47,143 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:31:47,143 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:31:47,144 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:31:47,144 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:31:47,144 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:31:47,144 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:31:47,144 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:31:47,144 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:31:47,157 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-11 02:31:47,159 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 96 places, 85 transitions, 190 flow [2021-10-11 02:31:47,162 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 96 places, 85 transitions, 190 flow [2021-10-11 02:31:47,164 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 96 places, 85 transitions, 190 flow [2021-10-11 02:31:47,210 INFO L129 PetriNetUnfolder]: 2/81 cut-off events. [2021-10-11 02:31:47,210 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-11 02:31:47,214 INFO L84 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 81 events. 2/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 64 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2021-10-11 02:31:47,218 INFO L116 LiptonReduction]: Number of co-enabled transitions 1866 [2021-10-11 02:31:49,929 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2021-10-11 02:31:50,329 WARN L197 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-10-11 02:31:50,586 WARN L197 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-10-11 02:31:50,726 INFO L131 LiptonReduction]: Checked pairs total: 3411 [2021-10-11 02:31:50,726 INFO L133 LiptonReduction]: Total number of compositions: 70 [2021-10-11 02:31:50,732 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 27 transitions, 74 flow [2021-10-11 02:31:50,786 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 850 states. [2021-10-11 02:31:50,788 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states. [2021-10-11 02:31:50,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:31:50,797 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:50,798 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:31:50,798 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:50,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:50,804 INFO L82 PathProgramCache]: Analyzing trace with hash -975438877, now seen corresponding path program 1 times [2021-10-11 02:31:50,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:31:50,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957162558] [2021-10-11 02:31:50,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:31:50,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:51,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:31:51,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957162558] [2021-10-11 02:31:51,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:31:51,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:31:51,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650914983] [2021-10-11 02:31:51,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 02:31:51,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:31:51,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 02:31:51,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:31:51,112 INFO L87 Difference]: Start difference. First operand 850 states. Second operand 2 states. [2021-10-11 02:31:51,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:51,184 INFO L93 Difference]: Finished difference Result 850 states and 2994 transitions. [2021-10-11 02:31:51,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 02:31:51,185 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2021-10-11 02:31:51,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:51,212 INFO L225 Difference]: With dead ends: 850 [2021-10-11 02:31:51,212 INFO L226 Difference]: Without dead ends: 706 [2021-10-11 02:31:51,213 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:31:51,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2021-10-11 02:31:51,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2021-10-11 02:31:51,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2021-10-11 02:31:51,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 2442 transitions. [2021-10-11 02:31:51,340 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 2442 transitions. Word has length 10 [2021-10-11 02:31:51,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:51,341 INFO L481 AbstractCegarLoop]: Abstraction has 706 states and 2442 transitions. [2021-10-11 02:31:51,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 02:31:51,342 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 2442 transitions. [2021-10-11 02:31:51,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 02:31:51,347 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:51,347 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:31:51,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:31:51,348 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:51,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:51,352 INFO L82 PathProgramCache]: Analyzing trace with hash -173841252, now seen corresponding path program 1 times [2021-10-11 02:31:51,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:31:51,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301818977] [2021-10-11 02:31:51,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:31:51,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:51,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:31:51,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301818977] [2021-10-11 02:31:51,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:31:51,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:31:51,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306753625] [2021-10-11 02:31:51,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:31:51,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:31:51,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:31:51,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:31:51,502 INFO L87 Difference]: Start difference. First operand 706 states and 2442 transitions. Second operand 4 states. [2021-10-11 02:31:51,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:51,588 INFO L93 Difference]: Finished difference Result 1412 states and 4631 transitions. [2021-10-11 02:31:51,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:31:51,588 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2021-10-11 02:31:51,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:51,601 INFO L225 Difference]: With dead ends: 1412 [2021-10-11 02:31:51,601 INFO L226 Difference]: Without dead ends: 1104 [2021-10-11 02:31:51,602 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:31:51,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1104 states. [2021-10-11 02:31:51,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1104 to 904. [2021-10-11 02:31:51,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 904 states. [2021-10-11 02:31:51,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 3004 transitions. [2021-10-11 02:31:51,658 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 3004 transitions. Word has length 11 [2021-10-11 02:31:51,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:51,658 INFO L481 AbstractCegarLoop]: Abstraction has 904 states and 3004 transitions. [2021-10-11 02:31:51,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:31:51,658 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 3004 transitions. [2021-10-11 02:31:51,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 02:31:51,665 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:51,665 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:31:51,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:31:51,666 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:51,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:51,667 INFO L82 PathProgramCache]: Analyzing trace with hash -892982348, now seen corresponding path program 1 times [2021-10-11 02:31:51,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:31:51,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265191547] [2021-10-11 02:31:51,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:31:51,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:51,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:31:51,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265191547] [2021-10-11 02:31:51,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:31:51,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:31:51,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547305392] [2021-10-11 02:31:51,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:31:51,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:31:51,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:31:51,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:31:51,790 INFO L87 Difference]: Start difference. First operand 904 states and 3004 transitions. Second operand 5 states. [2021-10-11 02:31:51,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:51,914 INFO L93 Difference]: Finished difference Result 1245 states and 3917 transitions. [2021-10-11 02:31:51,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:31:51,914 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2021-10-11 02:31:51,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:51,927 INFO L225 Difference]: With dead ends: 1245 [2021-10-11 02:31:51,927 INFO L226 Difference]: Without dead ends: 1014 [2021-10-11 02:31:51,928 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:31:51,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2021-10-11 02:31:51,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 806. [2021-10-11 02:31:51,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 806 states. [2021-10-11 02:31:51,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 2638 transitions. [2021-10-11 02:31:51,970 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 2638 transitions. Word has length 12 [2021-10-11 02:31:51,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:51,971 INFO L481 AbstractCegarLoop]: Abstraction has 806 states and 2638 transitions. [2021-10-11 02:31:51,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:31:51,971 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 2638 transitions. [2021-10-11 02:31:51,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 02:31:51,973 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:51,974 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:31:51,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:31:51,978 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:51,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:51,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1094137873, now seen corresponding path program 1 times [2021-10-11 02:31:51,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:31:51,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616917203] [2021-10-11 02:31:51,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:31:52,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:52,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:31:52,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616917203] [2021-10-11 02:31:52,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:31:52,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:31:52,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244968279] [2021-10-11 02:31:52,101 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:31:52,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:31:52,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:31:52,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:31:52,102 INFO L87 Difference]: Start difference. First operand 806 states and 2638 transitions. Second operand 5 states. [2021-10-11 02:31:52,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:52,188 INFO L93 Difference]: Finished difference Result 1094 states and 3416 transitions. [2021-10-11 02:31:52,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:31:52,189 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2021-10-11 02:31:52,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:52,201 INFO L225 Difference]: With dead ends: 1094 [2021-10-11 02:31:52,201 INFO L226 Difference]: Without dead ends: 934 [2021-10-11 02:31:52,201 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:31:52,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2021-10-11 02:31:52,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 710. [2021-10-11 02:31:52,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 710 states. [2021-10-11 02:31:52,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 2290 transitions. [2021-10-11 02:31:52,258 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 2290 transitions. Word has length 12 [2021-10-11 02:31:52,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:52,258 INFO L481 AbstractCegarLoop]: Abstraction has 710 states and 2290 transitions. [2021-10-11 02:31:52,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:31:52,258 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 2290 transitions. [2021-10-11 02:31:52,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-11 02:31:52,260 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:52,260 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:31:52,260 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:31:52,260 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:52,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:52,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1912675369, now seen corresponding path program 1 times [2021-10-11 02:31:52,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:31:52,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244366669] [2021-10-11 02:31:52,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:31:52,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:52,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:31:52,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244366669] [2021-10-11 02:31:52,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:31:52,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:31:52,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803987862] [2021-10-11 02:31:52,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:31:52,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:31:52,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:31:52,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:31:52,328 INFO L87 Difference]: Start difference. First operand 710 states and 2290 transitions. Second operand 5 states. [2021-10-11 02:31:52,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:52,412 INFO L93 Difference]: Finished difference Result 1024 states and 3137 transitions. [2021-10-11 02:31:52,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:31:52,413 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2021-10-11 02:31:52,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:52,421 INFO L225 Difference]: With dead ends: 1024 [2021-10-11 02:31:52,421 INFO L226 Difference]: Without dead ends: 874 [2021-10-11 02:31:52,421 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:31:52,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2021-10-11 02:31:52,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 666. [2021-10-11 02:31:52,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 666 states. [2021-10-11 02:31:52,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 2118 transitions. [2021-10-11 02:31:52,451 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 2118 transitions. Word has length 13 [2021-10-11 02:31:52,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:52,452 INFO L481 AbstractCegarLoop]: Abstraction has 666 states and 2118 transitions. [2021-10-11 02:31:52,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:31:52,452 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 2118 transitions. [2021-10-11 02:31:52,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-11 02:31:52,454 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:52,454 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:31:52,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:31:52,455 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:52,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:52,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1163214657, now seen corresponding path program 1 times [2021-10-11 02:31:52,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:31:52,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758648391] [2021-10-11 02:31:52,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:31:52,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:52,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:31:52,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758648391] [2021-10-11 02:31:52,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:31:52,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:31:52,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428769645] [2021-10-11 02:31:52,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:31:52,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:31:52,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:31:52,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:31:52,552 INFO L87 Difference]: Start difference. First operand 666 states and 2118 transitions. Second operand 5 states. [2021-10-11 02:31:52,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:52,625 INFO L93 Difference]: Finished difference Result 898 states and 2766 transitions. [2021-10-11 02:31:52,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:31:52,626 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2021-10-11 02:31:52,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:52,633 INFO L225 Difference]: With dead ends: 898 [2021-10-11 02:31:52,633 INFO L226 Difference]: Without dead ends: 810 [2021-10-11 02:31:52,633 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:31:52,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2021-10-11 02:31:52,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 610. [2021-10-11 02:31:52,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 610 states. [2021-10-11 02:31:52,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 1922 transitions. [2021-10-11 02:31:52,664 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 1922 transitions. Word has length 14 [2021-10-11 02:31:52,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:52,665 INFO L481 AbstractCegarLoop]: Abstraction has 610 states and 1922 transitions. [2021-10-11 02:31:52,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:31:52,665 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 1922 transitions. [2021-10-11 02:31:52,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-11 02:31:52,667 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:52,667 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:31:52,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:31:52,668 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:52,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:52,668 INFO L82 PathProgramCache]: Analyzing trace with hash -1700448803, now seen corresponding path program 1 times [2021-10-11 02:31:52,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:31:52,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673063959] [2021-10-11 02:31:52,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:31:52,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:52,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:31:52,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673063959] [2021-10-11 02:31:52,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:31:52,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:31:52,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782922604] [2021-10-11 02:31:52,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:31:52,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:31:52,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:31:52,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:31:52,753 INFO L87 Difference]: Start difference. First operand 610 states and 1922 transitions. Second operand 6 states. [2021-10-11 02:31:52,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:52,828 INFO L93 Difference]: Finished difference Result 1062 states and 3260 transitions. [2021-10-11 02:31:52,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:31:52,829 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2021-10-11 02:31:52,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:52,834 INFO L225 Difference]: With dead ends: 1062 [2021-10-11 02:31:52,835 INFO L226 Difference]: Without dead ends: 618 [2021-10-11 02:31:52,836 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:31:52,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2021-10-11 02:31:52,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 498. [2021-10-11 02:31:52,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 498 states. [2021-10-11 02:31:52,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 1528 transitions. [2021-10-11 02:31:52,863 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 1528 transitions. Word has length 15 [2021-10-11 02:31:52,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:52,863 INFO L481 AbstractCegarLoop]: Abstraction has 498 states and 1528 transitions. [2021-10-11 02:31:52,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:31:52,863 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 1528 transitions. [2021-10-11 02:31:52,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-11 02:31:52,864 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:52,865 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:31:52,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:31:52,865 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:52,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:52,866 INFO L82 PathProgramCache]: Analyzing trace with hash -672340700, now seen corresponding path program 1 times [2021-10-11 02:31:52,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:31:52,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074177392] [2021-10-11 02:31:52,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:31:52,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:52,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:31:52,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074177392] [2021-10-11 02:31:52,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:31:52,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:31:52,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351191567] [2021-10-11 02:31:52,973 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:31:52,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:31:52,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:31:52,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:31:52,974 INFO L87 Difference]: Start difference. First operand 498 states and 1528 transitions. Second operand 5 states. [2021-10-11 02:31:53,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:53,042 INFO L93 Difference]: Finished difference Result 774 states and 2260 transitions. [2021-10-11 02:31:53,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:31:53,042 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2021-10-11 02:31:53,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:53,052 INFO L225 Difference]: With dead ends: 774 [2021-10-11 02:31:53,053 INFO L226 Difference]: Without dead ends: 602 [2021-10-11 02:31:53,054 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:31:53,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2021-10-11 02:31:53,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 442. [2021-10-11 02:31:53,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2021-10-11 02:31:53,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 1320 transitions. [2021-10-11 02:31:53,079 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 1320 transitions. Word has length 15 [2021-10-11 02:31:53,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:53,079 INFO L481 AbstractCegarLoop]: Abstraction has 442 states and 1320 transitions. [2021-10-11 02:31:53,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:31:53,080 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 1320 transitions. [2021-10-11 02:31:53,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-11 02:31:53,081 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:53,081 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:31:53,081 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 02:31:53,082 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:53,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:53,082 INFO L82 PathProgramCache]: Analyzing trace with hash -671268224, now seen corresponding path program 1 times [2021-10-11 02:31:53,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:31:53,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406406659] [2021-10-11 02:31:53,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:31:53,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:53,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:31:53,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406406659] [2021-10-11 02:31:53,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:31:53,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:31:53,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713992352] [2021-10-11 02:31:53,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:31:53,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:31:53,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:31:53,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:31:53,158 INFO L87 Difference]: Start difference. First operand 442 states and 1320 transitions. Second operand 3 states. [2021-10-11 02:31:53,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:53,178 INFO L93 Difference]: Finished difference Result 400 states and 1123 transitions. [2021-10-11 02:31:53,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:31:53,179 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2021-10-11 02:31:53,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:53,182 INFO L225 Difference]: With dead ends: 400 [2021-10-11 02:31:53,182 INFO L226 Difference]: Without dead ends: 400 [2021-10-11 02:31:53,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:31:53,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2021-10-11 02:31:53,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 400. [2021-10-11 02:31:53,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 400 states. [2021-10-11 02:31:53,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 1123 transitions. [2021-10-11 02:31:53,197 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 1123 transitions. Word has length 15 [2021-10-11 02:31:53,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:53,198 INFO L481 AbstractCegarLoop]: Abstraction has 400 states and 1123 transitions. [2021-10-11 02:31:53,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:31:53,198 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 1123 transitions. [2021-10-11 02:31:53,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-11 02:31:53,199 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:53,199 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:31:53,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-11 02:31:53,200 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:53,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:53,200 INFO L82 PathProgramCache]: Analyzing trace with hash 1195890947, now seen corresponding path program 1 times [2021-10-11 02:31:53,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:31:53,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908129325] [2021-10-11 02:31:53,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:31:53,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:53,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:31:53,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908129325] [2021-10-11 02:31:53,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:31:53,264 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:31:53,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395102106] [2021-10-11 02:31:53,265 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:31:53,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:31:53,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:31:53,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:31:53,266 INFO L87 Difference]: Start difference. First operand 400 states and 1123 transitions. Second operand 4 states. [2021-10-11 02:31:53,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:53,290 INFO L93 Difference]: Finished difference Result 309 states and 779 transitions. [2021-10-11 02:31:53,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:31:53,290 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2021-10-11 02:31:53,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:53,293 INFO L225 Difference]: With dead ends: 309 [2021-10-11 02:31:53,293 INFO L226 Difference]: Without dead ends: 309 [2021-10-11 02:31:53,293 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:31:53,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2021-10-11 02:31:53,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 309. [2021-10-11 02:31:53,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2021-10-11 02:31:53,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 779 transitions. [2021-10-11 02:31:53,303 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 779 transitions. Word has length 16 [2021-10-11 02:31:53,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:53,304 INFO L481 AbstractCegarLoop]: Abstraction has 309 states and 779 transitions. [2021-10-11 02:31:53,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:31:53,304 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 779 transitions. [2021-10-11 02:31:53,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-11 02:31:53,305 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:53,305 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:31:53,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-11 02:31:53,306 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:53,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:53,307 INFO L82 PathProgramCache]: Analyzing trace with hash 852842, now seen corresponding path program 1 times [2021-10-11 02:31:53,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:31:53,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734042049] [2021-10-11 02:31:53,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:31:53,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:53,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:31:53,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734042049] [2021-10-11 02:31:53,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:31:53,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:31:53,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106484721] [2021-10-11 02:31:53,372 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:31:53,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:31:53,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:31:53,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:31:53,379 INFO L87 Difference]: Start difference. First operand 309 states and 779 transitions. Second operand 5 states. [2021-10-11 02:31:53,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:53,412 INFO L93 Difference]: Finished difference Result 236 states and 571 transitions. [2021-10-11 02:31:53,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:31:53,413 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2021-10-11 02:31:53,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:53,415 INFO L225 Difference]: With dead ends: 236 [2021-10-11 02:31:53,415 INFO L226 Difference]: Without dead ends: 228 [2021-10-11 02:31:53,415 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:31:53,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-10-11 02:31:53,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 224. [2021-10-11 02:31:53,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2021-10-11 02:31:53,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 537 transitions. [2021-10-11 02:31:53,423 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 537 transitions. Word has length 17 [2021-10-11 02:31:53,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:53,423 INFO L481 AbstractCegarLoop]: Abstraction has 224 states and 537 transitions. [2021-10-11 02:31:53,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:31:53,424 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 537 transitions. [2021-10-11 02:31:53,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-11 02:31:53,424 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:53,425 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:31:53,425 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-11 02:31:53,425 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:53,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:53,425 INFO L82 PathProgramCache]: Analyzing trace with hash 2041241983, now seen corresponding path program 1 times [2021-10-11 02:31:53,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:31:53,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360888127] [2021-10-11 02:31:53,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:31:53,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:53,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:31:53,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360888127] [2021-10-11 02:31:53,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:31:53,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:31:53,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944622065] [2021-10-11 02:31:53,475 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:31:53,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:31:53,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:31:53,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:31:53,476 INFO L87 Difference]: Start difference. First operand 224 states and 537 transitions. Second operand 5 states. [2021-10-11 02:31:53,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:53,522 INFO L93 Difference]: Finished difference Result 276 states and 638 transitions. [2021-10-11 02:31:53,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:31:53,522 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2021-10-11 02:31:53,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:53,524 INFO L225 Difference]: With dead ends: 276 [2021-10-11 02:31:53,524 INFO L226 Difference]: Without dead ends: 162 [2021-10-11 02:31:53,524 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:31:53,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-10-11 02:31:53,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 158. [2021-10-11 02:31:53,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2021-10-11 02:31:53,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 338 transitions. [2021-10-11 02:31:53,530 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 338 transitions. Word has length 19 [2021-10-11 02:31:53,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:53,530 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 338 transitions. [2021-10-11 02:31:53,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:31:53,530 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 338 transitions. [2021-10-11 02:31:53,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-11 02:31:53,531 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:53,531 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:31:53,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-11 02:31:53,531 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:53,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:53,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1152877885, now seen corresponding path program 2 times [2021-10-11 02:31:53,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:31:53,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746682307] [2021-10-11 02:31:53,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:31:53,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:53,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:31:53,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746682307] [2021-10-11 02:31:53,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:31:53,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:31:53,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534051344] [2021-10-11 02:31:53,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:31:53,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:31:53,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:31:53,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:31:53,591 INFO L87 Difference]: Start difference. First operand 158 states and 338 transitions. Second operand 6 states. [2021-10-11 02:31:53,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:53,633 INFO L93 Difference]: Finished difference Result 137 states and 298 transitions. [2021-10-11 02:31:53,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:31:53,633 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2021-10-11 02:31:53,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:53,634 INFO L225 Difference]: With dead ends: 137 [2021-10-11 02:31:53,634 INFO L226 Difference]: Without dead ends: 53 [2021-10-11 02:31:53,634 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:31:53,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-10-11 02:31:53,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-10-11 02:31:53,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2021-10-11 02:31:53,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 96 transitions. [2021-10-11 02:31:53,637 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 96 transitions. Word has length 19 [2021-10-11 02:31:53,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:53,637 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 96 transitions. [2021-10-11 02:31:53,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:31:53,637 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 96 transitions. [2021-10-11 02:31:53,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-11 02:31:53,638 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:53,638 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:31:53,638 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-11 02:31:53,638 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:53,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:53,639 INFO L82 PathProgramCache]: Analyzing trace with hash 1281872009, now seen corresponding path program 1 times [2021-10-11 02:31:53,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:31:53,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724127568] [2021-10-11 02:31:53,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:31:53,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:53,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:31:53,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724127568] [2021-10-11 02:31:53,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:31:53,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:31:53,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111956822] [2021-10-11 02:31:53,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:31:53,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:31:53,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:31:53,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:31:53,711 INFO L87 Difference]: Start difference. First operand 53 states and 96 transitions. Second operand 6 states. [2021-10-11 02:31:53,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:53,736 INFO L93 Difference]: Finished difference Result 52 states and 95 transitions. [2021-10-11 02:31:53,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:31:53,736 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2021-10-11 02:31:53,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:53,736 INFO L225 Difference]: With dead ends: 52 [2021-10-11 02:31:53,736 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:31:53,737 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:31:53,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:31:53,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:31:53,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:31:53,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:31:53,737 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2021-10-11 02:31:53,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:53,737 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:31:53,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:31:53,738 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:31:53,738 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:31:53,738 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-11 02:31:53,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:31:53 BasicIcfg [2021-10-11 02:31:53,741 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:31:53,741 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:31:53,741 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:31:53,741 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:31:53,742 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:31:47" (3/4) ... [2021-10-11 02:31:53,745 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:31:53,750 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-10-11 02:31:53,750 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-10-11 02:31:53,750 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-10-11 02:31:53,751 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2021-10-11 02:31:53,755 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2021-10-11 02:31:53,755 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-11 02:31:53,755 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:31:53,756 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:31:53,789 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd7c23b9-2909-452b-bce2-ecfc5f0edadb/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:31:53,789 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:31:53,790 INFO L168 Benchmark]: Toolchain (without parser) took 8195.74 ms. Allocated memory was 98.6 MB in the beginning and 192.9 MB in the end (delta: 94.4 MB). Free memory was 66.6 MB in the beginning and 155.8 MB in the end (delta: -89.2 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:31:53,790 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 98.6 MB. Free memory is still 56.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:31:53,791 INFO L168 Benchmark]: CACSL2BoogieTranslator took 711.79 ms. Allocated memory is still 98.6 MB. Free memory was 66.4 MB in the beginning and 50.6 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:31:53,791 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.61 ms. Allocated memory is still 98.6 MB. Free memory was 50.6 MB in the beginning and 48.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:31:53,792 INFO L168 Benchmark]: Boogie Preprocessor took 44.75 ms. Allocated memory was 98.6 MB in the beginning and 132.1 MB in the end (delta: 33.6 MB). Free memory was 48.9 MB in the beginning and 109.3 MB in the end (delta: -60.4 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:31:53,792 INFO L168 Benchmark]: RCFGBuilder took 606.19 ms. Allocated memory is still 132.1 MB. Free memory was 109.2 MB in the beginning and 87.6 MB in the end (delta: 21.6 MB). Peak memory consumption was 23.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:31:53,793 INFO L168 Benchmark]: TraceAbstraction took 6713.28 ms. Allocated memory was 132.1 MB in the beginning and 192.9 MB in the end (delta: 60.8 MB). Free memory was 86.9 MB in the beginning and 158.9 MB in the end (delta: -72.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:31:53,793 INFO L168 Benchmark]: Witness Printer took 47.69 ms. Allocated memory is still 192.9 MB. Free memory was 158.9 MB in the beginning and 155.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:31:53,801 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 98.6 MB. Free memory is still 56.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 711.79 ms. Allocated memory is still 98.6 MB. Free memory was 66.4 MB in the beginning and 50.6 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 63.61 ms. Allocated memory is still 98.6 MB. Free memory was 50.6 MB in the beginning and 48.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 44.75 ms. Allocated memory was 98.6 MB in the beginning and 132.1 MB in the end (delta: 33.6 MB). Free memory was 48.9 MB in the beginning and 109.3 MB in the end (delta: -60.4 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 606.19 ms. Allocated memory is still 132.1 MB. Free memory was 109.2 MB in the beginning and 87.6 MB in the end (delta: 21.6 MB). Peak memory consumption was 23.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6713.28 ms. Allocated memory was 132.1 MB in the beginning and 192.9 MB in the end (delta: 60.8 MB). Free memory was 86.9 MB in the beginning and 158.9 MB in the end (delta: -72.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 47.69 ms. Allocated memory is still 192.9 MB. Free memory was 158.9 MB in the beginning and 155.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1211 VarBasedMoverChecksPositive, 49 VarBasedMoverChecksNegative, 10 SemBasedMoverChecksPositive, 39 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.5s, 114 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.5s, 96 PlacesBefore, 39 PlacesAfterwards, 85 TransitionsBefore, 27 TransitionsAfterwards, 1866 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 1 ChoiceCompositions, 70 TotalNumberOfCompositions, 3411 MoverChecksTotal - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 84 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.5s, OverallIterations: 14, TraceHistogramMax: 1, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.6s, HoareTripleCheckerStatistics: 370 SDtfs, 437 SDslu, 641 SDs, 0 SdLazy, 249 SolverSat, 60 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 65 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=904occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 14 MinimizatonAttempts, 1328 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 209 NumberOfCodeBlocks, 209 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 195 ConstructedInterpolants, 0 QuantifiedInterpolants, 12793 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...