./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe015_tso.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_07f565dc-9036-498e-b2c3-4c7f0901077f/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f565dc-9036-498e-b2c3-4c7f0901077f/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_07f565dc-9036-498e-b2c3-4c7f0901077f/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f565dc-9036-498e-b2c3-4c7f0901077f/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe015_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f565dc-9036-498e-b2c3-4c7f0901077f/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_07f565dc-9036-498e-b2c3-4c7f0901077f/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 acb4e4cf9618679cb89bb556ee2ad72be1e1c078 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 02:22:05,015 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:22:05,018 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:22:05,056 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:22:05,057 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:22:05,062 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:22:05,065 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:22:05,069 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:22:05,072 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:22:05,079 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:22:05,080 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:22:05,082 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:22:05,082 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:22:05,086 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:22:05,087 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:22:05,088 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:22:05,089 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:22:05,090 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:22:05,093 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:22:05,096 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:22:05,100 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:22:05,104 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:22:05,107 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:22:05,109 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:22:05,123 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:22:05,124 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:22:05,124 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:22:05,125 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:22:05,126 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:22:05,130 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:22:05,131 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:22:05,132 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:22:05,134 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:22:05,136 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:22:05,139 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:22:05,139 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:22:05,140 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:22:05,140 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:22:05,141 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:22:05,142 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:22:05,143 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:22:05,144 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f565dc-9036-498e-b2c3-4c7f0901077f/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:22:05,185 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:22:05,186 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:22:05,187 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:22:05,188 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:22:05,188 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:22:05,188 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:22:05,188 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:22:05,189 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:22:05,189 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:22:05,189 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:22:05,191 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:22:05,191 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:22:05,191 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:22:05,192 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:22:05,192 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:22:05,193 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:22:05,193 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:22:05,193 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:22:05,193 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:22:05,194 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:22:05,194 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:22:05,194 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:22:05,194 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:22:05,195 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:22:05,195 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:22:05,195 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:22:05,195 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:22:05,196 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:22:05,196 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:22:05,196 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:22:05,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:22:05,197 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:22:05,197 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:22:05,198 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:22:05,198 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:22:05,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:22:05,198 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:22:05,199 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:22:05,199 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:22:05,199 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_07f565dc-9036-498e-b2c3-4c7f0901077f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f565dc-9036-498e-b2c3-4c7f0901077f/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> acb4e4cf9618679cb89bb556ee2ad72be1e1c078 [2021-10-11 02:22:05,552 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:22:05,584 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:22:05,588 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:22:05,590 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:22:05,591 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:22:05,592 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f565dc-9036-498e-b2c3-4c7f0901077f/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/pthread-wmm/safe015_tso.opt.i [2021-10-11 02:22:05,700 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f565dc-9036-498e-b2c3-4c7f0901077f/bin/utaipan-WLngWcDbfI/data/c8c444ffb/5e15f4d2079348158f3d0acac3a4aabf/FLAGbb40764c8 [2021-10-11 02:22:06,302 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:22:06,303 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f565dc-9036-498e-b2c3-4c7f0901077f/sv-benchmarks/c/pthread-wmm/safe015_tso.opt.i [2021-10-11 02:22:06,318 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f565dc-9036-498e-b2c3-4c7f0901077f/bin/utaipan-WLngWcDbfI/data/c8c444ffb/5e15f4d2079348158f3d0acac3a4aabf/FLAGbb40764c8 [2021-10-11 02:22:06,555 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f565dc-9036-498e-b2c3-4c7f0901077f/bin/utaipan-WLngWcDbfI/data/c8c444ffb/5e15f4d2079348158f3d0acac3a4aabf [2021-10-11 02:22:06,557 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:22:06,559 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:22:06,561 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:22:06,562 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:22:06,566 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:22:06,567 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:22:06" (1/1) ... [2021-10-11 02:22:06,569 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c3a7e01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:06, skipping insertion in model container [2021-10-11 02:22:06,569 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:22:06" (1/1) ... [2021-10-11 02:22:06,578 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:22:06,676 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:22:06,893 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_07f565dc-9036-498e-b2c3-4c7f0901077f/sv-benchmarks/c/pthread-wmm/safe015_tso.opt.i[949,962] [2021-10-11 02:22:07,117 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:22:07,129 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:22:07,145 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_07f565dc-9036-498e-b2c3-4c7f0901077f/sv-benchmarks/c/pthread-wmm/safe015_tso.opt.i[949,962] [2021-10-11 02:22:07,206 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:22:07,293 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:22:07,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:07 WrapperNode [2021-10-11 02:22:07,294 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:22:07,296 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:22:07,299 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:22:07,299 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:22:07,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:07" (1/1) ... [2021-10-11 02:22:07,339 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:07" (1/1) ... [2021-10-11 02:22:07,367 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:22:07,368 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:22:07,369 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:22:07,369 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:22:07,380 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:07" (1/1) ... [2021-10-11 02:22:07,381 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:07" (1/1) ... [2021-10-11 02:22:07,393 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:07" (1/1) ... [2021-10-11 02:22:07,393 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:07" (1/1) ... [2021-10-11 02:22:07,401 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:07" (1/1) ... [2021-10-11 02:22:07,403 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:07" (1/1) ... [2021-10-11 02:22:07,405 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:07" (1/1) ... [2021-10-11 02:22:07,414 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:22:07,415 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:22:07,415 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:22:07,416 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:22:07,417 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:07" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f565dc-9036-498e-b2c3-4c7f0901077f/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 02:22:07,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 02:22:07,515 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-11 02:22:07,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:22:07,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:22:07,515 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-11 02:22:07,515 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-11 02:22:07,515 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-11 02:22:07,516 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-11 02:22:07,516 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-10-11 02:22:07,516 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-10-11 02:22:07,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:22:07,516 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-11 02:22:07,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:22:07,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:22:07,518 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 02:22:08,119 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:22:08,119 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-11 02:22:08,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:22:08 BoogieIcfgContainer [2021-10-11 02:22:08,121 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:22:08,124 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:22:08,124 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:22:08,128 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:22:08,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:22:06" (1/3) ... [2021-10-11 02:22:08,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76d2d7f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:22:08, skipping insertion in model container [2021-10-11 02:22:08,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:07" (2/3) ... [2021-10-11 02:22:08,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76d2d7f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:22:08, skipping insertion in model container [2021-10-11 02:22:08,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:22:08" (3/3) ... [2021-10-11 02:22:08,132 INFO L111 eAbstractionObserver]: Analyzing ICFG safe015_tso.opt.i [2021-10-11 02:22:08,150 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-11 02:22:08,150 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:22:08,154 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:22:08,155 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-11 02:22:08,189 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:22:08,189 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:22:08,190 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:22:08,190 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:22:08,190 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:22:08,190 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:22:08,191 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:22:08,191 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:22:08,191 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:22:08,192 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:22:08,192 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:22:08,192 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:22:08,193 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:22:08,193 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:22:08,193 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:22:08,193 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:22:08,193 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:22:08,193 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:22:08,194 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:22:08,194 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:22:08,194 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:22:08,194 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:22:08,194 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:22:08,195 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:22:08,195 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:22:08,195 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:22:08,196 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:22:08,196 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:22:08,196 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:22:08,196 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:22:08,196 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:22:08,197 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:22:08,197 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:22:08,197 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:22:08,198 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:22:08,198 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:22:08,200 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:22:08,201 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:22:08,201 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:22:08,201 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:22:08,207 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:22:08,207 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:22:08,207 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:22:08,207 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:22:08,210 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:22:08,210 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:22:08,210 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:22:08,211 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:22:08,213 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-11 02:22:08,227 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-11 02:22:08,254 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:22:08,255 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:22:08,255 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:22:08,255 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:22:08,255 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:22:08,255 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:22:08,256 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:22:08,256 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:22:08,271 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-11 02:22:08,273 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 74 transitions, 163 flow [2021-10-11 02:22:08,279 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 74 transitions, 163 flow [2021-10-11 02:22:08,282 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 74 transitions, 163 flow [2021-10-11 02:22:08,377 INFO L129 PetriNetUnfolder]: 2/71 cut-off events. [2021-10-11 02:22:08,377 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-11 02:22:08,396 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 2/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-10-11 02:22:08,399 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2021-10-11 02:22:10,841 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2021-10-11 02:22:11,009 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2021-10-11 02:22:11,701 WARN L197 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-10-11 02:22:11,809 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-10-11 02:22:12,000 WARN L197 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-10-11 02:22:12,301 INFO L131 LiptonReduction]: Checked pairs total: 2553 [2021-10-11 02:22:12,301 INFO L133 LiptonReduction]: Total number of compositions: 64 [2021-10-11 02:22:12,309 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2021-10-11 02:22:12,331 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2021-10-11 02:22:12,332 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2021-10-11 02:22:12,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:22:12,339 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:12,339 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:22:12,340 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:12,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:12,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1555009458, now seen corresponding path program 1 times [2021-10-11 02:22:12,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:22:12,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141164048] [2021-10-11 02:22:12,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:22:12,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:12,601 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 02:22:12,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141164048] [2021-10-11 02:22:12,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:12,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-11 02:22:12,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329107116] [2021-10-11 02:22:12,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:22:12,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:22:12,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:22:12,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:22:12,636 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2021-10-11 02:22:12,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:12,713 INFO L93 Difference]: Finished difference Result 457 states and 1253 transitions. [2021-10-11 02:22:12,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:22:12,715 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2021-10-11 02:22:12,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:12,739 INFO L225 Difference]: With dead ends: 457 [2021-10-11 02:22:12,739 INFO L226 Difference]: Without dead ends: 315 [2021-10-11 02:22:12,740 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 02:22:12,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2021-10-11 02:22:12,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 280. [2021-10-11 02:22:12,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2021-10-11 02:22:12,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 739 transitions. [2021-10-11 02:22:12,830 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 739 transitions. Word has length 8 [2021-10-11 02:22:12,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:12,831 INFO L481 AbstractCegarLoop]: Abstraction has 280 states and 739 transitions. [2021-10-11 02:22:12,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:22:12,832 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 739 transitions. [2021-10-11 02:22:12,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:22:12,833 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:12,833 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:22:12,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:22:12,833 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:12,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:12,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1099271783, now seen corresponding path program 1 times [2021-10-11 02:22:12,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:22:12,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61265465] [2021-10-11 02:22:12,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:22:12,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:12,951 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 02:22:12,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61265465] [2021-10-11 02:22:12,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:12,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:22:12,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768002463] [2021-10-11 02:22:12,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:22:12,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:22:12,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:22:12,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:22:12,955 INFO L87 Difference]: Start difference. First operand 280 states and 739 transitions. Second operand 4 states. [2021-10-11 02:22:12,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:12,992 INFO L93 Difference]: Finished difference Result 293 states and 749 transitions. [2021-10-11 02:22:12,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:22:12,993 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-10-11 02:22:12,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:12,997 INFO L225 Difference]: With dead ends: 293 [2021-10-11 02:22:12,997 INFO L226 Difference]: Without dead ends: 293 [2021-10-11 02:22:12,998 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 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 02:22:13,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2021-10-11 02:22:13,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 257. [2021-10-11 02:22:13,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2021-10-11 02:22:13,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 671 transitions. [2021-10-11 02:22:13,052 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 671 transitions. Word has length 9 [2021-10-11 02:22:13,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:13,053 INFO L481 AbstractCegarLoop]: Abstraction has 257 states and 671 transitions. [2021-10-11 02:22:13,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:22:13,053 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 671 transitions. [2021-10-11 02:22:13,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:22:13,055 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:13,055 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:22:13,056 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:22:13,056 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:13,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:13,057 INFO L82 PathProgramCache]: Analyzing trace with hash -285096968, now seen corresponding path program 1 times [2021-10-11 02:22:13,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:22:13,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235735883] [2021-10-11 02:22:13,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:22:13,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:13,135 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 02:22:13,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235735883] [2021-10-11 02:22:13,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:13,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:22:13,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118718782] [2021-10-11 02:22:13,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:22:13,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:22:13,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:22:13,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:22:13,138 INFO L87 Difference]: Start difference. First operand 257 states and 671 transitions. Second operand 4 states. [2021-10-11 02:22:13,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:13,181 INFO L93 Difference]: Finished difference Result 282 states and 718 transitions. [2021-10-11 02:22:13,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:22:13,182 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2021-10-11 02:22:13,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:13,191 INFO L225 Difference]: With dead ends: 282 [2021-10-11 02:22:13,191 INFO L226 Difference]: Without dead ends: 282 [2021-10-11 02:22:13,192 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 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 02:22:13,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-10-11 02:22:13,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 248. [2021-10-11 02:22:13,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2021-10-11 02:22:13,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 641 transitions. [2021-10-11 02:22:13,219 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 641 transitions. Word has length 10 [2021-10-11 02:22:13,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:13,220 INFO L481 AbstractCegarLoop]: Abstraction has 248 states and 641 transitions. [2021-10-11 02:22:13,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:22:13,220 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 641 transitions. [2021-10-11 02:22:13,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:22:13,226 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:13,226 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:22:13,226 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:22:13,226 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:13,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:13,227 INFO L82 PathProgramCache]: Analyzing trace with hash -285109461, now seen corresponding path program 1 times [2021-10-11 02:22:13,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:22:13,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595293589] [2021-10-11 02:22:13,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:22:13,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:13,294 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 02:22:13,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595293589] [2021-10-11 02:22:13,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:13,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:22:13,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419869568] [2021-10-11 02:22:13,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:22:13,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:22:13,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:22:13,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:22:13,297 INFO L87 Difference]: Start difference. First operand 248 states and 641 transitions. Second operand 4 states. [2021-10-11 02:22:13,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:13,326 INFO L93 Difference]: Finished difference Result 264 states and 666 transitions. [2021-10-11 02:22:13,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:22:13,326 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2021-10-11 02:22:13,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:13,329 INFO L225 Difference]: With dead ends: 264 [2021-10-11 02:22:13,329 INFO L226 Difference]: Without dead ends: 264 [2021-10-11 02:22:13,330 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 02:22:13,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-10-11 02:22:13,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 222. [2021-10-11 02:22:13,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2021-10-11 02:22:13,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 562 transitions. [2021-10-11 02:22:13,341 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 562 transitions. Word has length 10 [2021-10-11 02:22:13,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:13,342 INFO L481 AbstractCegarLoop]: Abstraction has 222 states and 562 transitions. [2021-10-11 02:22:13,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:22:13,342 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 562 transitions. [2021-10-11 02:22:13,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 02:22:13,343 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:13,343 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:22:13,343 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:22:13,343 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:13,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:13,344 INFO L82 PathProgramCache]: Analyzing trace with hash -162369203, now seen corresponding path program 1 times [2021-10-11 02:22:13,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:22:13,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136453218] [2021-10-11 02:22:13,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:22:13,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:13,448 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 02:22:13,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136453218] [2021-10-11 02:22:13,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:13,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:22:13,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034266014] [2021-10-11 02:22:13,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:22:13,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:22:13,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:22:13,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:22:13,452 INFO L87 Difference]: Start difference. First operand 222 states and 562 transitions. Second operand 4 states. [2021-10-11 02:22:13,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:13,478 INFO L93 Difference]: Finished difference Result 252 states and 633 transitions. [2021-10-11 02:22:13,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:22:13,479 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2021-10-11 02:22:13,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:13,482 INFO L225 Difference]: With dead ends: 252 [2021-10-11 02:22:13,482 INFO L226 Difference]: Without dead ends: 252 [2021-10-11 02:22:13,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 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 02:22:13,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2021-10-11 02:22:13,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 200. [2021-10-11 02:22:13,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2021-10-11 02:22:13,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 507 transitions. [2021-10-11 02:22:13,491 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 507 transitions. Word has length 11 [2021-10-11 02:22:13,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:13,492 INFO L481 AbstractCegarLoop]: Abstraction has 200 states and 507 transitions. [2021-10-11 02:22:13,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:22:13,492 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 507 transitions. [2021-10-11 02:22:13,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 02:22:13,493 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:13,493 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:22:13,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:22:13,493 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:13,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:13,494 INFO L82 PathProgramCache]: Analyzing trace with hash -732205193, now seen corresponding path program 1 times [2021-10-11 02:22:13,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:22:13,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300649422] [2021-10-11 02:22:13,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:22:13,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:13,574 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 02:22:13,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300649422] [2021-10-11 02:22:13,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:13,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:22:13,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192671473] [2021-10-11 02:22:13,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:22:13,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:22:13,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:22:13,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:22:13,577 INFO L87 Difference]: Start difference. First operand 200 states and 507 transitions. Second operand 5 states. [2021-10-11 02:22:13,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:13,621 INFO L93 Difference]: Finished difference Result 304 states and 741 transitions. [2021-10-11 02:22:13,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:22:13,622 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2021-10-11 02:22:13,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:13,624 INFO L225 Difference]: With dead ends: 304 [2021-10-11 02:22:13,624 INFO L226 Difference]: Without dead ends: 200 [2021-10-11 02:22:13,625 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:22:13,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-10-11 02:22:13,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 176. [2021-10-11 02:22:13,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2021-10-11 02:22:13,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 429 transitions. [2021-10-11 02:22:13,633 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 429 transitions. Word has length 12 [2021-10-11 02:22:13,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:13,634 INFO L481 AbstractCegarLoop]: Abstraction has 176 states and 429 transitions. [2021-10-11 02:22:13,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:22:13,634 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 429 transitions. [2021-10-11 02:22:13,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 02:22:13,635 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:13,635 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:22:13,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:22:13,636 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:13,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:13,637 INFO L82 PathProgramCache]: Analyzing trace with hash -737567573, now seen corresponding path program 2 times [2021-10-11 02:22:13,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:22:13,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741451705] [2021-10-11 02:22:13,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:22:13,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:13,745 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 02:22:13,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741451705] [2021-10-11 02:22:13,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:13,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:22:13,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031154629] [2021-10-11 02:22:13,746 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:22:13,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:22:13,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:22:13,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:22:13,747 INFO L87 Difference]: Start difference. First operand 176 states and 429 transitions. Second operand 5 states. [2021-10-11 02:22:13,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:13,785 INFO L93 Difference]: Finished difference Result 228 states and 521 transitions. [2021-10-11 02:22:13,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:22:13,786 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2021-10-11 02:22:13,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:13,787 INFO L225 Difference]: With dead ends: 228 [2021-10-11 02:22:13,787 INFO L226 Difference]: Without dead ends: 148 [2021-10-11 02:22:13,787 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:22:13,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-10-11 02:22:13,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 124. [2021-10-11 02:22:13,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2021-10-11 02:22:13,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 279 transitions. [2021-10-11 02:22:13,793 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 279 transitions. Word has length 12 [2021-10-11 02:22:13,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:13,793 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 279 transitions. [2021-10-11 02:22:13,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:22:13,793 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 279 transitions. [2021-10-11 02:22:13,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 02:22:13,794 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:13,794 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:22:13,794 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:22:13,794 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:13,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:13,794 INFO L82 PathProgramCache]: Analyzing trace with hash -738490133, now seen corresponding path program 3 times [2021-10-11 02:22:13,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:22:13,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679981761] [2021-10-11 02:22:13,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:22:13,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:13,843 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 02:22:13,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679981761] [2021-10-11 02:22:13,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:13,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:22:13,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275077953] [2021-10-11 02:22:13,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:22:13,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:22:13,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:22:13,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:22:13,845 INFO L87 Difference]: Start difference. First operand 124 states and 279 transitions. Second operand 4 states. [2021-10-11 02:22:13,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:13,876 INFO L93 Difference]: Finished difference Result 138 states and 286 transitions. [2021-10-11 02:22:13,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:22:13,891 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2021-10-11 02:22:13,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:13,892 INFO L225 Difference]: With dead ends: 138 [2021-10-11 02:22:13,892 INFO L226 Difference]: Without dead ends: 106 [2021-10-11 02:22:13,893 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 02:22:13,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-10-11 02:22:13,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2021-10-11 02:22:13,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2021-10-11 02:22:13,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 218 transitions. [2021-10-11 02:22:13,897 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 218 transitions. Word has length 12 [2021-10-11 02:22:13,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:13,898 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 218 transitions. [2021-10-11 02:22:13,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:22:13,898 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 218 transitions. [2021-10-11 02:22:13,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-11 02:22:13,898 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:13,899 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:22:13,899 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 02:22:13,899 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:13,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:13,900 INFO L82 PathProgramCache]: Analyzing trace with hash -1418345754, now seen corresponding path program 1 times [2021-10-11 02:22:13,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:22:13,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378392995] [2021-10-11 02:22:13,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:22:13,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:13,950 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 02:22:13,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378392995] [2021-10-11 02:22:13,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:13,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:22:13,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700075364] [2021-10-11 02:22:13,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:22:13,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:22:13,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:22:13,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:22:13,953 INFO L87 Difference]: Start difference. First operand 106 states and 218 transitions. Second operand 5 states. [2021-10-11 02:22:13,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:13,993 INFO L93 Difference]: Finished difference Result 101 states and 198 transitions. [2021-10-11 02:22:13,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:22:13,994 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2021-10-11 02:22:13,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:13,995 INFO L225 Difference]: With dead ends: 101 [2021-10-11 02:22:13,995 INFO L226 Difference]: Without dead ends: 81 [2021-10-11 02:22:13,995 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:22:13,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-10-11 02:22:13,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2021-10-11 02:22:13,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2021-10-11 02:22:13,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 157 transitions. [2021-10-11 02:22:13,998 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 157 transitions. Word has length 13 [2021-10-11 02:22:13,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:13,999 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 157 transitions. [2021-10-11 02:22:13,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:22:13,999 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 157 transitions. [2021-10-11 02:22:13,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-11 02:22:13,999 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:13,999 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:22:14,000 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-11 02:22:14,000 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:14,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:14,000 INFO L82 PathProgramCache]: Analyzing trace with hash -226822936, now seen corresponding path program 1 times [2021-10-11 02:22:14,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:22:14,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152438821] [2021-10-11 02:22:14,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:22:14,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:14,056 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 02:22:14,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152438821] [2021-10-11 02:22:14,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:14,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:22:14,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911654994] [2021-10-11 02:22:14,057 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:22:14,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:22:14,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:22:14,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:22:14,058 INFO L87 Difference]: Start difference. First operand 81 states and 157 transitions. Second operand 6 states. [2021-10-11 02:22:14,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:14,088 INFO L93 Difference]: Finished difference Result 76 states and 151 transitions. [2021-10-11 02:22:14,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:22:14,088 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2021-10-11 02:22:14,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:14,089 INFO L225 Difference]: With dead ends: 76 [2021-10-11 02:22:14,089 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:22:14,089 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:22:14,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:22:14,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:22:14,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:22:14,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:22:14,090 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-10-11 02:22:14,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:14,090 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:22:14,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:22:14,095 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:22:14,095 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:22:14,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-11 02:22:14,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:22:14 BasicIcfg [2021-10-11 02:22:14,098 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:22:14,098 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:22:14,098 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:22:14,099 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:22:14,099 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:22:08" (3/4) ... [2021-10-11 02:22:14,103 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:22:14,110 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-10-11 02:22:14,111 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-10-11 02:22:14,111 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-10-11 02:22:14,117 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-11 02:22:14,118 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-11 02:22:14,118 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:22:14,118 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:22:14,156 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f565dc-9036-498e-b2c3-4c7f0901077f/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:22:14,157 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:22:14,158 INFO L168 Benchmark]: Toolchain (without parser) took 7598.45 ms. Allocated memory was 98.6 MB in the beginning and 182.5 MB in the end (delta: 83.9 MB). Free memory was 56.8 MB in the beginning and 122.1 MB in the end (delta: -65.4 MB). Peak memory consumption was 18.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:14,158 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 98.6 MB. Free memory is still 74.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:22:14,159 INFO L168 Benchmark]: CACSL2BoogieTranslator took 733.59 ms. Allocated memory is still 98.6 MB. Free memory was 56.5 MB in the beginning and 52.2 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:14,159 INFO L168 Benchmark]: Boogie Procedure Inliner took 71.28 ms. Allocated memory is still 98.6 MB. Free memory was 52.2 MB in the beginning and 50.0 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:14,160 INFO L168 Benchmark]: Boogie Preprocessor took 45.82 ms. Allocated memory is still 98.6 MB. Free memory was 50.0 MB in the beginning and 48.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:14,161 INFO L168 Benchmark]: RCFGBuilder took 706.44 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 48.7 MB in the beginning and 85.8 MB in the end (delta: -37.1 MB). Peak memory consumption was 14.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:14,161 INFO L168 Benchmark]: TraceAbstraction took 5974.10 ms. Allocated memory was 119.5 MB in the beginning and 182.5 MB in the end (delta: 62.9 MB). Free memory was 85.2 MB in the beginning and 125.3 MB in the end (delta: -40.1 MB). Peak memory consumption was 22.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:14,162 INFO L168 Benchmark]: Witness Printer took 58.61 ms. Allocated memory is still 182.5 MB. Free memory was 125.3 MB in the beginning and 122.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:14,165 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 98.6 MB. Free memory is still 74.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 733.59 ms. Allocated memory is still 98.6 MB. Free memory was 56.5 MB in the beginning and 52.2 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 71.28 ms. Allocated memory is still 98.6 MB. Free memory was 52.2 MB in the beginning and 50.0 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 45.82 ms. Allocated memory is still 98.6 MB. Free memory was 50.0 MB in the beginning and 48.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 706.44 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 48.7 MB in the beginning and 85.8 MB in the end (delta: -37.1 MB). Peak memory consumption was 14.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5974.10 ms. Allocated memory was 119.5 MB in the beginning and 182.5 MB in the end (delta: 62.9 MB). Free memory was 85.2 MB in the beginning and 125.3 MB in the end (delta: -40.1 MB). Peak memory consumption was 22.6 MB. Max. memory is 16.1 GB. * Witness Printer took 58.61 ms. Allocated memory is still 182.5 MB. Free memory was 125.3 MB in the beginning and 122.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 796 VarBasedMoverChecksPositive, 42 VarBasedMoverChecksNegative, 9 SemBasedMoverChecksPositive, 33 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 57 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.0s, 82 PlacesBefore, 31 PlacesAfterwards, 74 TransitionsBefore, 22 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 1 ChoiceCompositions, 64 TotalNumberOfCompositions, 2553 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 4 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.8s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.0s, HoareTripleCheckerStatistics: 187 SDtfs, 205 SDslu, 256 SDs, 0 SdLazy, 143 SolverSat, 50 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 247 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 112 NumberOfCodeBlocks, 112 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 102 ConstructedInterpolants, 0 QuantifiedInterpolants, 5766 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...