./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe017_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_9efe0c7e-fc59-4219-a8d5-97d3b625f1f9/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9efe0c7e-fc59-4219-a8d5-97d3b625f1f9/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_9efe0c7e-fc59-4219-a8d5-97d3b625f1f9/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9efe0c7e-fc59-4219-a8d5-97d3b625f1f9/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe017_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9efe0c7e-fc59-4219-a8d5-97d3b625f1f9/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_9efe0c7e-fc59-4219-a8d5-97d3b625f1f9/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 65f55760d11a4468ae1abb0511efc1da05ee08b9 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 02:20:27,046 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:20:27,048 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:20:27,097 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:20:27,098 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:20:27,107 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:20:27,110 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:20:27,115 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:20:27,119 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:20:27,130 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:20:27,131 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:20:27,133 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:20:27,134 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:20:27,138 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:20:27,141 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:20:27,143 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:20:27,146 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:20:27,152 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:20:27,155 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:20:27,168 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:20:27,171 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:20:27,173 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:20:27,178 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:20:27,180 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:20:27,185 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:20:27,186 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:20:27,186 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:20:27,190 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:20:27,191 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:20:27,193 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:20:27,194 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:20:27,195 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:20:27,198 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:20:27,200 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:20:27,203 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:20:27,203 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:20:27,205 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:20:27,205 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:20:27,206 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:20:27,207 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:20:27,208 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:20:27,210 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9efe0c7e-fc59-4219-a8d5-97d3b625f1f9/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:20:27,265 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:20:27,265 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:20:27,267 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:20:27,267 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:20:27,268 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:20:27,268 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:20:27,268 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:20:27,269 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:20:27,276 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:20:27,277 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:20:27,278 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:20:27,279 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:20:27,279 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:20:27,279 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:20:27,280 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:20:27,281 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:20:27,281 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:20:27,281 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:20:27,282 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:20:27,282 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:20:27,282 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:20:27,283 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:20:27,283 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:20:27,283 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:20:27,284 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:20:27,284 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:20:27,284 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:20:27,285 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:20:27,285 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:20:27,287 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:20:27,287 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:20:27,288 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:20:27,288 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:20:27,289 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:20:27,289 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:20:27,289 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:20:27,290 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:20:27,290 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:20:27,290 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:20:27,291 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_9efe0c7e-fc59-4219-a8d5-97d3b625f1f9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9efe0c7e-fc59-4219-a8d5-97d3b625f1f9/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 65f55760d11a4468ae1abb0511efc1da05ee08b9 [2021-10-11 02:20:27,639 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:20:27,691 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:20:27,694 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:20:27,696 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:20:27,697 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:20:27,698 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9efe0c7e-fc59-4219-a8d5-97d3b625f1f9/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/pthread-wmm/safe017_tso.opt.i [2021-10-11 02:20:27,793 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9efe0c7e-fc59-4219-a8d5-97d3b625f1f9/bin/utaipan-WLngWcDbfI/data/70d78aa5d/d4567afb9dce44aaad41a8c30ffad064/FLAG717203d04 [2021-10-11 02:20:28,475 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:20:28,476 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9efe0c7e-fc59-4219-a8d5-97d3b625f1f9/sv-benchmarks/c/pthread-wmm/safe017_tso.opt.i [2021-10-11 02:20:28,514 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9efe0c7e-fc59-4219-a8d5-97d3b625f1f9/bin/utaipan-WLngWcDbfI/data/70d78aa5d/d4567afb9dce44aaad41a8c30ffad064/FLAG717203d04 [2021-10-11 02:20:28,739 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9efe0c7e-fc59-4219-a8d5-97d3b625f1f9/bin/utaipan-WLngWcDbfI/data/70d78aa5d/d4567afb9dce44aaad41a8c30ffad064 [2021-10-11 02:20:28,743 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:20:28,746 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:20:28,753 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:20:28,753 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:20:28,761 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:20:28,763 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:20:28" (1/1) ... [2021-10-11 02:20:28,766 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39914ef9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:28, skipping insertion in model container [2021-10-11 02:20:28,766 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:20:28" (1/1) ... [2021-10-11 02:20:28,775 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:20:28,859 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:20:29,131 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_9efe0c7e-fc59-4219-a8d5-97d3b625f1f9/sv-benchmarks/c/pthread-wmm/safe017_tso.opt.i[949,962] [2021-10-11 02:20:29,326 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:20:29,337 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:20:29,353 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_9efe0c7e-fc59-4219-a8d5-97d3b625f1f9/sv-benchmarks/c/pthread-wmm/safe017_tso.opt.i[949,962] [2021-10-11 02:20:29,393 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:20:29,493 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:20:29,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:29 WrapperNode [2021-10-11 02:20:29,494 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:20:29,496 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:20:29,496 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:20:29,496 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:20:29,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:29" (1/1) ... [2021-10-11 02:20:29,523 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:29" (1/1) ... [2021-10-11 02:20:29,547 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:20:29,548 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:20:29,549 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:20:29,549 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:20:29,559 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:29" (1/1) ... [2021-10-11 02:20:29,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:29" (1/1) ... [2021-10-11 02:20:29,563 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:29" (1/1) ... [2021-10-11 02:20:29,564 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:29" (1/1) ... [2021-10-11 02:20:29,571 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:29" (1/1) ... [2021-10-11 02:20:29,574 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:29" (1/1) ... [2021-10-11 02:20:29,576 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:29" (1/1) ... [2021-10-11 02:20:29,580 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:20:29,581 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:20:29,581 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:20:29,582 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:20:29,583 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:29" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9efe0c7e-fc59-4219-a8d5-97d3b625f1f9/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 02:20:29,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 02:20:29,687 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-11 02:20:29,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:20:29,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:20:29,688 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-11 02:20:29,688 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-11 02:20:29,690 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-11 02:20:29,691 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-11 02:20:29,691 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-10-11 02:20:29,691 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-10-11 02:20:29,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:20:29,692 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-11 02:20:29,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:20:29,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:20:29,694 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 02:20:30,210 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:20:30,211 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-11 02:20:30,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:20:30 BoogieIcfgContainer [2021-10-11 02:20:30,213 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:20:30,216 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:20:30,216 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:20:30,220 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:20:30,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:20:28" (1/3) ... [2021-10-11 02:20:30,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ddc4d75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:20:30, skipping insertion in model container [2021-10-11 02:20:30,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:29" (2/3) ... [2021-10-11 02:20:30,222 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ddc4d75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:20:30, skipping insertion in model container [2021-10-11 02:20:30,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:20:30" (3/3) ... [2021-10-11 02:20:30,224 INFO L111 eAbstractionObserver]: Analyzing ICFG safe017_tso.opt.i [2021-10-11 02:20:30,241 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-11 02:20:30,241 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:20:30,246 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:20:30,247 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-11 02:20:30,280 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:30,281 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:30,281 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:30,281 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:30,282 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:30,282 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:30,282 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:30,283 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:30,283 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:30,283 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:30,284 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:30,284 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:30,285 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:30,285 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:30,285 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:30,285 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:30,286 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:30,286 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:30,286 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:30,286 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:30,287 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:30,287 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:30,287 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:30,288 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:30,288 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:30,288 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:30,289 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:30,289 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:30,289 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:30,290 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:30,290 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:30,290 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:30,291 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:30,291 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:30,291 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:30,291 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:30,294 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:30,294 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:30,295 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:30,295 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:30,300 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:30,301 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:30,301 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:30,301 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:30,304 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:30,304 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:30,305 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:30,305 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:30,307 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-11 02:20:30,321 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-11 02:20:30,347 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:20:30,348 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:20:30,348 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:20:30,348 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:20:30,348 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:20:30,349 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:20:30,349 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:20:30,349 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:20:30,363 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-11 02:20:30,366 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 72 transitions, 159 flow [2021-10-11 02:20:30,370 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 80 places, 72 transitions, 159 flow [2021-10-11 02:20:30,372 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 80 places, 72 transitions, 159 flow [2021-10-11 02:20:30,421 INFO L129 PetriNetUnfolder]: 2/69 cut-off events. [2021-10-11 02:20:30,422 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-11 02:20:30,430 INFO L84 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 69 events. 2/69 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 50 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2021-10-11 02:20:30,436 INFO L116 LiptonReduction]: Number of co-enabled transitions 1212 [2021-10-11 02:20:33,286 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2021-10-11 02:20:33,903 WARN L197 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2021-10-11 02:20:34,056 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-10-11 02:20:34,257 WARN L197 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2021-10-11 02:20:34,607 INFO L131 LiptonReduction]: Checked pairs total: 2267 [2021-10-11 02:20:34,608 INFO L133 LiptonReduction]: Total number of compositions: 64 [2021-10-11 02:20:34,615 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 21 transitions, 57 flow [2021-10-11 02:20:34,640 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 226 states. [2021-10-11 02:20:34,642 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states. [2021-10-11 02:20:34,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:20:34,650 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:34,651 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:34,652 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:34,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:34,659 INFO L82 PathProgramCache]: Analyzing trace with hash 968887471, now seen corresponding path program 1 times [2021-10-11 02:20:34,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:34,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546397620] [2021-10-11 02:20:34,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:34,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:34,997 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 02:20:34,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546397620] [2021-10-11 02:20:35,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:35,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-11 02:20:35,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567637028] [2021-10-11 02:20:35,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:20:35,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:35,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:20:35,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:35,039 INFO L87 Difference]: Start difference. First operand 226 states. Second operand 3 states. [2021-10-11 02:20:35,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:35,121 INFO L93 Difference]: Finished difference Result 356 states and 939 transitions. [2021-10-11 02:20:35,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:20:35,123 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2021-10-11 02:20:35,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:35,146 INFO L225 Difference]: With dead ends: 356 [2021-10-11 02:20:35,147 INFO L226 Difference]: Without dead ends: 237 [2021-10-11 02:20:35,149 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 02:20:35,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-10-11 02:20:35,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 209. [2021-10-11 02:20:35,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2021-10-11 02:20:35,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 526 transitions. [2021-10-11 02:20:35,217 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 526 transitions. Word has length 8 [2021-10-11 02:20:35,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:35,217 INFO L481 AbstractCegarLoop]: Abstraction has 209 states and 526 transitions. [2021-10-11 02:20:35,217 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:20:35,218 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 526 transitions. [2021-10-11 02:20:35,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:20:35,219 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:35,219 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:35,219 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:20:35,220 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:35,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:35,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1958496591, now seen corresponding path program 1 times [2021-10-11 02:20:35,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:35,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595099995] [2021-10-11 02:20:35,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:35,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:35,340 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 02:20:35,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595099995] [2021-10-11 02:20:35,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:35,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-11 02:20:35,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226850316] [2021-10-11 02:20:35,344 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:20:35,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:35,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:20:35,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:35,346 INFO L87 Difference]: Start difference. First operand 209 states and 526 transitions. Second operand 3 states. [2021-10-11 02:20:35,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:35,363 INFO L93 Difference]: Finished difference Result 200 states and 497 transitions. [2021-10-11 02:20:35,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:20:35,364 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2021-10-11 02:20:35,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:35,367 INFO L225 Difference]: With dead ends: 200 [2021-10-11 02:20:35,367 INFO L226 Difference]: Without dead ends: 200 [2021-10-11 02:20:35,368 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 02:20:35,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-10-11 02:20:35,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 196. [2021-10-11 02:20:35,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2021-10-11 02:20:35,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 485 transitions. [2021-10-11 02:20:35,390 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 485 transitions. Word has length 9 [2021-10-11 02:20:35,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:35,391 INFO L481 AbstractCegarLoop]: Abstraction has 196 states and 485 transitions. [2021-10-11 02:20:35,391 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:20:35,391 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 485 transitions. [2021-10-11 02:20:35,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:20:35,393 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:35,393 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:35,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:20:35,393 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:35,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:35,394 INFO L82 PathProgramCache]: Analyzing trace with hash -48326288, now seen corresponding path program 1 times [2021-10-11 02:20:35,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:35,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089604891] [2021-10-11 02:20:35,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:35,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:35,519 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 02:20:35,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089604891] [2021-10-11 02:20:35,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:35,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-11 02:20:35,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443218670] [2021-10-11 02:20:35,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:20:35,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:35,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:20:35,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:35,524 INFO L87 Difference]: Start difference. First operand 196 states and 485 transitions. Second operand 3 states. [2021-10-11 02:20:35,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:35,537 INFO L93 Difference]: Finished difference Result 192 states and 471 transitions. [2021-10-11 02:20:35,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:20:35,538 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2021-10-11 02:20:35,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:35,545 INFO L225 Difference]: With dead ends: 192 [2021-10-11 02:20:35,545 INFO L226 Difference]: Without dead ends: 192 [2021-10-11 02:20:35,546 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 02:20:35,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-10-11 02:20:35,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2021-10-11 02:20:35,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2021-10-11 02:20:35,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 471 transitions. [2021-10-11 02:20:35,588 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 471 transitions. Word has length 9 [2021-10-11 02:20:35,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:35,589 INFO L481 AbstractCegarLoop]: Abstraction has 192 states and 471 transitions. [2021-10-11 02:20:35,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:20:35,589 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 471 transitions. [2021-10-11 02:20:35,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:20:35,595 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:35,596 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:35,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:20:35,596 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:35,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:35,597 INFO L82 PathProgramCache]: Analyzing trace with hash -602918994, now seen corresponding path program 1 times [2021-10-11 02:20:35,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:35,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939558530] [2021-10-11 02:20:35,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:35,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:35,683 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 02:20:35,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939558530] [2021-10-11 02:20:35,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:35,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:20:35,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11141558] [2021-10-11 02:20:35,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:20:35,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:35,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:20:35,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:20:35,686 INFO L87 Difference]: Start difference. First operand 192 states and 471 transitions. Second operand 4 states. [2021-10-11 02:20:35,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:35,718 INFO L93 Difference]: Finished difference Result 206 states and 492 transitions. [2021-10-11 02:20:35,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:20:35,719 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2021-10-11 02:20:35,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:35,722 INFO L225 Difference]: With dead ends: 206 [2021-10-11 02:20:35,722 INFO L226 Difference]: Without dead ends: 206 [2021-10-11 02:20:35,722 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 02:20:35,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-10-11 02:20:35,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 170. [2021-10-11 02:20:35,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2021-10-11 02:20:35,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 416 transitions. [2021-10-11 02:20:35,750 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 416 transitions. Word has length 10 [2021-10-11 02:20:35,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:35,750 INFO L481 AbstractCegarLoop]: Abstraction has 170 states and 416 transitions. [2021-10-11 02:20:35,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:20:35,751 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 416 transitions. [2021-10-11 02:20:35,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 02:20:35,752 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:35,752 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:35,752 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:20:35,753 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:35,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:35,753 INFO L82 PathProgramCache]: Analyzing trace with hash -779947866, now seen corresponding path program 1 times [2021-10-11 02:20:35,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:35,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811691296] [2021-10-11 02:20:35,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:35,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:35,851 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 02:20:35,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811691296] [2021-10-11 02:20:35,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:35,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:20:35,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763657464] [2021-10-11 02:20:35,853 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:20:35,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:35,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:20:35,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:20:35,854 INFO L87 Difference]: Start difference. First operand 170 states and 416 transitions. Second operand 4 states. [2021-10-11 02:20:35,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:35,878 INFO L93 Difference]: Finished difference Result 216 states and 501 transitions. [2021-10-11 02:20:35,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:20:35,879 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2021-10-11 02:20:35,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:35,881 INFO L225 Difference]: With dead ends: 216 [2021-10-11 02:20:35,881 INFO L226 Difference]: Without dead ends: 192 [2021-10-11 02:20:35,882 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 02:20:35,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-10-11 02:20:35,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 160. [2021-10-11 02:20:35,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2021-10-11 02:20:35,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 381 transitions. [2021-10-11 02:20:35,891 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 381 transitions. Word has length 11 [2021-10-11 02:20:35,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:35,892 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 381 transitions. [2021-10-11 02:20:35,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:20:35,892 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 381 transitions. [2021-10-11 02:20:35,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 02:20:35,894 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:35,894 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:35,894 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:20:35,894 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:35,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:35,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1510620579, now seen corresponding path program 1 times [2021-10-11 02:20:35,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:35,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899694426] [2021-10-11 02:20:35,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:35,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:35,962 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 02:20:35,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899694426] [2021-10-11 02:20:35,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:35,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:20:35,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150958290] [2021-10-11 02:20:35,965 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:20:35,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:35,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:20:35,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:20:35,967 INFO L87 Difference]: Start difference. First operand 160 states and 381 transitions. Second operand 4 states. [2021-10-11 02:20:36,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:36,023 INFO L93 Difference]: Finished difference Result 188 states and 407 transitions. [2021-10-11 02:20:36,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:20:36,024 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2021-10-11 02:20:36,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:36,025 INFO L225 Difference]: With dead ends: 188 [2021-10-11 02:20:36,026 INFO L226 Difference]: Without dead ends: 136 [2021-10-11 02:20:36,028 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 02:20:36,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-10-11 02:20:36,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2021-10-11 02:20:36,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2021-10-11 02:20:36,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 290 transitions. [2021-10-11 02:20:36,035 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 290 transitions. Word has length 11 [2021-10-11 02:20:36,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:36,036 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 290 transitions. [2021-10-11 02:20:36,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:20:36,036 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 290 transitions. [2021-10-11 02:20:36,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 02:20:36,042 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:36,043 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:36,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:20:36,043 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:36,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:36,045 INFO L82 PathProgramCache]: Analyzing trace with hash 253796715, now seen corresponding path program 1 times [2021-10-11 02:20:36,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:36,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180971203] [2021-10-11 02:20:36,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:36,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:36,149 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 02:20:36,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180971203] [2021-10-11 02:20:36,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:36,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:20:36,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420419528] [2021-10-11 02:20:36,151 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:20:36,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:36,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:20:36,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:20:36,153 INFO L87 Difference]: Start difference. First operand 136 states and 290 transitions. Second operand 5 states. [2021-10-11 02:20:36,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:36,223 INFO L93 Difference]: Finished difference Result 136 states and 267 transitions. [2021-10-11 02:20:36,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:20:36,224 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2021-10-11 02:20:36,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:36,225 INFO L225 Difference]: With dead ends: 136 [2021-10-11 02:20:36,226 INFO L226 Difference]: Without dead ends: 95 [2021-10-11 02:20:36,226 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 02:20:36,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-10-11 02:20:36,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2021-10-11 02:20:36,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2021-10-11 02:20:36,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 176 transitions. [2021-10-11 02:20:36,231 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 176 transitions. Word has length 12 [2021-10-11 02:20:36,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:36,232 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 176 transitions. [2021-10-11 02:20:36,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:20:36,232 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 176 transitions. [2021-10-11 02:20:36,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-11 02:20:36,233 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:36,233 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:36,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:20:36,234 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:36,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:36,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1566674326, now seen corresponding path program 1 times [2021-10-11 02:20:36,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:36,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761638690] [2021-10-11 02:20:36,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:36,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:36,278 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 02:20:36,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761638690] [2021-10-11 02:20:36,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:36,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:20:36,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828885303] [2021-10-11 02:20:36,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:20:36,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:36,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:20:36,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:36,281 INFO L87 Difference]: Start difference. First operand 95 states and 176 transitions. Second operand 3 states. [2021-10-11 02:20:36,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:36,292 INFO L93 Difference]: Finished difference Result 120 states and 214 transitions. [2021-10-11 02:20:36,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:20:36,293 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2021-10-11 02:20:36,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:36,294 INFO L225 Difference]: With dead ends: 120 [2021-10-11 02:20:36,294 INFO L226 Difference]: Without dead ends: 96 [2021-10-11 02:20:36,294 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:36,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-10-11 02:20:36,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 89. [2021-10-11 02:20:36,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2021-10-11 02:20:36,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 161 transitions. [2021-10-11 02:20:36,299 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 161 transitions. Word has length 13 [2021-10-11 02:20:36,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:36,300 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 161 transitions. [2021-10-11 02:20:36,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:20:36,300 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 161 transitions. [2021-10-11 02:20:36,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-11 02:20:36,301 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:36,301 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:36,301 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 02:20:36,302 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:36,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:36,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1569554417, now seen corresponding path program 1 times [2021-10-11 02:20:36,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:36,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867104615] [2021-10-11 02:20:36,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:36,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:36,375 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 02:20:36,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867104615] [2021-10-11 02:20:36,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:36,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:20:36,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824914221] [2021-10-11 02:20:36,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:20:36,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:36,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:20:36,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:20:36,378 INFO L87 Difference]: Start difference. First operand 89 states and 161 transitions. Second operand 6 states. [2021-10-11 02:20:36,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:36,449 INFO L93 Difference]: Finished difference Result 85 states and 151 transitions. [2021-10-11 02:20:36,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:20:36,450 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2021-10-11 02:20:36,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:36,451 INFO L225 Difference]: With dead ends: 85 [2021-10-11 02:20:36,451 INFO L226 Difference]: Without dead ends: 26 [2021-10-11 02:20:36,452 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 02:20:36,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-10-11 02:20:36,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-10-11 02:20:36,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-10-11 02:20:36,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 36 transitions. [2021-10-11 02:20:36,454 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 36 transitions. Word has length 14 [2021-10-11 02:20:36,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:36,455 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 36 transitions. [2021-10-11 02:20:36,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:20:36,455 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 36 transitions. [2021-10-11 02:20:36,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-11 02:20:36,456 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:36,456 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:36,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-11 02:20:36,456 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:36,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:36,457 INFO L82 PathProgramCache]: Analyzing trace with hash -974253196, now seen corresponding path program 1 times [2021-10-11 02:20:36,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:36,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750683234] [2021-10-11 02:20:36,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:36,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:36,512 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 02:20:36,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750683234] [2021-10-11 02:20:36,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:36,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:20:36,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541194701] [2021-10-11 02:20:36,514 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:20:36,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:36,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:20:36,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:20:36,515 INFO L87 Difference]: Start difference. First operand 26 states and 36 transitions. Second operand 4 states. [2021-10-11 02:20:36,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:36,532 INFO L93 Difference]: Finished difference Result 25 states and 35 transitions. [2021-10-11 02:20:36,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:20:36,533 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2021-10-11 02:20:36,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:36,534 INFO L225 Difference]: With dead ends: 25 [2021-10-11 02:20:36,534 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:20:36,534 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 02:20:36,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:20:36,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:20:36,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:20:36,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:20:36,536 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-10-11 02:20:36,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:36,536 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:20:36,536 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:20:36,536 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:20:36,537 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:20:36,537 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-11 02:20:36,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:20:36 BasicIcfg [2021-10-11 02:20:36,540 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:20:36,541 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:20:36,541 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:20:36,542 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:20:36,542 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:20:30" (3/4) ... [2021-10-11 02:20:36,546 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:20:36,553 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-10-11 02:20:36,554 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-10-11 02:20:36,554 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-10-11 02:20:36,559 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-11 02:20:36,560 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-11 02:20:36,560 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:20:36,561 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:20:36,604 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9efe0c7e-fc59-4219-a8d5-97d3b625f1f9/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:20:36,608 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:20:36,609 INFO L168 Benchmark]: Toolchain (without parser) took 7862.54 ms. Allocated memory was 90.2 MB in the beginning and 199.2 MB in the end (delta: 109.1 MB). Free memory was 52.7 MB in the beginning and 132.1 MB in the end (delta: -79.4 MB). Peak memory consumption was 28.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:20:36,610 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 90.2 MB. Free memory is still 71.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:20:36,610 INFO L168 Benchmark]: CACSL2BoogieTranslator took 742.01 ms. Allocated memory was 90.2 MB in the beginning and 125.8 MB in the end (delta: 35.7 MB). Free memory was 52.5 MB in the beginning and 81.0 MB in the end (delta: -28.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:20:36,611 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.19 ms. Allocated memory is still 125.8 MB. Free memory was 81.0 MB in the beginning and 79.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:20:36,616 INFO L168 Benchmark]: Boogie Preprocessor took 31.76 ms. Allocated memory is still 125.8 MB. Free memory was 79.3 MB in the beginning and 77.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:20:36,616 INFO L168 Benchmark]: RCFGBuilder took 632.61 ms. Allocated memory is still 125.8 MB. Free memory was 77.7 MB in the beginning and 56.3 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:20:36,617 INFO L168 Benchmark]: TraceAbstraction took 6325.07 ms. Allocated memory was 125.8 MB in the beginning and 199.2 MB in the end (delta: 73.4 MB). Free memory was 55.8 MB in the beginning and 134.2 MB in the end (delta: -78.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:20:36,618 INFO L168 Benchmark]: Witness Printer took 66.72 ms. Allocated memory is still 199.2 MB. Free memory was 134.2 MB in the beginning and 132.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:20:36,621 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 90.2 MB. Free memory is still 71.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 742.01 ms. Allocated memory was 90.2 MB in the beginning and 125.8 MB in the end (delta: 35.7 MB). Free memory was 52.5 MB in the beginning and 81.0 MB in the end (delta: -28.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 52.19 ms. Allocated memory is still 125.8 MB. Free memory was 81.0 MB in the beginning and 79.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.76 ms. Allocated memory is still 125.8 MB. Free memory was 79.3 MB in the beginning and 77.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 632.61 ms. Allocated memory is still 125.8 MB. Free memory was 77.7 MB in the beginning and 56.3 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6325.07 ms. Allocated memory was 125.8 MB in the beginning and 199.2 MB in the end (delta: 73.4 MB). Free memory was 55.8 MB in the beginning and 134.2 MB in the end (delta: -78.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 66.72 ms. Allocated memory is still 199.2 MB. Free memory was 134.2 MB in the beginning and 132.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 812 VarBasedMoverChecksPositive, 39 VarBasedMoverChecksNegative, 9 SemBasedMoverChecksPositive, 30 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.5s, 55 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.2s, 80 PlacesBefore, 30 PlacesAfterwards, 72 TransitionsBefore, 21 TransitionsAfterwards, 1212 CoEnabledTransitionPairs, 6 FixpointIterations, 16 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 64 TotalNumberOfCompositions, 2267 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, 71 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.1s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.2s, HoareTripleCheckerStatistics: 176 SDtfs, 114 SDslu, 182 SDs, 0 SdLazy, 119 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred 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, 107 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 103 ConstructedInterpolants, 0 QuantifiedInterpolants, 4345 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...