./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe032_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-vcloud-master/worker/run_dir_59ee9a5b-2e1d-4cf9-8574-41eaa36a4d20/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_59ee9a5b-2e1d-4cf9-8574-41eaa36a4d20/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_59ee9a5b-2e1d-4cf9-8574-41eaa36a4d20/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_59ee9a5b-2e1d-4cf9-8574-41eaa36a4d20/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe032_tso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_59ee9a5b-2e1d-4cf9-8574-41eaa36a4d20/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_59ee9a5b-2e1d-4cf9-8574-41eaa36a4d20/bin/utaipan --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 72b5cfc065b99dee03c9feb5080303d7e06155db ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 05:22:35,289 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 05:22:35,291 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 05:22:35,335 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 05:22:35,336 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 05:22:35,337 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 05:22:35,338 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 05:22:35,340 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 05:22:35,341 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 05:22:35,342 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 05:22:35,343 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 05:22:35,344 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 05:22:35,344 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 05:22:35,345 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 05:22:35,346 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 05:22:35,347 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 05:22:35,348 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 05:22:35,349 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 05:22:35,350 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 05:22:35,352 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 05:22:35,353 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 05:22:35,354 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 05:22:35,356 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 05:22:35,356 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 05:22:35,359 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 05:22:35,359 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 05:22:35,359 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 05:22:35,360 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 05:22:35,361 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 05:22:35,361 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 05:22:35,362 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 05:22:35,362 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 05:22:35,363 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 05:22:35,364 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 05:22:35,365 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 05:22:35,365 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 05:22:35,365 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 05:22:35,365 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 05:22:35,366 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 05:22:35,366 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 05:22:35,367 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 05:22:35,368 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_59ee9a5b-2e1d-4cf9-8574-41eaa36a4d20/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 05:22:35,384 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 05:22:35,384 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 05:22:35,385 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 05:22:35,385 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 05:22:35,385 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 05:22:35,385 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 05:22:35,386 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 05:22:35,386 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 05:22:35,386 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 05:22:35,386 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 05:22:35,386 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 05:22:35,386 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 05:22:35,386 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 05:22:35,386 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 05:22:35,386 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 05:22:35,387 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 05:22:35,387 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 05:22:35,387 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 05:22:35,387 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 05:22:35,387 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 05:22:35,388 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 05:22:35,388 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 05:22:35,388 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 05:22:35,388 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 05:22:35,388 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 05:22:35,388 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 05:22:35,388 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 05:22:35,388 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 05:22:35,389 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 05:22:35,389 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 05:22:35,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 05:22:35,389 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 05:22:35,389 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 05:22:35,389 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 05:22:35,389 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 05:22:35,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 05:22:35,390 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 05:22:35,390 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 05:22:35,390 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 05:22:35,390 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-vcloud-master/worker/run_dir_59ee9a5b-2e1d-4cf9-8574-41eaa36a4d20/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_59ee9a5b-2e1d-4cf9-8574-41eaa36a4d20/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 72b5cfc065b99dee03c9feb5080303d7e06155db [2020-12-09 05:22:35,578 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 05:22:35,597 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 05:22:35,599 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 05:22:35,600 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 05:22:35,601 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 05:22:35,601 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_59ee9a5b-2e1d-4cf9-8574-41eaa36a4d20/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/safe032_tso.opt.i [2020-12-09 05:22:35,642 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_59ee9a5b-2e1d-4cf9-8574-41eaa36a4d20/bin/utaipan/data/dc9b91be2/bfbac49ebc06423fa2435199e0bac231/FLAG9d7ab9603 [2020-12-09 05:22:36,055 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 05:22:36,056 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_59ee9a5b-2e1d-4cf9-8574-41eaa36a4d20/sv-benchmarks/c/pthread-wmm/safe032_tso.opt.i [2020-12-09 05:22:36,067 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_59ee9a5b-2e1d-4cf9-8574-41eaa36a4d20/bin/utaipan/data/dc9b91be2/bfbac49ebc06423fa2435199e0bac231/FLAG9d7ab9603 [2020-12-09 05:22:36,078 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_59ee9a5b-2e1d-4cf9-8574-41eaa36a4d20/bin/utaipan/data/dc9b91be2/bfbac49ebc06423fa2435199e0bac231 [2020-12-09 05:22:36,080 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 05:22:36,081 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 05:22:36,082 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 05:22:36,083 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 05:22:36,085 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 05:22:36,085 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:22:36" (1/1) ... [2020-12-09 05:22:36,087 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cce5804 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:22:36, skipping insertion in model container [2020-12-09 05:22:36,087 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:22:36" (1/1) ... [2020-12-09 05:22:36,092 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 05:22:36,128 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 05:22:36,230 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_59ee9a5b-2e1d-4cf9-8574-41eaa36a4d20/sv-benchmarks/c/pthread-wmm/safe032_tso.opt.i[949,962] [2020-12-09 05:22:36,326 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 05:22:36,332 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 05:22:36,341 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_59ee9a5b-2e1d-4cf9-8574-41eaa36a4d20/sv-benchmarks/c/pthread-wmm/safe032_tso.opt.i[949,962] [2020-12-09 05:22:36,374 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 05:22:36,442 INFO L208 MainTranslator]: Completed translation [2020-12-09 05:22:36,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:22:36 WrapperNode [2020-12-09 05:22:36,443 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 05:22:36,444 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 05:22:36,444 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 05:22:36,444 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 05:22:36,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:22:36" (1/1) ... [2020-12-09 05:22:36,466 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:22:36" (1/1) ... [2020-12-09 05:22:36,485 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 05:22:36,485 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 05:22:36,486 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 05:22:36,486 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 05:22:36,494 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:22:36" (1/1) ... [2020-12-09 05:22:36,494 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:22:36" (1/1) ... [2020-12-09 05:22:36,497 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:22:36" (1/1) ... [2020-12-09 05:22:36,497 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:22:36" (1/1) ... [2020-12-09 05:22:36,503 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:22:36" (1/1) ... [2020-12-09 05:22:36,505 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:22:36" (1/1) ... [2020-12-09 05:22:36,507 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:22:36" (1/1) ... [2020-12-09 05:22:36,510 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 05:22:36,510 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 05:22:36,511 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 05:22:36,511 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 05:22:36,511 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:22:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_59ee9a5b-2e1d-4cf9-8574-41eaa36a4d20/bin/utaipan/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 [2020-12-09 05:22:36,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-09 05:22:36,581 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-09 05:22:36,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 05:22:36,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 05:22:36,581 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-09 05:22:36,581 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-09 05:22:36,581 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-09 05:22:36,581 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-09 05:22:36,582 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-09 05:22:36,585 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-09 05:22:36,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 05:22:36,586 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-09 05:22:36,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 05:22:36,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 05:22:36,587 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-09 05:22:36,811 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 05:22:36,811 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-09 05:22:36,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:22:36 BoogieIcfgContainer [2020-12-09 05:22:36,813 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 05:22:36,814 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 05:22:36,814 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 05:22:36,818 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 05:22:36,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 05:22:36" (1/3) ... [2020-12-09 05:22:36,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25256b24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:22:36, skipping insertion in model container [2020-12-09 05:22:36,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:22:36" (2/3) ... [2020-12-09 05:22:36,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25256b24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:22:36, skipping insertion in model container [2020-12-09 05:22:36,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:22:36" (3/3) ... [2020-12-09 05:22:36,821 INFO L111 eAbstractionObserver]: Analyzing ICFG safe032_tso.opt.i [2020-12-09 05:22:36,833 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-09 05:22:36,833 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 05:22:36,835 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 05:22:36,836 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-09 05:22:36,859 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:22:36,859 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:22:36,860 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:22:36,860 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:22:36,860 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:22:36,860 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:22:36,860 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:22:36,861 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:22:36,861 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:22:36,861 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:22:36,861 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:22:36,862 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:22:36,862 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:22:36,862 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:22:36,862 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:22:36,862 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:22:36,863 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:22:36,863 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:22:36,863 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:22:36,863 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:22:36,863 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:22:36,864 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:22:36,864 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:22:36,864 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:22:36,864 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:22:36,865 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:22:36,865 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:22:36,865 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:22:36,865 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:22:36,865 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:22:36,865 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:22:36,865 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:22:36,866 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:22:36,866 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:22:36,866 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:22:36,866 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:22:36,868 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:22:36,869 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:22:36,869 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:22:36,869 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:22:36,874 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:22:36,874 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:22:36,874 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:22:36,874 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:22:36,876 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:22:36,877 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:22:36,877 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:22:36,877 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:22:36,879 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-09 05:22:36,889 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-09 05:22:36,907 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 05:22:36,907 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 05:22:36,908 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 05:22:36,908 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 05:22:36,908 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 05:22:36,908 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 05:22:36,908 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 05:22:36,908 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 05:22:36,919 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-09 05:22:36,921 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 74 transitions, 163 flow [2020-12-09 05:22:36,924 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 74 transitions, 163 flow [2020-12-09 05:22:36,925 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 74 transitions, 163 flow [2020-12-09 05:22:36,963 INFO L129 PetriNetUnfolder]: 2/71 cut-off events. [2020-12-09 05:22:36,963 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-09 05:22:36,967 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 54 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. [2020-12-09 05:22:36,970 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2020-12-09 05:22:38,628 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-12-09 05:22:38,816 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-12-09 05:22:38,900 INFO L131 LiptonReduction]: Checked pairs total: 2571 [2020-12-09 05:22:38,900 INFO L133 LiptonReduction]: Total number of compositions: 60 [2020-12-09 05:22:38,904 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-12-09 05:22:38,922 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-12-09 05:22:38,923 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-12-09 05:22:38,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 05:22:38,927 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:22:38,928 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:22:38,928 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:22:38,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:22:38,932 INFO L82 PathProgramCache]: Analyzing trace with hash 421261709, now seen corresponding path program 1 times [2020-12-09 05:22:38,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:22:38,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115638724] [2020-12-09 05:22:38,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:22:39,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:22:39,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:22:39,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115638724] [2020-12-09 05:22:39,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:22:39,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 05:22:39,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905293158] [2020-12-09 05:22:39,048 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 05:22:39,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:22:39,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 05:22:39,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 05:22:39,058 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-12-09 05:22:39,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:22:39,080 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-12-09 05:22:39,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 05:22:39,080 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-09 05:22:39,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:22:39,090 INFO L225 Difference]: With dead ends: 362 [2020-12-09 05:22:39,091 INFO L226 Difference]: Without dead ends: 298 [2020-12-09 05:22:39,091 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 05:22:39,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-12-09 05:22:39,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-12-09 05:22:39,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-12-09 05:22:39,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-12-09 05:22:39,137 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-12-09 05:22:39,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:22:39,138 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-12-09 05:22:39,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 05:22:39,138 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-12-09 05:22:39,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 05:22:39,139 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:22:39,139 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:22:39,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 05:22:39,140 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:22:39,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:22:39,140 INFO L82 PathProgramCache]: Analyzing trace with hash 174206349, now seen corresponding path program 1 times [2020-12-09 05:22:39,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:22:39,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916947864] [2020-12-09 05:22:39,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:22:39,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:22:39,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:22:39,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916947864] [2020-12-09 05:22:39,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:22:39,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 05:22:39,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646494783] [2020-12-09 05:22:39,232 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 05:22:39,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:22:39,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 05:22:39,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:22:39,233 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-12-09 05:22:39,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:22:39,270 INFO L93 Difference]: Finished difference Result 485 states and 1373 transitions. [2020-12-09 05:22:39,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 05:22:39,270 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-09 05:22:39,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:22:39,273 INFO L225 Difference]: With dead ends: 485 [2020-12-09 05:22:39,273 INFO L226 Difference]: Without dead ends: 326 [2020-12-09 05:22:39,273 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 [2020-12-09 05:22:39,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-12-09 05:22:39,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 276. [2020-12-09 05:22:39,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2020-12-09 05:22:39,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 716 transitions. [2020-12-09 05:22:39,290 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 716 transitions. Word has length 9 [2020-12-09 05:22:39,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:22:39,291 INFO L481 AbstractCegarLoop]: Abstraction has 276 states and 716 transitions. [2020-12-09 05:22:39,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 05:22:39,291 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 716 transitions. [2020-12-09 05:22:39,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 05:22:39,292 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:22:39,292 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:22:39,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 05:22:39,292 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:22:39,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:22:39,293 INFO L82 PathProgramCache]: Analyzing trace with hash 403113335, now seen corresponding path program 1 times [2020-12-09 05:22:39,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:22:39,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615695250] [2020-12-09 05:22:39,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:22:39,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:22:39,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:22:39,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615695250] [2020-12-09 05:22:39,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:22:39,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 05:22:39,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249575191] [2020-12-09 05:22:39,350 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 05:22:39,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:22:39,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 05:22:39,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 05:22:39,351 INFO L87 Difference]: Start difference. First operand 276 states and 716 transitions. Second operand 5 states. [2020-12-09 05:22:39,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:22:39,384 INFO L93 Difference]: Finished difference Result 302 states and 732 transitions. [2020-12-09 05:22:39,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 05:22:39,385 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-09 05:22:39,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:22:39,386 INFO L225 Difference]: With dead ends: 302 [2020-12-09 05:22:39,386 INFO L226 Difference]: Without dead ends: 212 [2020-12-09 05:22:39,387 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-09 05:22:39,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-12-09 05:22:39,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 190. [2020-12-09 05:22:39,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-12-09 05:22:39,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 462 transitions. [2020-12-09 05:22:39,395 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 462 transitions. Word has length 10 [2020-12-09 05:22:39,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:22:39,395 INFO L481 AbstractCegarLoop]: Abstraction has 190 states and 462 transitions. [2020-12-09 05:22:39,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 05:22:39,395 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 462 transitions. [2020-12-09 05:22:39,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 05:22:39,396 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:22:39,396 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:22:39,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 05:22:39,396 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:22:39,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:22:39,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1450144045, now seen corresponding path program 1 times [2020-12-09 05:22:39,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:22:39,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715600944] [2020-12-09 05:22:39,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:22:39,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:22:39,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:22:39,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715600944] [2020-12-09 05:22:39,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:22:39,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 05:22:39,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683636097] [2020-12-09 05:22:39,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 05:22:39,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:22:39,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 05:22:39,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 05:22:39,449 INFO L87 Difference]: Start difference. First operand 190 states and 462 transitions. Second operand 5 states. [2020-12-09 05:22:39,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:22:39,489 INFO L93 Difference]: Finished difference Result 226 states and 535 transitions. [2020-12-09 05:22:39,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 05:22:39,489 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-09 05:22:39,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:22:39,491 INFO L225 Difference]: With dead ends: 226 [2020-12-09 05:22:39,491 INFO L226 Difference]: Without dead ends: 198 [2020-12-09 05:22:39,491 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-09 05:22:39,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-12-09 05:22:39,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 174. [2020-12-09 05:22:39,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-12-09 05:22:39,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 416 transitions. [2020-12-09 05:22:39,497 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 416 transitions. Word has length 12 [2020-12-09 05:22:39,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:22:39,497 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 416 transitions. [2020-12-09 05:22:39,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 05:22:39,497 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 416 transitions. [2020-12-09 05:22:39,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 05:22:39,498 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:22:39,499 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:22:39,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 05:22:39,499 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:22:39,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:22:39,499 INFO L82 PathProgramCache]: Analyzing trace with hash 1450133474, now seen corresponding path program 1 times [2020-12-09 05:22:39,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:22:39,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840995253] [2020-12-09 05:22:39,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:22:39,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:22:39,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:22:39,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840995253] [2020-12-09 05:22:39,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:22:39,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 05:22:39,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339224779] [2020-12-09 05:22:39,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 05:22:39,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:22:39,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 05:22:39,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 05:22:39,543 INFO L87 Difference]: Start difference. First operand 174 states and 416 transitions. Second operand 5 states. [2020-12-09 05:22:39,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:22:39,591 INFO L93 Difference]: Finished difference Result 258 states and 590 transitions. [2020-12-09 05:22:39,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 05:22:39,592 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-09 05:22:39,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:22:39,593 INFO L225 Difference]: With dead ends: 258 [2020-12-09 05:22:39,593 INFO L226 Difference]: Without dead ends: 176 [2020-12-09 05:22:39,593 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-09 05:22:39,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-12-09 05:22:39,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 148. [2020-12-09 05:22:39,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-12-09 05:22:39,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 345 transitions. [2020-12-09 05:22:39,597 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 345 transitions. Word has length 12 [2020-12-09 05:22:39,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:22:39,597 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 345 transitions. [2020-12-09 05:22:39,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 05:22:39,597 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 345 transitions. [2020-12-09 05:22:39,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 05:22:39,599 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:22:39,599 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:22:39,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 05:22:39,599 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:22:39,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:22:39,599 INFO L82 PathProgramCache]: Analyzing trace with hash 410097923, now seen corresponding path program 1 times [2020-12-09 05:22:39,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:22:39,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103097880] [2020-12-09 05:22:39,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:22:39,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:22:39,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:22:39,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103097880] [2020-12-09 05:22:39,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:22:39,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 05:22:39,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284210003] [2020-12-09 05:22:39,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 05:22:39,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:22:39,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 05:22:39,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:22:39,647 INFO L87 Difference]: Start difference. First operand 148 states and 345 transitions. Second operand 4 states. [2020-12-09 05:22:39,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:22:39,667 INFO L93 Difference]: Finished difference Result 159 states and 337 transitions. [2020-12-09 05:22:39,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 05:22:39,667 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-09 05:22:39,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:22:39,668 INFO L225 Difference]: With dead ends: 159 [2020-12-09 05:22:39,668 INFO L226 Difference]: Without dead ends: 124 [2020-12-09 05:22:39,669 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 05:22:39,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-12-09 05:22:39,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-12-09 05:22:39,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-12-09 05:22:39,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 261 transitions. [2020-12-09 05:22:39,672 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 261 transitions. Word has length 13 [2020-12-09 05:22:39,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:22:39,672 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 261 transitions. [2020-12-09 05:22:39,672 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 05:22:39,672 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 261 transitions. [2020-12-09 05:22:39,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 05:22:39,673 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:22:39,673 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:22:39,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 05:22:39,673 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:22:39,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:22:39,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1383768558, now seen corresponding path program 1 times [2020-12-09 05:22:39,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:22:39,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805078829] [2020-12-09 05:22:39,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:22:39,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:22:39,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:22:39,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805078829] [2020-12-09 05:22:39,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:22:39,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 05:22:39,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503137659] [2020-12-09 05:22:39,718 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 05:22:39,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:22:39,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 05:22:39,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 05:22:39,719 INFO L87 Difference]: Start difference. First operand 124 states and 261 transitions. Second operand 5 states. [2020-12-09 05:22:39,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:22:39,749 INFO L93 Difference]: Finished difference Result 110 states and 215 transitions. [2020-12-09 05:22:39,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 05:22:39,750 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-09 05:22:39,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:22:39,751 INFO L225 Difference]: With dead ends: 110 [2020-12-09 05:22:39,751 INFO L226 Difference]: Without dead ends: 89 [2020-12-09 05:22:39,751 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 05:22:39,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-12-09 05:22:39,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2020-12-09 05:22:39,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-12-09 05:22:39,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 172 transitions. [2020-12-09 05:22:39,754 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 172 transitions. Word has length 14 [2020-12-09 05:22:39,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:22:39,755 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 172 transitions. [2020-12-09 05:22:39,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 05:22:39,755 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 172 transitions. [2020-12-09 05:22:39,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 05:22:39,755 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:22:39,756 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:22:39,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 05:22:39,756 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:22:39,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:22:39,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1798861421, now seen corresponding path program 1 times [2020-12-09 05:22:39,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:22:39,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172027682] [2020-12-09 05:22:39,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:22:39,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:22:39,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:22:39,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172027682] [2020-12-09 05:22:39,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:22:39,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 05:22:39,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794065833] [2020-12-09 05:22:39,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 05:22:39,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:22:39,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 05:22:39,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 05:22:39,808 INFO L87 Difference]: Start difference. First operand 89 states and 172 transitions. Second operand 6 states. [2020-12-09 05:22:39,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:22:39,828 INFO L93 Difference]: Finished difference Result 79 states and 157 transitions. [2020-12-09 05:22:39,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 05:22:39,829 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-12-09 05:22:39,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:22:39,829 INFO L225 Difference]: With dead ends: 79 [2020-12-09 05:22:39,829 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 05:22:39,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-09 05:22:39,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 05:22:39,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 05:22:39,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 05:22:39,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 05:22:39,830 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-12-09 05:22:39,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:22:39,831 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 05:22:39,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 05:22:39,831 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 05:22:39,831 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 05:22:39,831 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 05:22:39,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 05:22:39 BasicIcfg [2020-12-09 05:22:39,834 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 05:22:39,834 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 05:22:39,834 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 05:22:39,834 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 05:22:39,835 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:22:36" (3/4) ... [2020-12-09 05:22:39,837 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 05:22:39,843 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-09 05:22:39,843 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-09 05:22:39,843 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-09 05:22:39,847 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-09 05:22:39,847 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-09 05:22:39,847 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 05:22:39,847 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 05:22:39,881 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_59ee9a5b-2e1d-4cf9-8574-41eaa36a4d20/bin/utaipan/witness.graphml [2020-12-09 05:22:39,881 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 05:22:39,882 INFO L168 Benchmark]: Toolchain (without parser) took 3800.85 ms. Allocated memory was 123.7 MB in the beginning and 180.4 MB in the end (delta: 56.6 MB). Free memory was 81.8 MB in the beginning and 84.6 MB in the end (delta: -2.8 MB). Peak memory consumption was 56.9 MB. Max. memory is 16.1 GB. [2020-12-09 05:22:39,883 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 123.7 MB. Free memory is still 99.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 05:22:39,883 INFO L168 Benchmark]: CACSL2BoogieTranslator took 360.77 ms. Allocated memory is still 123.7 MB. Free memory was 81.6 MB in the beginning and 86.8 MB in the end (delta: -5.2 MB). Peak memory consumption was 22.3 MB. Max. memory is 16.1 GB. [2020-12-09 05:22:39,883 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.31 ms. Allocated memory is still 123.7 MB. Free memory was 86.8 MB in the beginning and 84.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 05:22:39,884 INFO L168 Benchmark]: Boogie Preprocessor took 24.32 ms. Allocated memory is still 123.7 MB. Free memory was 84.7 MB in the beginning and 83.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 05:22:39,884 INFO L168 Benchmark]: RCFGBuilder took 302.33 ms. Allocated memory is still 123.7 MB. Free memory was 83.6 MB in the beginning and 82.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-09 05:22:39,885 INFO L168 Benchmark]: TraceAbstraction took 3019.78 ms. Allocated memory was 123.7 MB in the beginning and 180.4 MB in the end (delta: 56.6 MB). Free memory was 82.0 MB in the beginning and 87.5 MB in the end (delta: -5.5 MB). Peak memory consumption was 53.5 MB. Max. memory is 16.1 GB. [2020-12-09 05:22:39,885 INFO L168 Benchmark]: Witness Printer took 47.11 ms. Allocated memory is still 180.4 MB. Free memory was 87.5 MB in the beginning and 84.6 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 05:22:39,888 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 123.7 MB. Free memory is still 99.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 360.77 ms. Allocated memory is still 123.7 MB. Free memory was 81.6 MB in the beginning and 86.8 MB in the end (delta: -5.2 MB). Peak memory consumption was 22.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.31 ms. Allocated memory is still 123.7 MB. Free memory was 86.8 MB in the beginning and 84.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.32 ms. Allocated memory is still 123.7 MB. Free memory was 84.7 MB in the beginning and 83.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 302.33 ms. Allocated memory is still 123.7 MB. Free memory was 83.6 MB in the beginning and 82.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3019.78 ms. Allocated memory was 123.7 MB in the beginning and 180.4 MB in the end (delta: 56.6 MB). Free memory was 82.0 MB in the beginning and 87.5 MB in the end (delta: -5.5 MB). Peak memory consumption was 53.5 MB. Max. memory is 16.1 GB. * Witness Printer took 47.11 ms. Allocated memory is still 180.4 MB. Free memory was 87.5 MB in the beginning and 84.6 MB in the end (delta: 2.9 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 833 VarBasedMoverChecksPositive, 41 VarBasedMoverChecksNegative, 7 SemBasedMoverChecksPositive, 34 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 81 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.9s, 82 PlacesBefore, 32 PlacesAfterwards, 74 TransitionsBefore, 23 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 60 TotalNumberOfCompositions, 2571 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: 2.9s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 181 SDtfs, 202 SDslu, 276 SDs, 0 SdLazy, 132 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred 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: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 124 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 94 NumberOfCodeBlocks, 94 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 86 ConstructedInterpolants, 0 QuantifiedInterpolants, 4466 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...