./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe035_rmo.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_c5b54bf4-dff0-4a7f-b317-52b931dfb8b2/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_c5b54bf4-dff0-4a7f-b317-52b931dfb8b2/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c5b54bf4-dff0-4a7f-b317-52b931dfb8b2/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c5b54bf4-dff0-4a7f-b317-52b931dfb8b2/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe035_rmo.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_c5b54bf4-dff0-4a7f-b317-52b931dfb8b2/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c5b54bf4-dff0-4a7f-b317-52b931dfb8b2/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 3c883a6dbd0aa2778ac31ab70b0ef8a89c30f166 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 19:21:45,306 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 19:21:45,308 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 19:21:45,337 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 19:21:45,337 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 19:21:45,339 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 19:21:45,340 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 19:21:45,343 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 19:21:45,345 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 19:21:45,346 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 19:21:45,347 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 19:21:45,348 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 19:21:45,349 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 19:21:45,350 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 19:21:45,351 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 19:21:45,352 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 19:21:45,353 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 19:21:45,354 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 19:21:45,356 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 19:21:45,359 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 19:21:45,361 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 19:21:45,362 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 19:21:45,363 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 19:21:45,364 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 19:21:45,368 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 19:21:45,368 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 19:21:45,369 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 19:21:45,370 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 19:21:45,370 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 19:21:45,372 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 19:21:45,372 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 19:21:45,373 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 19:21:45,374 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 19:21:45,375 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 19:21:45,376 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 19:21:45,376 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 19:21:45,377 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 19:21:45,377 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 19:21:45,378 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 19:21:45,379 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 19:21:45,379 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 19:21:45,380 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c5b54bf4-dff0-4a7f-b317-52b931dfb8b2/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 19:21:45,411 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 19:21:45,411 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 19:21:45,412 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 19:21:45,412 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 19:21:45,412 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 19:21:45,413 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 19:21:45,413 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 19:21:45,413 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 19:21:45,420 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 19:21:45,420 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 19:21:45,420 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 19:21:45,421 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 19:21:45,421 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 19:21:45,421 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 19:21:45,421 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 19:21:45,422 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 19:21:45,422 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 19:21:45,422 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 19:21:45,422 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 19:21:45,422 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 19:21:45,422 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 19:21:45,422 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 19:21:45,422 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 19:21:45,423 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 19:21:45,423 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 19:21:45,423 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 19:21:45,423 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 19:21:45,423 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 19:21:45,423 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 19:21:45,423 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 19:21:45,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 19:21:45,424 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 19:21:45,424 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 19:21:45,424 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 19:21:45,424 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 19:21:45,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 19:21:45,424 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 19:21:45,425 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 19:21:45,425 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 19:21:45,425 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_c5b54bf4-dff0-4a7f-b317-52b931dfb8b2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_c5b54bf4-dff0-4a7f-b317-52b931dfb8b2/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c883a6dbd0aa2778ac31ab70b0ef8a89c30f166 [2020-12-09 19:21:45,610 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 19:21:45,627 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 19:21:45,629 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 19:21:45,630 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 19:21:45,631 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 19:21:45,631 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c5b54bf4-dff0-4a7f-b317-52b931dfb8b2/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/safe035_rmo.opt.i [2020-12-09 19:21:45,670 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c5b54bf4-dff0-4a7f-b317-52b931dfb8b2/bin/utaipan/data/f1cda5c32/a239c35c682e4899b1b0d66bb0e66e8d/FLAG72076cade [2020-12-09 19:21:46,085 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 19:21:46,085 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c5b54bf4-dff0-4a7f-b317-52b931dfb8b2/sv-benchmarks/c/pthread-wmm/safe035_rmo.opt.i [2020-12-09 19:21:46,096 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c5b54bf4-dff0-4a7f-b317-52b931dfb8b2/bin/utaipan/data/f1cda5c32/a239c35c682e4899b1b0d66bb0e66e8d/FLAG72076cade [2020-12-09 19:21:46,105 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c5b54bf4-dff0-4a7f-b317-52b931dfb8b2/bin/utaipan/data/f1cda5c32/a239c35c682e4899b1b0d66bb0e66e8d [2020-12-09 19:21:46,107 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 19:21:46,108 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 19:21:46,109 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 19:21:46,109 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 19:21:46,111 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 19:21:46,112 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:21:46" (1/1) ... [2020-12-09 19:21:46,113 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b6db739 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:21:46, skipping insertion in model container [2020-12-09 19:21:46,113 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:21:46" (1/1) ... [2020-12-09 19:21:46,119 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 19:21:46,149 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 19:21:46,257 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_c5b54bf4-dff0-4a7f-b317-52b931dfb8b2/sv-benchmarks/c/pthread-wmm/safe035_rmo.opt.i[949,962] [2020-12-09 19:21:46,355 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 19:21:46,362 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 19:21:46,371 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_c5b54bf4-dff0-4a7f-b317-52b931dfb8b2/sv-benchmarks/c/pthread-wmm/safe035_rmo.opt.i[949,962] [2020-12-09 19:21:46,396 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 19:21:46,454 INFO L208 MainTranslator]: Completed translation [2020-12-09 19:21:46,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:21:46 WrapperNode [2020-12-09 19:21:46,455 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 19:21:46,456 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 19:21:46,456 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 19:21:46,456 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 19:21:46,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:21:46" (1/1) ... [2020-12-09 19:21:46,472 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:21:46" (1/1) ... [2020-12-09 19:21:46,487 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 19:21:46,488 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 19:21:46,488 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 19:21:46,488 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 19:21:46,494 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:21:46" (1/1) ... [2020-12-09 19:21:46,494 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:21:46" (1/1) ... [2020-12-09 19:21:46,496 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:21:46" (1/1) ... [2020-12-09 19:21:46,497 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:21:46" (1/1) ... [2020-12-09 19:21:46,501 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:21:46" (1/1) ... [2020-12-09 19:21:46,503 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:21:46" (1/1) ... [2020-12-09 19:21:46,504 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:21:46" (1/1) ... [2020-12-09 19:21:46,507 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 19:21:46,507 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 19:21:46,508 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 19:21:46,508 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 19:21:46,508 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:21:46" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5b54bf4-dff0-4a7f-b317-52b931dfb8b2/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 19:21:46,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-09 19:21:46,563 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-09 19:21:46,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 19:21:46,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 19:21:46,564 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-09 19:21:46,564 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-09 19:21:46,564 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-09 19:21:46,564 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-09 19:21:46,564 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-09 19:21:46,564 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-09 19:21:46,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 19:21:46,564 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-09 19:21:46,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 19:21:46,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 19:21:46,566 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 19:21:46,781 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 19:21:46,782 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-09 19:21:46,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:21:46 BoogieIcfgContainer [2020-12-09 19:21:46,783 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 19:21:46,784 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 19:21:46,784 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 19:21:46,787 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 19:21:46,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:21:46" (1/3) ... [2020-12-09 19:21:46,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bd65596 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:21:46, skipping insertion in model container [2020-12-09 19:21:46,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:21:46" (2/3) ... [2020-12-09 19:21:46,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bd65596 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:21:46, skipping insertion in model container [2020-12-09 19:21:46,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:21:46" (3/3) ... [2020-12-09 19:21:46,789 INFO L111 eAbstractionObserver]: Analyzing ICFG safe035_rmo.opt.i [2020-12-09 19:21:46,798 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-09 19:21:46,798 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 19:21:46,800 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 19:21:46,801 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-09 19:21:46,821 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 19:21:46,821 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 19:21:46,821 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 19:21:46,821 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 19:21:46,822 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 19:21:46,822 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 19:21:46,822 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 19:21:46,822 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 19:21:46,822 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 19:21:46,822 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 19:21:46,822 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 19:21:46,823 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 19:21:46,823 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 19:21:46,823 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 19:21:46,823 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 19:21:46,823 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 19:21:46,823 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 19:21:46,824 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 19:21:46,824 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 19:21:46,824 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 19:21:46,824 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 19:21:46,824 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 19:21:46,824 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 19:21:46,824 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 19:21:46,825 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 19:21:46,825 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 19:21:46,825 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 19:21:46,825 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 19:21:46,825 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 19:21:46,825 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 19:21:46,825 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 19:21:46,825 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 19:21:46,826 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 19:21:46,826 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 19:21:46,826 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 19:21:46,826 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 19:21:46,828 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 19:21:46,828 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 19:21:46,828 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 19:21:46,828 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 19:21:46,832 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 19:21:46,832 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 19:21:46,832 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 19:21:46,832 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 19:21:46,834 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 19:21:46,834 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 19:21:46,834 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 19:21:46,834 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 19:21:46,835 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-09 19:21:46,843 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-09 19:21:46,857 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 19:21:46,857 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 19:21:46,857 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 19:21:46,857 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 19:21:46,858 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 19:21:46,858 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 19:21:46,858 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 19:21:46,858 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 19:21:46,866 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-09 19:21:46,867 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 75 transitions, 165 flow [2020-12-09 19:21:46,869 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 75 transitions, 165 flow [2020-12-09 19:21:46,871 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2020-12-09 19:21:46,900 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2020-12-09 19:21:46,900 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-09 19:21:46,903 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 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. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2020-12-09 19:21:46,911 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2020-12-09 19:21:48,562 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-12-09 19:21:48,756 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-12-09 19:21:48,816 INFO L131 LiptonReduction]: Checked pairs total: 2511 [2020-12-09 19:21:48,816 INFO L133 LiptonReduction]: Total number of compositions: 63 [2020-12-09 19:21:48,820 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-12-09 19:21:48,837 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-12-09 19:21:48,838 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-12-09 19:21:48,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 19:21:48,842 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:21:48,843 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:21:48,843 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:21:48,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:21:48,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1857977145, now seen corresponding path program 1 times [2020-12-09 19:21:48,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:21:48,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226663484] [2020-12-09 19:21:48,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:21:48,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:21:48,965 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 19:21:48,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226663484] [2020-12-09 19:21:48,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:21:48,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 19:21:48,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174750963] [2020-12-09 19:21:48,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 19:21:48,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:21:48,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 19:21:48,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 19:21:48,980 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-12-09 19:21:49,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:21:49,002 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-12-09 19:21:49,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 19:21:49,003 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-09 19:21:49,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:21:49,014 INFO L225 Difference]: With dead ends: 362 [2020-12-09 19:21:49,014 INFO L226 Difference]: Without dead ends: 298 [2020-12-09 19:21:49,015 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 19:21:49,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-12-09 19:21:49,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-12-09 19:21:49,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-12-09 19:21:49,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-12-09 19:21:49,062 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-12-09 19:21:49,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:21:49,063 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-12-09 19:21:49,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 19:21:49,063 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-12-09 19:21:49,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 19:21:49,064 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:21:49,064 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:21:49,064 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 19:21:49,064 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:21:49,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:21:49,065 INFO L82 PathProgramCache]: Analyzing trace with hash -1762722497, now seen corresponding path program 1 times [2020-12-09 19:21:49,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:21:49,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533826925] [2020-12-09 19:21:49,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:21:49,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:21:49,156 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 19:21:49,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533826925] [2020-12-09 19:21:49,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:21:49,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 19:21:49,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487453204] [2020-12-09 19:21:49,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 19:21:49,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:21:49,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 19:21:49,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 19:21:49,158 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-12-09 19:21:49,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:21:49,205 INFO L93 Difference]: Finished difference Result 552 states and 1504 transitions. [2020-12-09 19:21:49,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 19:21:49,206 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-09 19:21:49,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:21:49,210 INFO L225 Difference]: With dead ends: 552 [2020-12-09 19:21:49,210 INFO L226 Difference]: Without dead ends: 382 [2020-12-09 19:21:49,211 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 19:21:49,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2020-12-09 19:21:49,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 298. [2020-12-09 19:21:49,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-12-09 19:21:49,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 792 transitions. [2020-12-09 19:21:49,236 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 792 transitions. Word has length 9 [2020-12-09 19:21:49,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:21:49,236 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 792 transitions. [2020-12-09 19:21:49,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 19:21:49,236 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 792 transitions. [2020-12-09 19:21:49,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 19:21:49,238 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:21:49,238 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:21:49,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 19:21:49,238 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:21:49,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:21:49,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1189149087, now seen corresponding path program 1 times [2020-12-09 19:21:49,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:21:49,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358688983] [2020-12-09 19:21:49,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:21:49,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:21:49,309 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 19:21:49,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358688983] [2020-12-09 19:21:49,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:21:49,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 19:21:49,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461472480] [2020-12-09 19:21:49,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 19:21:49,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:21:49,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 19:21:49,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 19:21:49,312 INFO L87 Difference]: Start difference. First operand 298 states and 792 transitions. Second operand 5 states. [2020-12-09 19:21:49,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:21:49,355 INFO L93 Difference]: Finished difference Result 338 states and 836 transitions. [2020-12-09 19:21:49,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 19:21:49,356 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-09 19:21:49,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:21:49,358 INFO L225 Difference]: With dead ends: 338 [2020-12-09 19:21:49,358 INFO L226 Difference]: Without dead ends: 222 [2020-12-09 19:21:49,358 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 19:21:49,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-12-09 19:21:49,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 182. [2020-12-09 19:21:49,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-12-09 19:21:49,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 468 transitions. [2020-12-09 19:21:49,367 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 468 transitions. Word has length 10 [2020-12-09 19:21:49,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:21:49,367 INFO L481 AbstractCegarLoop]: Abstraction has 182 states and 468 transitions. [2020-12-09 19:21:49,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 19:21:49,368 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 468 transitions. [2020-12-09 19:21:49,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 19:21:49,369 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:21:49,369 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:21:49,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 19:21:49,370 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:21:49,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:21:49,370 INFO L82 PathProgramCache]: Analyzing trace with hash 681758540, now seen corresponding path program 1 times [2020-12-09 19:21:49,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:21:49,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164727871] [2020-12-09 19:21:49,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:21:49,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:21:49,417 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 19:21:49,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164727871] [2020-12-09 19:21:49,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:21:49,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 19:21:49,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188504112] [2020-12-09 19:21:49,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 19:21:49,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:21:49,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 19:21:49,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 19:21:49,419 INFO L87 Difference]: Start difference. First operand 182 states and 468 transitions. Second operand 3 states. [2020-12-09 19:21:49,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:21:49,427 INFO L93 Difference]: Finished difference Result 146 states and 331 transitions. [2020-12-09 19:21:49,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 19:21:49,428 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-12-09 19:21:49,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:21:49,429 INFO L225 Difference]: With dead ends: 146 [2020-12-09 19:21:49,429 INFO L226 Difference]: Without dead ends: 146 [2020-12-09 19:21:49,429 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 [2020-12-09 19:21:49,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-12-09 19:21:49,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-12-09 19:21:49,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-12-09 19:21:49,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 331 transitions. [2020-12-09 19:21:49,434 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 331 transitions. Word has length 12 [2020-12-09 19:21:49,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:21:49,434 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 331 transitions. [2020-12-09 19:21:49,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 19:21:49,434 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 331 transitions. [2020-12-09 19:21:49,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 19:21:49,435 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:21:49,435 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:21:49,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 19:21:49,436 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:21:49,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:21:49,436 INFO L82 PathProgramCache]: Analyzing trace with hash -2034044923, now seen corresponding path program 1 times [2020-12-09 19:21:49,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:21:49,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409531005] [2020-12-09 19:21:49,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:21:49,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:21:49,474 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 19:21:49,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409531005] [2020-12-09 19:21:49,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:21:49,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 19:21:49,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885352136] [2020-12-09 19:21:49,475 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 19:21:49,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:21:49,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 19:21:49,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 19:21:49,475 INFO L87 Difference]: Start difference. First operand 146 states and 331 transitions. Second operand 4 states. [2020-12-09 19:21:49,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:21:49,488 INFO L93 Difference]: Finished difference Result 101 states and 200 transitions. [2020-12-09 19:21:49,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 19:21:49,488 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-09 19:21:49,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:21:49,489 INFO L225 Difference]: With dead ends: 101 [2020-12-09 19:21:49,489 INFO L226 Difference]: Without dead ends: 101 [2020-12-09 19:21:49,489 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 [2020-12-09 19:21:49,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-12-09 19:21:49,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 97. [2020-12-09 19:21:49,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-12-09 19:21:49,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 190 transitions. [2020-12-09 19:21:49,493 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 190 transitions. Word has length 13 [2020-12-09 19:21:49,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:21:49,493 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 190 transitions. [2020-12-09 19:21:49,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 19:21:49,493 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 190 transitions. [2020-12-09 19:21:49,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-09 19:21:49,494 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:21:49,494 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:21:49,494 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 19:21:49,495 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:21:49,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:21:49,495 INFO L82 PathProgramCache]: Analyzing trace with hash -666358640, now seen corresponding path program 1 times [2020-12-09 19:21:49,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:21:49,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134021218] [2020-12-09 19:21:49,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:21:49,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:21:49,541 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 19:21:49,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134021218] [2020-12-09 19:21:49,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:21:49,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 19:21:49,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908562568] [2020-12-09 19:21:49,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 19:21:49,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:21:49,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 19:21:49,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 19:21:49,542 INFO L87 Difference]: Start difference. First operand 97 states and 190 transitions. Second operand 5 states. [2020-12-09 19:21:49,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:21:49,570 INFO L93 Difference]: Finished difference Result 181 states and 338 transitions. [2020-12-09 19:21:49,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 19:21:49,571 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-09 19:21:49,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:21:49,571 INFO L225 Difference]: With dead ends: 181 [2020-12-09 19:21:49,572 INFO L226 Difference]: Without dead ends: 140 [2020-12-09 19:21:49,572 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 19:21:49,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-12-09 19:21:49,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 97. [2020-12-09 19:21:49,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-12-09 19:21:49,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 186 transitions. [2020-12-09 19:21:49,575 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 186 transitions. Word has length 15 [2020-12-09 19:21:49,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:21:49,575 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 186 transitions. [2020-12-09 19:21:49,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 19:21:49,575 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 186 transitions. [2020-12-09 19:21:49,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-09 19:21:49,575 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:21:49,575 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:21:49,576 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 19:21:49,576 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:21:49,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:21:49,576 INFO L82 PathProgramCache]: Analyzing trace with hash -574188510, now seen corresponding path program 2 times [2020-12-09 19:21:49,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:21:49,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590261021] [2020-12-09 19:21:49,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:21:49,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:21:49,607 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 19:21:49,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590261021] [2020-12-09 19:21:49,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:21:49,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 19:21:49,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087515155] [2020-12-09 19:21:49,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 19:21:49,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:21:49,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 19:21:49,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-09 19:21:49,608 INFO L87 Difference]: Start difference. First operand 97 states and 186 transitions. Second operand 5 states. [2020-12-09 19:21:49,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:21:49,627 INFO L93 Difference]: Finished difference Result 77 states and 147 transitions. [2020-12-09 19:21:49,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 19:21:49,628 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-09 19:21:49,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:21:49,628 INFO L225 Difference]: With dead ends: 77 [2020-12-09 19:21:49,628 INFO L226 Difference]: Without dead ends: 69 [2020-12-09 19:21:49,629 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-09 19:21:49,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-12-09 19:21:49,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 65. [2020-12-09 19:21:49,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-12-09 19:21:49,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 123 transitions. [2020-12-09 19:21:49,630 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 123 transitions. Word has length 15 [2020-12-09 19:21:49,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:21:49,630 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 123 transitions. [2020-12-09 19:21:49,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 19:21:49,631 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 123 transitions. [2020-12-09 19:21:49,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-09 19:21:49,631 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:21:49,631 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:21:49,631 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 19:21:49,631 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:21:49,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:21:49,631 INFO L82 PathProgramCache]: Analyzing trace with hash -681441042, now seen corresponding path program 1 times [2020-12-09 19:21:49,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:21:49,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724125814] [2020-12-09 19:21:49,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:21:49,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:21:49,667 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 19:21:49,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724125814] [2020-12-09 19:21:49,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:21:49,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 19:21:49,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833693050] [2020-12-09 19:21:49,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 19:21:49,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:21:49,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 19:21:49,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 19:21:49,668 INFO L87 Difference]: Start difference. First operand 65 states and 123 transitions. Second operand 5 states. [2020-12-09 19:21:49,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:21:49,707 INFO L93 Difference]: Finished difference Result 119 states and 209 transitions. [2020-12-09 19:21:49,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 19:21:49,707 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-09 19:21:49,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:21:49,708 INFO L225 Difference]: With dead ends: 119 [2020-12-09 19:21:49,708 INFO L226 Difference]: Without dead ends: 47 [2020-12-09 19:21:49,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-09 19:21:49,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-12-09 19:21:49,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-12-09 19:21:49,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-12-09 19:21:49,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 76 transitions. [2020-12-09 19:21:49,709 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 76 transitions. Word has length 18 [2020-12-09 19:21:49,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:21:49,710 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 76 transitions. [2020-12-09 19:21:49,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 19:21:49,710 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 76 transitions. [2020-12-09 19:21:49,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-09 19:21:49,710 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:21:49,710 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:21:49,710 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 19:21:49,710 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:21:49,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:21:49,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1665896384, now seen corresponding path program 2 times [2020-12-09 19:21:49,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:21:49,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988941276] [2020-12-09 19:21:49,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:21:49,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:21:49,743 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 19:21:49,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988941276] [2020-12-09 19:21:49,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:21:49,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 19:21:49,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965972530] [2020-12-09 19:21:49,744 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 19:21:49,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:21:49,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 19:21:49,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 19:21:49,745 INFO L87 Difference]: Start difference. First operand 47 states and 76 transitions. Second operand 5 states. [2020-12-09 19:21:49,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:21:49,766 INFO L93 Difference]: Finished difference Result 61 states and 98 transitions. [2020-12-09 19:21:49,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 19:21:49,767 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-09 19:21:49,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:21:49,767 INFO L225 Difference]: With dead ends: 61 [2020-12-09 19:21:49,767 INFO L226 Difference]: Without dead ends: 37 [2020-12-09 19:21:49,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 19:21:49,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-09 19:21:49,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-12-09 19:21:49,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-09 19:21:49,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 57 transitions. [2020-12-09 19:21:49,768 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 57 transitions. Word has length 18 [2020-12-09 19:21:49,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:21:49,769 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 57 transitions. [2020-12-09 19:21:49,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 19:21:49,769 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 57 transitions. [2020-12-09 19:21:49,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-09 19:21:49,769 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:21:49,769 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:21:49,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-09 19:21:49,769 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:21:49,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:21:49,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1696595058, now seen corresponding path program 3 times [2020-12-09 19:21:49,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:21:49,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104009097] [2020-12-09 19:21:49,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:21:49,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:21:49,813 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 19:21:49,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104009097] [2020-12-09 19:21:49,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:21:49,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 19:21:49,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019326842] [2020-12-09 19:21:49,814 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 19:21:49,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:21:49,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 19:21:49,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 19:21:49,814 INFO L87 Difference]: Start difference. First operand 37 states and 57 transitions. Second operand 5 states. [2020-12-09 19:21:49,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:21:49,844 INFO L93 Difference]: Finished difference Result 36 states and 56 transitions. [2020-12-09 19:21:49,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 19:21:49,844 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-09 19:21:49,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:21:49,845 INFO L225 Difference]: With dead ends: 36 [2020-12-09 19:21:49,845 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 19:21:49,845 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 19:21:49,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 19:21:49,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 19:21:49,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 19:21:49,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 19:21:49,845 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-12-09 19:21:49,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:21:49,845 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 19:21:49,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 19:21:49,845 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 19:21:49,845 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 19:21:49,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-09 19:21:49,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:21:49 BasicIcfg [2020-12-09 19:21:49,848 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 19:21:49,848 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 19:21:49,848 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 19:21:49,848 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 19:21:49,848 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:21:46" (3/4) ... [2020-12-09 19:21:49,850 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 19:21:49,855 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-09 19:21:49,855 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-09 19:21:49,855 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-09 19:21:49,858 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-09 19:21:49,858 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-09 19:21:49,858 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 19:21:49,858 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 19:21:49,884 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_c5b54bf4-dff0-4a7f-b317-52b931dfb8b2/bin/utaipan/witness.graphml [2020-12-09 19:21:49,884 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 19:21:49,885 INFO L168 Benchmark]: Toolchain (without parser) took 3776.86 ms. Allocated memory was 140.5 MB in the beginning and 169.9 MB in the end (delta: 29.4 MB). Free memory was 119.3 MB in the beginning and 87.8 MB in the end (delta: 31.5 MB). Peak memory consumption was 62.5 MB. Max. memory is 16.1 GB. [2020-12-09 19:21:49,885 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 79.7 MB. Free memory was 55.5 MB in the beginning and 55.4 MB in the end (delta: 76.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 19:21:49,886 INFO L168 Benchmark]: CACSL2BoogieTranslator took 346.40 ms. Allocated memory is still 140.5 MB. Free memory was 119.3 MB in the beginning and 88.4 MB in the end (delta: 30.9 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. [2020-12-09 19:21:49,886 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.56 ms. Allocated memory is still 140.5 MB. Free memory was 87.8 MB in the beginning and 86.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 19:21:49,886 INFO L168 Benchmark]: Boogie Preprocessor took 19.29 ms. Allocated memory is still 140.5 MB. Free memory was 86.3 MB in the beginning and 85.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 19:21:49,887 INFO L168 Benchmark]: RCFGBuilder took 275.71 ms. Allocated memory is still 140.5 MB. Free memory was 84.6 MB in the beginning and 62.6 MB in the end (delta: 21.9 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-12-09 19:21:49,887 INFO L168 Benchmark]: TraceAbstraction took 3063.47 ms. Allocated memory was 140.5 MB in the beginning and 169.9 MB in the end (delta: 29.4 MB). Free memory was 62.1 MB in the beginning and 89.9 MB in the end (delta: -27.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 16.1 GB. [2020-12-09 19:21:49,888 INFO L168 Benchmark]: Witness Printer took 36.22 ms. Allocated memory is still 169.9 MB. Free memory was 89.9 MB in the beginning and 87.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 19:21:49,889 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 79.7 MB. Free memory was 55.5 MB in the beginning and 55.4 MB in the end (delta: 76.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 346.40 ms. Allocated memory is still 140.5 MB. Free memory was 119.3 MB in the beginning and 88.4 MB in the end (delta: 30.9 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.56 ms. Allocated memory is still 140.5 MB. Free memory was 87.8 MB in the beginning and 86.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.29 ms. Allocated memory is still 140.5 MB. Free memory was 86.3 MB in the beginning and 85.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 275.71 ms. Allocated memory is still 140.5 MB. Free memory was 84.6 MB in the beginning and 62.6 MB in the end (delta: 21.9 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3063.47 ms. Allocated memory was 140.5 MB in the beginning and 169.9 MB in the end (delta: 29.4 MB). Free memory was 62.1 MB in the beginning and 89.9 MB in the end (delta: -27.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 16.1 GB. * Witness Printer took 36.22 ms. Allocated memory is still 169.9 MB. Free memory was 89.9 MB in the beginning and 87.8 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 845 VarBasedMoverChecksPositive, 39 VarBasedMoverChecksNegative, 7 SemBasedMoverChecksPositive, 32 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 68 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.9s, 83 PlacesBefore, 32 PlacesAfterwards, 75 TransitionsBefore, 23 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 1 ChoiceCompositions, 63 TotalNumberOfCompositions, 2511 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, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.9s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 212 SDtfs, 169 SDslu, 305 SDs, 0 SdLazy, 126 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 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, 10 MinimizatonAttempts, 175 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 136 NumberOfCodeBlocks, 136 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 126 ConstructedInterpolants, 0 QuantifiedInterpolants, 6162 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...