./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/locks/test_locks_7.c --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_e093978d-0f94-4e93-acb1-b72efb373f32/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e093978d-0f94-4e93-acb1-b72efb373f32/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e093978d-0f94-4e93-acb1-b72efb373f32/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e093978d-0f94-4e93-acb1-b72efb373f32/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/locks/test_locks_7.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e093978d-0f94-4e93-acb1-b72efb373f32/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e093978d-0f94-4e93-acb1-b72efb373f32/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 d2a1f90505878c0035f7701a954d17ca4375eb05 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 18:22:15,339 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 18:22:15,341 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 18:22:15,365 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 18:22:15,366 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 18:22:15,367 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 18:22:15,368 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 18:22:15,370 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 18:22:15,371 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 18:22:15,372 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 18:22:15,373 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 18:22:15,374 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 18:22:15,375 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 18:22:15,375 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 18:22:15,376 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 18:22:15,377 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 18:22:15,378 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 18:22:15,379 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 18:22:15,380 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 18:22:15,382 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 18:22:15,384 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 18:22:15,385 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 18:22:15,386 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 18:22:15,387 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 18:22:15,389 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 18:22:15,390 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 18:22:15,390 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 18:22:15,391 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 18:22:15,391 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 18:22:15,392 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 18:22:15,392 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 18:22:15,393 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 18:22:15,394 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 18:22:15,394 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 18:22:15,395 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 18:22:15,396 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 18:22:15,396 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 18:22:15,396 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 18:22:15,396 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 18:22:15,397 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 18:22:15,398 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 18:22:15,398 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e093978d-0f94-4e93-acb1-b72efb373f32/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 18:22:15,415 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 18:22:15,416 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 18:22:15,416 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 18:22:15,416 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 18:22:15,416 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 18:22:15,417 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 18:22:15,417 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 18:22:15,417 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 18:22:15,417 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 18:22:15,417 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 18:22:15,417 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 18:22:15,417 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 18:22:15,417 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 18:22:15,418 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 18:22:15,418 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 18:22:15,418 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 18:22:15,418 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 18:22:15,418 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 18:22:15,418 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 18:22:15,419 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 18:22:15,419 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 18:22:15,419 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 18:22:15,419 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 18:22:15,419 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 18:22:15,419 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 18:22:15,419 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 18:22:15,419 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 18:22:15,419 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 18:22:15,420 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 18:22:15,420 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 18:22:15,420 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 18:22:15,420 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 18:22:15,420 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 18:22:15,420 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 18:22:15,420 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 18:22:15,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 18:22:15,421 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 18:22:15,421 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 18:22:15,421 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 18:22:15,421 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_e093978d-0f94-4e93-acb1-b72efb373f32/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e093978d-0f94-4e93-acb1-b72efb373f32/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d2a1f90505878c0035f7701a954d17ca4375eb05 [2020-12-09 18:22:15,589 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 18:22:15,610 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 18:22:15,612 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 18:22:15,613 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 18:22:15,614 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 18:22:15,615 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e093978d-0f94-4e93-acb1-b72efb373f32/bin/utaipan/../../sv-benchmarks/c/locks/test_locks_7.c [2020-12-09 18:22:15,663 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e093978d-0f94-4e93-acb1-b72efb373f32/bin/utaipan/data/118e6b95d/b7ef35b17342447d9cc6470c1a73f766/FLAG1f89487b2 [2020-12-09 18:22:16,013 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 18:22:16,014 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e093978d-0f94-4e93-acb1-b72efb373f32/sv-benchmarks/c/locks/test_locks_7.c [2020-12-09 18:22:16,019 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e093978d-0f94-4e93-acb1-b72efb373f32/bin/utaipan/data/118e6b95d/b7ef35b17342447d9cc6470c1a73f766/FLAG1f89487b2 [2020-12-09 18:22:16,031 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e093978d-0f94-4e93-acb1-b72efb373f32/bin/utaipan/data/118e6b95d/b7ef35b17342447d9cc6470c1a73f766 [2020-12-09 18:22:16,034 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 18:22:16,035 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 18:22:16,036 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 18:22:16,037 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 18:22:16,039 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 18:22:16,039 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:22:16" (1/1) ... [2020-12-09 18:22:16,041 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d0c46d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:22:16, skipping insertion in model container [2020-12-09 18:22:16,041 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:22:16" (1/1) ... [2020-12-09 18:22:16,048 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 18:22:16,064 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 18:22:16,176 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_e093978d-0f94-4e93-acb1-b72efb373f32/sv-benchmarks/c/locks/test_locks_7.c[2881,2894] [2020-12-09 18:22:16,179 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 18:22:16,188 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 18:22:16,208 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_e093978d-0f94-4e93-acb1-b72efb373f32/sv-benchmarks/c/locks/test_locks_7.c[2881,2894] [2020-12-09 18:22:16,209 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 18:22:16,223 INFO L208 MainTranslator]: Completed translation [2020-12-09 18:22:16,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:22:16 WrapperNode [2020-12-09 18:22:16,223 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 18:22:16,224 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 18:22:16,225 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 18:22:16,225 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 18:22:16,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:22:16" (1/1) ... [2020-12-09 18:22:16,239 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:22:16" (1/1) ... [2020-12-09 18:22:16,258 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 18:22:16,258 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 18:22:16,259 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 18:22:16,259 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 18:22:16,267 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:22:16" (1/1) ... [2020-12-09 18:22:16,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:22:16" (1/1) ... [2020-12-09 18:22:16,269 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:22:16" (1/1) ... [2020-12-09 18:22:16,269 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:22:16" (1/1) ... [2020-12-09 18:22:16,273 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:22:16" (1/1) ... [2020-12-09 18:22:16,278 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:22:16" (1/1) ... [2020-12-09 18:22:16,279 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:22:16" (1/1) ... [2020-12-09 18:22:16,281 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 18:22:16,282 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 18:22:16,283 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 18:22:16,283 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 18:22:16,284 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:22:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e093978d-0f94-4e93-acb1-b72efb373f32/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 18:22:16,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 18:22:16,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 18:22:16,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 18:22:16,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 18:22:16,619 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 18:22:16,619 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2020-12-09 18:22:16,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:22:16 BoogieIcfgContainer [2020-12-09 18:22:16,621 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 18:22:16,622 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 18:22:16,622 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 18:22:16,624 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 18:22:16,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 06:22:16" (1/3) ... [2020-12-09 18:22:16,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39740fc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:22:16, skipping insertion in model container [2020-12-09 18:22:16,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:22:16" (2/3) ... [2020-12-09 18:22:16,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39740fc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:22:16, skipping insertion in model container [2020-12-09 18:22:16,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:22:16" (3/3) ... [2020-12-09 18:22:16,627 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_7.c [2020-12-09 18:22:16,637 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 18:22:16,639 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 18:22:16,647 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 18:22:16,665 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 18:22:16,665 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 18:22:16,665 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 18:22:16,665 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 18:22:16,665 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 18:22:16,665 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 18:22:16,665 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 18:22:16,666 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 18:22:16,675 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-12-09 18:22:16,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 18:22:16,679 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:22:16,679 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 18:22:16,679 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:22:16,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:22:16,683 INFO L82 PathProgramCache]: Analyzing trace with hash 787438050, now seen corresponding path program 1 times [2020-12-09 18:22:16,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:22:16,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698472982] [2020-12-09 18:22:16,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:22:16,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:22:16,823 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 18:22:16,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698472982] [2020-12-09 18:22:16,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:22:16,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 18:22:16,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935893883] [2020-12-09 18:22:16,827 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 18:22:16,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:22:16,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 18:22:16,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 18:22:16,838 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 4 states. [2020-12-09 18:22:16,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:22:16,869 INFO L93 Difference]: Finished difference Result 46 states and 73 transitions. [2020-12-09 18:22:16,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 18:22:16,870 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-09 18:22:16,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:22:16,877 INFO L225 Difference]: With dead ends: 46 [2020-12-09 18:22:16,877 INFO L226 Difference]: Without dead ends: 35 [2020-12-09 18:22:16,879 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 18:22:16,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-12-09 18:22:16,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 19. [2020-12-09 18:22:16,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-12-09 18:22:16,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 31 transitions. [2020-12-09 18:22:16,903 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 31 transitions. Word has length 6 [2020-12-09 18:22:16,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:22:16,903 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 31 transitions. [2020-12-09 18:22:16,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 18:22:16,903 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 31 transitions. [2020-12-09 18:22:16,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 18:22:16,904 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:22:16,904 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:22:16,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 18:22:16,904 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:22:16,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:22:16,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1359009906, now seen corresponding path program 1 times [2020-12-09 18:22:16,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:22:16,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590064210] [2020-12-09 18:22:16,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:22:16,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:22:16,946 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 18:22:16,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590064210] [2020-12-09 18:22:16,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:22:16,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 18:22:16,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374870347] [2020-12-09 18:22:16,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 18:22:16,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:22:16,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 18:22:16,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 18:22:16,948 INFO L87 Difference]: Start difference. First operand 19 states and 31 transitions. Second operand 4 states. [2020-12-09 18:22:16,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:22:16,964 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-12-09 18:22:16,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 18:22:16,964 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-09 18:22:16,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:22:16,965 INFO L225 Difference]: With dead ends: 35 [2020-12-09 18:22:16,965 INFO L226 Difference]: Without dead ends: 33 [2020-12-09 18:22:16,966 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 18:22:16,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-12-09 18:22:16,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 19. [2020-12-09 18:22:16,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-12-09 18:22:16,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 30 transitions. [2020-12-09 18:22:16,969 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 30 transitions. Word has length 7 [2020-12-09 18:22:16,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:22:16,969 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 30 transitions. [2020-12-09 18:22:16,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 18:22:16,969 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 30 transitions. [2020-12-09 18:22:16,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 18:22:16,969 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:22:16,969 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:22:16,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 18:22:16,970 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:22:16,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:22:16,970 INFO L82 PathProgramCache]: Analyzing trace with hash 820580535, now seen corresponding path program 1 times [2020-12-09 18:22:16,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:22:16,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616324182] [2020-12-09 18:22:16,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:22:16,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:22:17,005 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 18:22:17,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616324182] [2020-12-09 18:22:17,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:22:17,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 18:22:17,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901338198] [2020-12-09 18:22:17,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 18:22:17,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:22:17,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 18:22:17,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 18:22:17,007 INFO L87 Difference]: Start difference. First operand 19 states and 30 transitions. Second operand 4 states. [2020-12-09 18:22:17,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:22:17,021 INFO L93 Difference]: Finished difference Result 33 states and 50 transitions. [2020-12-09 18:22:17,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 18:22:17,021 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-09 18:22:17,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:22:17,022 INFO L225 Difference]: With dead ends: 33 [2020-12-09 18:22:17,022 INFO L226 Difference]: Without dead ends: 31 [2020-12-09 18:22:17,022 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 18:22:17,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-12-09 18:22:17,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 19. [2020-12-09 18:22:17,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-12-09 18:22:17,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 29 transitions. [2020-12-09 18:22:17,025 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 29 transitions. Word has length 8 [2020-12-09 18:22:17,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:22:17,025 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 29 transitions. [2020-12-09 18:22:17,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 18:22:17,025 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 29 transitions. [2020-12-09 18:22:17,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 18:22:17,026 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:22:17,026 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:22:17,026 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 18:22:17,026 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:22:17,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:22:17,026 INFO L82 PathProgramCache]: Analyzing trace with hash -331592189, now seen corresponding path program 1 times [2020-12-09 18:22:17,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:22:17,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277660719] [2020-12-09 18:22:17,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:22:17,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:22:17,066 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 18:22:17,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277660719] [2020-12-09 18:22:17,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:22:17,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 18:22:17,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099988927] [2020-12-09 18:22:17,067 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 18:22:17,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:22:17,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 18:22:17,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 18:22:17,068 INFO L87 Difference]: Start difference. First operand 19 states and 29 transitions. Second operand 4 states. [2020-12-09 18:22:17,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:22:17,083 INFO L93 Difference]: Finished difference Result 31 states and 45 transitions. [2020-12-09 18:22:17,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 18:22:17,084 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-09 18:22:17,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:22:17,085 INFO L225 Difference]: With dead ends: 31 [2020-12-09 18:22:17,085 INFO L226 Difference]: Without dead ends: 29 [2020-12-09 18:22:17,085 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 18:22:17,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-12-09 18:22:17,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 19. [2020-12-09 18:22:17,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-12-09 18:22:17,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 28 transitions. [2020-12-09 18:22:17,089 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 28 transitions. Word has length 9 [2020-12-09 18:22:17,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:22:17,089 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 28 transitions. [2020-12-09 18:22:17,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 18:22:17,089 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 28 transitions. [2020-12-09 18:22:17,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 18:22:17,090 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:22:17,090 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:22:17,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 18:22:17,091 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:22:17,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:22:17,091 INFO L82 PathProgramCache]: Analyzing trace with hash -1689207924, now seen corresponding path program 1 times [2020-12-09 18:22:17,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:22:17,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349614375] [2020-12-09 18:22:17,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:22:17,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:22:17,135 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 18:22:17,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349614375] [2020-12-09 18:22:17,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:22:17,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 18:22:17,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016477116] [2020-12-09 18:22:17,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 18:22:17,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:22:17,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 18:22:17,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 18:22:17,138 INFO L87 Difference]: Start difference. First operand 19 states and 28 transitions. Second operand 4 states. [2020-12-09 18:22:17,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:22:17,154 INFO L93 Difference]: Finished difference Result 29 states and 40 transitions. [2020-12-09 18:22:17,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 18:22:17,154 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-09 18:22:17,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:22:17,155 INFO L225 Difference]: With dead ends: 29 [2020-12-09 18:22:17,155 INFO L226 Difference]: Without dead ends: 27 [2020-12-09 18:22:17,155 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 18:22:17,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-12-09 18:22:17,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 19. [2020-12-09 18:22:17,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-12-09 18:22:17,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 27 transitions. [2020-12-09 18:22:17,159 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 27 transitions. Word has length 10 [2020-12-09 18:22:17,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:22:17,159 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 27 transitions. [2020-12-09 18:22:17,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 18:22:17,159 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 27 transitions. [2020-12-09 18:22:17,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 18:22:17,160 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:22:17,160 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:22:17,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 18:22:17,160 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:22:17,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:22:17,161 INFO L82 PathProgramCache]: Analyzing trace with hash -825622408, now seen corresponding path program 1 times [2020-12-09 18:22:17,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:22:17,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89450220] [2020-12-09 18:22:17,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:22:17,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:22:17,198 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 18:22:17,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89450220] [2020-12-09 18:22:17,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:22:17,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 18:22:17,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146015961] [2020-12-09 18:22:17,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 18:22:17,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:22:17,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 18:22:17,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 18:22:17,201 INFO L87 Difference]: Start difference. First operand 19 states and 27 transitions. Second operand 4 states. [2020-12-09 18:22:17,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:22:17,215 INFO L93 Difference]: Finished difference Result 27 states and 35 transitions. [2020-12-09 18:22:17,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 18:22:17,216 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-09 18:22:17,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:22:17,217 INFO L225 Difference]: With dead ends: 27 [2020-12-09 18:22:17,217 INFO L226 Difference]: Without dead ends: 25 [2020-12-09 18:22:17,217 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 18:22:17,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-12-09 18:22:17,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 19. [2020-12-09 18:22:17,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-12-09 18:22:17,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 26 transitions. [2020-12-09 18:22:17,219 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 26 transitions. Word has length 11 [2020-12-09 18:22:17,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:22:17,220 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 26 transitions. [2020-12-09 18:22:17,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 18:22:17,220 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 26 transitions. [2020-12-09 18:22:17,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 18:22:17,220 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:22:17,220 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:22:17,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 18:22:17,221 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:22:17,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:22:17,221 INFO L82 PathProgramCache]: Analyzing trace with hash 175725153, now seen corresponding path program 1 times [2020-12-09 18:22:17,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:22:17,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300543348] [2020-12-09 18:22:17,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:22:17,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:22:17,248 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 18:22:17,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300543348] [2020-12-09 18:22:17,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:22:17,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 18:22:17,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555192488] [2020-12-09 18:22:17,249 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 18:22:17,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:22:17,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 18:22:17,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 18:22:17,250 INFO L87 Difference]: Start difference. First operand 19 states and 26 transitions. Second operand 4 states. [2020-12-09 18:22:17,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:22:17,261 INFO L93 Difference]: Finished difference Result 21 states and 28 transitions. [2020-12-09 18:22:17,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 18:22:17,261 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-09 18:22:17,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:22:17,261 INFO L225 Difference]: With dead ends: 21 [2020-12-09 18:22:17,261 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 18:22:17,262 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 18:22:17,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 18:22:17,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 18:22:17,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 18:22:17,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 18:22:17,262 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-12-09 18:22:17,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:22:17,262 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 18:22:17,262 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 18:22:17,262 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 18:22:17,262 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 18:22:17,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 18:22:17,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 18:22:17,273 INFO L262 CegarLoopResult]: For program point L93-1(lines 32 118) no Hoare annotation was computed. [2020-12-09 18:22:17,273 INFO L262 CegarLoopResult]: For program point L77-1(lines 32 118) no Hoare annotation was computed. [2020-12-09 18:22:17,273 INFO L262 CegarLoopResult]: For program point L94(line 94) no Hoare annotation was computed. [2020-12-09 18:22:17,273 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 18:22:17,273 INFO L265 CegarLoopResult]: At program point L119(lines 7 123) the Hoare annotation is: true [2020-12-09 18:22:17,274 INFO L262 CegarLoopResult]: For program point L103-1(lines 32 118) no Hoare annotation was computed. [2020-12-09 18:22:17,274 INFO L262 CegarLoopResult]: For program point L104(line 104) no Hoare annotation was computed. [2020-12-09 18:22:17,274 INFO L262 CegarLoopResult]: For program point L88-1(lines 32 118) no Hoare annotation was computed. [2020-12-09 18:22:17,274 INFO L265 CegarLoopResult]: At program point L113-1(lines 32 118) the Hoare annotation is: true [2020-12-09 18:22:17,274 INFO L265 CegarLoopResult]: At program point L122(lines 6 123) the Hoare annotation is: true [2020-12-09 18:22:17,274 INFO L262 CegarLoopResult]: For program point L89(line 89) no Hoare annotation was computed. [2020-12-09 18:22:17,274 INFO L262 CegarLoopResult]: For program point L114(line 114) no Hoare annotation was computed. [2020-12-09 18:22:17,274 INFO L258 CegarLoopResult]: At program point L114-1(lines 7 123) the Hoare annotation is: false [2020-12-09 18:22:17,274 INFO L262 CegarLoopResult]: For program point L98-1(lines 32 118) no Hoare annotation was computed. [2020-12-09 18:22:17,274 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 121) no Hoare annotation was computed. [2020-12-09 18:22:17,274 INFO L262 CegarLoopResult]: For program point L99(line 99) no Hoare annotation was computed. [2020-12-09 18:22:17,274 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 18:22:17,274 INFO L262 CegarLoopResult]: For program point L83-1(lines 32 118) no Hoare annotation was computed. [2020-12-09 18:22:17,274 INFO L262 CegarLoopResult]: For program point L108-1(lines 32 118) no Hoare annotation was computed. [2020-12-09 18:22:17,274 INFO L262 CegarLoopResult]: For program point L34(lines 34 36) no Hoare annotation was computed. [2020-12-09 18:22:17,274 INFO L262 CegarLoopResult]: For program point L84(line 84) no Hoare annotation was computed. [2020-12-09 18:22:17,275 INFO L262 CegarLoopResult]: For program point L109(line 109) no Hoare annotation was computed. [2020-12-09 18:22:17,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 06:22:17 BoogieIcfgContainer [2020-12-09 18:22:17,281 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 18:22:17,282 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 18:22:17,282 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 18:22:17,282 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 18:22:17,282 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:22:16" (3/4) ... [2020-12-09 18:22:17,284 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 18:22:17,292 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-12-09 18:22:17,292 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-12-09 18:22:17,292 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-09 18:22:17,293 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 18:22:17,328 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e093978d-0f94-4e93-acb1-b72efb373f32/bin/utaipan/witness.graphml [2020-12-09 18:22:17,328 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 18:22:17,330 INFO L168 Benchmark]: Toolchain (without parser) took 1293.84 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 67.9 MB in the beginning and 63.5 MB in the end (delta: 4.4 MB). Peak memory consumption was 27.5 MB. Max. memory is 16.1 GB. [2020-12-09 18:22:17,330 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 96.5 MB. Free memory is still 74.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 18:22:17,330 INFO L168 Benchmark]: CACSL2BoogieTranslator took 187.28 ms. Allocated memory is still 96.5 MB. Free memory was 67.7 MB in the beginning and 57.7 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 18:22:17,331 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.47 ms. Allocated memory is still 96.5 MB. Free memory was 57.6 MB in the beginning and 56.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 18:22:17,331 INFO L168 Benchmark]: Boogie Preprocessor took 23.05 ms. Allocated memory is still 96.5 MB. Free memory was 56.1 MB in the beginning and 54.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 18:22:17,331 INFO L168 Benchmark]: RCFGBuilder took 338.62 ms. Allocated memory is still 96.5 MB. Free memory was 54.8 MB in the beginning and 48.9 MB in the end (delta: 5.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-09 18:22:17,332 INFO L168 Benchmark]: TraceAbstraction took 659.51 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 48.5 MB in the beginning and 66.4 MB in the end (delta: -17.9 MB). Peak memory consumption was 2.3 MB. Max. memory is 16.1 GB. [2020-12-09 18:22:17,332 INFO L168 Benchmark]: Witness Printer took 46.48 ms. Allocated memory is still 117.4 MB. Free memory was 66.4 MB in the beginning and 63.5 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 18:22:17,334 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 96.5 MB. Free memory is still 74.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 187.28 ms. Allocated memory is still 96.5 MB. Free memory was 67.7 MB in the beginning and 57.7 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.47 ms. Allocated memory is still 96.5 MB. Free memory was 57.6 MB in the beginning and 56.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.05 ms. Allocated memory is still 96.5 MB. Free memory was 56.1 MB in the beginning and 54.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 338.62 ms. Allocated memory is still 96.5 MB. Free memory was 54.8 MB in the beginning and 48.9 MB in the end (delta: 5.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 659.51 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 48.5 MB in the beginning and 66.4 MB in the end (delta: -17.9 MB). Peak memory consumption was 2.3 MB. Max. memory is 16.1 GB. * Witness Printer took 46.48 ms. Allocated memory is still 117.4 MB. Free memory was 66.4 MB in the beginning and 63.5 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 121]: 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 - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.6s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 187 SDtfs, 156 SDslu, 263 SDs, 0 SdLazy, 63 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred 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, 7 MinimizatonAttempts, 66 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 9 NumberOfFragments, 4 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 63 NumberOfCodeBlocks, 63 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 56 ConstructedInterpolants, 0 QuantifiedInterpolants, 2100 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...