./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe037_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_5537d26d-af2a-4734-b180-f5a7edf01205/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_5537d26d-af2a-4734-b180-f5a7edf01205/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5537d26d-af2a-4734-b180-f5a7edf01205/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5537d26d-af2a-4734-b180-f5a7edf01205/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe037_tso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_5537d26d-af2a-4734-b180-f5a7edf01205/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5537d26d-af2a-4734-b180-f5a7edf01205/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 9a2f9c70bd175dc49b8dedfde4852ca3078a8831 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 13:04:36,268 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:04:36,271 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:04:36,340 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:04:36,341 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:04:36,342 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:04:36,344 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:04:36,347 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:04:36,349 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:04:36,350 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:04:36,351 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:04:36,353 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:04:36,353 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:04:36,355 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:04:36,356 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:04:36,358 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:04:36,359 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:04:36,359 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:04:36,362 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:04:36,364 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:04:36,366 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:04:36,368 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:04:36,369 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:04:36,370 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:04:36,374 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:04:36,375 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:04:36,375 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:04:36,376 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:04:36,377 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:04:36,378 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:04:36,378 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:04:36,379 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:04:36,380 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:04:36,381 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:04:36,382 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:04:36,383 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:04:36,384 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:04:36,384 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:04:36,384 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:04:36,385 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:04:36,386 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:04:36,387 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5537d26d-af2a-4734-b180-f5a7edf01205/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 13:04:36,431 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:04:36,431 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:04:36,433 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:04:36,433 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:04:36,433 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:04:36,433 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:04:36,433 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:04:36,434 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:04:36,434 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:04:36,434 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:04:36,435 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:04:36,435 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:04:36,436 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:04:36,436 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:04:36,436 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:04:36,437 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:04:36,437 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:04:36,437 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:04:36,437 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:04:36,438 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:04:36,438 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:04:36,438 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:04:36,438 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:04:36,438 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:04:36,439 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:04:36,439 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:04:36,439 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:04:36,439 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:04:36,439 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:04:36,441 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:04:36,441 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:04:36,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:04:36,442 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:04:36,442 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:04:36,442 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:04:36,442 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:04:36,443 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:04:36,443 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:04:36,443 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:04:36,443 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:04:36,443 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_5537d26d-af2a-4734-b180-f5a7edf01205/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_5537d26d-af2a-4734-b180-f5a7edf01205/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a2f9c70bd175dc49b8dedfde4852ca3078a8831 [2020-11-22 13:04:36,707 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:04:36,738 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:04:36,741 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:04:36,742 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:04:36,743 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:04:36,743 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5537d26d-af2a-4734-b180-f5a7edf01205/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/safe037_tso.opt.i [2020-11-22 13:04:36,813 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5537d26d-af2a-4734-b180-f5a7edf01205/bin/utaipan/data/f7261a701/62957ae0448643e28cfd0f4770eb887e/FLAG85ad5598c [2020-11-22 13:04:37,305 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:04:37,306 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5537d26d-af2a-4734-b180-f5a7edf01205/sv-benchmarks/c/pthread-wmm/safe037_tso.opt.i [2020-11-22 13:04:37,320 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5537d26d-af2a-4734-b180-f5a7edf01205/bin/utaipan/data/f7261a701/62957ae0448643e28cfd0f4770eb887e/FLAG85ad5598c [2020-11-22 13:04:37,624 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5537d26d-af2a-4734-b180-f5a7edf01205/bin/utaipan/data/f7261a701/62957ae0448643e28cfd0f4770eb887e [2020-11-22 13:04:37,626 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:04:37,628 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:04:37,629 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:04:37,630 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:04:37,633 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:04:37,633 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:04:37" (1/1) ... [2020-11-22 13:04:37,636 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60d83753 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:37, skipping insertion in model container [2020-11-22 13:04:37,636 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:04:37" (1/1) ... [2020-11-22 13:04:37,643 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:04:37,681 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:04:38,031 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:04:38,044 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:04:38,117 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:04:38,213 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:04:38,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:38 WrapperNode [2020-11-22 13:04:38,215 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:04:38,216 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:04:38,217 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:04:38,217 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:04:38,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:38" (1/1) ... [2020-11-22 13:04:38,259 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:38" (1/1) ... [2020-11-22 13:04:38,286 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:04:38,287 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:04:38,287 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:04:38,287 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:04:38,295 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:38" (1/1) ... [2020-11-22 13:04:38,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:38" (1/1) ... [2020-11-22 13:04:38,309 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:38" (1/1) ... [2020-11-22 13:04:38,310 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:38" (1/1) ... [2020-11-22 13:04:38,321 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:38" (1/1) ... [2020-11-22 13:04:38,328 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:38" (1/1) ... [2020-11-22 13:04:38,331 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:38" (1/1) ... [2020-11-22 13:04:38,338 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:04:38,346 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:04:38,347 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:04:38,347 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:04:38,348 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5537d26d-af2a-4734-b180-f5a7edf01205/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 [2020-11-22 13:04:38,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-22 13:04:38,429 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-22 13:04:38,430 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:04:38,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-22 13:04:38,430 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-22 13:04:38,430 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-22 13:04:38,430 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-22 13:04:38,431 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-22 13:04:38,432 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-22 13:04:38,432 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-22 13:04:38,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 13:04:38,433 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-22 13:04:38,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:04:38,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:04:38,435 WARN L208 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-22 13:04:38,864 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:04:38,864 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-22 13:04:38,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:04:38 BoogieIcfgContainer [2020-11-22 13:04:38,866 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:04:38,868 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:04:38,868 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:04:38,871 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:04:38,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:04:37" (1/3) ... [2020-11-22 13:04:38,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@463ed70a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:04:38, skipping insertion in model container [2020-11-22 13:04:38,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:38" (2/3) ... [2020-11-22 13:04:38,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@463ed70a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:04:38, skipping insertion in model container [2020-11-22 13:04:38,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:04:38" (3/3) ... [2020-11-22 13:04:38,874 INFO L111 eAbstractionObserver]: Analyzing ICFG safe037_tso.opt.i [2020-11-22 13:04:38,884 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-22 13:04:38,884 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:04:38,889 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 13:04:38,889 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-22 13:04:38,915 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 13:04:38,915 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 13:04:38,916 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 13:04:38,916 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 13:04:38,916 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 13:04:38,916 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 13:04:38,917 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 13:04:38,917 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 13:04:38,917 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 13:04:38,918 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 13:04:38,918 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 13:04:38,918 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 13:04:38,919 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 13:04:38,919 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 13:04:38,919 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 13:04:38,919 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 13:04:38,920 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 13:04:38,920 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 13:04:38,922 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 13:04:38,922 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 13:04:38,923 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 13:04:38,923 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 13:04:38,931 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 13:04:38,931 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 13:04:38,931 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 13:04:38,931 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 13:04:38,933 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 13:04:38,934 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 13:04:38,934 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 13:04:38,934 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 13:04:38,939 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-22 13:04:38,950 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-22 13:04:38,969 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:04:38,970 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:04:38,970 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:04:38,970 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:04:38,970 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:04:38,970 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:04:38,970 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:04:38,970 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:04:38,981 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-22 13:04:38,983 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 87 places, 80 transitions, 175 flow [2020-11-22 13:04:38,985 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 87 places, 80 transitions, 175 flow [2020-11-22 13:04:38,987 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 87 places, 80 transitions, 175 flow [2020-11-22 13:04:39,027 INFO L129 PetriNetUnfolder]: 3/77 cut-off events. [2020-11-22 13:04:39,028 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-22 13:04:39,031 INFO L80 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 77 events. 3/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 61 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-22 13:04:39,034 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-22 13:04:40,484 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-11-22 13:04:41,459 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-11-22 13:04:41,584 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-11-22 13:04:41,740 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2020-11-22 13:04:41,804 INFO L131 LiptonReduction]: Checked pairs total: 2901 [2020-11-22 13:04:41,804 INFO L133 LiptonReduction]: Total number of compositions: 75 [2020-11-22 13:04:41,808 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-11-22 13:04:41,831 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-11-22 13:04:41,833 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-11-22 13:04:41,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-22 13:04:41,839 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:04:41,840 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:04:41,840 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:04:41,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:04:41,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1054042143, now seen corresponding path program 1 times [2020-11-22 13:04:41,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:04:41,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078473979] [2020-11-22 13:04:41,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:04:41,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:04:42,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:04:42,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078473979] [2020-11-22 13:04:42,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:04:42,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:04:42,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385028104] [2020-11-22 13:04:42,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:04:42,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:04:42,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:04:42,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:04:42,088 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 4 states. [2020-11-22 13:04:42,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:04:42,161 INFO L93 Difference]: Finished difference Result 281 states and 711 transitions. [2020-11-22 13:04:42,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:04:42,163 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-22 13:04:42,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:04:42,175 INFO L225 Difference]: With dead ends: 281 [2020-11-22 13:04:42,175 INFO L226 Difference]: Without dead ends: 180 [2020-11-22 13:04:42,176 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 [2020-11-22 13:04:42,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-11-22 13:04:42,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2020-11-22 13:04:42,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-11-22 13:04:42,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 440 transitions. [2020-11-22 13:04:42,231 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 440 transitions. Word has length 8 [2020-11-22 13:04:42,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:04:42,231 INFO L481 AbstractCegarLoop]: Abstraction has 180 states and 440 transitions. [2020-11-22 13:04:42,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:04:42,232 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 440 transitions. [2020-11-22 13:04:42,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-22 13:04:42,234 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:04:42,234 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:04:42,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 13:04:42,235 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:04:42,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:04:42,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1550829140, now seen corresponding path program 1 times [2020-11-22 13:04:42,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:04:42,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320578411] [2020-11-22 13:04:42,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:04:42,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:04:42,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:04:42,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320578411] [2020-11-22 13:04:42,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:04:42,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 13:04:42,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387608899] [2020-11-22 13:04:42,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 13:04:42,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:04:42,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 13:04:42,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-22 13:04:42,330 INFO L87 Difference]: Start difference. First operand 180 states and 440 transitions. Second operand 5 states. [2020-11-22 13:04:42,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:04:42,379 INFO L93 Difference]: Finished difference Result 163 states and 368 transitions. [2020-11-22 13:04:42,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 13:04:42,380 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-22 13:04:42,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:04:42,381 INFO L225 Difference]: With dead ends: 163 [2020-11-22 13:04:42,382 INFO L226 Difference]: Without dead ends: 126 [2020-11-22 13:04:42,382 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 [2020-11-22 13:04:42,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-11-22 13:04:42,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2020-11-22 13:04:42,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-11-22 13:04:42,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 278 transitions. [2020-11-22 13:04:42,395 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 278 transitions. Word has length 11 [2020-11-22 13:04:42,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:04:42,396 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 278 transitions. [2020-11-22 13:04:42,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 13:04:42,396 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 278 transitions. [2020-11-22 13:04:42,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-22 13:04:42,398 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:04:42,398 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:04:42,398 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 13:04:42,399 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:04:42,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:04:42,399 INFO L82 PathProgramCache]: Analyzing trace with hash -1926964344, now seen corresponding path program 1 times [2020-11-22 13:04:42,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:04:42,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059710776] [2020-11-22 13:04:42,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:04:42,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:04:42,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:04:42,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059710776] [2020-11-22 13:04:42,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:04:42,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 13:04:42,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035895074] [2020-11-22 13:04:42,536 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-22 13:04:42,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:04:42,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-22 13:04:42,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-22 13:04:42,537 INFO L87 Difference]: Start difference. First operand 126 states and 278 transitions. Second operand 6 states. [2020-11-22 13:04:42,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:04:42,613 INFO L93 Difference]: Finished difference Result 118 states and 260 transitions. [2020-11-22 13:04:42,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 13:04:42,614 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-11-22 13:04:42,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:04:42,615 INFO L225 Difference]: With dead ends: 118 [2020-11-22 13:04:42,615 INFO L226 Difference]: Without dead ends: 108 [2020-11-22 13:04:42,616 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-11-22 13:04:42,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-11-22 13:04:42,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-11-22 13:04:42,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-11-22 13:04:42,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 242 transitions. [2020-11-22 13:04:42,626 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 242 transitions. Word has length 14 [2020-11-22 13:04:42,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:04:42,626 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 242 transitions. [2020-11-22 13:04:42,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-22 13:04:42,626 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 242 transitions. [2020-11-22 13:04:42,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-22 13:04:42,628 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:04:42,628 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:04:42,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-22 13:04:42,634 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:04:42,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:04:42,635 INFO L82 PathProgramCache]: Analyzing trace with hash 337836795, now seen corresponding path program 1 times [2020-11-22 13:04:42,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:04:42,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121746627] [2020-11-22 13:04:42,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:04:42,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:04:42,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:04:42,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121746627] [2020-11-22 13:04:42,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:04:42,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 13:04:42,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639603033] [2020-11-22 13:04:42,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:04:42,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:04:42,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:04:42,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:04:42,755 INFO L87 Difference]: Start difference. First operand 108 states and 242 transitions. Second operand 4 states. [2020-11-22 13:04:42,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:04:42,784 INFO L93 Difference]: Finished difference Result 133 states and 289 transitions. [2020-11-22 13:04:42,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:04:42,785 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-22 13:04:42,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:04:42,786 INFO L225 Difference]: With dead ends: 133 [2020-11-22 13:04:42,786 INFO L226 Difference]: Without dead ends: 54 [2020-11-22 13:04:42,786 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-22 13:04:42,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-11-22 13:04:42,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-11-22 13:04:42,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-22 13:04:42,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 98 transitions. [2020-11-22 13:04:42,789 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 98 transitions. Word has length 17 [2020-11-22 13:04:42,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:04:42,789 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 98 transitions. [2020-11-22 13:04:42,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:04:42,789 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 98 transitions. [2020-11-22 13:04:42,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-22 13:04:42,790 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:04:42,790 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:04:42,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-22 13:04:42,791 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:04:42,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:04:42,792 INFO L82 PathProgramCache]: Analyzing trace with hash 64468355, now seen corresponding path program 2 times [2020-11-22 13:04:42,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:04:42,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968916003] [2020-11-22 13:04:42,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:04:42,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:04:42,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:04:42,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968916003] [2020-11-22 13:04:42,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:04:42,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 13:04:42,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372396154] [2020-11-22 13:04:42,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:04:42,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:04:42,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:04:42,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:04:42,858 INFO L87 Difference]: Start difference. First operand 54 states and 98 transitions. Second operand 4 states. [2020-11-22 13:04:42,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:04:42,886 INFO L93 Difference]: Finished difference Result 67 states and 119 transitions. [2020-11-22 13:04:42,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:04:42,886 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-22 13:04:42,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:04:42,887 INFO L225 Difference]: With dead ends: 67 [2020-11-22 13:04:42,887 INFO L226 Difference]: Without dead ends: 30 [2020-11-22 13:04:42,887 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-22 13:04:42,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-11-22 13:04:42,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-11-22 13:04:42,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-22 13:04:42,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 44 transitions. [2020-11-22 13:04:42,890 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 44 transitions. Word has length 17 [2020-11-22 13:04:42,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:04:42,890 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 44 transitions. [2020-11-22 13:04:42,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:04:42,891 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 44 transitions. [2020-11-22 13:04:42,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-22 13:04:42,891 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:04:42,891 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:04:42,892 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-22 13:04:42,892 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:04:42,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:04:42,892 INFO L82 PathProgramCache]: Analyzing trace with hash -339277395, now seen corresponding path program 3 times [2020-11-22 13:04:42,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:04:42,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684603679] [2020-11-22 13:04:42,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:04:42,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:04:42,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:04:42,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684603679] [2020-11-22 13:04:42,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:04:42,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 13:04:42,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856150037] [2020-11-22 13:04:42,936 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:04:42,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:04:42,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:04:42,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:04:42,937 INFO L87 Difference]: Start difference. First operand 30 states and 44 transitions. Second operand 4 states. [2020-11-22 13:04:42,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:04:42,949 INFO L93 Difference]: Finished difference Result 29 states and 43 transitions. [2020-11-22 13:04:42,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:04:42,950 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-22 13:04:42,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:04:42,950 INFO L225 Difference]: With dead ends: 29 [2020-11-22 13:04:42,950 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 13:04:42,951 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-22 13:04:42,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 13:04:42,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 13:04:42,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 13:04:42,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 13:04:42,951 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-11-22 13:04:42,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:04:42,951 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 13:04:42,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:04:42,952 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 13:04:42,952 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 13:04:42,952 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-22 13:04:42,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:04:42 BasicIcfg [2020-11-22 13:04:42,955 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:04:42,955 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:04:42,955 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:04:42,955 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:04:42,956 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:04:38" (3/4) ... [2020-11-22 13:04:42,959 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 13:04:42,965 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-11-22 13:04:42,965 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-11-22 13:04:42,965 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-11-22 13:04:42,970 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-11-22 13:04:42,970 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-22 13:04:42,970 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 13:04:42,971 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 13:04:43,009 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_5537d26d-af2a-4734-b180-f5a7edf01205/bin/utaipan/witness.graphml [2020-11-22 13:04:43,010 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:04:43,011 INFO L168 Benchmark]: Toolchain (without parser) took 5382.76 ms. Allocated memory was 107.0 MB in the beginning and 157.3 MB in the end (delta: 50.3 MB). Free memory was 77.5 MB in the beginning and 101.5 MB in the end (delta: -24.0 MB). Peak memory consumption was 25.8 MB. Max. memory is 16.1 GB. [2020-11-22 13:04:43,013 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 107.0 MB. Free memory is still 64.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:04:43,014 INFO L168 Benchmark]: CACSL2BoogieTranslator took 585.89 ms. Allocated memory is still 107.0 MB. Free memory was 77.5 MB in the beginning and 62.7 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-22 13:04:43,015 INFO L168 Benchmark]: Boogie Procedure Inliner took 69.35 ms. Allocated memory is still 107.0 MB. Free memory was 62.7 MB in the beginning and 60.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:04:43,015 INFO L168 Benchmark]: Boogie Preprocessor took 59.06 ms. Allocated memory is still 107.0 MB. Free memory was 60.7 MB in the beginning and 59.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:04:43,018 INFO L168 Benchmark]: RCFGBuilder took 519.99 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 59.5 MB in the beginning and 94.3 MB in the end (delta: -34.8 MB). Peak memory consumption was 14.4 MB. Max. memory is 16.1 GB. [2020-11-22 13:04:43,018 INFO L168 Benchmark]: TraceAbstraction took 4086.78 ms. Allocated memory was 130.0 MB in the beginning and 157.3 MB in the end (delta: 27.3 MB). Free memory was 93.7 MB in the beginning and 104.7 MB in the end (delta: -11.0 MB). Peak memory consumption was 16.5 MB. Max. memory is 16.1 GB. [2020-11-22 13:04:43,019 INFO L168 Benchmark]: Witness Printer took 54.51 ms. Allocated memory is still 157.3 MB. Free memory was 104.7 MB in the beginning and 101.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:04:43,021 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 107.0 MB. Free memory is still 64.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 585.89 ms. Allocated memory is still 107.0 MB. Free memory was 77.5 MB in the beginning and 62.7 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 69.35 ms. Allocated memory is still 107.0 MB. Free memory was 62.7 MB in the beginning and 60.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 59.06 ms. Allocated memory is still 107.0 MB. Free memory was 60.7 MB in the beginning and 59.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 519.99 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 59.5 MB in the beginning and 94.3 MB in the end (delta: -34.8 MB). Peak memory consumption was 14.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4086.78 ms. Allocated memory was 130.0 MB in the beginning and 157.3 MB in the end (delta: 27.3 MB). Free memory was 93.7 MB in the beginning and 104.7 MB in the end (delta: -11.0 MB). Peak memory consumption was 16.5 MB. Max. memory is 16.1 GB. * Witness Printer took 54.51 ms. Allocated memory is still 157.3 MB. Free memory was 104.7 MB in the beginning and 101.5 MB in the end (delta: 3.1 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 950 VarBasedMoverChecksPositive, 36 VarBasedMoverChecksNegative, 2 SemBasedMoverChecksPositive, 34 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 71 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.8s, 87 PlacesBefore, 31 PlacesAfterwards, 80 TransitionsBefore, 21 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 19 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 3 ChoiceCompositions, 75 TotalNumberOfCompositions, 2901 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 78 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.9s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.8s, HoareTripleCheckerStatistics: 115 SDtfs, 168 SDslu, 151 SDs, 0 SdLazy, 57 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 2874 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...