./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/locks/test_locks_9.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_358014a5-8d90-44d7-b51d-fcfd9028606f/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_358014a5-8d90-44d7-b51d-fcfd9028606f/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_358014a5-8d90-44d7-b51d-fcfd9028606f/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_358014a5-8d90-44d7-b51d-fcfd9028606f/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/locks/test_locks_9.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_358014a5-8d90-44d7-b51d-fcfd9028606f/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_358014a5-8d90-44d7-b51d-fcfd9028606f/bin/utaipan-mTDlp9Zugs --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 20a70402cc893fb2c7adec21ca8a267adc3c5cbb ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 03:09:24,279 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 03:09:24,281 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 03:09:24,333 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 03:09:24,334 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 03:09:24,338 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 03:09:24,345 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 03:09:24,349 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 03:09:24,352 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 03:09:24,359 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 03:09:24,360 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 03:09:24,362 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 03:09:24,363 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 03:09:24,366 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 03:09:24,369 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 03:09:24,374 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 03:09:24,376 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 03:09:24,377 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 03:09:24,380 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 03:09:24,396 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 03:09:24,398 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 03:09:24,399 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 03:09:24,403 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 03:09:24,404 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 03:09:24,414 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 03:09:24,414 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 03:09:24,414 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 03:09:24,416 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 03:09:24,417 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 03:09:24,419 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 03:09:24,419 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 03:09:24,420 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 03:09:24,422 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 03:09:24,423 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 03:09:24,425 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 03:09:24,425 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 03:09:24,426 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 03:09:24,426 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 03:09:24,427 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 03:09:24,437 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 03:09:24,438 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 03:09:24,439 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_358014a5-8d90-44d7-b51d-fcfd9028606f/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 03:09:24,465 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 03:09:24,466 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 03:09:24,466 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 03:09:24,467 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 03:09:24,467 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 03:09:24,467 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 03:09:24,468 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 03:09:24,468 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 03:09:24,468 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 03:09:24,468 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 03:09:24,469 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 03:09:24,469 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 03:09:24,469 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 03:09:24,469 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 03:09:24,470 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 03:09:24,470 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 03:09:24,471 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 03:09:24,471 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 03:09:24,471 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 03:09:24,471 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 03:09:24,472 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 03:09:24,472 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 03:09:24,472 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 03:09:24,472 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 03:09:24,472 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 03:09:24,473 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 03:09:24,473 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 03:09:24,473 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 03:09:24,473 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 03:09:24,474 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 03:09:24,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:09:24,474 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 03:09:24,474 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 03:09:24,475 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 03:09:24,475 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 03:09:24,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 03:09:24,475 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 03:09:24,476 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 03:09:24,476 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 03:09:24,476 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_358014a5-8d90-44d7-b51d-fcfd9028606f/bin/utaipan-mTDlp9Zugs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_358014a5-8d90-44d7-b51d-fcfd9028606f/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 20a70402cc893fb2c7adec21ca8a267adc3c5cbb [2021-10-16 03:09:24,711 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 03:09:24,732 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 03:09:24,734 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 03:09:24,735 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 03:09:24,736 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 03:09:24,737 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_358014a5-8d90-44d7-b51d-fcfd9028606f/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/locks/test_locks_9.c [2021-10-16 03:09:24,798 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_358014a5-8d90-44d7-b51d-fcfd9028606f/bin/utaipan-mTDlp9Zugs/data/ee3ecab9f/5777785a881b4a4182fed161be86909e/FLAGdb96239c8 [2021-10-16 03:09:25,247 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 03:09:25,247 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_358014a5-8d90-44d7-b51d-fcfd9028606f/sv-benchmarks/c/locks/test_locks_9.c [2021-10-16 03:09:25,255 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_358014a5-8d90-44d7-b51d-fcfd9028606f/bin/utaipan-mTDlp9Zugs/data/ee3ecab9f/5777785a881b4a4182fed161be86909e/FLAGdb96239c8 [2021-10-16 03:09:25,620 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_358014a5-8d90-44d7-b51d-fcfd9028606f/bin/utaipan-mTDlp9Zugs/data/ee3ecab9f/5777785a881b4a4182fed161be86909e [2021-10-16 03:09:25,622 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 03:09:25,624 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 03:09:25,629 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 03:09:25,629 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 03:09:25,633 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 03:09:25,634 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:09:25" (1/1) ... [2021-10-16 03:09:25,637 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6999667 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:09:25, skipping insertion in model container [2021-10-16 03:09:25,638 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:09:25" (1/1) ... [2021-10-16 03:09:25,645 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 03:09:25,663 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 03:09:25,818 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_358014a5-8d90-44d7-b51d-fcfd9028606f/sv-benchmarks/c/locks/test_locks_9.c[3555,3568] [2021-10-16 03:09:25,822 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:09:25,832 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 03:09:25,855 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_358014a5-8d90-44d7-b51d-fcfd9028606f/sv-benchmarks/c/locks/test_locks_9.c[3555,3568] [2021-10-16 03:09:25,856 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:09:25,870 INFO L208 MainTranslator]: Completed translation [2021-10-16 03:09:25,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:09:25 WrapperNode [2021-10-16 03:09:25,871 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 03:09:25,873 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 03:09:25,873 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 03:09:25,873 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 03:09:25,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:09:25" (1/1) ... [2021-10-16 03:09:25,889 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:09:25" (1/1) ... [2021-10-16 03:09:25,914 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 03:09:25,915 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 03:09:25,915 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 03:09:25,915 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 03:09:25,924 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:09:25" (1/1) ... [2021-10-16 03:09:25,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:09:25" (1/1) ... [2021-10-16 03:09:25,927 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:09:25" (1/1) ... [2021-10-16 03:09:25,928 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:09:25" (1/1) ... [2021-10-16 03:09:25,934 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:09:25" (1/1) ... [2021-10-16 03:09:25,940 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:09:25" (1/1) ... [2021-10-16 03:09:25,942 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:09:25" (1/1) ... [2021-10-16 03:09:25,945 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 03:09:25,946 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 03:09:25,946 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 03:09:25,946 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 03:09:25,947 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:09:25" (1/1) ... [2021-10-16 03:09:25,956 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:09:25,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_358014a5-8d90-44d7-b51d-fcfd9028606f/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:09:25,984 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_358014a5-8d90-44d7-b51d-fcfd9028606f/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 03:09:26,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_358014a5-8d90-44d7-b51d-fcfd9028606f/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 03:09:26,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 03:09:26,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 03:09:26,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 03:09:26,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 03:09:26,600 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 03:09:26,601 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-16 03:09:26,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:09:26 BoogieIcfgContainer [2021-10-16 03:09:26,607 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 03:09:26,629 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 03:09:26,629 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 03:09:26,641 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 03:09:26,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 03:09:25" (1/3) ... [2021-10-16 03:09:26,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5abcc2f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:09:26, skipping insertion in model container [2021-10-16 03:09:26,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:09:25" (2/3) ... [2021-10-16 03:09:26,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5abcc2f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:09:26, skipping insertion in model container [2021-10-16 03:09:26,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:09:26" (3/3) ... [2021-10-16 03:09:26,644 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_9.c [2021-10-16 03:09:26,650 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 03:09:26,650 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 03:09:26,705 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 03:09:26,711 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 03:09:26,712 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 03:09:26,731 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 24 states have (on average 1.875) internal successors, (45), 25 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:26,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-16 03:09:26,736 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:09:26,736 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-16 03:09:26,737 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:09:26,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:09:26,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1761973180, now seen corresponding path program 1 times [2021-10-16 03:09:26,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:09:26,751 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357174969] [2021-10-16 03:09:26,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:09:26,753 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:09:26,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:09:26,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:09:26,974 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:09:26,974 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357174969] [2021-10-16 03:09:26,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357174969] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:09:26,975 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:09:26,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 03:09:26,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278961175] [2021-10-16 03:09:26,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 03:09:26,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:09:26,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 03:09:26,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:09:27,002 INFO L87 Difference]: Start difference. First operand has 26 states, 24 states have (on average 1.875) internal successors, (45), 25 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:27,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:09:27,091 INFO L93 Difference]: Finished difference Result 54 states and 89 transitions. [2021-10-16 03:09:27,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 03:09:27,093 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-16 03:09:27,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:09:27,106 INFO L225 Difference]: With dead ends: 54 [2021-10-16 03:09:27,106 INFO L226 Difference]: Without dead ends: 43 [2021-10-16 03:09:27,109 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:09:27,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-16 03:09:27,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 23. [2021-10-16 03:09:27,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 22 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:27,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 39 transitions. [2021-10-16 03:09:27,146 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 39 transitions. Word has length 6 [2021-10-16 03:09:27,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:09:27,147 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 39 transitions. [2021-10-16 03:09:27,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:27,147 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 39 transitions. [2021-10-16 03:09:27,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-16 03:09:27,148 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:09:27,148 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:09:27,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 03:09:27,149 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:09:27,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:09:27,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1213192596, now seen corresponding path program 1 times [2021-10-16 03:09:27,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:09:27,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55722602] [2021-10-16 03:09:27,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:09:27,151 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:09:27,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:09:27,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:09:27,249 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:09:27,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55722602] [2021-10-16 03:09:27,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55722602] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:09:27,251 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:09:27,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 03:09:27,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126388321] [2021-10-16 03:09:27,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 03:09:27,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:09:27,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 03:09:27,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:09:27,256 INFO L87 Difference]: Start difference. First operand 23 states and 39 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:27,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:09:27,290 INFO L93 Difference]: Finished difference Result 43 states and 71 transitions. [2021-10-16 03:09:27,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 03:09:27,292 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-16 03:09:27,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:09:27,294 INFO L225 Difference]: With dead ends: 43 [2021-10-16 03:09:27,296 INFO L226 Difference]: Without dead ends: 41 [2021-10-16 03:09:27,297 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:09:27,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-10-16 03:09:27,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 23. [2021-10-16 03:09:27,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:27,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 38 transitions. [2021-10-16 03:09:27,306 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 38 transitions. Word has length 7 [2021-10-16 03:09:27,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:09:27,307 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 38 transitions. [2021-10-16 03:09:27,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:27,307 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 38 transitions. [2021-10-16 03:09:27,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-16 03:09:27,308 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:09:27,309 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:09:27,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 03:09:27,309 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:09:27,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:09:27,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1045949201, now seen corresponding path program 1 times [2021-10-16 03:09:27,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:09:27,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226429538] [2021-10-16 03:09:27,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:09:27,317 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:09:27,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:09:27,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:09:27,407 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:09:27,407 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226429538] [2021-10-16 03:09:27,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226429538] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:09:27,408 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:09:27,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 03:09:27,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420890582] [2021-10-16 03:09:27,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 03:09:27,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:09:27,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 03:09:27,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:09:27,410 INFO L87 Difference]: Start difference. First operand 23 states and 38 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:27,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:09:27,439 INFO L93 Difference]: Finished difference Result 41 states and 66 transitions. [2021-10-16 03:09:27,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 03:09:27,440 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-16 03:09:27,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:09:27,441 INFO L225 Difference]: With dead ends: 41 [2021-10-16 03:09:27,441 INFO L226 Difference]: Without dead ends: 39 [2021-10-16 03:09:27,442 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:09:27,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-16 03:09:27,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 23. [2021-10-16 03:09:27,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 22 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:27,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 37 transitions. [2021-10-16 03:09:27,446 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 37 transitions. Word has length 8 [2021-10-16 03:09:27,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:09:27,447 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 37 transitions. [2021-10-16 03:09:27,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:27,447 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 37 transitions. [2021-10-16 03:09:27,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-16 03:09:27,448 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:09:27,448 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:09:27,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-16 03:09:27,449 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:09:27,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:09:27,449 INFO L82 PathProgramCache]: Analyzing trace with hash -1935098783, now seen corresponding path program 1 times [2021-10-16 03:09:27,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:09:27,450 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706738741] [2021-10-16 03:09:27,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:09:27,450 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:09:27,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:09:27,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:09:27,545 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:09:27,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706738741] [2021-10-16 03:09:27,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706738741] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:09:27,550 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:09:27,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 03:09:27,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997857616] [2021-10-16 03:09:27,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 03:09:27,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:09:27,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 03:09:27,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:09:27,554 INFO L87 Difference]: Start difference. First operand 23 states and 37 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:27,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:09:27,590 INFO L93 Difference]: Finished difference Result 39 states and 61 transitions. [2021-10-16 03:09:27,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 03:09:27,591 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-16 03:09:27,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:09:27,597 INFO L225 Difference]: With dead ends: 39 [2021-10-16 03:09:27,597 INFO L226 Difference]: Without dead ends: 37 [2021-10-16 03:09:27,598 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:09:27,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-10-16 03:09:27,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 23. [2021-10-16 03:09:27,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:27,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 36 transitions. [2021-10-16 03:09:27,602 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 36 transitions. Word has length 9 [2021-10-16 03:09:27,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:09:27,602 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 36 transitions. [2021-10-16 03:09:27,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:27,603 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 36 transitions. [2021-10-16 03:09:27,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-16 03:09:27,603 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:09:27,603 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:09:27,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-16 03:09:27,604 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:09:27,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:09:27,605 INFO L82 PathProgramCache]: Analyzing trace with hash 141694566, now seen corresponding path program 1 times [2021-10-16 03:09:27,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:09:27,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984011092] [2021-10-16 03:09:27,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:09:27,605 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:09:27,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:09:27,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:09:27,652 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:09:27,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984011092] [2021-10-16 03:09:27,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984011092] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:09:27,652 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:09:27,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 03:09:27,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818299521] [2021-10-16 03:09:27,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 03:09:27,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:09:27,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 03:09:27,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:09:27,655 INFO L87 Difference]: Start difference. First operand 23 states and 36 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:27,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:09:27,687 INFO L93 Difference]: Finished difference Result 37 states and 56 transitions. [2021-10-16 03:09:27,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 03:09:27,687 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-16 03:09:27,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:09:27,688 INFO L225 Difference]: With dead ends: 37 [2021-10-16 03:09:27,688 INFO L226 Difference]: Without dead ends: 35 [2021-10-16 03:09:27,689 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:09:27,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-10-16 03:09:27,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 23. [2021-10-16 03:09:27,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:27,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 35 transitions. [2021-10-16 03:09:27,693 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 35 transitions. Word has length 10 [2021-10-16 03:09:27,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:09:27,693 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 35 transitions. [2021-10-16 03:09:27,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:27,694 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 35 transitions. [2021-10-16 03:09:27,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-16 03:09:27,694 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:09:27,694 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:09:27,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-16 03:09:27,695 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:09:27,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:09:27,695 INFO L82 PathProgramCache]: Analyzing trace with hash 97779286, now seen corresponding path program 1 times [2021-10-16 03:09:27,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:09:27,696 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344564054] [2021-10-16 03:09:27,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:09:27,696 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:09:27,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:09:27,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:09:27,796 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:09:27,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344564054] [2021-10-16 03:09:27,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344564054] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:09:27,798 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:09:27,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 03:09:27,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773691637] [2021-10-16 03:09:27,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 03:09:27,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:09:27,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 03:09:27,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:09:27,804 INFO L87 Difference]: Start difference. First operand 23 states and 35 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:27,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:09:27,829 INFO L93 Difference]: Finished difference Result 35 states and 51 transitions. [2021-10-16 03:09:27,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 03:09:27,829 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-16 03:09:27,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:09:27,830 INFO L225 Difference]: With dead ends: 35 [2021-10-16 03:09:27,830 INFO L226 Difference]: Without dead ends: 33 [2021-10-16 03:09:27,831 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:09:27,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-10-16 03:09:27,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 23. [2021-10-16 03:09:27,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 22 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:27,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 34 transitions. [2021-10-16 03:09:27,841 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 34 transitions. Word has length 11 [2021-10-16 03:09:27,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:09:27,841 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 34 transitions. [2021-10-16 03:09:27,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:27,842 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 34 transitions. [2021-10-16 03:09:27,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-16 03:09:27,842 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:09:27,843 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:09:27,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-16 03:09:27,844 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:09:27,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:09:27,846 INFO L82 PathProgramCache]: Analyzing trace with hash -1263594053, now seen corresponding path program 1 times [2021-10-16 03:09:27,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:09:27,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410701801] [2021-10-16 03:09:27,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:09:27,849 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:09:27,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:09:27,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:09:27,927 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:09:27,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410701801] [2021-10-16 03:09:27,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410701801] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:09:27,927 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:09:27,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 03:09:27,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818747245] [2021-10-16 03:09:27,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 03:09:27,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:09:27,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 03:09:27,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:09:27,930 INFO L87 Difference]: Start difference. First operand 23 states and 34 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:27,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:09:27,963 INFO L93 Difference]: Finished difference Result 33 states and 46 transitions. [2021-10-16 03:09:27,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 03:09:27,964 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-16 03:09:27,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:09:27,965 INFO L225 Difference]: With dead ends: 33 [2021-10-16 03:09:27,965 INFO L226 Difference]: Without dead ends: 31 [2021-10-16 03:09:27,965 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:09:27,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-10-16 03:09:27,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2021-10-16 03:09:27,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:27,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 33 transitions. [2021-10-16 03:09:27,969 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 33 transitions. Word has length 12 [2021-10-16 03:09:27,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:09:27,969 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 33 transitions. [2021-10-16 03:09:27,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:27,970 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 33 transitions. [2021-10-16 03:09:27,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-16 03:09:27,970 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:09:27,971 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:09:27,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-16 03:09:27,971 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:09:27,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:09:27,972 INFO L82 PathProgramCache]: Analyzing trace with hash -516494261, now seen corresponding path program 1 times [2021-10-16 03:09:27,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:09:27,972 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605485445] [2021-10-16 03:09:27,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:09:27,973 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:09:27,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:09:28,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:09:28,013 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:09:28,015 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605485445] [2021-10-16 03:09:28,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605485445] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:09:28,015 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:09:28,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 03:09:28,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617371680] [2021-10-16 03:09:28,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 03:09:28,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:09:28,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 03:09:28,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:09:28,019 INFO L87 Difference]: Start difference. First operand 23 states and 33 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:28,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:09:28,036 INFO L93 Difference]: Finished difference Result 31 states and 41 transitions. [2021-10-16 03:09:28,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 03:09:28,036 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-16 03:09:28,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:09:28,037 INFO L225 Difference]: With dead ends: 31 [2021-10-16 03:09:28,037 INFO L226 Difference]: Without dead ends: 29 [2021-10-16 03:09:28,038 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:09:28,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-16 03:09:28,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 23. [2021-10-16 03:09:28,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:28,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 32 transitions. [2021-10-16 03:09:28,046 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 32 transitions. Word has length 13 [2021-10-16 03:09:28,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:09:28,046 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 32 transitions. [2021-10-16 03:09:28,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:28,047 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 32 transitions. [2021-10-16 03:09:28,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-16 03:09:28,048 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:09:28,048 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:09:28,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-16 03:09:28,049 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:09:28,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:09:28,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1168763152, now seen corresponding path program 1 times [2021-10-16 03:09:28,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:09:28,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161590440] [2021-10-16 03:09:28,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:09:28,051 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:09:28,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:09:28,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:09:28,121 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:09:28,122 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161590440] [2021-10-16 03:09:28,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161590440] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:09:28,124 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:09:28,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 03:09:28,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880606756] [2021-10-16 03:09:28,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 03:09:28,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:09:28,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 03:09:28,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:09:28,134 INFO L87 Difference]: Start difference. First operand 23 states and 32 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:28,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:09:28,161 INFO L93 Difference]: Finished difference Result 25 states and 34 transitions. [2021-10-16 03:09:28,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 03:09:28,162 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-16 03:09:28,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:09:28,162 INFO L225 Difference]: With dead ends: 25 [2021-10-16 03:09:28,162 INFO L226 Difference]: Without dead ends: 0 [2021-10-16 03:09:28,163 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:09:28,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-16 03:09:28,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-16 03:09:28,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:28,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-16 03:09:28,164 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-10-16 03:09:28,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:09:28,164 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-16 03:09:28,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:28,164 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-16 03:09:28,164 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-16 03:09:28,167 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 03:09:28,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-16 03:09:28,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-16 03:09:28,184 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:09:28,186 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:09:28,187 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:09:28,189 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:09:28,195 INFO L857 garLoopResultBuilder]: For program point L126-1(lines 38 146) no Hoare annotation was computed. [2021-10-16 03:09:28,195 INFO L857 garLoopResultBuilder]: For program point L102(line 102) no Hoare annotation was computed. [2021-10-16 03:09:28,195 INFO L857 garLoopResultBuilder]: For program point L127(line 127) no Hoare annotation was computed. [2021-10-16 03:09:28,195 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-16 03:09:28,195 INFO L857 garLoopResultBuilder]: For program point L111-1(lines 38 146) no Hoare annotation was computed. [2021-10-16 03:09:28,195 INFO L857 garLoopResultBuilder]: For program point L136-1(lines 38 146) no Hoare annotation was computed. [2021-10-16 03:09:28,195 INFO L857 garLoopResultBuilder]: For program point L95-1(lines 38 146) no Hoare annotation was computed. [2021-10-16 03:09:28,195 INFO L857 garLoopResultBuilder]: For program point L112(line 112) no Hoare annotation was computed. [2021-10-16 03:09:28,196 INFO L857 garLoopResultBuilder]: For program point L137(line 137) no Hoare annotation was computed. [2021-10-16 03:09:28,196 INFO L857 garLoopResultBuilder]: For program point L121-1(lines 38 146) no Hoare annotation was computed. [2021-10-16 03:09:28,196 INFO L857 garLoopResultBuilder]: For program point L122(line 122) no Hoare annotation was computed. [2021-10-16 03:09:28,196 INFO L860 garLoopResultBuilder]: At program point L147(lines 7 151) the Hoare annotation is: true [2021-10-16 03:09:28,196 INFO L857 garLoopResultBuilder]: For program point L106-1(lines 38 146) no Hoare annotation was computed. [2021-10-16 03:09:28,196 INFO L857 garLoopResultBuilder]: For program point L40(lines 40 42) no Hoare annotation was computed. [2021-10-16 03:09:28,196 INFO L857 garLoopResultBuilder]: For program point L131-1(lines 38 146) no Hoare annotation was computed. [2021-10-16 03:09:28,196 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 149) no Hoare annotation was computed. [2021-10-16 03:09:28,197 INFO L857 garLoopResultBuilder]: For program point L107(line 107) no Hoare annotation was computed. [2021-10-16 03:09:28,197 INFO L857 garLoopResultBuilder]: For program point L132(line 132) no Hoare annotation was computed. [2021-10-16 03:09:28,197 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-16 03:09:28,197 INFO L857 garLoopResultBuilder]: For program point L116-1(lines 38 146) no Hoare annotation was computed. [2021-10-16 03:09:28,197 INFO L860 garLoopResultBuilder]: At program point L141-1(lines 38 146) the Hoare annotation is: true [2021-10-16 03:09:28,197 INFO L860 garLoopResultBuilder]: At program point L150(lines 6 151) the Hoare annotation is: true [2021-10-16 03:09:28,198 INFO L857 garLoopResultBuilder]: For program point L117(line 117) no Hoare annotation was computed. [2021-10-16 03:09:28,198 INFO L857 garLoopResultBuilder]: For program point L142(line 142) no Hoare annotation was computed. [2021-10-16 03:09:28,198 INFO L853 garLoopResultBuilder]: At program point L142-1(lines 7 151) the Hoare annotation is: false [2021-10-16 03:09:28,198 INFO L857 garLoopResultBuilder]: For program point L101-1(lines 38 146) no Hoare annotation was computed. [2021-10-16 03:09:28,203 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 03:09:28,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 03:09:28 BoogieIcfgContainer [2021-10-16 03:09:28,212 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 03:09:28,213 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 03:09:28,213 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 03:09:28,213 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 03:09:28,213 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:09:26" (3/4) ... [2021-10-16 03:09:28,216 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-16 03:09:28,227 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-10-16 03:09:28,227 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-16 03:09:28,227 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 03:09:28,228 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 03:09:28,276 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_358014a5-8d90-44d7-b51d-fcfd9028606f/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 03:09:28,276 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 03:09:28,278 INFO L168 Benchmark]: Toolchain (without parser) took 2653.27 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 67.8 MB in the beginning and 72.2 MB in the end (delta: -4.4 MB). Peak memory consumption was 19.6 MB. Max. memory is 16.1 GB. [2021-10-16 03:09:28,278 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 96.5 MB. Free memory is still 65.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:09:28,279 INFO L168 Benchmark]: CACSL2BoogieTranslator took 243.12 ms. Allocated memory is still 96.5 MB. Free memory was 67.6 MB in the beginning and 57.3 MB in the end (delta: 10.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 03:09:28,279 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.73 ms. Allocated memory is still 96.5 MB. Free memory was 57.3 MB in the beginning and 55.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 03:09:28,280 INFO L168 Benchmark]: Boogie Preprocessor took 30.13 ms. Allocated memory is still 96.5 MB. Free memory was 55.5 MB in the beginning and 54.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:09:28,280 INFO L168 Benchmark]: RCFGBuilder took 661.30 ms. Allocated memory is still 96.5 MB. Free memory was 54.4 MB in the beginning and 34.2 MB in the end (delta: 20.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-16 03:09:28,281 INFO L168 Benchmark]: TraceAbstraction took 1582.89 ms. Allocated memory is still 117.4 MB. Free memory was 94.0 MB in the beginning and 76.4 MB in the end (delta: 17.6 MB). Peak memory consumption was 17.4 MB. Max. memory is 16.1 GB. [2021-10-16 03:09:28,281 INFO L168 Benchmark]: Witness Printer took 63.93 ms. Allocated memory is still 117.4 MB. Free memory was 76.4 MB in the beginning and 72.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 03:09:28,283 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 96.5 MB. Free memory is still 65.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 243.12 ms. Allocated memory is still 96.5 MB. Free memory was 67.6 MB in the beginning and 57.3 MB in the end (delta: 10.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.73 ms. Allocated memory is still 96.5 MB. Free memory was 57.3 MB in the beginning and 55.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.13 ms. Allocated memory is still 96.5 MB. Free memory was 55.5 MB in the beginning and 54.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 661.30 ms. Allocated memory is still 96.5 MB. Free memory was 54.4 MB in the beginning and 34.2 MB in the end (delta: 20.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1582.89 ms. Allocated memory is still 117.4 MB. Free memory was 94.0 MB in the beginning and 76.4 MB in the end (delta: 17.6 MB). Peak memory consumption was 17.4 MB. Max. memory is 16.1 GB. * Witness Printer took 63.93 ms. Allocated memory is still 117.4 MB. Free memory was 76.4 MB in the beginning and 72.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 149]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1498.9ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 17.8ms, AutomataDifference: 403.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 26.6ms, InitialAbstractionConstructionTime: 12.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 302 SDtfs, 254 SDslu, 444 SDs, 0 SdLazy, 91 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 150.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 89.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, InterpolantAutomatonStates: 36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 64.2ms AutomataMinimizationTime, 9 MinimizatonAttempts, 104 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 9 NumberOfFragments, 4 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 17.6ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 2.6ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 29.5ms SsaConstructionTime, 210.3ms SatisfiabilityAnalysisTime, 506.8ms InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 81 ConstructedInterpolants, 0 QuantifiedInterpolants, 369 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2021-10-16 03:09:28,341 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_358014a5-8d90-44d7-b51d-fcfd9028606f/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...