./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/test-easy6.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ebb516-c3d7-4a32-a56a-be8b741c9663/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ebb516-c3d7-4a32-a56a-be8b741c9663/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ebb516-c3d7-4a32-a56a-be8b741c9663/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ebb516-c3d7-4a32-a56a-be8b741c9663/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/test-easy6.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ebb516-c3d7-4a32-a56a-be8b741c9663/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ebb516-c3d7-4a32-a56a-be8b741c9663/bin/utaipan-9zjyvhn0QE --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 fccc7b0ac30aa8fb83f4199c20be7500362e4a2e16c3523f5f3500c3487f8182 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 10:12:26,316 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:12:26,318 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:12:26,357 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:12:26,358 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:12:26,359 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:12:26,361 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:12:26,363 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:12:26,366 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:12:26,367 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:12:26,368 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:12:26,370 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:12:26,370 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:12:26,372 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:12:26,373 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:12:26,375 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:12:26,376 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:12:26,377 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:12:26,382 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:12:26,385 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:12:26,391 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:12:26,393 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:12:26,395 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:12:26,396 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:12:26,401 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:12:26,405 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:12:26,408 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:12:26,409 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:12:26,411 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:12:26,413 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:12:26,414 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:12:26,415 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:12:26,417 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:12:26,418 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:12:26,419 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:12:26,420 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:12:26,421 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:12:26,422 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:12:26,422 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:12:26,423 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:12:26,424 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:12:26,425 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ebb516-c3d7-4a32-a56a-be8b741c9663/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 10:12:26,477 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:12:26,480 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:12:26,481 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:12:26,481 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:12:26,482 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:12:26,482 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:12:26,482 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 10:12:26,482 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:12:26,489 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:12:26,489 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 10:12:26,491 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 10:12:26,491 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:12:26,491 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 10:12:26,492 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 10:12:26,492 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 10:12:26,493 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:12:26,493 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:12:26,493 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 10:12:26,493 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:12:26,493 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:12:26,494 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 10:12:26,494 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:12:26,494 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 10:12:26,494 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:12:26,495 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:12:26,495 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 10:12:26,495 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:12:26,495 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 10:12:26,496 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:12:26,498 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:12:26,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:12:26,499 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:12:26,499 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:12:26,499 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 10:12:26,499 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 10:12:26,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 10:12:26,500 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 10:12:26,500 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:12:26,500 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:12:26,501 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_94ebb516-c3d7-4a32-a56a-be8b741c9663/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ebb516-c3d7-4a32-a56a-be8b741c9663/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fccc7b0ac30aa8fb83f4199c20be7500362e4a2e16c3523f5f3500c3487f8182 [2021-10-24 10:12:26,793 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:12:26,820 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:12:26,822 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:12:26,824 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:12:26,825 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:12:26,826 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ebb516-c3d7-4a32-a56a-be8b741c9663/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/weaver/test-easy6.wvr.c [2021-10-24 10:12:26,910 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ebb516-c3d7-4a32-a56a-be8b741c9663/bin/utaipan-9zjyvhn0QE/data/e88e403d0/f9458b14ffc4416dab7e8478fa6629fb/FLAG54964fac3 [2021-10-24 10:12:27,356 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:12:27,357 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ebb516-c3d7-4a32-a56a-be8b741c9663/sv-benchmarks/c/weaver/test-easy6.wvr.c [2021-10-24 10:12:27,364 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ebb516-c3d7-4a32-a56a-be8b741c9663/bin/utaipan-9zjyvhn0QE/data/e88e403d0/f9458b14ffc4416dab7e8478fa6629fb/FLAG54964fac3 [2021-10-24 10:12:27,755 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ebb516-c3d7-4a32-a56a-be8b741c9663/bin/utaipan-9zjyvhn0QE/data/e88e403d0/f9458b14ffc4416dab7e8478fa6629fb [2021-10-24 10:12:27,758 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:12:27,759 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:12:27,766 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:12:27,767 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:12:27,782 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:12:27,783 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:12:27" (1/1) ... [2021-10-24 10:12:27,784 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15d92422 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:12:27, skipping insertion in model container [2021-10-24 10:12:27,784 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:12:27" (1/1) ... [2021-10-24 10:12:27,811 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:12:27,830 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:12:28,032 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_94ebb516-c3d7-4a32-a56a-be8b741c9663/sv-benchmarks/c/weaver/test-easy6.wvr.c[2038,2051] [2021-10-24 10:12:28,036 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:12:28,045 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 10:12:28,066 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_94ebb516-c3d7-4a32-a56a-be8b741c9663/sv-benchmarks/c/weaver/test-easy6.wvr.c[2038,2051] [2021-10-24 10:12:28,067 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:12:28,082 INFO L208 MainTranslator]: Completed translation [2021-10-24 10:12:28,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:12:28 WrapperNode [2021-10-24 10:12:28,082 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:12:28,084 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 10:12:28,084 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 10:12:28,084 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 10:12:28,091 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:12:28" (1/1) ... [2021-10-24 10:12:28,098 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:12:28" (1/1) ... [2021-10-24 10:12:28,119 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 10:12:28,120 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 10:12:28,120 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 10:12:28,120 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 10:12:28,129 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:12:28" (1/1) ... [2021-10-24 10:12:28,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:12:28" (1/1) ... [2021-10-24 10:12:28,132 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:12:28" (1/1) ... [2021-10-24 10:12:28,132 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:12:28" (1/1) ... [2021-10-24 10:12:28,138 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:12:28" (1/1) ... [2021-10-24 10:12:28,141 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:12:28" (1/1) ... [2021-10-24 10:12:28,142 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:12:28" (1/1) ... [2021-10-24 10:12:28,145 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 10:12:28,146 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 10:12:28,146 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 10:12:28,147 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 10:12:28,148 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:12:28" (1/1) ... [2021-10-24 10:12:28,156 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:12:28,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ebb516-c3d7-4a32-a56a-be8b741c9663/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:12:28,186 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ebb516-c3d7-4a32-a56a-be8b741c9663/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 10:12:28,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ebb516-c3d7-4a32-a56a-be8b741c9663/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 10:12:28,223 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-24 10:12:28,223 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-24 10:12:28,223 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-24 10:12:28,223 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-24 10:12:28,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 10:12:28,223 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 10:12:28,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-24 10:12:28,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 10:12:28,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 10:12:28,224 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-24 10:12:28,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-24 10:12:28,225 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-24 10:12:28,550 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 10:12:28,551 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-10-24 10:12:28,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:12:28 BoogieIcfgContainer [2021-10-24 10:12:28,553 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 10:12:28,555 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 10:12:28,555 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 10:12:28,559 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 10:12:28,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:12:27" (1/3) ... [2021-10-24 10:12:28,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@182dbfde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:12:28, skipping insertion in model container [2021-10-24 10:12:28,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:12:28" (2/3) ... [2021-10-24 10:12:28,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@182dbfde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:12:28, skipping insertion in model container [2021-10-24 10:12:28,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:12:28" (3/3) ... [2021-10-24 10:12:28,563 INFO L111 eAbstractionObserver]: Analyzing ICFG test-easy6.wvr.c [2021-10-24 10:12:28,569 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-24 10:12:28,570 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 10:12:28,570 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-24 10:12:28,570 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-24 10:12:28,605 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:12:28,606 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:12:28,606 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:12:28,606 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:12:28,607 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:12:28,607 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:12:28,607 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:12:28,607 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:12:28,608 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:12:28,608 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:12:28,608 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:12:28,609 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:12:28,609 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:12:28,610 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:12:28,610 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:12:28,610 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:12:28,610 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:12:28,611 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:12:28,611 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:12:28,611 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:12:28,612 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:12:28,612 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:12:28,612 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:12:28,612 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:12:28,613 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:12:28,613 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:12:28,614 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:12:28,614 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:12:28,615 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:12:28,616 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:12:28,616 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:12:28,616 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:12:28,617 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:12:28,617 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:12:28,617 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:12:28,617 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:12:28,618 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:12:28,618 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:12:28,618 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:12:28,619 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:12:28,619 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:12:28,619 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:12:28,620 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:12:28,620 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:12:28,620 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:12:28,621 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:12:28,621 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:12:28,621 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:12:28,621 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:12:28,622 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:12:28,622 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:12:28,622 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:12:28,623 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:12:28,623 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:12:28,624 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:12:28,624 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:12:28,628 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:12:28,628 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:12:28,628 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:12:28,629 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:12:28,634 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:12:28,634 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:12:28,634 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:12:28,635 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:12:28,644 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-24 10:12:28,710 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 10:12:28,717 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, mAutomataTypeConcurrency=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 [2021-10-24 10:12:28,721 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-24 10:12:28,755 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-24 10:12:28,771 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 97 transitions, 210 flow [2021-10-24 10:12:28,778 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 99 places, 97 transitions, 210 flow [2021-10-24 10:12:28,780 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 99 places, 97 transitions, 210 flow [2021-10-24 10:12:28,864 INFO L129 PetriNetUnfolder]: 5/95 cut-off events. [2021-10-24 10:12:28,865 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-24 10:12:28,870 INFO L84 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 95 events. 5/95 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 73 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2021-10-24 10:12:28,874 INFO L116 LiptonReduction]: Number of co-enabled transitions 1512 [2021-10-24 10:12:31,978 INFO L131 LiptonReduction]: Checked pairs total: 6327 [2021-10-24 10:12:31,979 INFO L133 LiptonReduction]: Total number of compositions: 86 [2021-10-24 10:12:31,988 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 37 places, 31 transitions, 78 flow [2021-10-24 10:12:32,016 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 244 states, 243 states have (on average 2.3127572016460904) internal successors, (562), 243 states have internal predecessors, (562), 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) [2021-10-24 10:12:32,020 INFO L276 IsEmpty]: Start isEmpty. Operand has 244 states, 243 states have (on average 2.3127572016460904) internal successors, (562), 243 states have internal predecessors, (562), 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) [2021-10-24 10:12:32,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-24 10:12:32,032 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:12:32,033 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:12:32,033 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-24 10:12:32,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:12:32,039 INFO L82 PathProgramCache]: Analyzing trace with hash -521772681, now seen corresponding path program 1 times [2021-10-24 10:12:32,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:12:32,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836840505] [2021-10-24 10:12:32,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:12:32,052 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:12:32,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:12:32,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:12:32,218 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:12:32,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836840505] [2021-10-24 10:12:32,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836840505] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:12:32,221 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:12:32,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 10:12:32,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012996005] [2021-10-24 10:12:32,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-24 10:12:32,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:12:32,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-24 10:12:32,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 10:12:32,257 INFO L87 Difference]: Start difference. First operand has 244 states, 243 states have (on average 2.3127572016460904) internal successors, (562), 243 states have internal predecessors, (562), 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 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 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) [2021-10-24 10:12:32,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:12:32,279 INFO L93 Difference]: Finished difference Result 244 states and 540 transitions. [2021-10-24 10:12:32,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-24 10:12:32,280 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 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 19 [2021-10-24 10:12:32,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:12:32,292 INFO L225 Difference]: With dead ends: 244 [2021-10-24 10:12:32,293 INFO L226 Difference]: Without dead ends: 244 [2021-10-24 10:12:32,294 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 10:12:32,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-10-24 10:12:32,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2021-10-24 10:12:32,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 243 states have (on average 2.2222222222222223) internal successors, (540), 243 states have internal predecessors, (540), 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) [2021-10-24 10:12:32,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 540 transitions. [2021-10-24 10:12:32,354 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 540 transitions. Word has length 19 [2021-10-24 10:12:32,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:12:32,355 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 540 transitions. [2021-10-24 10:12:32,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 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) [2021-10-24 10:12:32,356 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 540 transitions. [2021-10-24 10:12:32,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-24 10:12:32,360 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:12:32,360 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:12:32,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-24 10:12:32,361 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-24 10:12:32,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:12:32,361 INFO L82 PathProgramCache]: Analyzing trace with hash -494531042, now seen corresponding path program 1 times [2021-10-24 10:12:32,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:12:32,362 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313926294] [2021-10-24 10:12:32,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:12:32,363 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:12:32,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:12:32,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:12:32,688 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:12:32,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313926294] [2021-10-24 10:12:32,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313926294] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:12:32,689 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:12:32,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-24 10:12:32,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944839195] [2021-10-24 10:12:32,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-24 10:12:32,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:12:32,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-24 10:12:32,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-24 10:12:32,693 INFO L87 Difference]: Start difference. First operand 244 states and 540 transitions. Second operand has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 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) [2021-10-24 10:12:32,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:12:32,803 INFO L93 Difference]: Finished difference Result 295 states and 619 transitions. [2021-10-24 10:12:32,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-24 10:12:32,804 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 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 27 [2021-10-24 10:12:32,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:12:32,808 INFO L225 Difference]: With dead ends: 295 [2021-10-24 10:12:32,809 INFO L226 Difference]: Without dead ends: 230 [2021-10-24 10:12:32,810 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 68.6ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-10-24 10:12:32,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-10-24 10:12:32,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 198. [2021-10-24 10:12:32,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 2.203045685279188) internal successors, (434), 197 states have internal predecessors, (434), 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) [2021-10-24 10:12:32,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 434 transitions. [2021-10-24 10:12:32,845 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 434 transitions. Word has length 27 [2021-10-24 10:12:32,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:12:32,845 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 434 transitions. [2021-10-24 10:12:32,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 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) [2021-10-24 10:12:32,846 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 434 transitions. [2021-10-24 10:12:32,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-24 10:12:32,857 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:12:32,857 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:12:32,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-24 10:12:32,858 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-24 10:12:32,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:12:32,860 INFO L82 PathProgramCache]: Analyzing trace with hash 139317480, now seen corresponding path program 2 times [2021-10-24 10:12:32,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:12:32,861 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475605574] [2021-10-24 10:12:32,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:12:32,863 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:12:32,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:12:33,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:12:33,035 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:12:33,036 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475605574] [2021-10-24 10:12:33,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475605574] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:12:33,036 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:12:33,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-24 10:12:33,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200014465] [2021-10-24 10:12:33,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-24 10:12:33,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:12:33,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-24 10:12:33,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-24 10:12:33,039 INFO L87 Difference]: Start difference. First operand 198 states and 434 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 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) [2021-10-24 10:12:33,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:12:33,193 INFO L93 Difference]: Finished difference Result 352 states and 761 transitions. [2021-10-24 10:12:33,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-24 10:12:33,195 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 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 27 [2021-10-24 10:12:33,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:12:33,199 INFO L225 Difference]: With dead ends: 352 [2021-10-24 10:12:33,200 INFO L226 Difference]: Without dead ends: 272 [2021-10-24 10:12:33,201 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 82.2ms TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-10-24 10:12:33,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-10-24 10:12:33,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 168. [2021-10-24 10:12:33,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 167 states have (on average 2.179640718562874) internal successors, (364), 167 states have internal predecessors, (364), 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) [2021-10-24 10:12:33,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 364 transitions. [2021-10-24 10:12:33,230 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 364 transitions. Word has length 27 [2021-10-24 10:12:33,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:12:33,230 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 364 transitions. [2021-10-24 10:12:33,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 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) [2021-10-24 10:12:33,231 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 364 transitions. [2021-10-24 10:12:33,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-24 10:12:33,232 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:12:33,232 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:12:33,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-24 10:12:33,233 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-24 10:12:33,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:12:33,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1617785826, now seen corresponding path program 3 times [2021-10-24 10:12:33,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:12:33,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053271505] [2021-10-24 10:12:33,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:12:33,235 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:12:33,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:12:33,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:12:33,296 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:12:33,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053271505] [2021-10-24 10:12:33,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053271505] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:12:33,297 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:12:33,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-24 10:12:33,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917466523] [2021-10-24 10:12:33,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 10:12:33,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:12:33,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 10:12:33,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:12:33,299 INFO L87 Difference]: Start difference. First operand 168 states and 364 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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) [2021-10-24 10:12:33,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:12:33,317 INFO L93 Difference]: Finished difference Result 172 states and 360 transitions. [2021-10-24 10:12:33,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 10:12:33,318 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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 27 [2021-10-24 10:12:33,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:12:33,319 INFO L225 Difference]: With dead ends: 172 [2021-10-24 10:12:33,320 INFO L226 Difference]: Without dead ends: 156 [2021-10-24 10:12:33,320 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:12:33,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-10-24 10:12:33,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2021-10-24 10:12:33,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 2.1548387096774193) internal successors, (334), 155 states have internal predecessors, (334), 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) [2021-10-24 10:12:33,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 334 transitions. [2021-10-24 10:12:33,328 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 334 transitions. Word has length 27 [2021-10-24 10:12:33,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:12:33,328 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 334 transitions. [2021-10-24 10:12:33,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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) [2021-10-24 10:12:33,329 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 334 transitions. [2021-10-24 10:12:33,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-24 10:12:33,330 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:12:33,330 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:12:33,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-24 10:12:33,331 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-24 10:12:33,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:12:33,332 INFO L82 PathProgramCache]: Analyzing trace with hash -2078675490, now seen corresponding path program 4 times [2021-10-24 10:12:33,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:12:33,332 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633687477] [2021-10-24 10:12:33,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:12:33,333 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:12:33,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:12:33,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:12:33,454 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:12:33,454 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633687477] [2021-10-24 10:12:33,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633687477] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:12:33,455 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:12:33,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-24 10:12:33,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391172687] [2021-10-24 10:12:33,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-24 10:12:33,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:12:33,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-24 10:12:33,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-24 10:12:33,458 INFO L87 Difference]: Start difference. First operand 156 states and 334 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 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) [2021-10-24 10:12:33,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:12:33,586 INFO L93 Difference]: Finished difference Result 294 states and 613 transitions. [2021-10-24 10:12:33,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-24 10:12:33,587 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 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 27 [2021-10-24 10:12:33,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:12:33,589 INFO L225 Difference]: With dead ends: 294 [2021-10-24 10:12:33,590 INFO L226 Difference]: Without dead ends: 256 [2021-10-24 10:12:33,590 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 92.3ms TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-10-24 10:12:33,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-10-24 10:12:33,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 152. [2021-10-24 10:12:33,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 2.1456953642384105) internal successors, (324), 151 states have internal predecessors, (324), 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) [2021-10-24 10:12:33,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 324 transitions. [2021-10-24 10:12:33,597 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 324 transitions. Word has length 27 [2021-10-24 10:12:33,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:12:33,598 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 324 transitions. [2021-10-24 10:12:33,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 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) [2021-10-24 10:12:33,598 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 324 transitions. [2021-10-24 10:12:33,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-24 10:12:33,600 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:12:33,600 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:12:33,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-24 10:12:33,601 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-24 10:12:33,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:12:33,602 INFO L82 PathProgramCache]: Analyzing trace with hash -1274919172, now seen corresponding path program 5 times [2021-10-24 10:12:33,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:12:33,602 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405815348] [2021-10-24 10:12:33,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:12:33,603 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:12:33,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:12:33,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:12:33,747 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:12:33,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405815348] [2021-10-24 10:12:33,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405815348] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:12:33,748 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:12:33,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-24 10:12:33,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414103935] [2021-10-24 10:12:33,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-24 10:12:33,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:12:33,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-24 10:12:33,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-24 10:12:33,751 INFO L87 Difference]: Start difference. First operand 152 states and 324 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 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) [2021-10-24 10:12:33,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:12:33,870 INFO L93 Difference]: Finished difference Result 266 states and 549 transitions. [2021-10-24 10:12:33,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-24 10:12:33,871 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 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 27 [2021-10-24 10:12:33,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:12:33,873 INFO L225 Difference]: With dead ends: 266 [2021-10-24 10:12:33,873 INFO L226 Difference]: Without dead ends: 232 [2021-10-24 10:12:33,873 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 83.2ms TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-10-24 10:12:33,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-10-24 10:12:33,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 158. [2021-10-24 10:12:33,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 2.121019108280255) internal successors, (333), 157 states have internal predecessors, (333), 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) [2021-10-24 10:12:33,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 333 transitions. [2021-10-24 10:12:33,879 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 333 transitions. Word has length 27 [2021-10-24 10:12:33,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:12:33,879 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 333 transitions. [2021-10-24 10:12:33,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 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) [2021-10-24 10:12:33,880 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 333 transitions. [2021-10-24 10:12:33,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-24 10:12:33,881 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:12:33,881 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:12:33,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-24 10:12:33,882 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-24 10:12:33,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:12:33,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1137802774, now seen corresponding path program 6 times [2021-10-24 10:12:33,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:12:33,883 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194520992] [2021-10-24 10:12:33,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:12:33,883 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:12:33,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:12:33,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:12:33,933 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:12:33,933 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194520992] [2021-10-24 10:12:33,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194520992] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:12:33,934 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:12:33,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-24 10:12:33,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468584563] [2021-10-24 10:12:33,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 10:12:33,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:12:33,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 10:12:33,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:12:33,936 INFO L87 Difference]: Start difference. First operand 158 states and 333 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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) [2021-10-24 10:12:33,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:12:33,959 INFO L93 Difference]: Finished difference Result 172 states and 350 transitions. [2021-10-24 10:12:33,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 10:12:33,959 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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 27 [2021-10-24 10:12:33,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:12:33,961 INFO L225 Difference]: With dead ends: 172 [2021-10-24 10:12:33,961 INFO L226 Difference]: Without dead ends: 144 [2021-10-24 10:12:33,962 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:12:33,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-10-24 10:12:33,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2021-10-24 10:12:33,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 2.090909090909091) internal successors, (299), 143 states have internal predecessors, (299), 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) [2021-10-24 10:12:33,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 299 transitions. [2021-10-24 10:12:33,967 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 299 transitions. Word has length 27 [2021-10-24 10:12:33,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:12:33,968 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 299 transitions. [2021-10-24 10:12:33,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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) [2021-10-24 10:12:33,968 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 299 transitions. [2021-10-24 10:12:33,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-24 10:12:33,969 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:12:33,970 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:12:33,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-24 10:12:33,970 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-24 10:12:33,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:12:33,971 INFO L82 PathProgramCache]: Analyzing trace with hash -82938396, now seen corresponding path program 7 times [2021-10-24 10:12:33,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:12:33,971 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42259361] [2021-10-24 10:12:33,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:12:33,972 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:12:33,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:12:34,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:12:34,059 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:12:34,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42259361] [2021-10-24 10:12:34,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42259361] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:12:34,060 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:12:34,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-24 10:12:34,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693617318] [2021-10-24 10:12:34,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-24 10:12:34,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:12:34,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-24 10:12:34,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-24 10:12:34,062 INFO L87 Difference]: Start difference. First operand 144 states and 299 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 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) [2021-10-24 10:12:34,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:12:34,158 INFO L93 Difference]: Finished difference Result 122 states and 246 transitions. [2021-10-24 10:12:34,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-24 10:12:34,158 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 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 27 [2021-10-24 10:12:34,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:12:34,159 INFO L225 Difference]: With dead ends: 122 [2021-10-24 10:12:34,159 INFO L226 Difference]: Without dead ends: 122 [2021-10-24 10:12:34,159 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 77.0ms TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2021-10-24 10:12:34,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-10-24 10:12:34,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2021-10-24 10:12:34,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 2.0330578512396693) internal successors, (246), 121 states have internal predecessors, (246), 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) [2021-10-24 10:12:34,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 246 transitions. [2021-10-24 10:12:34,163 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 246 transitions. Word has length 27 [2021-10-24 10:12:34,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:12:34,163 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 246 transitions. [2021-10-24 10:12:34,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 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) [2021-10-24 10:12:34,164 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 246 transitions. [2021-10-24 10:12:34,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-24 10:12:34,164 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:12:34,165 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:12:34,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-24 10:12:34,165 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-24 10:12:34,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:12:34,166 INFO L82 PathProgramCache]: Analyzing trace with hash -2139910598, now seen corresponding path program 8 times [2021-10-24 10:12:34,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:12:34,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50420272] [2021-10-24 10:12:34,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:12:34,166 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:12:34,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:12:34,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:12:34,294 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:12:34,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50420272] [2021-10-24 10:12:34,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50420272] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:12:34,294 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:12:34,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-24 10:12:34,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631324665] [2021-10-24 10:12:34,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-24 10:12:34,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:12:34,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-24 10:12:34,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-10-24 10:12:34,297 INFO L87 Difference]: Start difference. First operand 122 states and 246 transitions. Second operand has 9 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 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) [2021-10-24 10:12:34,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:12:34,409 INFO L93 Difference]: Finished difference Result 124 states and 247 transitions. [2021-10-24 10:12:34,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-24 10:12:34,409 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 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 27 [2021-10-24 10:12:34,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:12:34,411 INFO L225 Difference]: With dead ends: 124 [2021-10-24 10:12:34,411 INFO L226 Difference]: Without dead ends: 112 [2021-10-24 10:12:34,412 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 107.5ms TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-10-24 10:12:34,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-10-24 10:12:34,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2021-10-24 10:12:34,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.990990990990991) internal successors, (221), 111 states have internal predecessors, (221), 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) [2021-10-24 10:12:34,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 221 transitions. [2021-10-24 10:12:34,417 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 221 transitions. Word has length 27 [2021-10-24 10:12:34,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:12:34,418 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 221 transitions. [2021-10-24 10:12:34,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 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) [2021-10-24 10:12:34,418 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 221 transitions. [2021-10-24 10:12:34,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-24 10:12:34,419 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:12:34,420 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:12:34,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-24 10:12:34,420 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-24 10:12:34,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:12:34,421 INFO L82 PathProgramCache]: Analyzing trace with hash 382124844, now seen corresponding path program 9 times [2021-10-24 10:12:34,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:12:34,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038335511] [2021-10-24 10:12:34,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:12:34,422 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:12:34,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:12:34,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:12:34,510 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:12:34,511 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038335511] [2021-10-24 10:12:34,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038335511] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:12:34,511 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:12:34,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-24 10:12:34,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370993641] [2021-10-24 10:12:34,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-24 10:12:34,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:12:34,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-24 10:12:34,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-24 10:12:34,514 INFO L87 Difference]: Start difference. First operand 112 states and 221 transitions. Second operand has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 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) [2021-10-24 10:12:34,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:12:34,560 INFO L93 Difference]: Finished difference Result 111 states and 220 transitions. [2021-10-24 10:12:34,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-24 10:12:34,569 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 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 27 [2021-10-24 10:12:34,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:12:34,571 INFO L225 Difference]: With dead ends: 111 [2021-10-24 10:12:34,572 INFO L226 Difference]: Without dead ends: 0 [2021-10-24 10:12:34,572 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 50.6ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-10-24 10:12:34,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-24 10:12:34,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-24 10:12:34,573 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) [2021-10-24 10:12:34,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-24 10:12:34,573 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2021-10-24 10:12:34,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:12:34,573 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-24 10:12:34,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 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) [2021-10-24 10:12:34,574 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-24 10:12:34,574 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-24 10:12:34,576 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:12:34,577 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-24 10:12:34,578 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-24 10:12:34,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-24 10:12:34,583 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-24 10:12:34,583 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:12:34,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:12:34 BasicIcfg [2021-10-24 10:12:34,586 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:12:34,587 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:12:34,587 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:12:34,587 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:12:34,588 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:12:28" (3/4) ... [2021-10-24 10:12:34,591 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-24 10:12:34,598 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-24 10:12:34,598 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-24 10:12:34,605 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-10-24 10:12:34,605 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-24 10:12:34,606 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-24 10:12:34,606 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-24 10:12:34,648 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ebb516-c3d7-4a32-a56a-be8b741c9663/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 10:12:34,649 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:12:34,654 INFO L168 Benchmark]: Toolchain (without parser) took 6893.27 ms. Allocated memory was 90.2 MB in the beginning and 134.2 MB in the end (delta: 44.0 MB). Free memory was 48.7 MB in the beginning and 80.7 MB in the end (delta: -32.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-24 10:12:34,655 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 90.2 MB. Free memory was 65.3 MB in the beginning and 65.2 MB in the end (delta: 53.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:12:34,656 INFO L168 Benchmark]: CACSL2BoogieTranslator took 316.54 ms. Allocated memory is still 90.2 MB. Free memory was 48.5 MB in the beginning and 64.7 MB in the end (delta: -16.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-24 10:12:34,656 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.47 ms. Allocated memory is still 90.2 MB. Free memory was 64.7 MB in the beginning and 62.9 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:12:34,656 INFO L168 Benchmark]: Boogie Preprocessor took 25.55 ms. Allocated memory is still 90.2 MB. Free memory was 62.9 MB in the beginning and 61.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:12:34,657 INFO L168 Benchmark]: RCFGBuilder took 407.47 ms. Allocated memory is still 90.2 MB. Free memory was 61.8 MB in the beginning and 50.3 MB in the end (delta: 11.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 10:12:34,657 INFO L168 Benchmark]: TraceAbstraction took 6031.04 ms. Allocated memory was 90.2 MB in the beginning and 134.2 MB in the end (delta: 44.0 MB). Free memory was 49.7 MB in the beginning and 83.8 MB in the end (delta: -34.1 MB). Peak memory consumption was 10.4 MB. Max. memory is 16.1 GB. [2021-10-24 10:12:34,658 INFO L168 Benchmark]: Witness Printer took 65.48 ms. Allocated memory is still 134.2 MB. Free memory was 83.8 MB in the beginning and 80.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-24 10:12:34,660 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 90.2 MB. Free memory was 65.3 MB in the beginning and 65.2 MB in the end (delta: 53.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 316.54 ms. Allocated memory is still 90.2 MB. Free memory was 48.5 MB in the beginning and 64.7 MB in the end (delta: -16.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.47 ms. Allocated memory is still 90.2 MB. Free memory was 64.7 MB in the beginning and 62.9 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.55 ms. Allocated memory is still 90.2 MB. Free memory was 62.9 MB in the beginning and 61.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 407.47 ms. Allocated memory is still 90.2 MB. Free memory was 61.8 MB in the beginning and 50.3 MB in the end (delta: 11.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6031.04 ms. Allocated memory was 90.2 MB in the beginning and 134.2 MB in the end (delta: 44.0 MB). Free memory was 49.7 MB in the beginning and 83.8 MB in the end (delta: -34.1 MB). Peak memory consumption was 10.4 MB. Max. memory is 16.1 GB. * Witness Printer took 65.48 ms. Allocated memory is still 134.2 MB. Free memory was 83.8 MB in the beginning and 80.7 MB in the end (delta: 3.1 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: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3200.5ms, 99 PlacesBefore, 37 PlacesAfterwards, 97 TransitionsBefore, 31 TransitionsAfterwards, 1512 CoEnabledTransitionPairs, 10 FixpointIterations, 39 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 11 ConcurrentYvCompositions, 4 ChoiceCompositions, 86 TotalNumberOfCompositions, 6327 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3770, positive: 3437, positive conditional: 0, positive unconditional: 3437, negative: 333, negative conditional: 0, negative unconditional: 333, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1289, positive: 1240, positive conditional: 0, positive unconditional: 1240, negative: 49, negative conditional: 0, negative unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1289, positive: 1220, positive conditional: 0, positive unconditional: 1220, negative: 69, negative conditional: 0, negative unconditional: 69, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 69, positive: 20, positive conditional: 0, positive unconditional: 20, negative: 49, negative conditional: 0, negative unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 190, positive: 33, positive conditional: 0, positive unconditional: 33, negative: 157, negative conditional: 0, negative unconditional: 157, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3770, positive: 2197, positive conditional: 0, positive unconditional: 2197, negative: 284, negative conditional: 0, negative unconditional: 284, unknown: 1289, unknown conditional: 0, unknown unconditional: 1289] , Statistics on independence cache: Total cache size (in pairs): 223, Positive cache size: 195, Positive conditional cache size: 0, Positive unconditional cache size: 195, Negative cache size: 28, Negative conditional cache size: 0, Negative unconditional cache size: 28 - 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: 80]: 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 with 1 thread instances CFG has 5 procedures, 135 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 5873.8ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 38.3ms, AutomataDifference: 921.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 3294.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 380 SDtfs, 604 SDslu, 977 SDs, 0 SdLazy, 392 SolverSat, 53 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 280.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 93 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 577.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=244occurred in iteration=0, InterpolantAutomatonStates: 67, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 146.9ms AutomataMinimizationTime, 10 MinimizatonAttempts, 314 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 33.4ms SsaConstructionTime, 360.9ms SatisfiabilityAnalysisTime, 842.9ms InterpolantComputationTime, 262 NumberOfCodeBlocks, 262 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 252 ConstructedInterpolants, 0 QuantifiedInterpolants, 914 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-24 10:12:34,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ebb516-c3d7-4a32-a56a-be8b741c9663/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...