./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl-simplified/s3_srvr_7.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl-simplified/s3_srvr_7.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ce0e70dc0336671c80322ad427b89a83e4632b5b ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl-simplified/s3_srvr_7.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ce0e70dc0336671c80322ad427b89a83e4632b5b .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:33:07,339 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:33:07,341 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:33:07,371 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:33:07,372 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:33:07,374 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:33:07,375 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:33:07,378 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:33:07,380 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:33:07,381 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:33:07,383 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:33:07,384 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:33:07,385 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:33:07,386 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:33:07,388 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:33:07,390 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:33:07,391 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:33:07,393 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:33:07,395 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:33:07,398 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:33:07,400 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:33:07,402 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:33:07,404 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:33:07,405 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:33:07,409 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:33:07,410 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:33:07,410 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:33:07,411 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:33:07,412 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:33:07,413 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:33:07,414 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:33:07,415 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:33:07,416 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:33:07,417 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:33:07,418 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:33:07,419 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:33:07,420 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:33:07,420 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:33:07,421 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:33:07,422 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:33:07,423 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:33:07,424 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 02:33:07,474 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:33:07,475 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:33:07,476 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:33:07,476 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:33:07,476 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:33:07,476 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:33:07,476 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:33:07,481 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:33:07,488 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:33:07,488 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:33:07,489 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:33:07,489 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:33:07,490 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:33:07,490 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:33:07,490 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:33:07,491 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:33:07,491 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:33:07,491 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:33:07,491 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:33:07,492 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:33:07,492 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:33:07,492 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:33:07,492 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:33:07,493 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:33:07,493 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:33:07,493 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:33:07,493 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:33:07,494 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:33:07,494 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:33:07,496 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:33:07,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:33:07,496 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:33:07,497 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:33:07,497 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:33:07,497 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:33:07,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:33:07,498 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:33:07,498 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:33:07,498 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:33:07,498 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_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce0e70dc0336671c80322ad427b89a83e4632b5b [2021-10-16 02:33:07,806 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:33:07,839 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:33:07,841 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:33:07,842 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:33:07,844 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:33:07,845 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/openssl-simplified/s3_srvr_7.cil.c [2021-10-16 02:33:07,938 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/data/f9f61c908/8db085c4b80e4ecbac9fa4ab0a0e243c/FLAG609f275ac [2021-10-16 02:33:08,464 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:33:08,465 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/sv-benchmarks/c/openssl-simplified/s3_srvr_7.cil.c [2021-10-16 02:33:08,477 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/data/f9f61c908/8db085c4b80e4ecbac9fa4ab0a0e243c/FLAG609f275ac [2021-10-16 02:33:08,832 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/data/f9f61c908/8db085c4b80e4ecbac9fa4ab0a0e243c [2021-10-16 02:33:08,836 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:33:08,837 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:33:08,843 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:33:08,843 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:33:08,847 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:33:08,847 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:33:08" (1/1) ... [2021-10-16 02:33:08,850 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cc7e6c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:08, skipping insertion in model container [2021-10-16 02:33:08,850 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:33:08" (1/1) ... [2021-10-16 02:33:08,857 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:33:08,919 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:33:09,237 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_aca553a9-f186-42cd-88d2-46b782921c2b/sv-benchmarks/c/openssl-simplified/s3_srvr_7.cil.c[44349,44362] [2021-10-16 02:33:09,254 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:33:09,262 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:33:09,332 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_aca553a9-f186-42cd-88d2-46b782921c2b/sv-benchmarks/c/openssl-simplified/s3_srvr_7.cil.c[44349,44362] [2021-10-16 02:33:09,335 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:33:09,355 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:33:09,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:09 WrapperNode [2021-10-16 02:33:09,356 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:33:09,357 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:33:09,357 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:33:09,357 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:33:09,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:09" (1/1) ... [2021-10-16 02:33:09,390 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:09" (1/1) ... [2021-10-16 02:33:09,439 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:33:09,440 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:33:09,440 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:33:09,441 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:33:09,451 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:09" (1/1) ... [2021-10-16 02:33:09,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:09" (1/1) ... [2021-10-16 02:33:09,463 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:09" (1/1) ... [2021-10-16 02:33:09,463 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:09" (1/1) ... [2021-10-16 02:33:09,473 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:09" (1/1) ... [2021-10-16 02:33:09,481 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:09" (1/1) ... [2021-10-16 02:33:09,484 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:09" (1/1) ... [2021-10-16 02:33:09,489 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:33:09,490 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:33:09,490 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:33:09,490 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:33:09,491 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:09" (1/1) ... [2021-10-16 02:33:09,511 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:33:09,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:33:09,538 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:33:09,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:33:09,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 02:33:09,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:33:09,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:33:09,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:33:09,697 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-16 02:33:10,203 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-10-16 02:33:10,203 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-10-16 02:33:10,654 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:33:10,655 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-16 02:33:10,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:33:10 BoogieIcfgContainer [2021-10-16 02:33:10,658 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:33:10,660 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:33:10,660 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:33:10,663 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:33:10,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:33:08" (1/3) ... [2021-10-16 02:33:10,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ee1e474 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:33:10, skipping insertion in model container [2021-10-16 02:33:10,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:09" (2/3) ... [2021-10-16 02:33:10,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ee1e474 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:33:10, skipping insertion in model container [2021-10-16 02:33:10,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:33:10" (3/3) ... [2021-10-16 02:33:10,667 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_7.cil.c [2021-10-16 02:33:10,680 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:33:10,680 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:33:10,722 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:33:10,728 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 02:33:10,729 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:33:10,746 INFO L276 IsEmpty]: Start isEmpty. Operand has 107 states, 105 states have (on average 1.7714285714285714) internal successors, (186), 106 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:10,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-16 02:33:10,752 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:33:10,752 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, 1] [2021-10-16 02:33:10,753 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:33:10,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:33:10,758 INFO L82 PathProgramCache]: Analyzing trace with hash 2142064794, now seen corresponding path program 1 times [2021-10-16 02:33:10,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:33:10,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969654066] [2021-10-16 02:33:10,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:33:10,769 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:33:10,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:33:10,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:33:10,967 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:33:10,967 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969654066] [2021-10-16 02:33:10,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969654066] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:33:10,968 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:33:10,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:33:10,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152627871] [2021-10-16 02:33:10,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:33:10,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:33:11,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:33:11,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:33:11,038 INFO L87 Difference]: Start difference. First operand has 107 states, 105 states have (on average 1.7714285714285714) internal successors, (186), 106 states have internal predecessors, (186), 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 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:11,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:33:11,290 INFO L93 Difference]: Finished difference Result 233 states and 404 transitions. [2021-10-16 02:33:11,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:33:11,292 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 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 28 [2021-10-16 02:33:11,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:33:11,307 INFO L225 Difference]: With dead ends: 233 [2021-10-16 02:33:11,307 INFO L226 Difference]: Without dead ends: 122 [2021-10-16 02:33:11,311 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:33:11,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-10-16 02:33:11,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 120. [2021-10-16 02:33:11,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.4789915966386555) internal successors, (176), 119 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:11,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 176 transitions. [2021-10-16 02:33:11,352 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 176 transitions. Word has length 28 [2021-10-16 02:33:11,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:33:11,353 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 176 transitions. [2021-10-16 02:33:11,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:11,353 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 176 transitions. [2021-10-16 02:33:11,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-10-16 02:33:11,356 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:33:11,356 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:33:11,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 02:33:11,357 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:33:11,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:33:11,357 INFO L82 PathProgramCache]: Analyzing trace with hash -398488519, now seen corresponding path program 1 times [2021-10-16 02:33:11,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:33:11,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100498660] [2021-10-16 02:33:11,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:33:11,359 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:33:11,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:33:11,469 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:33:11,470 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:33:11,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100498660] [2021-10-16 02:33:11,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100498660] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:33:11,471 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:33:11,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:33:11,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486305801] [2021-10-16 02:33:11,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:33:11,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:33:11,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:33:11,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:33:11,477 INFO L87 Difference]: Start difference. First operand 120 states and 176 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:11,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:33:11,660 INFO L93 Difference]: Finished difference Result 259 states and 386 transitions. [2021-10-16 02:33:11,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:33:11,660 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 42 [2021-10-16 02:33:11,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:33:11,663 INFO L225 Difference]: With dead ends: 259 [2021-10-16 02:33:11,663 INFO L226 Difference]: Without dead ends: 141 [2021-10-16 02:33:11,664 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:33:11,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-10-16 02:33:11,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 139. [2021-10-16 02:33:11,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 1.434782608695652) internal successors, (198), 138 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:11,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 198 transitions. [2021-10-16 02:33:11,677 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 198 transitions. Word has length 42 [2021-10-16 02:33:11,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:33:11,678 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 198 transitions. [2021-10-16 02:33:11,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:11,678 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 198 transitions. [2021-10-16 02:33:11,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-10-16 02:33:11,681 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:33:11,681 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:33:11,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 02:33:11,682 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:33:11,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:33:11,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1737049756, now seen corresponding path program 1 times [2021-10-16 02:33:11,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:33:11,683 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920605995] [2021-10-16 02:33:11,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:33:11,684 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:33:11,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:33:11,792 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:33:11,793 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:33:11,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920605995] [2021-10-16 02:33:11,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920605995] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 02:33:11,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47605624] [2021-10-16 02:33:11,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:33:11,794 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:33:11,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:33:11,796 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:33:11,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-16 02:33:11,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:33:11,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:33:11,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:33:12,375 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-16 02:33:12,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:33:12,630 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-16 02:33:12,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47605624] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:33:12,631 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-16 02:33:12,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [4] total 9 [2021-10-16 02:33:12,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775117678] [2021-10-16 02:33:12,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:33:12,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:33:12,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:33:12,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-10-16 02:33:12,634 INFO L87 Difference]: Start difference. First operand 139 states and 198 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:13,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:33:13,013 INFO L93 Difference]: Finished difference Result 381 states and 577 transitions. [2021-10-16 02:33:13,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:33:13,014 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 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 59 [2021-10-16 02:33:13,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:33:13,020 INFO L225 Difference]: With dead ends: 381 [2021-10-16 02:33:13,020 INFO L226 Difference]: Without dead ends: 244 [2021-10-16 02:33:13,024 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 32.9ms TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-10-16 02:33:13,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-10-16 02:33:13,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 206. [2021-10-16 02:33:13,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 205 states have (on average 1.3560975609756099) internal successors, (278), 205 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:13,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 278 transitions. [2021-10-16 02:33:13,048 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 278 transitions. Word has length 59 [2021-10-16 02:33:13,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:33:13,052 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 278 transitions. [2021-10-16 02:33:13,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:13,052 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 278 transitions. [2021-10-16 02:33:13,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-10-16 02:33:13,061 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:33:13,061 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:33:13,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:33:13,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:33:13,284 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:33:13,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:33:13,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1098450544, now seen corresponding path program 1 times [2021-10-16 02:33:13,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:33:13,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088273187] [2021-10-16 02:33:13,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:33:13,285 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:33:13,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:33:13,356 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-10-16 02:33:13,356 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:33:13,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088273187] [2021-10-16 02:33:13,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088273187] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:33:13,357 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:33:13,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:33:13,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231756505] [2021-10-16 02:33:13,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:33:13,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:33:13,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:33:13,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:33:13,359 INFO L87 Difference]: Start difference. First operand 206 states and 278 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:13,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:33:13,499 INFO L93 Difference]: Finished difference Result 443 states and 612 transitions. [2021-10-16 02:33:13,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:33:13,499 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 79 [2021-10-16 02:33:13,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:33:13,502 INFO L225 Difference]: With dead ends: 443 [2021-10-16 02:33:13,502 INFO L226 Difference]: Without dead ends: 239 [2021-10-16 02:33:13,503 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:33:13,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-10-16 02:33:13,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 229. [2021-10-16 02:33:13,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 228 states have (on average 1.3333333333333333) internal successors, (304), 228 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:13,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 304 transitions. [2021-10-16 02:33:13,516 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 304 transitions. Word has length 79 [2021-10-16 02:33:13,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:33:13,516 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 304 transitions. [2021-10-16 02:33:13,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:13,517 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 304 transitions. [2021-10-16 02:33:13,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-10-16 02:33:13,519 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:33:13,519 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2021-10-16 02:33:13,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-16 02:33:13,520 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:33:13,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:33:13,520 INFO L82 PathProgramCache]: Analyzing trace with hash -1895257496, now seen corresponding path program 1 times [2021-10-16 02:33:13,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:33:13,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862527198] [2021-10-16 02:33:13,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:33:13,521 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:33:13,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:33:13,594 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-10-16 02:33:13,594 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:33:13,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862527198] [2021-10-16 02:33:13,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862527198] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:33:13,595 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:33:13,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:33:13,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551155836] [2021-10-16 02:33:13,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:33:13,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:33:13,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:33:13,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:33:13,598 INFO L87 Difference]: Start difference. First operand 229 states and 304 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:13,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:33:13,727 INFO L93 Difference]: Finished difference Result 505 states and 677 transitions. [2021-10-16 02:33:13,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:33:13,728 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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 98 [2021-10-16 02:33:13,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:33:13,730 INFO L225 Difference]: With dead ends: 505 [2021-10-16 02:33:13,730 INFO L226 Difference]: Without dead ends: 278 [2021-10-16 02:33:13,731 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:33:13,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-10-16 02:33:13,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 268. [2021-10-16 02:33:13,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 267 states have (on average 1.307116104868914) internal successors, (349), 267 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:13,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 349 transitions. [2021-10-16 02:33:13,743 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 349 transitions. Word has length 98 [2021-10-16 02:33:13,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:33:13,744 INFO L470 AbstractCegarLoop]: Abstraction has 268 states and 349 transitions. [2021-10-16 02:33:13,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:13,744 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 349 transitions. [2021-10-16 02:33:13,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-10-16 02:33:13,746 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:33:13,746 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 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, 1] [2021-10-16 02:33:13,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-16 02:33:13,747 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:33:13,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:33:13,747 INFO L82 PathProgramCache]: Analyzing trace with hash 582440664, now seen corresponding path program 1 times [2021-10-16 02:33:13,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:33:13,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920037413] [2021-10-16 02:33:13,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:33:13,749 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:33:13,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:33:13,850 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-10-16 02:33:13,850 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:33:13,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920037413] [2021-10-16 02:33:13,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920037413] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 02:33:13,851 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854401642] [2021-10-16 02:33:13,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:33:13,851 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:33:13,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:33:13,852 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:33:13,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-16 02:33:14,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:33:14,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 02:33:14,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:33:14,376 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-10-16 02:33:14,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:33:14,655 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-10-16 02:33:14,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854401642] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:33:14,659 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-16 02:33:14,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [5] total 10 [2021-10-16 02:33:14,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923428742] [2021-10-16 02:33:14,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:33:14,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:33:14,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:33:14,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-16 02:33:14,665 INFO L87 Difference]: Start difference. First operand 268 states and 349 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:14,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:33:14,803 INFO L93 Difference]: Finished difference Result 1801 states and 2353 transitions. [2021-10-16 02:33:14,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 02:33:14,804 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 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 103 [2021-10-16 02:33:14,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:33:14,814 INFO L225 Difference]: With dead ends: 1801 [2021-10-16 02:33:14,814 INFO L226 Difference]: Without dead ends: 1535 [2021-10-16 02:33:14,815 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 203 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 83.5ms TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-10-16 02:33:14,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1535 states. [2021-10-16 02:33:14,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1535 to 531. [2021-10-16 02:33:14,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 530 states have (on average 1.3056603773584905) internal successors, (692), 530 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:14,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 692 transitions. [2021-10-16 02:33:14,849 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 692 transitions. Word has length 103 [2021-10-16 02:33:14,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:33:14,851 INFO L470 AbstractCegarLoop]: Abstraction has 531 states and 692 transitions. [2021-10-16 02:33:14,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:14,851 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 692 transitions. [2021-10-16 02:33:14,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-10-16 02:33:14,859 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:33:14,859 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 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, 1, 1] [2021-10-16 02:33:14,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-16 02:33:15,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-16 02:33:15,085 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:33:15,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:33:15,086 INFO L82 PathProgramCache]: Analyzing trace with hash -275243957, now seen corresponding path program 1 times [2021-10-16 02:33:15,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:33:15,086 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477546424] [2021-10-16 02:33:15,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:33:15,087 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:33:15,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:33:15,215 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 138 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:33:15,215 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:33:15,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477546424] [2021-10-16 02:33:15,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477546424] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 02:33:15,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236137839] [2021-10-16 02:33:15,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:33:15,218 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:33:15,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:33:15,219 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:33:15,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-16 02:33:15,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:33:15,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 02:33:15,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:33:15,760 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 138 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:33:15,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:33:16,094 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2021-10-16 02:33:16,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236137839] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-16 02:33:16,094 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2021-10-16 02:33:16,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6, 6] total 7 [2021-10-16 02:33:16,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547586558] [2021-10-16 02:33:16,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:33:16,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:33:16,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:33:16,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:33:16,097 INFO L87 Difference]: Start difference. First operand 531 states and 692 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:16,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:33:16,144 INFO L93 Difference]: Finished difference Result 980 states and 1289 transitions. [2021-10-16 02:33:16,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:33:16,145 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 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 104 [2021-10-16 02:33:16,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:33:16,151 INFO L225 Difference]: With dead ends: 980 [2021-10-16 02:33:16,151 INFO L226 Difference]: Without dead ends: 978 [2021-10-16 02:33:16,152 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.6ms TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:33:16,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2021-10-16 02:33:16,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 938. [2021-10-16 02:33:16,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 938 states, 937 states have (on average 1.3308431163287087) internal successors, (1247), 937 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:16,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 938 states to 938 states and 1247 transitions. [2021-10-16 02:33:16,189 INFO L78 Accepts]: Start accepts. Automaton has 938 states and 1247 transitions. Word has length 104 [2021-10-16 02:33:16,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:33:16,190 INFO L470 AbstractCegarLoop]: Abstraction has 938 states and 1247 transitions. [2021-10-16 02:33:16,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:16,190 INFO L276 IsEmpty]: Start isEmpty. Operand 938 states and 1247 transitions. [2021-10-16 02:33:16,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-10-16 02:33:16,192 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:33:16,193 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:33:16,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-16 02:33:16,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-10-16 02:33:16,417 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:33:16,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:33:16,418 INFO L82 PathProgramCache]: Analyzing trace with hash -2127353027, now seen corresponding path program 1 times [2021-10-16 02:33:16,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:33:16,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791652650] [2021-10-16 02:33:16,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:33:16,419 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:33:16,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:33:16,487 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-10-16 02:33:16,487 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:33:16,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791652650] [2021-10-16 02:33:16,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791652650] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:33:16,492 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:33:16,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:33:16,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416122900] [2021-10-16 02:33:16,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:33:16,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:33:16,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:33:16,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:33:16,502 INFO L87 Difference]: Start difference. First operand 938 states and 1247 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:16,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:33:16,691 INFO L93 Difference]: Finished difference Result 2078 states and 2848 transitions. [2021-10-16 02:33:16,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:33:16,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 106 [2021-10-16 02:33:16,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:33:16,699 INFO L225 Difference]: With dead ends: 2078 [2021-10-16 02:33:16,699 INFO L226 Difference]: Without dead ends: 1138 [2021-10-16 02:33:16,700 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:33:16,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1138 states. [2021-10-16 02:33:16,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1138 to 1126. [2021-10-16 02:33:16,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1126 states, 1125 states have (on average 1.3768888888888888) internal successors, (1549), 1125 states have internal predecessors, (1549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:16,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1126 states to 1126 states and 1549 transitions. [2021-10-16 02:33:16,748 INFO L78 Accepts]: Start accepts. Automaton has 1126 states and 1549 transitions. Word has length 106 [2021-10-16 02:33:16,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:33:16,748 INFO L470 AbstractCegarLoop]: Abstraction has 1126 states and 1549 transitions. [2021-10-16 02:33:16,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:16,748 INFO L276 IsEmpty]: Start isEmpty. Operand 1126 states and 1549 transitions. [2021-10-16 02:33:16,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-10-16 02:33:16,750 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:33:16,751 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:33:16,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-16 02:33:16,751 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:33:16,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:33:16,752 INFO L82 PathProgramCache]: Analyzing trace with hash -528984941, now seen corresponding path program 1 times [2021-10-16 02:33:16,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:33:16,752 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873553936] [2021-10-16 02:33:16,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:33:16,752 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:33:16,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:33:16,794 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-10-16 02:33:16,795 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:33:16,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873553936] [2021-10-16 02:33:16,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873553936] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:33:16,795 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:33:16,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:33:16,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087970927] [2021-10-16 02:33:16,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:33:16,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:33:16,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:33:16,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:33:16,797 INFO L87 Difference]: Start difference. First operand 1126 states and 1549 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:16,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:33:16,944 INFO L93 Difference]: Finished difference Result 2388 states and 3325 transitions. [2021-10-16 02:33:16,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:33:16,944 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 110 [2021-10-16 02:33:16,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:33:16,952 INFO L225 Difference]: With dead ends: 2388 [2021-10-16 02:33:16,952 INFO L226 Difference]: Without dead ends: 1264 [2021-10-16 02:33:16,954 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:33:16,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1264 states. [2021-10-16 02:33:16,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1264 to 1226. [2021-10-16 02:33:16,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1226 states, 1225 states have (on average 1.3559183673469388) internal successors, (1661), 1225 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:17,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 1661 transitions. [2021-10-16 02:33:17,005 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 1661 transitions. Word has length 110 [2021-10-16 02:33:17,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:33:17,005 INFO L470 AbstractCegarLoop]: Abstraction has 1226 states and 1661 transitions. [2021-10-16 02:33:17,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:17,006 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 1661 transitions. [2021-10-16 02:33:17,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-10-16 02:33:17,008 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:33:17,009 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:33:17,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-16 02:33:17,009 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:33:17,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:33:17,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1935593350, now seen corresponding path program 1 times [2021-10-16 02:33:17,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:33:17,010 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149988621] [2021-10-16 02:33:17,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:33:17,011 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:33:17,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:33:17,074 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2021-10-16 02:33:17,074 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:33:17,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149988621] [2021-10-16 02:33:17,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149988621] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:33:17,075 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:33:17,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:33:17,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961025511] [2021-10-16 02:33:17,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:33:17,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:33:17,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:33:17,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:33:17,077 INFO L87 Difference]: Start difference. First operand 1226 states and 1661 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:17,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:33:17,256 INFO L93 Difference]: Finished difference Result 2566 states and 3456 transitions. [2021-10-16 02:33:17,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:33:17,256 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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 132 [2021-10-16 02:33:17,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:33:17,264 INFO L225 Difference]: With dead ends: 2566 [2021-10-16 02:33:17,265 INFO L226 Difference]: Without dead ends: 1342 [2021-10-16 02:33:17,267 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:33:17,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1342 states. [2021-10-16 02:33:17,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1342 to 1334. [2021-10-16 02:33:17,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1334 states, 1333 states have (on average 1.3360840210052514) internal successors, (1781), 1333 states have internal predecessors, (1781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:17,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1334 states to 1334 states and 1781 transitions. [2021-10-16 02:33:17,327 INFO L78 Accepts]: Start accepts. Automaton has 1334 states and 1781 transitions. Word has length 132 [2021-10-16 02:33:17,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:33:17,327 INFO L470 AbstractCegarLoop]: Abstraction has 1334 states and 1781 transitions. [2021-10-16 02:33:17,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:17,328 INFO L276 IsEmpty]: Start isEmpty. Operand 1334 states and 1781 transitions. [2021-10-16 02:33:17,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-10-16 02:33:17,331 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:33:17,331 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-16 02:33:17,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-16 02:33:17,332 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:33:17,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:33:17,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1540633187, now seen corresponding path program 1 times [2021-10-16 02:33:17,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:33:17,335 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659778832] [2021-10-16 02:33:17,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:33:17,336 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:33:17,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:33:17,398 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2021-10-16 02:33:17,399 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:33:17,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659778832] [2021-10-16 02:33:17,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659778832] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:33:17,399 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:33:17,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:33:17,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53429193] [2021-10-16 02:33:17,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:33:17,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:33:17,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:33:17,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:33:17,401 INFO L87 Difference]: Start difference. First operand 1334 states and 1781 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:17,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:33:17,591 INFO L93 Difference]: Finished difference Result 2830 states and 3852 transitions. [2021-10-16 02:33:17,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:33:17,592 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 135 [2021-10-16 02:33:17,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:33:17,601 INFO L225 Difference]: With dead ends: 2830 [2021-10-16 02:33:17,602 INFO L226 Difference]: Without dead ends: 1454 [2021-10-16 02:33:17,606 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:33:17,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1454 states. [2021-10-16 02:33:17,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1454 to 1450. [2021-10-16 02:33:17,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1450 states, 1449 states have (on average 1.3229813664596273) internal successors, (1917), 1449 states have internal predecessors, (1917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:17,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1450 states to 1450 states and 1917 transitions. [2021-10-16 02:33:17,665 INFO L78 Accepts]: Start accepts. Automaton has 1450 states and 1917 transitions. Word has length 135 [2021-10-16 02:33:17,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:33:17,666 INFO L470 AbstractCegarLoop]: Abstraction has 1450 states and 1917 transitions. [2021-10-16 02:33:17,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:17,667 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states and 1917 transitions. [2021-10-16 02:33:17,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-10-16 02:33:17,670 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:33:17,670 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1] [2021-10-16 02:33:17,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-16 02:33:17,671 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:33:17,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:33:17,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1652380832, now seen corresponding path program 1 times [2021-10-16 02:33:17,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:33:17,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506353903] [2021-10-16 02:33:17,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:33:17,672 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:33:17,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:33:17,788 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 117 proven. 113 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-10-16 02:33:17,789 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:33:17,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506353903] [2021-10-16 02:33:17,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506353903] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 02:33:17,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047606289] [2021-10-16 02:33:17,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:33:17,790 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:33:17,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:33:17,791 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:33:17,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-16 02:33:18,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:33:18,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-16 02:33:18,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:33:18,583 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 0 proven. 236 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-10-16 02:33:18,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:33:19,362 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-10-16 02:33:19,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2047606289] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:33:19,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [324159161] [2021-10-16 02:33:19,385 INFO L159 IcfgInterpreter]: Started Sifa with 58 locations of interest [2021-10-16 02:33:19,385 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 02:33:19,390 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 02:33:19,395 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 02:33:19,395 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 02:33:19,604 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:33:19,606 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:33:19,607 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:33:19,608 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-16 02:33:19,609 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:33:19,609 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:33:19,610 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-16 02:33:19,622 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 402 [2021-10-16 02:33:19,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:33:19,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:33:19,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:33:19,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-16 02:33:19,695 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:33:19,696 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-16 02:33:19,696 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:33:19,697 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-16 02:33:19,697 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-16 02:33:19,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:33:19,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:33:19,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:33:19,729 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-16 02:33:19,730 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:33:19,736 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-16 02:33:19,736 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:33:19,737 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-16 02:33:19,737 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-16 02:33:19,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:33:19,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:33:19,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:33:19,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-16 02:33:19,770 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:33:19,771 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-16 02:33:19,772 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:33:19,772 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-16 02:33:19,772 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-16 02:33:19,775 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:33:19,934 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:33:19,988 INFO L180 QuantifierPusher]: treesize reduction 18, result has 98.4 percent of original size [2021-10-16 02:33:20,017 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1128 [2021-10-16 02:33:20,018 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-10-16 02:33:20,019 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 1 variables, input treesize:1137, output treesize:1128 [2021-10-16 02:33:20,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-16 02:33:20,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:33:20,245 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#valid_22| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-16 02:33:20,249 INFO L168 Benchmark]: Toolchain (without parser) took 11411.35 ms. Allocated memory was 98.6 MB in the beginning and 197.1 MB in the end (delta: 98.6 MB). Free memory was 63.9 MB in the beginning and 118.1 MB in the end (delta: -54.2 MB). Peak memory consumption was 118.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:33:20,249 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 98.6 MB. Free memory was 53.0 MB in the beginning and 52.9 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:33:20,250 INFO L168 Benchmark]: CACSL2BoogieTranslator took 513.48 ms. Allocated memory is still 98.6 MB. Free memory was 63.7 MB in the beginning and 69.3 MB in the end (delta: -5.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:33:20,250 INFO L168 Benchmark]: Boogie Procedure Inliner took 83.04 ms. Allocated memory is still 98.6 MB. Free memory was 68.9 MB in the beginning and 66.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:33:20,250 INFO L168 Benchmark]: Boogie Preprocessor took 48.55 ms. Allocated memory is still 98.6 MB. Free memory was 66.3 MB in the beginning and 64.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:33:20,251 INFO L168 Benchmark]: RCFGBuilder took 1168.56 ms. Allocated memory was 98.6 MB in the beginning and 127.9 MB in the end (delta: 29.4 MB). Free memory was 64.2 MB in the beginning and 76.2 MB in the end (delta: -12.1 MB). Peak memory consumption was 35.9 MB. Max. memory is 16.1 GB. [2021-10-16 02:33:20,251 INFO L168 Benchmark]: TraceAbstraction took 9588.28 ms. Allocated memory was 127.9 MB in the beginning and 197.1 MB in the end (delta: 69.2 MB). Free memory was 75.6 MB in the beginning and 118.1 MB in the end (delta: -42.5 MB). Peak memory consumption was 99.8 MB. Max. memory is 16.1 GB. [2021-10-16 02:33:20,253 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 98.6 MB. Free memory was 53.0 MB in the beginning and 52.9 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 513.48 ms. Allocated memory is still 98.6 MB. Free memory was 63.7 MB in the beginning and 69.3 MB in the end (delta: -5.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 83.04 ms. Allocated memory is still 98.6 MB. Free memory was 68.9 MB in the beginning and 66.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 48.55 ms. Allocated memory is still 98.6 MB. Free memory was 66.3 MB in the beginning and 64.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1168.56 ms. Allocated memory was 98.6 MB in the beginning and 127.9 MB in the end (delta: 29.4 MB). Free memory was 64.2 MB in the beginning and 76.2 MB in the end (delta: -12.1 MB). Peak memory consumption was 35.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9588.28 ms. Allocated memory was 127.9 MB in the beginning and 197.1 MB in the end (delta: 69.2 MB). Free memory was 75.6 MB in the beginning and 118.1 MB in the end (delta: -42.5 MB). Peak memory consumption was 99.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#valid_22| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#valid_22|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-16 02:33:20,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:33:22,863 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:33:22,867 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:33:22,930 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:33:22,931 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:33:22,935 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:33:22,937 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:33:22,942 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:33:22,945 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:33:22,953 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:33:22,955 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:33:22,957 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:33:22,957 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:33:22,960 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:33:22,962 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:33:22,966 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:33:22,968 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:33:22,973 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:33:22,975 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:33:22,982 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:33:22,985 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:33:22,986 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:33:22,988 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:33:22,991 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:33:23,000 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:33:23,001 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:33:23,001 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:33:23,003 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:33:23,004 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:33:23,005 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:33:23,005 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:33:23,006 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:33:23,009 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:33:23,010 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:33:23,012 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:33:23,012 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:33:23,014 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:33:23,014 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:33:23,015 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:33:23,017 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:33:23,018 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:33:23,019 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 02:33:23,064 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:33:23,065 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:33:23,066 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:33:23,067 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:33:23,067 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:33:23,067 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:33:23,067 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:33:23,068 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:33:23,068 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:33:23,069 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:33:23,070 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:33:23,071 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:33:23,071 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:33:23,071 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:33:23,072 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:33:23,072 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:33:23,072 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:33:23,072 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 02:33:23,072 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 02:33:23,073 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:33:23,073 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:33:23,073 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:33:23,073 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:33:23,074 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:33:23,074 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 02:33:23,074 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:33:23,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:33:23,075 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:33:23,075 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:33:23,075 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:33:23,075 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 02:33:23,076 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 02:33:23,076 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:33:23,076 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:33:23,077 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:33:23,077 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce0e70dc0336671c80322ad427b89a83e4632b5b [2021-10-16 02:33:23,511 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:33:23,534 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:33:23,537 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:33:23,538 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:33:23,539 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:33:23,540 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/openssl-simplified/s3_srvr_7.cil.c [2021-10-16 02:33:23,621 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/data/1c26a5f47/0f77067d58734abf9e23c2d0e007a4a7/FLAG9ee50e09c [2021-10-16 02:33:24,160 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:33:24,161 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/sv-benchmarks/c/openssl-simplified/s3_srvr_7.cil.c [2021-10-16 02:33:24,173 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/data/1c26a5f47/0f77067d58734abf9e23c2d0e007a4a7/FLAG9ee50e09c [2021-10-16 02:33:24,485 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/data/1c26a5f47/0f77067d58734abf9e23c2d0e007a4a7 [2021-10-16 02:33:24,489 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:33:24,491 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:33:24,494 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:33:24,495 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:33:24,498 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:33:24,499 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:33:24" (1/1) ... [2021-10-16 02:33:24,501 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2241fd50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:24, skipping insertion in model container [2021-10-16 02:33:24,501 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:33:24" (1/1) ... [2021-10-16 02:33:24,509 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:33:24,577 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:33:24,805 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_aca553a9-f186-42cd-88d2-46b782921c2b/sv-benchmarks/c/openssl-simplified/s3_srvr_7.cil.c[44349,44362] [2021-10-16 02:33:24,823 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:33:24,841 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:33:24,947 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_aca553a9-f186-42cd-88d2-46b782921c2b/sv-benchmarks/c/openssl-simplified/s3_srvr_7.cil.c[44349,44362] [2021-10-16 02:33:24,950 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:33:24,968 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:33:24,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:24 WrapperNode [2021-10-16 02:33:24,969 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:33:24,970 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:33:24,970 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:33:24,970 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:33:24,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:24" (1/1) ... [2021-10-16 02:33:24,991 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:24" (1/1) ... [2021-10-16 02:33:25,028 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:33:25,029 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:33:25,029 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:33:25,029 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:33:25,038 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:24" (1/1) ... [2021-10-16 02:33:25,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:24" (1/1) ... [2021-10-16 02:33:25,048 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:24" (1/1) ... [2021-10-16 02:33:25,061 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:24" (1/1) ... [2021-10-16 02:33:25,072 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:24" (1/1) ... [2021-10-16 02:33:25,097 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:24" (1/1) ... [2021-10-16 02:33:25,100 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:24" (1/1) ... [2021-10-16 02:33:25,107 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:33:25,114 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:33:25,115 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:33:25,115 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:33:25,116 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:24" (1/1) ... [2021-10-16 02:33:25,123 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:33:25,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:33:25,154 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:33:25,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:33:25,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 02:33:25,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:33:25,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:33:25,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:33:25,378 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-16 02:33:26,011 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-10-16 02:33:26,013 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-10-16 02:33:26,027 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:33:26,028 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-16 02:33:26,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:33:26 BoogieIcfgContainer [2021-10-16 02:33:26,030 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:33:26,032 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:33:26,033 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:33:26,036 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:33:26,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:33:24" (1/3) ... [2021-10-16 02:33:26,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18b8df9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:33:26, skipping insertion in model container [2021-10-16 02:33:26,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:24" (2/3) ... [2021-10-16 02:33:26,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18b8df9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:33:26, skipping insertion in model container [2021-10-16 02:33:26,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:33:26" (3/3) ... [2021-10-16 02:33:26,039 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_7.cil.c [2021-10-16 02:33:26,045 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:33:26,045 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:33:26,121 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:33:26,127 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 02:33:26,127 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:33:26,145 INFO L276 IsEmpty]: Start isEmpty. Operand has 146 states, 144 states have (on average 1.7361111111111112) internal successors, (250), 145 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:26,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-16 02:33:26,153 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:33:26,154 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, 1, 1, 1, 1, 1, 1] [2021-10-16 02:33:26,154 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:33:26,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:33:26,160 INFO L82 PathProgramCache]: Analyzing trace with hash -1801233509, now seen corresponding path program 1 times [2021-10-16 02:33:26,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:33:26,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1450705349] [2021-10-16 02:33:26,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:33:26,172 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:33:26,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:33:26,175 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:33:26,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 02:33:26,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:33:26,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:33:26,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:33:26,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:33:26,504 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:33:26,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:33:26,714 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:33:26,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1450705349] [2021-10-16 02:33:26,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1450705349] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:33:26,715 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:33:26,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:33:26,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186737165] [2021-10-16 02:33:26,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:33:26,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:33:26,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:33:26,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:33:26,745 INFO L87 Difference]: Start difference. First operand has 146 states, 144 states have (on average 1.7361111111111112) internal successors, (250), 145 states have internal predecessors, (250), 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 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:27,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:33:27,014 INFO L93 Difference]: Finished difference Result 312 states and 534 transitions. [2021-10-16 02:33:27,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:33:27,016 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-10-16 02:33:27,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:33:27,033 INFO L225 Difference]: With dead ends: 312 [2021-10-16 02:33:27,033 INFO L226 Difference]: Without dead ends: 154 [2021-10-16 02:33:27,038 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:33:27,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-10-16 02:33:27,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 151. [2021-10-16 02:33:27,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 1.5266666666666666) internal successors, (229), 150 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:27,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 229 transitions. [2021-10-16 02:33:27,102 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 229 transitions. Word has length 33 [2021-10-16 02:33:27,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:33:27,103 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 229 transitions. [2021-10-16 02:33:27,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:27,103 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 229 transitions. [2021-10-16 02:33:27,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-10-16 02:33:27,108 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:33:27,108 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1] [2021-10-16 02:33:27,121 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:33:27,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:33:27,317 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:33:27,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:33:27,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1779167419, now seen corresponding path program 1 times [2021-10-16 02:33:27,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:33:27,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [216967949] [2021-10-16 02:33:27,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:33:27,320 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:33:27,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:33:27,325 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:33:27,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 02:33:27,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:33:27,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:33:27,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:33:27,631 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:33:27,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:33:27,805 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:33:27,806 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:33:27,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [216967949] [2021-10-16 02:33:27,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [216967949] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:33:27,807 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:33:27,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:33:27,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554082666] [2021-10-16 02:33:27,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:33:27,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:33:27,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:33:27,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:33:27,812 INFO L87 Difference]: Start difference. First operand 151 states and 229 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:27,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:33:27,999 INFO L93 Difference]: Finished difference Result 319 states and 490 transitions. [2021-10-16 02:33:28,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:33:28,001 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 49 [2021-10-16 02:33:28,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:33:28,003 INFO L225 Difference]: With dead ends: 319 [2021-10-16 02:33:28,004 INFO L226 Difference]: Without dead ends: 176 [2021-10-16 02:33:28,005 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:33:28,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-10-16 02:33:28,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 172. [2021-10-16 02:33:28,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 1.4912280701754386) internal successors, (255), 171 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:28,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 255 transitions. [2021-10-16 02:33:28,018 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 255 transitions. Word has length 49 [2021-10-16 02:33:28,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:33:28,018 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 255 transitions. [2021-10-16 02:33:28,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:28,019 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 255 transitions. [2021-10-16 02:33:28,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-10-16 02:33:28,022 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:33:28,022 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1] [2021-10-16 02:33:28,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 02:33:28,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:33:28,233 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:33:28,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:33:28,234 INFO L82 PathProgramCache]: Analyzing trace with hash 846918541, now seen corresponding path program 1 times [2021-10-16 02:33:28,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:33:28,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [117639050] [2021-10-16 02:33:28,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:33:28,235 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:33:28,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:33:28,238 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:33:28,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 02:33:28,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:33:28,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:33:28,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:33:28,544 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 02:33:28,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:33:28,728 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 02:33:28,728 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:33:28,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [117639050] [2021-10-16 02:33:28,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [117639050] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:33:28,729 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:33:28,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 02:33:28,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209092817] [2021-10-16 02:33:28,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:33:28,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:33:28,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:33:28,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:33:28,731 INFO L87 Difference]: Start difference. First operand 172 states and 255 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:29,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:33:29,005 INFO L93 Difference]: Finished difference Result 422 states and 651 transitions. [2021-10-16 02:33:29,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:33:29,005 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 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 70 [2021-10-16 02:33:29,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:33:29,007 INFO L225 Difference]: With dead ends: 422 [2021-10-16 02:33:29,007 INFO L226 Difference]: Without dead ends: 258 [2021-10-16 02:33:29,008 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:33:29,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-10-16 02:33:29,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 241. [2021-10-16 02:33:29,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 240 states have (on average 1.4625) internal successors, (351), 240 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:29,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 351 transitions. [2021-10-16 02:33:29,032 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 351 transitions. Word has length 70 [2021-10-16 02:33:29,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:33:29,034 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 351 transitions. [2021-10-16 02:33:29,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:29,035 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 351 transitions. [2021-10-16 02:33:29,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-10-16 02:33:29,041 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:33:29,041 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1] [2021-10-16 02:33:29,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-16 02:33:29,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:33:29,270 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:33:29,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:33:29,272 INFO L82 PathProgramCache]: Analyzing trace with hash -215989280, now seen corresponding path program 1 times [2021-10-16 02:33:29,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:33:29,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2062674433] [2021-10-16 02:33:29,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:33:29,274 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:33:29,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:33:29,275 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:33:29,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-16 02:33:29,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:33:29,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:33:29,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:33:29,635 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 02:33:29,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:33:29,809 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 02:33:29,810 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:33:29,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2062674433] [2021-10-16 02:33:29,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2062674433] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:33:29,810 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:33:29,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:33:29,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061386944] [2021-10-16 02:33:29,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:33:29,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:33:29,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:33:29,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:33:29,812 INFO L87 Difference]: Start difference. First operand 241 states and 351 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:29,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:33:29,948 INFO L93 Difference]: Finished difference Result 502 states and 739 transitions. [2021-10-16 02:33:29,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:33:29,948 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 71 [2021-10-16 02:33:29,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:33:29,950 INFO L225 Difference]: With dead ends: 502 [2021-10-16 02:33:29,950 INFO L226 Difference]: Without dead ends: 269 [2021-10-16 02:33:29,950 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:33:29,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2021-10-16 02:33:29,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 264. [2021-10-16 02:33:29,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 263 states have (on average 1.44106463878327) internal successors, (379), 263 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:29,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 379 transitions. [2021-10-16 02:33:29,967 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 379 transitions. Word has length 71 [2021-10-16 02:33:29,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:33:29,967 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 379 transitions. [2021-10-16 02:33:29,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:29,968 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 379 transitions. [2021-10-16 02:33:29,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-10-16 02:33:29,977 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:33:29,977 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2021-10-16 02:33:29,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-16 02:33:30,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:33:30,191 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:33:30,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:33:30,192 INFO L82 PathProgramCache]: Analyzing trace with hash 43387912, now seen corresponding path program 1 times [2021-10-16 02:33:30,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:33:30,192 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2069368589] [2021-10-16 02:33:30,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:33:30,193 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:33:30,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:33:30,195 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:33:30,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-16 02:33:30,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:33:30,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:33:30,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:33:30,612 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-16 02:33:30,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:33:30,788 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-16 02:33:30,788 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:33:30,788 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2069368589] [2021-10-16 02:33:30,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2069368589] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:33:30,792 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:33:30,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:33:30,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879153872] [2021-10-16 02:33:30,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:33:30,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:33:30,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:33:30,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:33:30,796 INFO L87 Difference]: Start difference. First operand 264 states and 379 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:30,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:33:30,950 INFO L93 Difference]: Finished difference Result 559 states and 815 transitions. [2021-10-16 02:33:30,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:33:30,955 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 92 [2021-10-16 02:33:30,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:33:30,957 INFO L225 Difference]: With dead ends: 559 [2021-10-16 02:33:30,957 INFO L226 Difference]: Without dead ends: 303 [2021-10-16 02:33:30,958 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:33:30,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-10-16 02:33:30,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 289. [2021-10-16 02:33:30,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 288 states have (on average 1.4201388888888888) internal successors, (409), 288 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:30,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 409 transitions. [2021-10-16 02:33:30,970 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 409 transitions. Word has length 92 [2021-10-16 02:33:30,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:33:30,970 INFO L470 AbstractCegarLoop]: Abstraction has 289 states and 409 transitions. [2021-10-16 02:33:30,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:30,971 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 409 transitions. [2021-10-16 02:33:30,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-10-16 02:33:30,972 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:33:30,973 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:33:30,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-16 02:33:31,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:33:31,184 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:33:31,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:33:31,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1432120208, now seen corresponding path program 1 times [2021-10-16 02:33:31,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:33:31,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [139107040] [2021-10-16 02:33:31,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:33:31,186 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:33:31,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:33:31,187 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:33:31,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-16 02:33:31,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:33:31,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:33:31,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:33:31,754 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-16 02:33:31,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:33:31,989 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-16 02:33:31,989 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:33:31,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [139107040] [2021-10-16 02:33:31,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [139107040] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:33:31,990 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:33:31,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 02:33:31,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552551670] [2021-10-16 02:33:31,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:33:31,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:33:31,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:33:31,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:33:31,991 INFO L87 Difference]: Start difference. First operand 289 states and 409 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:32,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:33:32,268 INFO L93 Difference]: Finished difference Result 654 states and 957 transitions. [2021-10-16 02:33:32,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:33:32,269 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 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 111 [2021-10-16 02:33:32,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:33:32,273 INFO L225 Difference]: With dead ends: 654 [2021-10-16 02:33:32,274 INFO L226 Difference]: Without dead ends: 373 [2021-10-16 02:33:32,274 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:33:32,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2021-10-16 02:33:32,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 359. [2021-10-16 02:33:32,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 358 states have (on average 1.4162011173184357) internal successors, (507), 358 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:32,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 507 transitions. [2021-10-16 02:33:32,295 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 507 transitions. Word has length 111 [2021-10-16 02:33:32,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:33:32,296 INFO L470 AbstractCegarLoop]: Abstraction has 359 states and 507 transitions. [2021-10-16 02:33:32,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:32,298 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 507 transitions. [2021-10-16 02:33:32,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-10-16 02:33:32,304 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:33:32,304 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:33:32,317 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-16 02:33:32,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:33:32,518 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:33:32,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:33:32,518 INFO L82 PathProgramCache]: Analyzing trace with hash -1900430797, now seen corresponding path program 1 times [2021-10-16 02:33:32,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:33:32,519 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1731846721] [2021-10-16 02:33:32,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:33:32,520 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:33:32,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:33:32,521 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:33:32,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-16 02:33:32,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:33:32,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:33:32,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:33:33,006 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-10-16 02:33:33,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:33:33,229 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-10-16 02:33:33,230 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:33:33,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1731846721] [2021-10-16 02:33:33,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1731846721] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:33:33,230 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:33:33,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 02:33:33,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842096278] [2021-10-16 02:33:33,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:33:33,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:33:33,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:33:33,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:33:33,233 INFO L87 Difference]: Start difference. First operand 359 states and 507 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:33,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:33:33,301 INFO L93 Difference]: Finished difference Result 1397 states and 1964 transitions. [2021-10-16 02:33:33,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:33:33,302 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 117 [2021-10-16 02:33:33,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:33:33,309 INFO L225 Difference]: With dead ends: 1397 [2021-10-16 02:33:33,309 INFO L226 Difference]: Without dead ends: 1046 [2021-10-16 02:33:33,310 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:33:33,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2021-10-16 02:33:33,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 360. [2021-10-16 02:33:33,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 359 states have (on average 1.415041782729805) internal successors, (508), 359 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:33,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 508 transitions. [2021-10-16 02:33:33,331 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 508 transitions. Word has length 117 [2021-10-16 02:33:33,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:33:33,332 INFO L470 AbstractCegarLoop]: Abstraction has 360 states and 508 transitions. [2021-10-16 02:33:33,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:33,332 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 508 transitions. [2021-10-16 02:33:33,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-10-16 02:33:33,334 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:33:33,334 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:33:33,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-16 02:33:33,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:33:33,546 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:33:33,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:33:33,547 INFO L82 PathProgramCache]: Analyzing trace with hash 150553201, now seen corresponding path program 1 times [2021-10-16 02:33:33,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:33:33,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [896685576] [2021-10-16 02:33:33,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:33:33,548 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:33:33,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:33:33,577 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:33:33,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-16 02:33:33,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:33:33,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:33:33,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:33:34,147 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-10-16 02:33:34,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:33:34,371 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-10-16 02:33:34,371 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:33:34,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [896685576] [2021-10-16 02:33:34,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [896685576] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:33:34,372 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:33:34,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 02:33:34,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514799719] [2021-10-16 02:33:34,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:33:34,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:33:34,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:33:34,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:33:34,374 INFO L87 Difference]: Start difference. First operand 360 states and 508 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:34,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:33:34,420 INFO L93 Difference]: Finished difference Result 1054 states and 1482 transitions. [2021-10-16 02:33:34,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:33:34,421 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 117 [2021-10-16 02:33:34,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:33:34,425 INFO L225 Difference]: With dead ends: 1054 [2021-10-16 02:33:34,426 INFO L226 Difference]: Without dead ends: 702 [2021-10-16 02:33:34,427 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:33:34,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2021-10-16 02:33:34,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 360. [2021-10-16 02:33:34,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 359 states have (on average 1.4122562674094707) internal successors, (507), 359 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:34,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 507 transitions. [2021-10-16 02:33:34,447 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 507 transitions. Word has length 117 [2021-10-16 02:33:34,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:33:34,448 INFO L470 AbstractCegarLoop]: Abstraction has 360 states and 507 transitions. [2021-10-16 02:33:34,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:34,449 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 507 transitions. [2021-10-16 02:33:34,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-10-16 02:33:34,450 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:33:34,450 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:33:34,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-16 02:33:34,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:33:34,662 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:33:34,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:33:34,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1784226940, now seen corresponding path program 1 times [2021-10-16 02:33:34,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:33:34,664 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1647304745] [2021-10-16 02:33:34,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:33:34,664 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:33:34,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:33:34,666 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:33:34,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-16 02:33:34,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:33:35,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:33:35,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:33:35,270 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-10-16 02:33:35,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:33:35,583 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-10-16 02:33:35,583 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:33:35,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1647304745] [2021-10-16 02:33:35,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1647304745] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:33:35,586 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:33:35,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 02:33:35,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813791714] [2021-10-16 02:33:35,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:33:35,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:33:35,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:33:35,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:33:35,589 INFO L87 Difference]: Start difference. First operand 360 states and 507 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:35,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:33:35,689 INFO L93 Difference]: Finished difference Result 1364 states and 1935 transitions. [2021-10-16 02:33:35,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:33:35,689 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 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 118 [2021-10-16 02:33:35,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:33:35,696 INFO L225 Difference]: With dead ends: 1364 [2021-10-16 02:33:35,696 INFO L226 Difference]: Without dead ends: 1012 [2021-10-16 02:33:35,697 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:33:35,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2021-10-16 02:33:35,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 1012. [2021-10-16 02:33:35,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1012 states, 1011 states have (on average 1.4154302670623145) internal successors, (1431), 1011 states have internal predecessors, (1431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:35,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1012 states to 1012 states and 1431 transitions. [2021-10-16 02:33:35,746 INFO L78 Accepts]: Start accepts. Automaton has 1012 states and 1431 transitions. Word has length 118 [2021-10-16 02:33:35,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:33:35,747 INFO L470 AbstractCegarLoop]: Abstraction has 1012 states and 1431 transitions. [2021-10-16 02:33:35,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:35,747 INFO L276 IsEmpty]: Start isEmpty. Operand 1012 states and 1431 transitions. [2021-10-16 02:33:35,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-10-16 02:33:35,750 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:33:35,750 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:33:35,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-16 02:33:35,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:33:35,962 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:33:35,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:33:35,963 INFO L82 PathProgramCache]: Analyzing trace with hash 1001148476, now seen corresponding path program 1 times [2021-10-16 02:33:35,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:33:35,964 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1941551294] [2021-10-16 02:33:35,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:33:35,964 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:33:35,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:33:35,965 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:33:35,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-16 02:33:36,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:33:36,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:33:36,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:33:36,700 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-10-16 02:33:36,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:33:36,958 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-10-16 02:33:36,959 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:33:36,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1941551294] [2021-10-16 02:33:36,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1941551294] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:33:36,959 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:33:36,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:33:36,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986956308] [2021-10-16 02:33:36,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:33:36,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:33:36,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:33:36,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:33:36,962 INFO L87 Difference]: Start difference. First operand 1012 states and 1431 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:37,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:33:37,018 INFO L93 Difference]: Finished difference Result 2040 states and 2880 transitions. [2021-10-16 02:33:37,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:33:37,019 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 118 [2021-10-16 02:33:37,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:33:37,025 INFO L225 Difference]: With dead ends: 2040 [2021-10-16 02:33:37,025 INFO L226 Difference]: Without dead ends: 1036 [2021-10-16 02:33:37,027 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:33:37,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2021-10-16 02:33:37,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 1036. [2021-10-16 02:33:37,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1036 states, 1035 states have (on average 1.4106280193236715) internal successors, (1460), 1035 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:37,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1460 transitions. [2021-10-16 02:33:37,079 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1460 transitions. Word has length 118 [2021-10-16 02:33:37,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:33:37,080 INFO L470 AbstractCegarLoop]: Abstraction has 1036 states and 1460 transitions. [2021-10-16 02:33:37,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:37,080 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1460 transitions. [2021-10-16 02:33:37,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-10-16 02:33:37,082 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:33:37,083 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:33:37,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-16 02:33:37,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:33:37,295 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:33:37,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:33:37,295 INFO L82 PathProgramCache]: Analyzing trace with hash -1396322054, now seen corresponding path program 1 times [2021-10-16 02:33:37,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:33:37,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [265886678] [2021-10-16 02:33:37,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:33:37,296 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:33:37,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:33:37,297 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:33:37,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-16 02:33:37,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:33:37,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:33:37,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:33:37,971 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-10-16 02:33:37,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:33:38,261 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-10-16 02:33:38,262 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:33:38,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [265886678] [2021-10-16 02:33:38,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [265886678] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:33:38,262 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:33:38,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:33:38,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971424369] [2021-10-16 02:33:38,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:33:38,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:33:38,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:33:38,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:33:38,264 INFO L87 Difference]: Start difference. First operand 1036 states and 1460 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:38,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:33:38,325 INFO L93 Difference]: Finished difference Result 2077 states and 2922 transitions. [2021-10-16 02:33:38,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:33:38,326 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 118 [2021-10-16 02:33:38,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:33:38,332 INFO L225 Difference]: With dead ends: 2077 [2021-10-16 02:33:38,332 INFO L226 Difference]: Without dead ends: 1049 [2021-10-16 02:33:38,333 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:33:38,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1049 states. [2021-10-16 02:33:38,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1049 to 1049. [2021-10-16 02:33:38,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1049 states, 1048 states have (on average 1.4055343511450382) internal successors, (1473), 1048 states have internal predecessors, (1473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:38,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1049 states to 1049 states and 1473 transitions. [2021-10-16 02:33:38,377 INFO L78 Accepts]: Start accepts. Automaton has 1049 states and 1473 transitions. Word has length 118 [2021-10-16 02:33:38,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:33:38,377 INFO L470 AbstractCegarLoop]: Abstraction has 1049 states and 1473 transitions. [2021-10-16 02:33:38,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:38,377 INFO L276 IsEmpty]: Start isEmpty. Operand 1049 states and 1473 transitions. [2021-10-16 02:33:38,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-16 02:33:38,380 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:33:38,380 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:33:38,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-16 02:33:38,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:33:38,592 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:33:38,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:33:38,593 INFO L82 PathProgramCache]: Analyzing trace with hash 855711090, now seen corresponding path program 1 times [2021-10-16 02:33:38,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:33:38,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [994603867] [2021-10-16 02:33:38,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:33:38,594 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:33:38,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:33:38,595 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:33:38,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-16 02:33:39,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:33:39,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:33:39,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:33:39,386 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-10-16 02:33:39,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:33:39,636 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-10-16 02:33:39,636 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:33:39,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [994603867] [2021-10-16 02:33:39,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [994603867] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:33:39,636 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:33:39,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 02:33:39,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754114661] [2021-10-16 02:33:39,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:33:39,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:33:39,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:33:39,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:33:39,638 INFO L87 Difference]: Start difference. First operand 1049 states and 1473 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:39,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:33:39,777 INFO L93 Difference]: Finished difference Result 2734 states and 3858 transitions. [2021-10-16 02:33:39,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:33:39,778 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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 120 [2021-10-16 02:33:39,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:33:39,788 INFO L225 Difference]: With dead ends: 2734 [2021-10-16 02:33:39,789 INFO L226 Difference]: Without dead ends: 1706 [2021-10-16 02:33:39,793 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:33:39,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1706 states. [2021-10-16 02:33:39,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1706 to 1704. [2021-10-16 02:33:39,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1704 states, 1703 states have (on average 1.4081033470346447) internal successors, (2398), 1703 states have internal predecessors, (2398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:39,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1704 states to 1704 states and 2398 transitions. [2021-10-16 02:33:39,870 INFO L78 Accepts]: Start accepts. Automaton has 1704 states and 2398 transitions. Word has length 120 [2021-10-16 02:33:39,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:33:39,870 INFO L470 AbstractCegarLoop]: Abstraction has 1704 states and 2398 transitions. [2021-10-16 02:33:39,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:39,871 INFO L276 IsEmpty]: Start isEmpty. Operand 1704 states and 2398 transitions. [2021-10-16 02:33:39,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-10-16 02:33:39,874 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:33:39,875 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:33:39,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-16 02:33:40,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:33:40,087 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:33:40,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:33:40,088 INFO L82 PathProgramCache]: Analyzing trace with hash -734348485, now seen corresponding path program 1 times [2021-10-16 02:33:40,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:33:40,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [154493214] [2021-10-16 02:33:40,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:33:40,089 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:33:40,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:33:40,090 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:33:40,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-16 02:33:40,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:33:40,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:33:40,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:33:40,922 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-16 02:33:40,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:33:41,190 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-16 02:33:41,190 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:33:41,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [154493214] [2021-10-16 02:33:41,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [154493214] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:33:41,191 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:33:41,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:33:41,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574747486] [2021-10-16 02:33:41,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:33:41,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:33:41,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:33:41,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:33:41,194 INFO L87 Difference]: Start difference. First operand 1704 states and 2398 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:41,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:33:41,291 INFO L93 Difference]: Finished difference Result 3387 states and 4771 transitions. [2021-10-16 02:33:41,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:33:41,291 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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 127 [2021-10-16 02:33:41,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:33:41,302 INFO L225 Difference]: With dead ends: 3387 [2021-10-16 02:33:41,302 INFO L226 Difference]: Without dead ends: 1704 [2021-10-16 02:33:41,305 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:33:41,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1704 states. [2021-10-16 02:33:41,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1704 to 1704. [2021-10-16 02:33:41,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1704 states, 1703 states have (on average 1.4028185554903112) internal successors, (2389), 1703 states have internal predecessors, (2389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:41,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1704 states to 1704 states and 2389 transitions. [2021-10-16 02:33:41,393 INFO L78 Accepts]: Start accepts. Automaton has 1704 states and 2389 transitions. Word has length 127 [2021-10-16 02:33:41,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:33:41,393 INFO L470 AbstractCegarLoop]: Abstraction has 1704 states and 2389 transitions. [2021-10-16 02:33:41,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:41,394 INFO L276 IsEmpty]: Start isEmpty. Operand 1704 states and 2389 transitions. [2021-10-16 02:33:41,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-10-16 02:33:41,398 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:33:41,398 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:33:41,415 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-16 02:33:41,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:33:41,611 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:33:41,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:33:41,612 INFO L82 PathProgramCache]: Analyzing trace with hash 297785048, now seen corresponding path program 1 times [2021-10-16 02:33:41,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:33:41,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2120739030] [2021-10-16 02:33:41,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:33:41,613 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:33:41,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:33:41,614 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:33:41,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-16 02:33:42,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:33:42,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:33:42,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:33:42,580 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-16 02:33:42,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:33:42,934 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-16 02:33:42,934 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:33:42,934 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2120739030] [2021-10-16 02:33:42,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2120739030] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:33:42,935 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:33:42,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:33:42,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503162751] [2021-10-16 02:33:42,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:33:42,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:33:42,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:33:42,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:33:42,936 INFO L87 Difference]: Start difference. First operand 1704 states and 2389 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:43,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:33:43,015 INFO L93 Difference]: Finished difference Result 3433 states and 4805 transitions. [2021-10-16 02:33:43,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:33:43,015 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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 159 [2021-10-16 02:33:43,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:33:43,025 INFO L225 Difference]: With dead ends: 3433 [2021-10-16 02:33:43,026 INFO L226 Difference]: Without dead ends: 1750 [2021-10-16 02:33:43,029 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:33:43,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1750 states. [2021-10-16 02:33:43,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1750 to 1750. [2021-10-16 02:33:43,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1750 states, 1749 states have (on average 1.3950829045168667) internal successors, (2440), 1749 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:43,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1750 states to 1750 states and 2440 transitions. [2021-10-16 02:33:43,126 INFO L78 Accepts]: Start accepts. Automaton has 1750 states and 2440 transitions. Word has length 159 [2021-10-16 02:33:43,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:33:43,127 INFO L470 AbstractCegarLoop]: Abstraction has 1750 states and 2440 transitions. [2021-10-16 02:33:43,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:43,128 INFO L276 IsEmpty]: Start isEmpty. Operand 1750 states and 2440 transitions. [2021-10-16 02:33:43,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-10-16 02:33:43,132 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:33:43,132 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:33:43,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-16 02:33:43,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:33:43,347 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:33:43,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:33:43,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1669592346, now seen corresponding path program 1 times [2021-10-16 02:33:43,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:33:43,349 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [616449726] [2021-10-16 02:33:43,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:33:43,349 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:33:43,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:33:43,350 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:33:43,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-16 02:33:44,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:33:44,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:33:44,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:33:44,376 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-10-16 02:33:44,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:33:44,653 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-10-16 02:33:44,653 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:33:44,653 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [616449726] [2021-10-16 02:33:44,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [616449726] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:33:44,653 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:33:44,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:33:44,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488592319] [2021-10-16 02:33:44,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:33:44,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:33:44,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:33:44,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:33:44,655 INFO L87 Difference]: Start difference. First operand 1750 states and 2440 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:44,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:33:44,865 INFO L93 Difference]: Finished difference Result 3634 states and 5135 transitions. [2021-10-16 02:33:44,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:33:44,865 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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 159 [2021-10-16 02:33:44,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:33:44,877 INFO L225 Difference]: With dead ends: 3634 [2021-10-16 02:33:44,877 INFO L226 Difference]: Without dead ends: 1905 [2021-10-16 02:33:44,880 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:33:44,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1905 states. [2021-10-16 02:33:44,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1905 to 1905. [2021-10-16 02:33:44,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1905 states, 1904 states have (on average 1.3760504201680672) internal successors, (2620), 1904 states have internal predecessors, (2620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:44,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1905 states to 1905 states and 2620 transitions. [2021-10-16 02:33:44,958 INFO L78 Accepts]: Start accepts. Automaton has 1905 states and 2620 transitions. Word has length 159 [2021-10-16 02:33:44,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:33:44,958 INFO L470 AbstractCegarLoop]: Abstraction has 1905 states and 2620 transitions. [2021-10-16 02:33:44,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:44,959 INFO L276 IsEmpty]: Start isEmpty. Operand 1905 states and 2620 transitions. [2021-10-16 02:33:44,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-10-16 02:33:44,964 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:33:44,964 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:33:44,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-16 02:33:45,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:33:45,177 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:33:45,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:33:45,178 INFO L82 PathProgramCache]: Analyzing trace with hash -67040907, now seen corresponding path program 1 times [2021-10-16 02:33:45,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:33:45,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [259784563] [2021-10-16 02:33:45,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:33:45,179 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:33:45,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:33:45,180 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:33:45,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-16 02:33:45,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:33:45,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:33:45,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:33:46,323 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-10-16 02:33:46,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:33:46,671 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-10-16 02:33:46,671 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:33:46,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [259784563] [2021-10-16 02:33:46,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [259784563] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:33:46,671 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:33:46,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 02:33:46,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850259552] [2021-10-16 02:33:46,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:33:46,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:33:46,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:33:46,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:33:46,673 INFO L87 Difference]: Start difference. First operand 1905 states and 2620 transitions. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:46,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:33:46,830 INFO L93 Difference]: Finished difference Result 4504 states and 6216 transitions. [2021-10-16 02:33:46,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:33:46,831 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 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 187 [2021-10-16 02:33:46,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:33:46,846 INFO L225 Difference]: With dead ends: 4504 [2021-10-16 02:33:46,846 INFO L226 Difference]: Without dead ends: 2620 [2021-10-16 02:33:46,849 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 370 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:33:46,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2620 states. [2021-10-16 02:33:46,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2620 to 2618. [2021-10-16 02:33:46,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2618 states, 2617 states have (on average 1.3798242262132212) internal successors, (3611), 2617 states have internal predecessors, (3611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:46,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2618 states to 2618 states and 3611 transitions. [2021-10-16 02:33:46,950 INFO L78 Accepts]: Start accepts. Automaton has 2618 states and 3611 transitions. Word has length 187 [2021-10-16 02:33:46,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:33:46,950 INFO L470 AbstractCegarLoop]: Abstraction has 2618 states and 3611 transitions. [2021-10-16 02:33:46,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:46,951 INFO L276 IsEmpty]: Start isEmpty. Operand 2618 states and 3611 transitions. [2021-10-16 02:33:46,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-10-16 02:33:46,956 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:33:46,957 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1] [2021-10-16 02:33:46,973 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-16 02:33:47,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:33:47,170 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:33:47,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:33:47,170 INFO L82 PathProgramCache]: Analyzing trace with hash 917057880, now seen corresponding path program 1 times [2021-10-16 02:33:47,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:33:47,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1234447963] [2021-10-16 02:33:47,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:33:47,171 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:33:47,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:33:47,172 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:33:47,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-16 02:33:47,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:33:47,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:33:47,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:33:48,394 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 326 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2021-10-16 02:33:48,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:33:48,902 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 326 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2021-10-16 02:33:48,903 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:33:48,903 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1234447963] [2021-10-16 02:33:48,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1234447963] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:33:48,903 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:33:48,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:33:48,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789355002] [2021-10-16 02:33:48,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:33:48,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:33:48,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:33:48,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:33:48,906 INFO L87 Difference]: Start difference. First operand 2618 states and 3611 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:49,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:33:49,100 INFO L93 Difference]: Finished difference Result 5279 states and 7296 transitions. [2021-10-16 02:33:49,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:33:49,100 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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 232 [2021-10-16 02:33:49,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:33:49,115 INFO L225 Difference]: With dead ends: 5279 [2021-10-16 02:33:49,115 INFO L226 Difference]: Without dead ends: 2682 [2021-10-16 02:33:49,119 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 461 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:33:49,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2682 states. [2021-10-16 02:33:49,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2682 to 2618. [2021-10-16 02:33:49,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2618 states, 2617 states have (on average 1.3316774933129538) internal successors, (3485), 2617 states have internal predecessors, (3485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:49,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2618 states to 2618 states and 3485 transitions. [2021-10-16 02:33:49,255 INFO L78 Accepts]: Start accepts. Automaton has 2618 states and 3485 transitions. Word has length 232 [2021-10-16 02:33:49,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:33:49,256 INFO L470 AbstractCegarLoop]: Abstraction has 2618 states and 3485 transitions. [2021-10-16 02:33:49,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:49,256 INFO L276 IsEmpty]: Start isEmpty. Operand 2618 states and 3485 transitions. [2021-10-16 02:33:49,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2021-10-16 02:33:49,265 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:33:49,265 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 6, 6, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1] [2021-10-16 02:33:49,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-16 02:33:49,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:33:49,479 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:33:49,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:33:49,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1823531945, now seen corresponding path program 1 times [2021-10-16 02:33:49,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:33:49,480 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [884423539] [2021-10-16 02:33:49,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:33:49,480 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:33:49,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:33:49,482 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:33:49,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-16 02:33:50,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:33:50,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:33:50,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:33:50,989 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 419 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2021-10-16 02:33:50,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:33:51,469 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 419 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2021-10-16 02:33:51,469 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:33:51,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [884423539] [2021-10-16 02:33:51,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [884423539] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:33:51,470 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:33:51,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:33:51,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146459337] [2021-10-16 02:33:51,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:33:51,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:33:51,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:33:51,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:33:51,472 INFO L87 Difference]: Start difference. First operand 2618 states and 3485 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:51,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:33:51,686 INFO L93 Difference]: Finished difference Result 5432 states and 7323 transitions. [2021-10-16 02:33:51,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:33:51,687 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 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 255 [2021-10-16 02:33:51,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:33:51,703 INFO L225 Difference]: With dead ends: 5432 [2021-10-16 02:33:51,703 INFO L226 Difference]: Without dead ends: 2835 [2021-10-16 02:33:51,706 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 508 GetRequests, 507 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:33:51,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2835 states. [2021-10-16 02:33:51,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2835 to 2821. [2021-10-16 02:33:51,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2821 states, 2820 states have (on average 1.3202127659574467) internal successors, (3723), 2820 states have internal predecessors, (3723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:51,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2821 states to 2821 states and 3723 transitions. [2021-10-16 02:33:51,820 INFO L78 Accepts]: Start accepts. Automaton has 2821 states and 3723 transitions. Word has length 255 [2021-10-16 02:33:51,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:33:51,821 INFO L470 AbstractCegarLoop]: Abstraction has 2821 states and 3723 transitions. [2021-10-16 02:33:51,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:51,821 INFO L276 IsEmpty]: Start isEmpty. Operand 2821 states and 3723 transitions. [2021-10-16 02:33:51,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2021-10-16 02:33:51,829 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:33:51,830 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 7, 7, 6, 6, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:33:51,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-16 02:33:52,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:33:52,050 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:33:52,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:33:52,050 INFO L82 PathProgramCache]: Analyzing trace with hash -791509653, now seen corresponding path program 1 times [2021-10-16 02:33:52,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:33:52,051 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1683608094] [2021-10-16 02:33:52,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:33:52,051 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:33:52,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:33:52,052 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:33:52,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-16 02:33:52,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:33:53,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:33:53,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:33:53,578 INFO L134 CoverageAnalysis]: Checked inductivity of 844 backedges. 592 proven. 26 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-10-16 02:33:53,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:33:54,121 INFO L134 CoverageAnalysis]: Checked inductivity of 844 backedges. 592 proven. 26 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-10-16 02:33:54,121 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:33:54,121 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1683608094] [2021-10-16 02:33:54,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1683608094] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:33:54,121 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [305154829] [2021-10-16 02:33:54,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:33:54,122 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:33:54,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:33:54,124 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:33:54,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-10-16 02:33:55,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:33:55,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:33:55,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:33:56,300 INFO L134 CoverageAnalysis]: Checked inductivity of 844 backedges. 488 proven. 0 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2021-10-16 02:33:56,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:33:57,003 INFO L134 CoverageAnalysis]: Checked inductivity of 844 backedges. 488 proven. 0 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2021-10-16 02:33:57,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [305154829] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:33:57,004 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-16 02:33:57,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4, 4] total 5 [2021-10-16 02:33:57,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624150174] [2021-10-16 02:33:57,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:33:57,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:33:57,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:33:57,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:33:57,006 INFO L87 Difference]: Start difference. First operand 2821 states and 3723 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:57,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:33:57,113 INFO L93 Difference]: Finished difference Result 7902 states and 10450 transitions. [2021-10-16 02:33:57,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:33:57,113 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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 289 [2021-10-16 02:33:57,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:33:57,163 INFO L225 Difference]: With dead ends: 7902 [2021-10-16 02:33:57,169 INFO L226 Difference]: Without dead ends: 5102 [2021-10-16 02:33:57,173 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1152 GetRequests, 1149 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.8ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:33:57,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5102 states. [2021-10-16 02:33:57,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5102 to 5100. [2021-10-16 02:33:57,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5100 states, 5099 states have (on average 1.3200627574034125) internal successors, (6731), 5099 states have internal predecessors, (6731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:57,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5100 states to 5100 states and 6731 transitions. [2021-10-16 02:33:57,368 INFO L78 Accepts]: Start accepts. Automaton has 5100 states and 6731 transitions. Word has length 289 [2021-10-16 02:33:57,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:33:57,368 INFO L470 AbstractCegarLoop]: Abstraction has 5100 states and 6731 transitions. [2021-10-16 02:33:57,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:57,369 INFO L276 IsEmpty]: Start isEmpty. Operand 5100 states and 6731 transitions. [2021-10-16 02:33:57,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2021-10-16 02:33:57,378 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:33:57,378 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 7, 7, 6, 6, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:33:57,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-16 02:33:57,596 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (21)] Ended with exit code 0 [2021-10-16 02:33:57,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 02:33:57,793 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:33:57,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:33:57,793 INFO L82 PathProgramCache]: Analyzing trace with hash -230809875, now seen corresponding path program 1 times [2021-10-16 02:33:57,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:33:57,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1765433484] [2021-10-16 02:33:57,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:33:57,794 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:33:57,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:33:57,795 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:33:57,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-16 02:33:59,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:33:59,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:33:59,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:33:59,533 INFO L134 CoverageAnalysis]: Checked inductivity of 844 backedges. 592 proven. 26 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-10-16 02:33:59,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:34:00,064 INFO L134 CoverageAnalysis]: Checked inductivity of 844 backedges. 592 proven. 26 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-10-16 02:34:00,064 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:34:00,066 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1765433484] [2021-10-16 02:34:00,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1765433484] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:34:00,066 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [673133629] [2021-10-16 02:34:00,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:34:00,066 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:34:00,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:34:00,067 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:34:00,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-10-16 02:34:01,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:34:01,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:34:01,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:34:02,509 INFO L134 CoverageAnalysis]: Checked inductivity of 844 backedges. 592 proven. 26 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-10-16 02:34:02,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:34:03,062 INFO L134 CoverageAnalysis]: Checked inductivity of 844 backedges. 592 proven. 26 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-10-16 02:34:03,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [673133629] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:34:03,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520108703] [2021-10-16 02:34:03,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:34:03,063 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:34:03,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:34:03,064 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:34:03,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-10-16 02:34:04,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:34:04,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:34:04,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:34:05,413 INFO L134 CoverageAnalysis]: Checked inductivity of 844 backedges. 592 proven. 26 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-10-16 02:34:05,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:34:05,951 INFO L134 CoverageAnalysis]: Checked inductivity of 844 backedges. 592 proven. 26 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-10-16 02:34:05,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520108703] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:34:05,951 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:34:05,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 4 [2021-10-16 02:34:05,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031341794] [2021-10-16 02:34:05,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:34:05,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:34:05,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:34:05,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:34:05,954 INFO L87 Difference]: Start difference. First operand 5100 states and 6731 transitions. Second operand has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:34:06,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:34:06,455 INFO L93 Difference]: Finished difference Result 15401 states and 20364 transitions. [2021-10-16 02:34:06,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:34:06,456 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 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 289 [2021-10-16 02:34:06,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:34:06,486 INFO L225 Difference]: With dead ends: 15401 [2021-10-16 02:34:06,486 INFO L226 Difference]: Without dead ends: 10322 [2021-10-16 02:34:06,494 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1730 GetRequests, 1727 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:34:06,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10322 states. [2021-10-16 02:34:06,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10322 to 6725. [2021-10-16 02:34:06,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6725 states, 6724 states have (on average 1.3343248066627007) internal successors, (8972), 6724 states have internal predecessors, (8972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:34:06,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6725 states to 6725 states and 8972 transitions. [2021-10-16 02:34:06,768 INFO L78 Accepts]: Start accepts. Automaton has 6725 states and 8972 transitions. Word has length 289 [2021-10-16 02:34:06,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:34:06,769 INFO L470 AbstractCegarLoop]: Abstraction has 6725 states and 8972 transitions. [2021-10-16 02:34:06,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:34:06,769 INFO L276 IsEmpty]: Start isEmpty. Operand 6725 states and 8972 transitions. [2021-10-16 02:34:06,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2021-10-16 02:34:06,780 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:34:06,781 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-16 02:34:06,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2021-10-16 02:34:07,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-10-16 02:34:07,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-16 02:34:07,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:34:07,387 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:34:07,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:34:07,388 INFO L82 PathProgramCache]: Analyzing trace with hash -947903949, now seen corresponding path program 1 times [2021-10-16 02:34:07,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:34:07,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [14590022] [2021-10-16 02:34:07,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:34:07,389 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:34:07,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:34:07,390 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:34:07,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-16 02:34:08,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:34:08,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:34:08,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:34:09,557 INFO L134 CoverageAnalysis]: Checked inductivity of 842 backedges. 629 proven. 26 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-10-16 02:34:09,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:34:10,144 INFO L134 CoverageAnalysis]: Checked inductivity of 842 backedges. 629 proven. 26 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-10-16 02:34:10,145 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:34:10,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [14590022] [2021-10-16 02:34:10,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [14590022] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:34:10,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1642575320] [2021-10-16 02:34:10,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:34:10,145 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:34:10,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:34:10,147 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:34:10,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2021-10-16 02:34:12,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:34:12,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:34:12,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:34:13,093 INFO L134 CoverageAnalysis]: Checked inductivity of 842 backedges. 629 proven. 26 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-10-16 02:34:13,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:34:13,623 INFO L134 CoverageAnalysis]: Checked inductivity of 842 backedges. 629 proven. 26 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-10-16 02:34:13,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1642575320] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:34:13,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250457005] [2021-10-16 02:34:13,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:34:13,623 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:34:13,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:34:13,624 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:34:13,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-10-16 02:34:15,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:34:15,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:34:15,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:34:16,474 INFO L134 CoverageAnalysis]: Checked inductivity of 842 backedges. 629 proven. 26 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-10-16 02:34:16,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:34:17,011 INFO L134 CoverageAnalysis]: Checked inductivity of 842 backedges. 629 proven. 26 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-10-16 02:34:17,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250457005] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:34:17,011 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:34:17,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 4 [2021-10-16 02:34:17,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040018335] [2021-10-16 02:34:17,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:34:17,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:34:17,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:34:17,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:34:17,014 INFO L87 Difference]: Start difference. First operand 6725 states and 8972 transitions. Second operand has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:34:17,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:34:17,487 INFO L93 Difference]: Finished difference Result 17506 states and 23694 transitions. [2021-10-16 02:34:17,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:34:17,488 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 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 298 [2021-10-16 02:34:17,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:34:17,511 INFO L225 Difference]: With dead ends: 17506 [2021-10-16 02:34:17,511 INFO L226 Difference]: Without dead ends: 10802 [2021-10-16 02:34:17,518 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1784 GetRequests, 1781 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:34:17,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10802 states. [2021-10-16 02:34:17,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10802 to 7633. [2021-10-16 02:34:17,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7633 states, 7632 states have (on average 1.315251572327044) internal successors, (10038), 7632 states have internal predecessors, (10038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:34:17,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7633 states to 7633 states and 10038 transitions. [2021-10-16 02:34:17,877 INFO L78 Accepts]: Start accepts. Automaton has 7633 states and 10038 transitions. Word has length 298 [2021-10-16 02:34:17,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:34:17,879 INFO L470 AbstractCegarLoop]: Abstraction has 7633 states and 10038 transitions. [2021-10-16 02:34:17,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:34:17,879 INFO L276 IsEmpty]: Start isEmpty. Operand 7633 states and 10038 transitions. [2021-10-16 02:34:17,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2021-10-16 02:34:17,899 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:34:17,899 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-16 02:34:17,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (26)] Forceful destruction successful, exit code 0 [2021-10-16 02:34:18,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-16 02:34:18,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-10-16 02:34:18,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:34:18,500 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:34:18,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:34:18,501 INFO L82 PathProgramCache]: Analyzing trace with hash -80722317, now seen corresponding path program 1 times [2021-10-16 02:34:18,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:34:18,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [917120435] [2021-10-16 02:34:18,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:34:18,502 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:34:18,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:34:18,503 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:34:18,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-16 02:34:20,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:34:20,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:34:20,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:34:21,162 INFO L134 CoverageAnalysis]: Checked inductivity of 842 backedges. 480 proven. 0 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2021-10-16 02:34:21,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:34:21,805 INFO L134 CoverageAnalysis]: Checked inductivity of 842 backedges. 480 proven. 0 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2021-10-16 02:34:21,805 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:34:21,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [917120435] [2021-10-16 02:34:21,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [917120435] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:34:21,806 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:34:21,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:34:21,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571037282] [2021-10-16 02:34:21,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:34:21,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:34:21,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:34:21,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:34:21,808 INFO L87 Difference]: Start difference. First operand 7633 states and 10038 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:34:21,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:34:21,949 INFO L93 Difference]: Finished difference Result 11500 states and 15126 transitions. [2021-10-16 02:34:21,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:34:21,952 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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 298 [2021-10-16 02:34:21,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:34:21,966 INFO L225 Difference]: With dead ends: 11500 [2021-10-16 02:34:21,966 INFO L226 Difference]: Without dead ends: 7661 [2021-10-16 02:34:21,972 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 594 GetRequests, 593 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:34:21,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7661 states. [2021-10-16 02:34:22,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7661 to 7659. [2021-10-16 02:34:22,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7659 states, 7658 states have (on average 1.3114390180203708) internal successors, (10043), 7658 states have internal predecessors, (10043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:34:22,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7659 states to 7659 states and 10043 transitions. [2021-10-16 02:34:22,240 INFO L78 Accepts]: Start accepts. Automaton has 7659 states and 10043 transitions. Word has length 298 [2021-10-16 02:34:22,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:34:22,241 INFO L470 AbstractCegarLoop]: Abstraction has 7659 states and 10043 transitions. [2021-10-16 02:34:22,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:34:22,241 INFO L276 IsEmpty]: Start isEmpty. Operand 7659 states and 10043 transitions. [2021-10-16 02:34:22,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2021-10-16 02:34:22,250 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:34:22,250 INFO L512 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 8, 8, 7, 7, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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] [2021-10-16 02:34:22,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-10-16 02:34:22,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:34:22,464 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:34:22,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:34:22,464 INFO L82 PathProgramCache]: Analyzing trace with hash 575008099, now seen corresponding path program 1 times [2021-10-16 02:34:22,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:34:22,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2014853643] [2021-10-16 02:34:22,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:34:22,465 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:34:22,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:34:22,466 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:34:22,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-16 02:34:24,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:34:24,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:34:24,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:34:25,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1059 backedges. 603 proven. 0 refuted. 0 times theorem prover too weak. 456 trivial. 0 not checked. [2021-10-16 02:34:25,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:34:25,666 INFO L134 CoverageAnalysis]: Checked inductivity of 1059 backedges. 603 proven. 0 refuted. 0 times theorem prover too weak. 456 trivial. 0 not checked. [2021-10-16 02:34:25,666 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:34:25,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2014853643] [2021-10-16 02:34:25,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2014853643] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:34:25,667 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:34:25,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:34:25,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493971234] [2021-10-16 02:34:25,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:34:25,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:34:25,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:34:25,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:34:25,669 INFO L87 Difference]: Start difference. First operand 7659 states and 10043 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:34:25,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:34:25,877 INFO L93 Difference]: Finished difference Result 15889 states and 21116 transitions. [2021-10-16 02:34:25,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:34:25,878 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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 319 [2021-10-16 02:34:25,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:34:25,897 INFO L225 Difference]: With dead ends: 15889 [2021-10-16 02:34:25,897 INFO L226 Difference]: Without dead ends: 8277 [2021-10-16 02:34:25,907 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 636 GetRequests, 635 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:34:25,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8277 states. [2021-10-16 02:34:26,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8277 to 7899. [2021-10-16 02:34:26,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7899 states, 7898 states have (on average 1.3095720435553304) internal successors, (10343), 7898 states have internal predecessors, (10343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:34:26,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7899 states to 7899 states and 10343 transitions. [2021-10-16 02:34:26,229 INFO L78 Accepts]: Start accepts. Automaton has 7899 states and 10343 transitions. Word has length 319 [2021-10-16 02:34:26,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:34:26,231 INFO L470 AbstractCegarLoop]: Abstraction has 7899 states and 10343 transitions. [2021-10-16 02:34:26,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:34:26,232 INFO L276 IsEmpty]: Start isEmpty. Operand 7899 states and 10343 transitions. [2021-10-16 02:34:26,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2021-10-16 02:34:26,250 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:34:26,251 INFO L512 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 8, 8, 7, 7, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1] [2021-10-16 02:34:26,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-16 02:34:26,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:34:26,469 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:34:26,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:34:26,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1646229521, now seen corresponding path program 1 times [2021-10-16 02:34:26,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:34:26,470 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1897516627] [2021-10-16 02:34:26,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:34:26,471 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:34:26,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:34:26,472 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:34:26,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-16 02:34:28,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:34:28,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:34:28,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:34:29,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1059 backedges. 635 proven. 0 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2021-10-16 02:34:29,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:34:29,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1059 backedges. 635 proven. 0 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2021-10-16 02:34:29,931 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:34:29,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1897516627] [2021-10-16 02:34:29,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1897516627] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:34:29,932 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:34:29,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:34:29,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652804226] [2021-10-16 02:34:29,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:34:29,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:34:29,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:34:29,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:34:29,933 INFO L87 Difference]: Start difference. First operand 7899 states and 10343 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:34:30,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:34:30,243 INFO L93 Difference]: Finished difference Result 16795 states and 22485 transitions. [2021-10-16 02:34:30,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:34:30,244 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 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 320 [2021-10-16 02:34:30,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:34:30,258 INFO L225 Difference]: With dead ends: 16795 [2021-10-16 02:34:30,259 INFO L226 Difference]: Without dead ends: 8943 [2021-10-16 02:34:30,269 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 638 GetRequests, 637 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:34:30,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8943 states. [2021-10-16 02:34:30,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8943 to 8885. [2021-10-16 02:34:30,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8885 states, 8884 states have (on average 1.2915353444394417) internal successors, (11474), 8884 states have internal predecessors, (11474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:34:30,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8885 states to 8885 states and 11474 transitions. [2021-10-16 02:34:30,561 INFO L78 Accepts]: Start accepts. Automaton has 8885 states and 11474 transitions. Word has length 320 [2021-10-16 02:34:30,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:34:30,562 INFO L470 AbstractCegarLoop]: Abstraction has 8885 states and 11474 transitions. [2021-10-16 02:34:30,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:34:30,562 INFO L276 IsEmpty]: Start isEmpty. Operand 8885 states and 11474 transitions. [2021-10-16 02:34:30,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2021-10-16 02:34:30,569 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:34:30,570 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-16 02:34:30,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-10-16 02:34:30,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:34:30,785 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:34:30,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:34:30,786 INFO L82 PathProgramCache]: Analyzing trace with hash -1878786478, now seen corresponding path program 1 times [2021-10-16 02:34:30,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:34:30,786 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1510316320] [2021-10-16 02:34:30,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:34:30,786 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:34:30,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:34:30,787 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:34:30,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-16 02:34:33,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:34:33,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:34:33,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:34:33,718 INFO L134 CoverageAnalysis]: Checked inductivity of 1088 backedges. 705 proven. 0 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked. [2021-10-16 02:34:33,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:34:34,288 INFO L134 CoverageAnalysis]: Checked inductivity of 1088 backedges. 705 proven. 0 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked. [2021-10-16 02:34:34,288 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:34:34,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1510316320] [2021-10-16 02:34:34,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1510316320] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:34:34,288 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:34:34,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 02:34:34,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210628441] [2021-10-16 02:34:34,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:34:34,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:34:34,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:34:34,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:34:34,290 INFO L87 Difference]: Start difference. First operand 8885 states and 11474 transitions. Second operand has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:34:34,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:34:34,597 INFO L93 Difference]: Finished difference Result 14220 states and 18735 transitions. [2021-10-16 02:34:34,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:34:34,598 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 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 336 [2021-10-16 02:34:34,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:34:34,604 INFO L225 Difference]: With dead ends: 14220 [2021-10-16 02:34:34,604 INFO L226 Difference]: Without dead ends: 4609 [2021-10-16 02:34:34,612 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 670 GetRequests, 668 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:34:34,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4609 states. [2021-10-16 02:34:34,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4609 to 4546. [2021-10-16 02:34:34,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4546 states, 4545 states have (on average 1.304070407040704) internal successors, (5927), 4545 states have internal predecessors, (5927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:34:34,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4546 states to 4546 states and 5927 transitions. [2021-10-16 02:34:34,810 INFO L78 Accepts]: Start accepts. Automaton has 4546 states and 5927 transitions. Word has length 336 [2021-10-16 02:34:34,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:34:34,810 INFO L470 AbstractCegarLoop]: Abstraction has 4546 states and 5927 transitions. [2021-10-16 02:34:34,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:34:34,811 INFO L276 IsEmpty]: Start isEmpty. Operand 4546 states and 5927 transitions. [2021-10-16 02:34:34,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2021-10-16 02:34:34,818 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:34:34,818 INFO L512 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 9, 9, 8, 8, 6, 6, 6, 6, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1] [2021-10-16 02:34:34,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-10-16 02:34:35,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:34:35,038 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:34:35,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:34:35,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1933488823, now seen corresponding path program 1 times [2021-10-16 02:34:35,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:34:35,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1114488452] [2021-10-16 02:34:35,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:34:35,040 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:34:35,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:34:35,041 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:34:35,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-10-16 02:34:37,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:34:37,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:34:37,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:34:38,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1306 backedges. 743 proven. 0 refuted. 0 times theorem prover too weak. 563 trivial. 0 not checked. [2021-10-16 02:34:38,143 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:34:38,714 INFO L134 CoverageAnalysis]: Checked inductivity of 1306 backedges. 743 proven. 0 refuted. 0 times theorem prover too weak. 563 trivial. 0 not checked. [2021-10-16 02:34:38,714 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:34:38,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1114488452] [2021-10-16 02:34:38,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1114488452] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:34:38,714 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:34:38,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:34:38,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138999188] [2021-10-16 02:34:38,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:34:38,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:34:38,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:34:38,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:34:38,716 INFO L87 Difference]: Start difference. First operand 4546 states and 5927 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:34:38,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:34:38,882 INFO L93 Difference]: Finished difference Result 8807 states and 11513 transitions. [2021-10-16 02:34:38,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:34:38,883 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 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 352 [2021-10-16 02:34:38,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:34:38,886 INFO L225 Difference]: With dead ends: 8807 [2021-10-16 02:34:38,886 INFO L226 Difference]: Without dead ends: 4282 [2021-10-16 02:34:38,889 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 702 GetRequests, 701 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:34:38,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4282 states. [2021-10-16 02:34:39,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4282 to 3897. [2021-10-16 02:34:39,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3897 states, 3896 states have (on average 1.2546201232032854) internal successors, (4888), 3896 states have internal predecessors, (4888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:34:39,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3897 states to 3897 states and 4888 transitions. [2021-10-16 02:34:39,025 INFO L78 Accepts]: Start accepts. Automaton has 3897 states and 4888 transitions. Word has length 352 [2021-10-16 02:34:39,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:34:39,026 INFO L470 AbstractCegarLoop]: Abstraction has 3897 states and 4888 transitions. [2021-10-16 02:34:39,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:34:39,026 INFO L276 IsEmpty]: Start isEmpty. Operand 3897 states and 4888 transitions. [2021-10-16 02:34:39,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2021-10-16 02:34:39,032 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:34:39,032 INFO L512 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 12, 12, 11, 11, 10, 10, 8, 8, 8, 8, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:34:39,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-10-16 02:34:39,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:34:39,252 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:34:39,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:34:39,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1769991755, now seen corresponding path program 1 times [2021-10-16 02:34:39,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:34:39,253 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1846670713] [2021-10-16 02:34:39,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:34:39,253 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:34:39,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:34:39,254 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:34:39,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-10-16 02:34:41,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:34:41,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:34:41,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:34:42,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1898 backedges. 518 proven. 22 refuted. 0 times theorem prover too weak. 1358 trivial. 0 not checked. [2021-10-16 02:34:42,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:34:43,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1898 backedges. 518 proven. 22 refuted. 0 times theorem prover too weak. 1358 trivial. 0 not checked. [2021-10-16 02:34:43,264 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:34:43,264 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1846670713] [2021-10-16 02:34:43,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1846670713] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:34:43,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1119185108] [2021-10-16 02:34:43,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:34:43,265 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:34:43,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:34:43,266 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:34:43,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (34)] Waiting until timeout for monitored process [2021-10-16 02:34:47,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:34:47,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:34:47,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:34:48,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1898 backedges. 518 proven. 22 refuted. 0 times theorem prover too weak. 1358 trivial. 0 not checked. [2021-10-16 02:34:48,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:34:48,631 INFO L134 CoverageAnalysis]: Checked inductivity of 1898 backedges. 518 proven. 22 refuted. 0 times theorem prover too weak. 1358 trivial. 0 not checked. [2021-10-16 02:34:48,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1119185108] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:34:48,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443944019] [2021-10-16 02:34:48,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:34:48,632 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:34:48,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:34:48,632 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:34:48,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-10-16 02:34:52,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:34:52,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:34:52,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:34:53,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1898 backedges. 518 proven. 22 refuted. 0 times theorem prover too weak. 1358 trivial. 0 not checked. [2021-10-16 02:34:53,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:34:53,643 INFO L134 CoverageAnalysis]: Checked inductivity of 1898 backedges. 518 proven. 22 refuted. 0 times theorem prover too weak. 1358 trivial. 0 not checked. [2021-10-16 02:34:53,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443944019] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:34:53,643 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:34:53,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 6 [2021-10-16 02:34:53,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280684930] [2021-10-16 02:34:53,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:34:53,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:34:53,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:34:53,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:34:53,646 INFO L87 Difference]: Start difference. First operand 3897 states and 4888 transitions. Second operand has 6 states, 6 states have (on average 36.166666666666664) internal successors, (217), 6 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:34:54,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:34:54,047 INFO L93 Difference]: Finished difference Result 5857 states and 7298 transitions. [2021-10-16 02:34:54,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 02:34:54,048 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 36.166666666666664) internal successors, (217), 6 states have internal predecessors, (217), 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 422 [2021-10-16 02:34:54,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:34:54,049 INFO L225 Difference]: With dead ends: 5857 [2021-10-16 02:34:54,049 INFO L226 Difference]: Without dead ends: 0 [2021-10-16 02:34:54,051 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2532 GetRequests, 2525 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 28.7ms TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-16 02:34:54,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-16 02:34:54,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-16 02:34:54,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:34:54,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-16 02:34:54,053 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 422 [2021-10-16 02:34:54,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:34:54,053 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-16 02:34:54,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.166666666666664) internal successors, (217), 6 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:34:54,054 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-16 02:34:54,054 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-16 02:34:54,056 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:34:54,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-10-16 02:34:54,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-10-16 02:34:54,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (34)] Forceful destruction successful, exit code 0 [2021-10-16 02:34:54,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 02:34:54,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-16 02:34:54,684 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:34:54,719 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:34:54,842 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:34:54,843 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:34:54,924 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:34:54,972 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:34:54,992 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:34:55,723 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:34:55,725 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:34:55,746 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:34:56,293 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:34:56,294 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:34:56,296 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:34:56,320 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:34:56,335 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:34:56,335 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:34:56,350 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:34:56,361 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:34:56,380 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:34:56,404 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:34:56,405 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:34:56,406 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:34:56,443 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:34:56,474 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:34:56,501 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:34:56,524 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:34:56,545 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:34:56,546 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:35:02,249 INFO L857 garLoopResultBuilder]: For program point L498(lines 498 500) no Hoare annotation was computed. [2021-10-16 02:35:02,249 INFO L853 garLoopResultBuilder]: At program point L201(lines 197 578) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8545 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse4 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8544 32)))) (.cse1 (not (= (_ bv8544 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse2 (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse3 (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (or (and .cse0 .cse1 (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse2 (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8640 32)) (not .cse3)) (and .cse0 .cse4 .cse1 .cse2 .cse3 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (and .cse0 .cse4 .cse1 .cse2 .cse3 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv7 32))) (and .cse0 .cse4 .cse1 .cse2 (= (_ bv6 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse3))) [2021-10-16 02:35:02,249 INFO L853 garLoopResultBuilder]: At program point L168(lines 164 589) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (or (and .cse0 (= (_ bv6 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse1) (and .cse0 .cse1 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv7 32))) (and .cse0 .cse1 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)))) [2021-10-16 02:35:02,250 INFO L853 garLoopResultBuilder]: At program point L135(lines 134 599) the Hoare annotation is: (and (not (= (_ bv8545 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv8544 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) [2021-10-16 02:35:02,250 INFO L857 garLoopResultBuilder]: For program point L102(lines 102 104) no Hoare annotation was computed. [2021-10-16 02:35:02,250 INFO L857 garLoopResultBuilder]: For program point L631(lines 631 633) no Hoare annotation was computed. [2021-10-16 02:35:02,250 INFO L857 garLoopResultBuilder]: For program point L631-2(lines 631 633) no Hoare annotation was computed. [2021-10-16 02:35:02,250 INFO L857 garLoopResultBuilder]: For program point L532(lines 532 535) no Hoare annotation was computed. [2021-10-16 02:35:02,250 INFO L857 garLoopResultBuilder]: For program point L367(lines 367 369) no Hoare annotation was computed. [2021-10-16 02:35:02,251 INFO L857 garLoopResultBuilder]: For program point L367-2(lines 364 373) no Hoare annotation was computed. [2021-10-16 02:35:02,251 INFO L857 garLoopResultBuilder]: For program point L467(lines 467 469) no Hoare annotation was computed. [2021-10-16 02:35:02,251 INFO L857 garLoopResultBuilder]: For program point L335(lines 335 339) no Hoare annotation was computed. [2021-10-16 02:35:02,251 INFO L857 garLoopResultBuilder]: For program point L335-2(lines 219 569) no Hoare annotation was computed. [2021-10-16 02:35:02,251 INFO L857 garLoopResultBuilder]: For program point L203(lines 203 576) no Hoare annotation was computed. [2021-10-16 02:35:02,251 INFO L857 garLoopResultBuilder]: For program point L170(lines 170 587) no Hoare annotation was computed. [2021-10-16 02:35:02,252 INFO L857 garLoopResultBuilder]: For program point L137(lines 137 598) no Hoare annotation was computed. [2021-10-16 02:35:02,252 INFO L857 garLoopResultBuilder]: For program point L501(lines 501 505) no Hoare annotation was computed. [2021-10-16 02:35:02,252 INFO L857 garLoopResultBuilder]: For program point L501-2(lines 501 505) no Hoare annotation was computed. [2021-10-16 02:35:02,252 INFO L853 garLoopResultBuilder]: At program point L402(lines 393 428) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (or (and .cse0 (= (_ bv6 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse1) (and .cse0 .cse1 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv7 32))) (and .cse0 .cse1 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)))) [2021-10-16 02:35:02,252 INFO L857 garLoopResultBuilder]: For program point L270(lines 270 272) no Hoare annotation was computed. [2021-10-16 02:35:02,253 INFO L857 garLoopResultBuilder]: For program point L237(lines 237 248) no Hoare annotation was computed. [2021-10-16 02:35:02,253 INFO L857 garLoopResultBuilder]: For program point L237-2(lines 219 569) no Hoare annotation was computed. [2021-10-16 02:35:02,254 INFO L857 garLoopResultBuilder]: For program point L304(lines 304 308) no Hoare annotation was computed. [2021-10-16 02:35:02,254 INFO L857 garLoopResultBuilder]: For program point L304-2(lines 304 308) no Hoare annotation was computed. [2021-10-16 02:35:02,254 INFO L857 garLoopResultBuilder]: For program point L239(lines 239 242) no Hoare annotation was computed. [2021-10-16 02:35:02,254 INFO L857 garLoopResultBuilder]: For program point L206(lines 206 575) no Hoare annotation was computed. [2021-10-16 02:35:02,254 INFO L857 garLoopResultBuilder]: For program point L173(lines 173 586) no Hoare annotation was computed. [2021-10-16 02:35:02,255 INFO L857 garLoopResultBuilder]: For program point L140(lines 140 597) no Hoare annotation was computed. [2021-10-16 02:35:02,255 INFO L860 garLoopResultBuilder]: At program point L636(lines 22 638) the Hoare annotation is: true [2021-10-16 02:35:02,256 INFO L853 garLoopResultBuilder]: At program point L570(lines 110 625) the Hoare annotation is: (let ((.cse2 (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (let ((.cse6 (not (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv5 32)))) (.cse10 (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse4 (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse19 (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse18 (= (_ bv8608 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse7 (= (_ bv8448 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse12 (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse16 (= (_ bv8528 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse8 (= (_ bv8512 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse15 (= (_ bv8496 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse1 (= (_ bv8466 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse11 (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0)) (.cse17 (= (_ bv8592 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse3 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv7 32))) (.cse0 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8544 32)))) (.cse5 (= (_ bv6 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse20 (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse22 (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse21 (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8640 32))) (.cse14 (not .cse2)) (.cse13 (= (_ bv8560 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse23 (= (_ bv8544 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse9 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse0 .cse5 .cse2) (and .cse6 (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) .cse7 .cse2) (and .cse8 .cse2 .cse9) (and .cse10 .cse6 .cse0 .cse2) (and .cse11 .cse12 .cse5 .cse2) (and .cse13 .cse2 .cse3) (and .cse11 .cse7 .cse5 .cse2) (and .cse10 (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse14) (and .cse15 .cse0 .cse2 .cse3) (and .cse4 .cse0 .cse2 .cse3) (and .cse16 .cse5 .cse2) (and .cse11 .cse2 .cse17 .cse9) (and .cse0 .cse5 .cse2 .cse18) (and .cse13 .cse5 .cse2) (and .cse19 .cse20 .cse21) (and .cse4 .cse0 .cse9) (and .cse4 .cse14 .cse9) (and .cse0 .cse16 .cse2 .cse3) (and .cse11 .cse7 .cse2 .cse9) (and .cse19 .cse2) (and .cse11 .cse2 .cse18 .cse3) (and .cse15 .cse0 .cse2 .cse9) (and .cse11 .cse2 .cse18 .cse9) (and .cse11 .cse7 .cse2 .cse3) (and .cse0 .cse8 .cse5 .cse2) (and .cse0 .cse1 .cse5 .cse2) (and .cse11 .cse12 .cse2 .cse9) (and .cse0 .cse5 .cse2 .cse17) (and .cse20 .cse7 .cse21 .cse14) (and .cse11 .cse12 .cse2 .cse3) (and .cse16 .cse2 .cse9) (and .cse0 .cse22 .cse2 .cse9) (and .cse0 .cse8 .cse2 .cse3) (and .cse23 .cse2 .cse3) (and .cse23 .cse5 .cse2) (and .cse15 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv1 32))) (and .cse0 .cse22 .cse2 .cse3) (and .cse15 .cse0 .cse5 .cse2) (and .cse0 .cse1 .cse2 .cse9) (and .cse11 .cse2 .cse17 .cse3) (and .cse0 .cse22 .cse5 .cse2) (and .cse20 .cse22 .cse21 .cse14) (and .cse13 .cse2 .cse9) (and .cse23 .cse2 .cse9)))) [2021-10-16 02:35:02,257 INFO L857 garLoopResultBuilder]: For program point L438(lines 438 440) no Hoare annotation was computed. [2021-10-16 02:35:02,257 INFO L857 garLoopResultBuilder]: For program point L405(lines 405 426) no Hoare annotation was computed. [2021-10-16 02:35:02,257 INFO L853 garLoopResultBuilder]: At program point L207(lines 203 576) the Hoare annotation is: (let ((.cse3 (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) (.cse0 (not (= (_ bv8545 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8544 32)))) (.cse2 (not (= (_ bv8544 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse4 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0))) (or (and .cse0 .cse1 .cse2 .cse3 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv7 32))) (and .cse0 .cse1 .cse2 (= (_ bv6 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse3) (and .cse0 .cse2 (not .cse3) .cse4) (and .cse0 .cse1 .cse2 .cse4))) [2021-10-16 02:35:02,257 INFO L853 garLoopResultBuilder]: At program point L174(lines 170 587) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8545 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8544 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse2 (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse3 (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (or (and .cse0 .cse1 .cse2 .cse3 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (and .cse0 .cse1 .cse2 .cse3 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv7 32))) (and .cse0 .cse1 .cse2 (= (_ bv6 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse3))) [2021-10-16 02:35:02,258 INFO L857 garLoopResultBuilder]: For program point L406(lines 406 412) no Hoare annotation was computed. [2021-10-16 02:35:02,258 INFO L857 garLoopResultBuilder]: For program point L209(lines 209 574) no Hoare annotation was computed. [2021-10-16 02:35:02,258 INFO L857 garLoopResultBuilder]: For program point L176(lines 176 585) no Hoare annotation was computed. [2021-10-16 02:35:02,258 INFO L857 garLoopResultBuilder]: For program point L143(lines 143 596) no Hoare annotation was computed. [2021-10-16 02:35:02,258 INFO L853 garLoopResultBuilder]: At program point L110-2(lines 110 625) the Hoare annotation is: (let ((.cse2 (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (let ((.cse6 (not (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv5 32)))) (.cse10 (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse4 (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse19 (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse18 (= (_ bv8608 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse7 (= (_ bv8448 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse12 (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse16 (= (_ bv8528 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse8 (= (_ bv8512 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse15 (= (_ bv8496 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse1 (= (_ bv8466 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse11 (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0)) (.cse17 (= (_ bv8592 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse3 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv7 32))) (.cse0 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8544 32)))) (.cse5 (= (_ bv6 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse20 (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse22 (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse21 (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8640 32))) (.cse14 (not .cse2)) (.cse13 (= (_ bv8560 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse23 (= (_ bv8544 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse9 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse0 .cse5 .cse2) (and .cse6 (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) .cse7 .cse2) (and .cse8 .cse2 .cse9) (and .cse10 .cse6 .cse0 .cse2) (and .cse11 .cse12 .cse5 .cse2) (and .cse13 .cse2 .cse3) (and .cse11 .cse7 .cse5 .cse2) (and .cse10 (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse14) (and .cse15 .cse0 .cse2 .cse3) (and .cse4 .cse0 .cse2 .cse3) (and .cse16 .cse5 .cse2) (and .cse11 .cse2 .cse17 .cse9) (and .cse0 .cse5 .cse2 .cse18) (and .cse13 .cse5 .cse2) (and .cse19 .cse20 .cse21) (and .cse4 .cse0 .cse9) (and .cse4 .cse14 .cse9) (and .cse0 .cse16 .cse2 .cse3) (and .cse11 .cse7 .cse2 .cse9) (and .cse19 .cse2) (and .cse11 .cse2 .cse18 .cse3) (and .cse15 .cse0 .cse2 .cse9) (and .cse11 .cse2 .cse18 .cse9) (and .cse11 .cse7 .cse2 .cse3) (and .cse0 .cse8 .cse5 .cse2) (and .cse0 .cse1 .cse5 .cse2) (and .cse11 .cse12 .cse2 .cse9) (and .cse0 .cse5 .cse2 .cse17) (and .cse20 .cse7 .cse21 .cse14) (and .cse11 .cse12 .cse2 .cse3) (and .cse16 .cse2 .cse9) (and .cse0 .cse22 .cse2 .cse9) (and .cse0 .cse8 .cse2 .cse3) (and .cse23 .cse2 .cse3) (and .cse23 .cse5 .cse2) (and .cse15 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv1 32))) (and .cse0 .cse22 .cse2 .cse3) (and .cse15 .cse0 .cse5 .cse2) (and .cse0 .cse1 .cse2 .cse9) (and .cse11 .cse2 .cse17 .cse3) (and .cse0 .cse22 .cse5 .cse2) (and (= (_ bv8464 32) ULTIMATE.start_ssl3_accept_~s__state~0) (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv0 32))) (and .cse20 .cse22 .cse21 .cse14) (and .cse13 .cse2 .cse9) (and .cse23 .cse2 .cse9)))) [2021-10-16 02:35:02,259 INFO L857 garLoopResultBuilder]: For program point L540(lines 540 542) no Hoare annotation was computed. [2021-10-16 02:35:02,259 INFO L857 garLoopResultBuilder]: For program point L540-2(lines 219 569) no Hoare annotation was computed. [2021-10-16 02:35:02,259 INFO L857 garLoopResultBuilder]: For program point L243(lines 243 246) no Hoare annotation was computed. [2021-10-16 02:35:02,259 INFO L853 garLoopResultBuilder]: At program point L177(lines 176 585) the Hoare annotation is: (let ((.cse2 (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0)) (.cse0 (= (_ bv8448 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse1 (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (or (and (not (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv5 32))) (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) .cse0 .cse1) (and .cse2 .cse0 (= (_ bv6 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse1) (and .cse2 .cse0 .cse1 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (and .cse2 .cse0 .cse1 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv7 32))) (and (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse0 (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8640 32)) (not .cse1)))) [2021-10-16 02:35:02,259 INFO L853 garLoopResultBuilder]: At program point L144(lines 137 598) the Hoare annotation is: (let ((.cse1 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8544 32)))) (.cse4 (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) (.cse0 (not (= (_ bv8545 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse2 (not (= (_ bv8544 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse3 (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (and .cse0 .cse1 .cse2 .cse3 .cse4 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv7 32))) (and .cse0 .cse1 .cse2 .cse3 (= (_ bv6 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse4) (and .cse0 .cse2 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv0 32)) .cse3))) [2021-10-16 02:35:02,260 INFO L857 garLoopResultBuilder]: For program point L111(line 111) no Hoare annotation was computed. [2021-10-16 02:35:02,260 INFO L857 garLoopResultBuilder]: For program point L607(lines 607 623) no Hoare annotation was computed. [2021-10-16 02:35:02,260 INFO L857 garLoopResultBuilder]: For program point L608(lines 608 622) no Hoare annotation was computed. [2021-10-16 02:35:02,260 INFO L857 garLoopResultBuilder]: For program point L344(lines 344 385) no Hoare annotation was computed. [2021-10-16 02:35:02,260 INFO L857 garLoopResultBuilder]: For program point L212(lines 212 573) no Hoare annotation was computed. [2021-10-16 02:35:02,260 INFO L857 garLoopResultBuilder]: For program point L179(lines 179 584) no Hoare annotation was computed. [2021-10-16 02:35:02,260 INFO L857 garLoopResultBuilder]: For program point L146(lines 146 595) no Hoare annotation was computed. [2021-10-16 02:35:02,261 INFO L857 garLoopResultBuilder]: For program point L113(lines 113 606) no Hoare annotation was computed. [2021-10-16 02:35:02,261 INFO L857 garLoopResultBuilder]: For program point L609(lines 609 614) no Hoare annotation was computed. [2021-10-16 02:35:02,261 INFO L857 garLoopResultBuilder]: For program point L609-2(lines 608 622) no Hoare annotation was computed. [2021-10-16 02:35:02,262 INFO L857 garLoopResultBuilder]: For program point L477(lines 477 479) no Hoare annotation was computed. [2021-10-16 02:35:02,262 INFO L853 garLoopResultBuilder]: At program point L213(lines 209 574) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8545 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8544 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse2 (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse3 (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (or (and (not (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv5 32))) .cse0 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8544 32))) .cse1 .cse2 .cse3) (and .cse0 .cse1 (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse2 (not .cse3)))) [2021-10-16 02:35:02,262 INFO L853 garLoopResultBuilder]: At program point L114(lines 113 606) the Hoare annotation is: false [2021-10-16 02:35:02,262 INFO L857 garLoopResultBuilder]: For program point L511(lines 511 514) no Hoare annotation was computed. [2021-10-16 02:35:02,262 INFO L857 garLoopResultBuilder]: For program point L611(lines 611 613) no Hoare annotation was computed. [2021-10-16 02:35:02,262 INFO L857 garLoopResultBuilder]: For program point L446-1(lines 446 454) no Hoare annotation was computed. [2021-10-16 02:35:02,263 INFO L857 garLoopResultBuilder]: For program point L347(lines 347 384) no Hoare annotation was computed. [2021-10-16 02:35:02,263 INFO L857 garLoopResultBuilder]: For program point L347-1(lines 347 384) no Hoare annotation was computed. [2021-10-16 02:35:02,263 INFO L857 garLoopResultBuilder]: For program point L215(lines 215 572) no Hoare annotation was computed. [2021-10-16 02:35:02,263 INFO L857 garLoopResultBuilder]: For program point L182(lines 182 583) no Hoare annotation was computed. [2021-10-16 02:35:02,263 INFO L857 garLoopResultBuilder]: For program point L149(lines 149 594) no Hoare annotation was computed. [2021-10-16 02:35:02,264 INFO L857 garLoopResultBuilder]: For program point L116(lines 116 605) no Hoare annotation was computed. [2021-10-16 02:35:02,264 INFO L853 garLoopResultBuilder]: At program point L414(lines 405 426) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (or (and .cse0 (= (_ bv6 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse1) (and .cse0 .cse1 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv7 32))) (and .cse0 .cse1 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)))) [2021-10-16 02:35:02,265 INFO L857 garLoopResultBuilder]: For program point L348(lines 348 381) no Hoare annotation was computed. [2021-10-16 02:35:02,265 INFO L857 garLoopResultBuilder]: For program point L315(lines 315 325) no Hoare annotation was computed. [2021-10-16 02:35:02,265 INFO L857 garLoopResultBuilder]: For program point L315-2(lines 315 325) no Hoare annotation was computed. [2021-10-16 02:35:02,265 INFO L860 garLoopResultBuilder]: At program point L216(lines 215 572) the Hoare annotation is: true [2021-10-16 02:35:02,265 INFO L853 garLoopResultBuilder]: At program point L183(lines 179 584) the Hoare annotation is: (let ((.cse4 (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0)) (.cse0 (not (= (_ bv8545 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8544 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse2 (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse3 (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (or (and .cse0 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8544 32))) .cse1 .cse2 (= (_ bv6 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse3) (and .cse4 .cse0 .cse1 .cse2 .cse3 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv7 32))) (and .cse4 .cse0 .cse1 .cse2 .cse3 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)))) [2021-10-16 02:35:02,265 INFO L853 garLoopResultBuilder]: At program point L150(lines 146 595) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8545 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8544 32)))) (.cse2 (not (= (_ bv8544 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse3 (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse4 (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (and .cse0 .cse1 .cse2 .cse3 .cse4 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv7 32))) (and .cse0 .cse2 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv1 32)) .cse3) (and .cse0 .cse1 .cse2 .cse3 (= (_ bv6 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse4))) [2021-10-16 02:35:02,266 INFO L857 garLoopResultBuilder]: For program point L547(lines 547 551) no Hoare annotation was computed. [2021-10-16 02:35:02,267 INFO L857 garLoopResultBuilder]: For program point L547-2(lines 547 551) no Hoare annotation was computed. [2021-10-16 02:35:02,267 INFO L857 garLoopResultBuilder]: For program point L449(lines 449 452) no Hoare annotation was computed. [2021-10-16 02:35:02,268 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-16 02:35:02,268 INFO L860 garLoopResultBuilder]: At program point L218(lines 217 572) the Hoare annotation is: true [2021-10-16 02:35:02,268 INFO L857 garLoopResultBuilder]: For program point L185(lines 185 582) no Hoare annotation was computed. [2021-10-16 02:35:02,269 INFO L857 garLoopResultBuilder]: For program point L152(lines 152 593) no Hoare annotation was computed. [2021-10-16 02:35:02,269 INFO L857 garLoopResultBuilder]: For program point L119(lines 119 604) no Hoare annotation was computed. [2021-10-16 02:35:02,269 INFO L860 garLoopResultBuilder]: At program point L648(lines 639 650) the Hoare annotation is: true [2021-10-16 02:35:02,269 INFO L857 garLoopResultBuilder]: For program point L516(lines 516 526) no Hoare annotation was computed. [2021-10-16 02:35:02,269 INFO L857 garLoopResultBuilder]: For program point L417(lines 417 419) no Hoare annotation was computed. [2021-10-16 02:35:02,269 INFO L857 garLoopResultBuilder]: For program point L285(lines 285 287) no Hoare annotation was computed. [2021-10-16 02:35:02,269 INFO L857 garLoopResultBuilder]: For program point L285-2(lines 219 569) no Hoare annotation was computed. [2021-10-16 02:35:02,270 INFO L857 garLoopResultBuilder]: For program point L616(lines 616 620) no Hoare annotation was computed. [2021-10-16 02:35:02,270 INFO L857 garLoopResultBuilder]: For program point L319(lines 319 321) no Hoare annotation was computed. [2021-10-16 02:35:02,270 INFO L857 garLoopResultBuilder]: For program point L319-2(lines 317 325) no Hoare annotation was computed. [2021-10-16 02:35:02,270 INFO L857 garLoopResultBuilder]: For program point L353(lines 353 379) no Hoare annotation was computed. [2021-10-16 02:35:02,270 INFO L857 garLoopResultBuilder]: For program point L254(lines 254 264) no Hoare annotation was computed. [2021-10-16 02:35:02,270 INFO L857 garLoopResultBuilder]: For program point L188(lines 188 581) no Hoare annotation was computed. [2021-10-16 02:35:02,271 INFO L857 garLoopResultBuilder]: For program point L155(lines 155 592) no Hoare annotation was computed. [2021-10-16 02:35:02,271 INFO L857 garLoopResultBuilder]: For program point L122(lines 122 603) no Hoare annotation was computed. [2021-10-16 02:35:02,271 INFO L857 garLoopResultBuilder]: For program point L519(lines 519 525) no Hoare annotation was computed. [2021-10-16 02:35:02,271 INFO L857 garLoopResultBuilder]: For program point L486(lines 486 488) no Hoare annotation was computed. [2021-10-16 02:35:02,271 INFO L857 garLoopResultBuilder]: For program point L420(lines 420 422) no Hoare annotation was computed. [2021-10-16 02:35:02,271 INFO L857 garLoopResultBuilder]: For program point L255(lines 255 258) no Hoare annotation was computed. [2021-10-16 02:35:02,271 INFO L853 garLoopResultBuilder]: At program point L222(lines 116 605) the Hoare annotation is: false [2021-10-16 02:35:02,272 INFO L853 garLoopResultBuilder]: At program point L189(lines 185 582) the Hoare annotation is: (let ((.cse4 (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0)) (.cse0 (not (= (_ bv8545 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8544 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse2 (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse3 (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (or (and .cse0 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8544 32))) .cse1 .cse2 (= (_ bv6 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse3) (and .cse4 .cse0 .cse1 .cse2 .cse3 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv7 32))) (and .cse4 .cse0 .cse1 .cse2 .cse3 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)))) [2021-10-16 02:35:02,272 INFO L853 garLoopResultBuilder]: At program point L156(lines 152 593) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8545 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse4 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8544 32)))) (.cse1 (not (= (_ bv8544 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse2 (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse3 (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (or (and .cse0 .cse1 .cse2 .cse3 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (and .cse0 .cse4 .cse1 .cse2 .cse3 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv7 32))) (and .cse0 .cse4 .cse1 .cse2 (= (_ bv6 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse3))) [2021-10-16 02:35:02,272 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-16 02:35:02,272 INFO L857 garLoopResultBuilder]: For program point L356(lines 356 360) no Hoare annotation was computed. [2021-10-16 02:35:02,272 INFO L857 garLoopResultBuilder]: For program point L356-2(lines 356 360) no Hoare annotation was computed. [2021-10-16 02:35:02,272 INFO L857 garLoopResultBuilder]: For program point L191(lines 191 580) no Hoare annotation was computed. [2021-10-16 02:35:02,273 INFO L857 garLoopResultBuilder]: For program point L158(lines 158 591) no Hoare annotation was computed. [2021-10-16 02:35:02,273 INFO L857 garLoopResultBuilder]: For program point L125(lines 125 602) no Hoare annotation was computed. [2021-10-16 02:35:02,273 INFO L857 garLoopResultBuilder]: For program point L522(lines 522 524) no Hoare annotation was computed. [2021-10-16 02:35:02,273 INFO L857 garLoopResultBuilder]: For program point L522-2(lines 219 569) no Hoare annotation was computed. [2021-10-16 02:35:02,273 INFO L857 garLoopResultBuilder]: For program point L93(lines 93 99) no Hoare annotation was computed. [2021-10-16 02:35:02,273 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-16 02:35:02,273 INFO L857 garLoopResultBuilder]: For program point L557(lines 557 563) no Hoare annotation was computed. [2021-10-16 02:35:02,274 INFO L857 garLoopResultBuilder]: For program point L557-1(lines 557 563) no Hoare annotation was computed. [2021-10-16 02:35:02,274 INFO L857 garLoopResultBuilder]: For program point L227(lines 227 229) no Hoare annotation was computed. [2021-10-16 02:35:02,274 INFO L857 garLoopResultBuilder]: For program point L194(lines 194 579) no Hoare annotation was computed. [2021-10-16 02:35:02,274 INFO L857 garLoopResultBuilder]: For program point L161(lines 161 590) no Hoare annotation was computed. [2021-10-16 02:35:02,274 INFO L857 garLoopResultBuilder]: For program point L227-2(lines 227 229) no Hoare annotation was computed. [2021-10-16 02:35:02,274 INFO L857 garLoopResultBuilder]: For program point L128(lines 128 601) no Hoare annotation was computed. [2021-10-16 02:35:02,274 INFO L857 garLoopResultBuilder]: For program point L393(lines 393 428) no Hoare annotation was computed. [2021-10-16 02:35:02,275 INFO L853 garLoopResultBuilder]: At program point L195(lines 191 580) the Hoare annotation is: (let ((.cse0 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8544 32)))) (.cse1 (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) (.cse2 (= (_ bv8608 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (or (and (not (= (_ bv8545 32) ULTIMATE.start_ssl3_accept_~s__state~0)) .cse0 (not (= (_ bv8544 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= (_ bv6 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse1) (and .cse0 .cse1 .cse2 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv7 32))) (and .cse0 .cse1 .cse2 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)))) [2021-10-16 02:35:02,276 INFO L853 garLoopResultBuilder]: At program point L162(lines 158 591) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8545 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8544 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse2 (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse3 (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (or (and .cse0 .cse1 .cse2 .cse3 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (and .cse0 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8544 32))) .cse1 .cse2 .cse3 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv7 32))) (and .cse0 .cse1 .cse2 (= (_ bv6 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse3))) [2021-10-16 02:35:02,276 INFO L857 garLoopResultBuilder]: For program point L96(lines 96 98) no Hoare annotation was computed. [2021-10-16 02:35:02,276 INFO L857 garLoopResultBuilder]: For program point L96-2(lines 93 99) no Hoare annotation was computed. [2021-10-16 02:35:02,276 INFO L857 garLoopResultBuilder]: For program point L460(lines 460 462) no Hoare annotation was computed. [2021-10-16 02:35:02,276 INFO L857 garLoopResultBuilder]: For program point L394(lines 394 400) no Hoare annotation was computed. [2021-10-16 02:35:02,276 INFO L860 garLoopResultBuilder]: At program point L626(lines 109 627) the Hoare annotation is: true [2021-10-16 02:35:02,277 INFO L857 garLoopResultBuilder]: For program point L560(lines 560 562) no Hoare annotation was computed. [2021-10-16 02:35:02,277 INFO L857 garLoopResultBuilder]: For program point L197(lines 197 578) no Hoare annotation was computed. [2021-10-16 02:35:02,277 INFO L857 garLoopResultBuilder]: For program point L164(lines 164 589) no Hoare annotation was computed. [2021-10-16 02:35:02,277 INFO L857 garLoopResultBuilder]: For program point L131(lines 131 600) no Hoare annotation was computed. [2021-10-16 02:35:02,277 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-16 02:35:02,277 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 635) no Hoare annotation was computed. [2021-10-16 02:35:02,278 INFO L857 garLoopResultBuilder]: For program point L495(lines 495 497) no Hoare annotation was computed. [2021-10-16 02:35:02,278 INFO L853 garLoopResultBuilder]: At program point L132(lines 128 601) the Hoare annotation is: false [2021-10-16 02:35:02,278 INFO L853 garLoopResultBuilder]: At program point L496(lines 83 637) the Hoare annotation is: false [2021-10-16 02:35:02,278 INFO L857 garLoopResultBuilder]: For program point L463(lines 463 472) no Hoare annotation was computed. [2021-10-16 02:35:02,278 INFO L857 garLoopResultBuilder]: For program point L364(lines 364 375) no Hoare annotation was computed. [2021-10-16 02:35:02,278 INFO L857 garLoopResultBuilder]: For program point L298(lines 298 300) no Hoare annotation was computed. [2021-10-16 02:35:02,278 INFO L857 garLoopResultBuilder]: For program point L232(lines 232 234) no Hoare annotation was computed. [2021-10-16 02:35:02,279 INFO L857 garLoopResultBuilder]: For program point L298-2(lines 219 569) no Hoare annotation was computed. [2021-10-16 02:35:02,279 INFO L853 garLoopResultBuilder]: At program point L365(lines 341 386) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8545 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8544 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse2 (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse3 (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (or (and .cse0 .cse1 .cse2 .cse3 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (and .cse0 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8544 32))) .cse1 .cse2 .cse3 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv7 32))) (and .cse0 .cse1 .cse2 (= (_ bv6 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse3))) [2021-10-16 02:35:02,279 INFO L857 garLoopResultBuilder]: For program point L200(lines 200 577) no Hoare annotation was computed. [2021-10-16 02:35:02,279 INFO L857 garLoopResultBuilder]: For program point L167(lines 167 588) no Hoare annotation was computed. [2021-10-16 02:35:02,279 INFO L857 garLoopResultBuilder]: For program point L134(lines 134 599) no Hoare annotation was computed. [2021-10-16 02:35:02,279 INFO L857 garLoopResultBuilder]: For program point L101(lines 101 105) no Hoare annotation was computed. [2021-10-16 02:35:02,280 INFO L857 garLoopResultBuilder]: For program point L101-1(lines 83 637) no Hoare annotation was computed. [2021-10-16 02:35:02,284 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:35:02,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:35:02 BoogieIcfgContainer [2021-10-16 02:35:02,338 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:35:02,349 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:35:02,349 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:35:02,350 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:35:02,350 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:33:26" (3/4) ... [2021-10-16 02:35:02,353 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-16 02:35:02,384 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-16 02:35:02,385 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-16 02:35:02,386 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 02:35:02,387 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 02:35:02,521 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 02:35:02,521 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:35:02,523 INFO L168 Benchmark]: Toolchain (without parser) took 98030.95 ms. Allocated memory was 58.7 MB in the beginning and 729.8 MB in the end (delta: 671.1 MB). Free memory was 35.3 MB in the beginning and 418.3 MB in the end (delta: -383.0 MB). Peak memory consumption was 286.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:35:02,524 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 58.7 MB. Free memory was 38.9 MB in the beginning and 38.9 MB in the end (delta: 22.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:35:02,524 INFO L168 Benchmark]: CACSL2BoogieTranslator took 474.71 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 35.1 MB in the beginning and 50.3 MB in the end (delta: -15.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:35:02,525 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.23 ms. Allocated memory is still 71.3 MB. Free memory was 50.3 MB in the beginning and 47.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:35:02,525 INFO L168 Benchmark]: Boogie Preprocessor took 84.75 ms. Allocated memory is still 71.3 MB. Free memory was 47.6 MB in the beginning and 45.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:35:02,526 INFO L168 Benchmark]: RCFGBuilder took 916.18 ms. Allocated memory is still 71.3 MB. Free memory was 45.3 MB in the beginning and 35.6 MB in the end (delta: 9.7 MB). Peak memory consumption was 15.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:35:02,526 INFO L168 Benchmark]: TraceAbstraction took 96316.21 ms. Allocated memory was 71.3 MB in the beginning and 729.8 MB in the end (delta: 658.5 MB). Free memory was 35.1 MB in the beginning and 429.8 MB in the end (delta: -394.7 MB). Peak memory consumption was 523.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:35:02,527 INFO L168 Benchmark]: Witness Printer took 172.28 ms. Allocated memory is still 729.8 MB. Free memory was 429.8 MB in the beginning and 418.3 MB in the end (delta: 11.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:35:02,530 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 58.7 MB. Free memory was 38.9 MB in the beginning and 38.9 MB in the end (delta: 22.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 474.71 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 35.1 MB in the beginning and 50.3 MB in the end (delta: -15.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 58.23 ms. Allocated memory is still 71.3 MB. Free memory was 50.3 MB in the beginning and 47.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 84.75 ms. Allocated memory is still 71.3 MB. Free memory was 47.6 MB in the beginning and 45.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 916.18 ms. Allocated memory is still 71.3 MB. Free memory was 45.3 MB in the beginning and 35.6 MB in the end (delta: 9.7 MB). Peak memory consumption was 15.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 96316.21 ms. Allocated memory was 71.3 MB in the beginning and 729.8 MB in the end (delta: 658.5 MB). Free memory was 35.1 MB in the beginning and 429.8 MB in the end (delta: -394.7 MB). Peak memory consumption was 523.1 MB. Max. memory is 16.1 GB. * Witness Printer took 172.28 ms. Allocated memory is still 729.8 MB. Free memory was 429.8 MB in the beginning and 418.3 MB in the end (delta: 11.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 635]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 146 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 96163.6ms, OverallIterations: 27, TraceHistogramMax: 14, EmptinessCheckTime: 177.5ms, AutomataDifference: 5822.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 7572.4ms, InitialAbstractionConstructionTime: 13.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 6972 SDtfs, 3387 SDslu, 5911 SDs, 0 SdLazy, 2975 SolverSat, 642 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2452.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14908 GetRequests, 14861 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 140.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=8885occurred in iteration=24, InterpolantAutomatonStates: 96, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 3051.0ms AutomataMinimizationTime, 27 MinimizatonAttempts, 8821 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 28 LocationsWithAnnotation, 28 PreInvPairs, 273 NumberOfFragments, 2137 HoareAnnotationTreeSize, 28 FomulaSimplifications, 49131 FormulaSimplificationTreeSizeReduction, 1886.4ms HoareSimplificationTime, 28 FomulaSimplificationsInter, 11978 FormulaSimplificationTreeSizeReductionInter, 5666.3ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 510.0ms SsaConstructionTime, 2153.8ms SatisfiabilityAnalysisTime, 29836.2ms InterpolantComputationTime, 7483 NumberOfCodeBlocks, 7483 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 14898 ConstructedInterpolants, 0 QuantifiedInterpolants, 21655 SizeOfPredicates, 13 NumberOfNonLiveVariables, 9170 ConjunctsInSsa, 81 ConjunctsInUnsatCore, 68 InterpolantComputations, 48 PerfectInterpolantSequences, 41340/41836 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 109]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 164]: Loop Invariant Derived loop invariant: (((!(8656bv32 == s__state) && 6bv32 == blastFlag) && s__hit == 0bv32) || ((!(8656bv32 == s__state) && s__hit == 0bv32) && blastFlag == 7bv32)) || ((!(8656bv32 == s__state) && s__hit == 0bv32) && 2bv32 == blastFlag) - InvariantResult [Line: 134]: Loop Invariant Derived loop invariant: ((!(8545bv32 == s__state) && !(8544bv32 == s__state)) && !(8656bv32 == s__state)) && s__hit == 0bv32 - InvariantResult [Line: 215]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 203]: Loop Invariant Derived loop invariant: ((((((!(8545bv32 == s__state) && !(s__s3__tmp__next_state___0 == 8544bv32)) && !(8544bv32 == s__state)) && s__hit == 0bv32) && blastFlag == 7bv32) || ((((!(8545bv32 == s__state) && !(s__s3__tmp__next_state___0 == 8544bv32)) && !(8544bv32 == s__state)) && 6bv32 == blastFlag) && s__hit == 0bv32)) || (((!(8545bv32 == s__state) && !(8544bv32 == s__state)) && !(s__hit == 0bv32)) && 2bv32 == blastFlag)) || (((!(8545bv32 == s__state) && !(s__s3__tmp__next_state___0 == 8544bv32)) && !(8544bv32 == s__state)) && 2bv32 == blastFlag) - InvariantResult [Line: 191]: Loop Invariant Derived loop invariant: ((((((!(8545bv32 == s__state) && !(s__s3__tmp__next_state___0 == 8544bv32)) && !(8544bv32 == s__state)) && !(8656bv32 == s__state)) && 6bv32 == blastFlag) && s__hit == 0bv32) || (((!(s__s3__tmp__next_state___0 == 8544bv32) && s__hit == 0bv32) && 8608bv32 == s__state) && blastFlag == 7bv32)) || (((!(s__s3__tmp__next_state___0 == 8544bv32) && s__hit == 0bv32) && 8608bv32 == s__state) && 2bv32 == blastFlag) - InvariantResult [Line: 110]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((((((((((((((((((!(s__s3__tmp__next_state___0 == 8544bv32) && 8466bv32 == s__state) && s__hit == 0bv32) && blastFlag == 7bv32) || (((8656bv32 == s__state && !(s__s3__tmp__next_state___0 == 8544bv32)) && 6bv32 == blastFlag) && s__hit == 0bv32)) || (((!(blastFlag == 5bv32) && 3bv32 == s__s3__tmp__next_state___0) && 8448bv32 == s__state) && s__hit == 0bv32)) || ((8512bv32 == s__state && s__hit == 0bv32) && 2bv32 == blastFlag)) || (((8672bv32 == s__state && !(blastFlag == 5bv32)) && !(s__s3__tmp__next_state___0 == 8544bv32)) && s__hit == 0bv32)) || (((8576bv32 == s__s3__tmp__next_state___0 && 8576bv32 == s__state) && 6bv32 == blastFlag) && s__hit == 0bv32)) || ((8560bv32 == s__state && s__hit == 0bv32) && blastFlag == 7bv32)) || (((8576bv32 == s__s3__tmp__next_state___0 && 8448bv32 == s__state) && 6bv32 == blastFlag) && s__hit == 0bv32)) || ((8672bv32 == s__state && 3bv32 == blastFlag) && !(s__hit == 0bv32))) || (((8496bv32 == s__state && !(s__s3__tmp__next_state___0 == 8544bv32)) && s__hit == 0bv32) && blastFlag == 7bv32)) || (((8656bv32 == s__state && !(s__s3__tmp__next_state___0 == 8544bv32)) && s__hit == 0bv32) && blastFlag == 7bv32)) || ((8528bv32 == s__state && 6bv32 == blastFlag) && s__hit == 0bv32)) || (((8576bv32 == s__s3__tmp__next_state___0 && s__hit == 0bv32) && 8592bv32 == s__state) && 2bv32 == blastFlag)) || (((!(s__s3__tmp__next_state___0 == 8544bv32) && 6bv32 == blastFlag) && s__hit == 0bv32) && 8608bv32 == s__state)) || ((8560bv32 == s__state && 6bv32 == blastFlag) && s__hit == 0bv32)) || ((3bv32 == s__state && 4bv32 == blastFlag) && s__s3__tmp__next_state___0 == 8640bv32)) || ((8656bv32 == s__state && !(s__s3__tmp__next_state___0 == 8544bv32)) && 2bv32 == blastFlag)) || ((8656bv32 == s__state && !(s__hit == 0bv32)) && 2bv32 == blastFlag)) || (((!(s__s3__tmp__next_state___0 == 8544bv32) && 8528bv32 == s__state) && s__hit == 0bv32) && blastFlag == 7bv32)) || (((8576bv32 == s__s3__tmp__next_state___0 && 8448bv32 == s__state) && s__hit == 0bv32) && 2bv32 == blastFlag)) || (3bv32 == s__state && s__hit == 0bv32)) || (((8576bv32 == s__s3__tmp__next_state___0 && s__hit == 0bv32) && 8608bv32 == s__state) && blastFlag == 7bv32)) || (((8496bv32 == s__state && !(s__s3__tmp__next_state___0 == 8544bv32)) && s__hit == 0bv32) && 2bv32 == blastFlag)) || (((8576bv32 == s__s3__tmp__next_state___0 && s__hit == 0bv32) && 8608bv32 == s__state) && 2bv32 == blastFlag)) || (((8576bv32 == s__s3__tmp__next_state___0 && 8448bv32 == s__state) && s__hit == 0bv32) && blastFlag == 7bv32)) || (((!(s__s3__tmp__next_state___0 == 8544bv32) && 8512bv32 == s__state) && 6bv32 == blastFlag) && s__hit == 0bv32)) || (((!(s__s3__tmp__next_state___0 == 8544bv32) && 8466bv32 == s__state) && 6bv32 == blastFlag) && s__hit == 0bv32)) || (((8576bv32 == s__s3__tmp__next_state___0 && 8576bv32 == s__state) && s__hit == 0bv32) && 2bv32 == blastFlag)) || (((!(s__s3__tmp__next_state___0 == 8544bv32) && 6bv32 == blastFlag) && s__hit == 0bv32) && 8592bv32 == s__state)) || (((4bv32 == blastFlag && 8448bv32 == s__state) && s__s3__tmp__next_state___0 == 8640bv32) && !(s__hit == 0bv32))) || (((8576bv32 == s__s3__tmp__next_state___0 && 8576bv32 == s__state) && s__hit == 0bv32) && blastFlag == 7bv32)) || ((8528bv32 == s__state && s__hit == 0bv32) && 2bv32 == blastFlag)) || (((!(s__s3__tmp__next_state___0 == 8544bv32) && 8640bv32 == s__state) && s__hit == 0bv32) && 2bv32 == blastFlag)) || (((!(s__s3__tmp__next_state___0 == 8544bv32) && 8512bv32 == s__state) && s__hit == 0bv32) && blastFlag == 7bv32)) || ((8544bv32 == s__state && s__hit == 0bv32) && blastFlag == 7bv32)) || ((8544bv32 == s__state && 6bv32 == blastFlag) && s__hit == 0bv32)) || (8496bv32 == s__state && blastFlag == 1bv32)) || (((!(s__s3__tmp__next_state___0 == 8544bv32) && 8640bv32 == s__state) && s__hit == 0bv32) && blastFlag == 7bv32)) || (((8496bv32 == s__state && !(s__s3__tmp__next_state___0 == 8544bv32)) && 6bv32 == blastFlag) && s__hit == 0bv32)) || (((!(s__s3__tmp__next_state___0 == 8544bv32) && 8466bv32 == s__state) && s__hit == 0bv32) && 2bv32 == blastFlag)) || (((8576bv32 == s__s3__tmp__next_state___0 && s__hit == 0bv32) && 8592bv32 == s__state) && blastFlag == 7bv32)) || (((!(s__s3__tmp__next_state___0 == 8544bv32) && 8640bv32 == s__state) && 6bv32 == blastFlag) && s__hit == 0bv32)) || (((4bv32 == blastFlag && 8640bv32 == s__state) && s__s3__tmp__next_state___0 == 8640bv32) && !(s__hit == 0bv32))) || ((8560bv32 == s__state && s__hit == 0bv32) && 2bv32 == blastFlag)) || ((8544bv32 == s__state && s__hit == 0bv32) && 2bv32 == blastFlag) - InvariantResult [Line: 137]: Loop Invariant Derived loop invariant: (((((((!(8545bv32 == s__state) && !(s__s3__tmp__next_state___0 == 8544bv32)) && !(8544bv32 == s__state)) && !(8656bv32 == s__state)) && s__hit == 0bv32) && 2bv32 == blastFlag) || (((((!(8545bv32 == s__state) && !(s__s3__tmp__next_state___0 == 8544bv32)) && !(8544bv32 == s__state)) && !(8656bv32 == s__state)) && s__hit == 0bv32) && blastFlag == 7bv32)) || (((((!(8545bv32 == s__state) && !(s__s3__tmp__next_state___0 == 8544bv32)) && !(8544bv32 == s__state)) && !(8656bv32 == s__state)) && 6bv32 == blastFlag) && s__hit == 0bv32)) || (((!(8545bv32 == s__state) && !(8544bv32 == s__state)) && blastFlag == 0bv32) && !(8656bv32 == s__state)) - InvariantResult [Line: 217]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 110]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((((((((((((((((((((((((((!(s__s3__tmp__next_state___0 == 8544bv32) && 8466bv32 == s__state) && s__hit == 0bv32) && blastFlag == 7bv32) || (((8656bv32 == s__state && !(s__s3__tmp__next_state___0 == 8544bv32)) && 6bv32 == blastFlag) && s__hit == 0bv32)) || (((!(blastFlag == 5bv32) && 3bv32 == s__s3__tmp__next_state___0) && 8448bv32 == s__state) && s__hit == 0bv32)) || ((8512bv32 == s__state && s__hit == 0bv32) && 2bv32 == blastFlag)) || (((8672bv32 == s__state && !(blastFlag == 5bv32)) && !(s__s3__tmp__next_state___0 == 8544bv32)) && s__hit == 0bv32)) || (((8576bv32 == s__s3__tmp__next_state___0 && 8576bv32 == s__state) && 6bv32 == blastFlag) && s__hit == 0bv32)) || ((8560bv32 == s__state && s__hit == 0bv32) && blastFlag == 7bv32)) || (((8576bv32 == s__s3__tmp__next_state___0 && 8448bv32 == s__state) && 6bv32 == blastFlag) && s__hit == 0bv32)) || ((8672bv32 == s__state && 3bv32 == blastFlag) && !(s__hit == 0bv32))) || (((8496bv32 == s__state && !(s__s3__tmp__next_state___0 == 8544bv32)) && s__hit == 0bv32) && blastFlag == 7bv32)) || (((8656bv32 == s__state && !(s__s3__tmp__next_state___0 == 8544bv32)) && s__hit == 0bv32) && blastFlag == 7bv32)) || ((8528bv32 == s__state && 6bv32 == blastFlag) && s__hit == 0bv32)) || (((8576bv32 == s__s3__tmp__next_state___0 && s__hit == 0bv32) && 8592bv32 == s__state) && 2bv32 == blastFlag)) || (((!(s__s3__tmp__next_state___0 == 8544bv32) && 6bv32 == blastFlag) && s__hit == 0bv32) && 8608bv32 == s__state)) || ((8560bv32 == s__state && 6bv32 == blastFlag) && s__hit == 0bv32)) || ((3bv32 == s__state && 4bv32 == blastFlag) && s__s3__tmp__next_state___0 == 8640bv32)) || ((8656bv32 == s__state && !(s__s3__tmp__next_state___0 == 8544bv32)) && 2bv32 == blastFlag)) || ((8656bv32 == s__state && !(s__hit == 0bv32)) && 2bv32 == blastFlag)) || (((!(s__s3__tmp__next_state___0 == 8544bv32) && 8528bv32 == s__state) && s__hit == 0bv32) && blastFlag == 7bv32)) || (((8576bv32 == s__s3__tmp__next_state___0 && 8448bv32 == s__state) && s__hit == 0bv32) && 2bv32 == blastFlag)) || (3bv32 == s__state && s__hit == 0bv32)) || (((8576bv32 == s__s3__tmp__next_state___0 && s__hit == 0bv32) && 8608bv32 == s__state) && blastFlag == 7bv32)) || (((8496bv32 == s__state && !(s__s3__tmp__next_state___0 == 8544bv32)) && s__hit == 0bv32) && 2bv32 == blastFlag)) || (((8576bv32 == s__s3__tmp__next_state___0 && s__hit == 0bv32) && 8608bv32 == s__state) && 2bv32 == blastFlag)) || (((8576bv32 == s__s3__tmp__next_state___0 && 8448bv32 == s__state) && s__hit == 0bv32) && blastFlag == 7bv32)) || (((!(s__s3__tmp__next_state___0 == 8544bv32) && 8512bv32 == s__state) && 6bv32 == blastFlag) && s__hit == 0bv32)) || (((!(s__s3__tmp__next_state___0 == 8544bv32) && 8466bv32 == s__state) && 6bv32 == blastFlag) && s__hit == 0bv32)) || (((8576bv32 == s__s3__tmp__next_state___0 && 8576bv32 == s__state) && s__hit == 0bv32) && 2bv32 == blastFlag)) || (((!(s__s3__tmp__next_state___0 == 8544bv32) && 6bv32 == blastFlag) && s__hit == 0bv32) && 8592bv32 == s__state)) || (((4bv32 == blastFlag && 8448bv32 == s__state) && s__s3__tmp__next_state___0 == 8640bv32) && !(s__hit == 0bv32))) || (((8576bv32 == s__s3__tmp__next_state___0 && 8576bv32 == s__state) && s__hit == 0bv32) && blastFlag == 7bv32)) || ((8528bv32 == s__state && s__hit == 0bv32) && 2bv32 == blastFlag)) || (((!(s__s3__tmp__next_state___0 == 8544bv32) && 8640bv32 == s__state) && s__hit == 0bv32) && 2bv32 == blastFlag)) || (((!(s__s3__tmp__next_state___0 == 8544bv32) && 8512bv32 == s__state) && s__hit == 0bv32) && blastFlag == 7bv32)) || ((8544bv32 == s__state && s__hit == 0bv32) && blastFlag == 7bv32)) || ((8544bv32 == s__state && 6bv32 == blastFlag) && s__hit == 0bv32)) || (8496bv32 == s__state && blastFlag == 1bv32)) || (((!(s__s3__tmp__next_state___0 == 8544bv32) && 8640bv32 == s__state) && s__hit == 0bv32) && blastFlag == 7bv32)) || (((8496bv32 == s__state && !(s__s3__tmp__next_state___0 == 8544bv32)) && 6bv32 == blastFlag) && s__hit == 0bv32)) || (((!(s__s3__tmp__next_state___0 == 8544bv32) && 8466bv32 == s__state) && s__hit == 0bv32) && 2bv32 == blastFlag)) || (((8576bv32 == s__s3__tmp__next_state___0 && s__hit == 0bv32) && 8592bv32 == s__state) && blastFlag == 7bv32)) || (((!(s__s3__tmp__next_state___0 == 8544bv32) && 8640bv32 == s__state) && 6bv32 == blastFlag) && s__hit == 0bv32)) || (8464bv32 == s__state && blastFlag == 0bv32)) || (((4bv32 == blastFlag && 8640bv32 == s__state) && s__s3__tmp__next_state___0 == 8640bv32) && !(s__hit == 0bv32))) || ((8560bv32 == s__state && s__hit == 0bv32) && 2bv32 == blastFlag)) || ((8544bv32 == s__state && s__hit == 0bv32) && 2bv32 == blastFlag) - InvariantResult [Line: 83]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 116]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 113]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 341]: Loop Invariant Derived loop invariant: (((((!(8545bv32 == s__state) && !(8544bv32 == s__state)) && !(8656bv32 == s__state)) && s__hit == 0bv32) && 2bv32 == blastFlag) || (((((!(8545bv32 == s__state) && !(s__s3__tmp__next_state___0 == 8544bv32)) && !(8544bv32 == s__state)) && !(8656bv32 == s__state)) && s__hit == 0bv32) && blastFlag == 7bv32)) || ((((!(8545bv32 == s__state) && !(8544bv32 == s__state)) && !(8656bv32 == s__state)) && 6bv32 == blastFlag) && s__hit == 0bv32) - InvariantResult [Line: 393]: Loop Invariant Derived loop invariant: (((!(8656bv32 == s__state) && 6bv32 == blastFlag) && s__hit == 0bv32) || ((!(8656bv32 == s__state) && s__hit == 0bv32) && blastFlag == 7bv32)) || ((!(8656bv32 == s__state) && s__hit == 0bv32) && 2bv32 == blastFlag) - InvariantResult [Line: 176]: Loop Invariant Derived loop invariant: ((((((!(blastFlag == 5bv32) && 3bv32 == s__s3__tmp__next_state___0) && 8448bv32 == s__state) && s__hit == 0bv32) || (((8576bv32 == s__s3__tmp__next_state___0 && 8448bv32 == s__state) && 6bv32 == blastFlag) && s__hit == 0bv32)) || (((8576bv32 == s__s3__tmp__next_state___0 && 8448bv32 == s__state) && s__hit == 0bv32) && 2bv32 == blastFlag)) || (((8576bv32 == s__s3__tmp__next_state___0 && 8448bv32 == s__state) && s__hit == 0bv32) && blastFlag == 7bv32)) || (((4bv32 == blastFlag && 8448bv32 == s__state) && s__s3__tmp__next_state___0 == 8640bv32) && !(s__hit == 0bv32)) - InvariantResult [Line: 185]: Loop Invariant Derived loop invariant: ((((((!(8545bv32 == s__state) && !(s__s3__tmp__next_state___0 == 8544bv32)) && !(8544bv32 == s__state)) && !(8656bv32 == s__state)) && 6bv32 == blastFlag) && s__hit == 0bv32) || (((((8576bv32 == s__s3__tmp__next_state___0 && !(8545bv32 == s__state)) && !(8544bv32 == s__state)) && !(8656bv32 == s__state)) && s__hit == 0bv32) && blastFlag == 7bv32)) || (((((8576bv32 == s__s3__tmp__next_state___0 && !(8545bv32 == s__state)) && !(8544bv32 == s__state)) && !(8656bv32 == s__state)) && s__hit == 0bv32) && 2bv32 == blastFlag) - InvariantResult [Line: 405]: Loop Invariant Derived loop invariant: (((!(8656bv32 == s__state) && 6bv32 == blastFlag) && s__hit == 0bv32) || ((!(8656bv32 == s__state) && s__hit == 0bv32) && blastFlag == 7bv32)) || ((!(8656bv32 == s__state) && s__hit == 0bv32) && 2bv32 == blastFlag) - InvariantResult [Line: 209]: Loop Invariant Derived loop invariant: (((((!(blastFlag == 5bv32) && !(8545bv32 == s__state)) && !(s__s3__tmp__next_state___0 == 8544bv32)) && !(8544bv32 == s__state)) && !(8656bv32 == s__state)) && s__hit == 0bv32) || ((((!(8545bv32 == s__state) && !(8544bv32 == s__state)) && 3bv32 == blastFlag) && !(8656bv32 == s__state)) && !(s__hit == 0bv32)) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 128]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 152]: Loop Invariant Derived loop invariant: (((((!(8545bv32 == s__state) && !(8544bv32 == s__state)) && !(8656bv32 == s__state)) && s__hit == 0bv32) && 2bv32 == blastFlag) || (((((!(8545bv32 == s__state) && !(s__s3__tmp__next_state___0 == 8544bv32)) && !(8544bv32 == s__state)) && !(8656bv32 == s__state)) && s__hit == 0bv32) && blastFlag == 7bv32)) || (((((!(8545bv32 == s__state) && !(s__s3__tmp__next_state___0 == 8544bv32)) && !(8544bv32 == s__state)) && !(8656bv32 == s__state)) && 6bv32 == blastFlag) && s__hit == 0bv32) - InvariantResult [Line: 170]: Loop Invariant Derived loop invariant: (((((!(8545bv32 == s__state) && !(8544bv32 == s__state)) && !(8656bv32 == s__state)) && s__hit == 0bv32) && 2bv32 == blastFlag) || ((((!(8545bv32 == s__state) && !(8544bv32 == s__state)) && !(8656bv32 == s__state)) && s__hit == 0bv32) && blastFlag == 7bv32)) || ((((!(8545bv32 == s__state) && !(8544bv32 == s__state)) && !(8656bv32 == s__state)) && 6bv32 == blastFlag) && s__hit == 0bv32) - InvariantResult [Line: 179]: Loop Invariant Derived loop invariant: ((((((!(8545bv32 == s__state) && !(s__s3__tmp__next_state___0 == 8544bv32)) && !(8544bv32 == s__state)) && !(8656bv32 == s__state)) && 6bv32 == blastFlag) && s__hit == 0bv32) || (((((8576bv32 == s__s3__tmp__next_state___0 && !(8545bv32 == s__state)) && !(8544bv32 == s__state)) && !(8656bv32 == s__state)) && s__hit == 0bv32) && blastFlag == 7bv32)) || (((((8576bv32 == s__s3__tmp__next_state___0 && !(8545bv32 == s__state)) && !(8544bv32 == s__state)) && !(8656bv32 == s__state)) && s__hit == 0bv32) && 2bv32 == blastFlag) - InvariantResult [Line: 146]: Loop Invariant Derived loop invariant: (((((((!(8545bv32 == s__state) && !(s__s3__tmp__next_state___0 == 8544bv32)) && !(8544bv32 == s__state)) && !(8656bv32 == s__state)) && s__hit == 0bv32) && 2bv32 == blastFlag) || (((((!(8545bv32 == s__state) && !(s__s3__tmp__next_state___0 == 8544bv32)) && !(8544bv32 == s__state)) && !(8656bv32 == s__state)) && s__hit == 0bv32) && blastFlag == 7bv32)) || (((!(8545bv32 == s__state) && !(8544bv32 == s__state)) && blastFlag == 1bv32) && !(8656bv32 == s__state))) || (((((!(8545bv32 == s__state) && !(s__s3__tmp__next_state___0 == 8544bv32)) && !(8544bv32 == s__state)) && !(8656bv32 == s__state)) && 6bv32 == blastFlag) && s__hit == 0bv32) - InvariantResult [Line: 197]: Loop Invariant Derived loop invariant: (((((((!(8545bv32 == s__state) && !(8544bv32 == s__state)) && 4bv32 == blastFlag) && !(8656bv32 == s__state)) && s__s3__tmp__next_state___0 == 8640bv32) && !(s__hit == 0bv32)) || (((((!(8545bv32 == s__state) && !(s__s3__tmp__next_state___0 == 8544bv32)) && !(8544bv32 == s__state)) && !(8656bv32 == s__state)) && s__hit == 0bv32) && 2bv32 == blastFlag)) || (((((!(8545bv32 == s__state) && !(s__s3__tmp__next_state___0 == 8544bv32)) && !(8544bv32 == s__state)) && !(8656bv32 == s__state)) && s__hit == 0bv32) && blastFlag == 7bv32)) || (((((!(8545bv32 == s__state) && !(s__s3__tmp__next_state___0 == 8544bv32)) && !(8544bv32 == s__state)) && !(8656bv32 == s__state)) && 6bv32 == blastFlag) && s__hit == 0bv32) - InvariantResult [Line: 639]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 158]: Loop Invariant Derived loop invariant: (((((!(8545bv32 == s__state) && !(8544bv32 == s__state)) && !(8656bv32 == s__state)) && s__hit == 0bv32) && 2bv32 == blastFlag) || (((((!(8545bv32 == s__state) && !(s__s3__tmp__next_state___0 == 8544bv32)) && !(8544bv32 == s__state)) && !(8656bv32 == s__state)) && s__hit == 0bv32) && blastFlag == 7bv32)) || ((((!(8545bv32 == s__state) && !(8544bv32 == s__state)) && !(8656bv32 == s__state)) && 6bv32 == blastFlag) && s__hit == 0bv32) RESULT: Ultimate proved your program to be correct! [2021-10-16 02:35:02,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aca553a9-f186-42cd-88d2-46b782921c2b/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...