./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-multidimensional/init-2-n-u.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-multidimensional/init-2-n-u.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8 --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 0cb0e77f89daac547c42b2171c72b94010312494 .................................................................................................................................................................................................................................................................................................................................................................................................................................. 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_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-multidimensional/init-2-n-u.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8 --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 0cb0e77f89daac547c42b2171c72b94010312494 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (11) with exit command (exit)) Received EOF on stdin. stderr output: Fatal failure within void CVC4::TheoryEngine::check(CVC4::theory::Theory::Effort) at /barrett/scratch/noetzli/barrett-cluster/cvc4_build_scripts/dest_fixed/src/cvc4-2020-08-25/src/theory/theory_engine.cpp:545 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 06:44:32,230 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 06:44:32,232 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 06:44:32,278 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 06:44:32,278 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 06:44:32,282 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 06:44:32,284 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 06:44:32,288 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 06:44:32,291 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 06:44:32,297 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 06:44:32,298 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 06:44:32,299 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 06:44:32,300 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 06:44:32,304 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 06:44:32,307 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 06:44:32,316 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 06:44:32,318 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 06:44:32,319 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 06:44:32,322 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 06:44:32,329 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 06:44:32,331 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 06:44:32,333 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 06:44:32,337 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 06:44:32,338 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 06:44:32,349 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 06:44:32,349 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 06:44:32,349 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 06:44:32,352 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 06:44:32,353 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 06:44:32,354 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 06:44:32,355 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 06:44:32,356 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 06:44:32,358 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 06:44:32,359 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 06:44:32,361 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 06:44:32,361 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 06:44:32,362 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 06:44:32,362 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 06:44:32,363 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 06:44:32,363 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 06:44:32,364 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 06:44:32,365 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 06:44:32,417 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 06:44:32,417 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 06:44:32,418 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 06:44:32,418 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 06:44:32,419 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 06:44:32,419 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 06:44:32,419 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 06:44:32,419 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 06:44:32,419 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 06:44:32,420 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 06:44:32,420 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 06:44:32,420 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 06:44:32,420 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 06:44:32,420 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 06:44:32,420 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 06:44:32,421 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 06:44:32,421 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 06:44:32,422 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 06:44:32,422 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 06:44:32,422 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 06:44:32,422 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 06:44:32,422 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 06:44:32,422 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 06:44:32,423 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 06:44:32,423 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 06:44:32,423 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 06:44:32,423 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 06:44:32,424 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 06:44:32,424 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 06:44:32,424 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 06:44:32,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:44:32,424 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 06:44:32,425 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 06:44:32,425 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 06:44:32,425 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 06:44:32,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 06:44:32,425 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 06:44:32,425 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 06:44:32,426 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 06:44:32,426 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_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0cb0e77f89daac547c42b2171c72b94010312494 [2021-10-13 06:44:32,667 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 06:44:32,686 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 06:44:32,688 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 06:44:32,690 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 06:44:32,690 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 06:44:32,691 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/array-multidimensional/init-2-n-u.c [2021-10-13 06:44:32,783 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/data/1f2f4b340/0045cf7a189148658f5d7a1d13422dfa/FLAG435f8b95e [2021-10-13 06:44:33,204 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 06:44:33,207 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/sv-benchmarks/c/array-multidimensional/init-2-n-u.c [2021-10-13 06:44:33,216 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/data/1f2f4b340/0045cf7a189148658f5d7a1d13422dfa/FLAG435f8b95e [2021-10-13 06:44:33,599 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/data/1f2f4b340/0045cf7a189148658f5d7a1d13422dfa [2021-10-13 06:44:33,602 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 06:44:33,604 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 06:44:33,609 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 06:44:33,609 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 06:44:33,613 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 06:44:33,613 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:44:33" (1/1) ... [2021-10-13 06:44:33,615 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a96a927 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:33, skipping insertion in model container [2021-10-13 06:44:33,615 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:44:33" (1/1) ... [2021-10-13 06:44:33,623 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 06:44:33,635 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 06:44:33,782 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_a5714ac4-f8d2-4456-85db-279880dfaff3/sv-benchmarks/c/array-multidimensional/init-2-n-u.c[322,335] [2021-10-13 06:44:33,797 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:44:33,805 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 06:44:33,817 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_a5714ac4-f8d2-4456-85db-279880dfaff3/sv-benchmarks/c/array-multidimensional/init-2-n-u.c[322,335] [2021-10-13 06:44:33,824 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:44:33,837 INFO L208 MainTranslator]: Completed translation [2021-10-13 06:44:33,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:33 WrapperNode [2021-10-13 06:44:33,838 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 06:44:33,839 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 06:44:33,840 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 06:44:33,840 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 06:44:33,848 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:33" (1/1) ... [2021-10-13 06:44:33,854 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:33" (1/1) ... [2021-10-13 06:44:33,872 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 06:44:33,873 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 06:44:33,874 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 06:44:33,874 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 06:44:33,882 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:33" (1/1) ... [2021-10-13 06:44:33,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:33" (1/1) ... [2021-10-13 06:44:33,884 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:33" (1/1) ... [2021-10-13 06:44:33,884 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:33" (1/1) ... [2021-10-13 06:44:33,889 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:33" (1/1) ... [2021-10-13 06:44:33,893 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:33" (1/1) ... [2021-10-13 06:44:33,894 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:33" (1/1) ... [2021-10-13 06:44:33,896 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 06:44:33,897 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 06:44:33,897 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 06:44:33,897 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 06:44:33,898 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:33" (1/1) ... [2021-10-13 06:44:33,908 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:44:33,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:44:33,951 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 06:44:33,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 06:44:33,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 06:44:33,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 06:44:33,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 06:44:33,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 06:44:33,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 06:44:33,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-13 06:44:33,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 06:44:34,341 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 06:44:34,341 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-13 06:44:34,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:44:34 BoogieIcfgContainer [2021-10-13 06:44:34,343 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 06:44:34,345 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 06:44:34,345 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 06:44:34,355 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 06:44:34,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:44:33" (1/3) ... [2021-10-13 06:44:34,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@214a6fe6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:44:34, skipping insertion in model container [2021-10-13 06:44:34,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:33" (2/3) ... [2021-10-13 06:44:34,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@214a6fe6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:44:34, skipping insertion in model container [2021-10-13 06:44:34,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:44:34" (3/3) ... [2021-10-13 06:44:34,358 INFO L111 eAbstractionObserver]: Analyzing ICFG init-2-n-u.c [2021-10-13 06:44:34,363 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 06:44:34,363 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 06:44:34,430 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 06:44:34,437 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 [2021-10-13 06:44:34,437 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 06:44:34,451 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.75) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:34,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 06:44:34,456 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:44:34,456 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 06:44:34,457 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:44:34,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:44:34,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1361640078, now seen corresponding path program 1 times [2021-10-13 06:44:34,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:44:34,487 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378185988] [2021-10-13 06:44:34,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:44:34,488 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:44:34,588 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 06:44:34,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [574707033] [2021-10-13 06:44:34,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:44:34,589 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 06:44:34,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:44:34,595 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 06:44:34,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 06:44:34,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:44:34,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 06:44:34,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:44:34,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:44:34,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:44:34,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:44:34,836 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:44:34,837 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378185988] [2021-10-13 06:44:34,837 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 06:44:34,837 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574707033] [2021-10-13 06:44:34,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574707033] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 06:44:34,838 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:44:34,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-13 06:44:34,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242744438] [2021-10-13 06:44:34,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 06:44:34,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:44:34,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 06:44:34,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 06:44:34,861 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.75) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:34,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:44:34,929 INFO L93 Difference]: Finished difference Result 20 states and 29 transitions. [2021-10-13 06:44:34,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 06:44:34,932 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-13 06:44:34,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:44:34,940 INFO L225 Difference]: With dead ends: 20 [2021-10-13 06:44:34,940 INFO L226 Difference]: Without dead ends: 12 [2021-10-13 06:44:34,943 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 06:44:34,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-10-13 06:44:34,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-10-13 06:44:34,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 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) [2021-10-13 06:44:34,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2021-10-13 06:44:34,977 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 16 transitions. Word has length 6 [2021-10-13 06:44:34,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:44:34,978 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 16 transitions. [2021-10-13 06:44:34,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:34,978 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 16 transitions. [2021-10-13 06:44:34,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 06:44:34,979 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:44:34,979 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2021-10-13 06:44:35,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 06:44:35,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-10-13 06:44:35,192 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:44:35,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:44:35,193 INFO L82 PathProgramCache]: Analyzing trace with hash 830437686, now seen corresponding path program 1 times [2021-10-13 06:44:35,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:44:35,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286923537] [2021-10-13 06:44:35,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:44:35,193 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:44:35,221 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 06:44:35,221 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1450061623] [2021-10-13 06:44:35,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:44:35,222 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 06:44:35,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:44:35,224 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 06:44:35,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 06:44:35,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:44:35,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 06:44:35,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:44:35,407 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 06:44:35,408 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:44:35,462 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 06:44:35,462 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:44:35,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286923537] [2021-10-13 06:44:35,463 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 06:44:35,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450061623] [2021-10-13 06:44:35,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450061623] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 06:44:35,487 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:44:35,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-13 06:44:35,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9502189] [2021-10-13 06:44:35,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 06:44:35,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:44:35,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 06:44:35,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-13 06:44:35,502 INFO L87 Difference]: Start difference. First operand 12 states and 16 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:35,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:44:35,575 INFO L93 Difference]: Finished difference Result 32 states and 45 transitions. [2021-10-13 06:44:35,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 06:44:35,576 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-13 06:44:35,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:44:35,577 INFO L225 Difference]: With dead ends: 32 [2021-10-13 06:44:35,577 INFO L226 Difference]: Without dead ends: 23 [2021-10-13 06:44:35,578 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 27.8ms TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-10-13 06:44:35,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-13 06:44:35,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2021-10-13 06:44:35,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 19 states have internal predecessors, (25), 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) [2021-10-13 06:44:35,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2021-10-13 06:44:35,585 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 10 [2021-10-13 06:44:35,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:44:35,585 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2021-10-13 06:44:35,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:35,586 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2021-10-13 06:44:35,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 06:44:35,587 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:44:35,587 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-13 06:44:35,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-13 06:44:35,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 06:44:35,804 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:44:35,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:44:35,805 INFO L82 PathProgramCache]: Analyzing trace with hash 2117943862, now seen corresponding path program 1 times [2021-10-13 06:44:35,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:44:35,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198161672] [2021-10-13 06:44:35,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:44:35,806 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:44:35,812 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 06:44:35,813 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [781980784] [2021-10-13 06:44:35,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:44:35,813 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 06:44:35,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:44:35,819 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 06:44:35,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-13 06:44:35,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:44:35,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 06:44:35,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:44:35,996 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-13 06:44:35,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:44:36,084 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-13 06:44:36,085 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:44:36,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198161672] [2021-10-13 06:44:36,085 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 06:44:36,086 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781980784] [2021-10-13 06:44:36,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781980784] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 06:44:36,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1044985806] [2021-10-13 06:44:36,114 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-10-13 06:44:36,115 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 06:44:36,122 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 06:44:36,128 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 06:44:36,129 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 06:44:36,190 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:36,196 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 06:44:36,197 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:36,197 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-10-13 06:44:36,204 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 06:44:36,205 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:36,206 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-10-13 06:44:36,217 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 176 [2021-10-13 06:44:36,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 06:44:36,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 06:44:36,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 06:44:36,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 06:44:36,350 INFO L354 Elim1Store]: treesize reduction 141, result has 10.2 percent of original size [2021-10-13 06:44:36,350 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 12 case distinctions, treesize of input 63 treesize of output 62 [2021-10-13 06:44:36,352 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:36,356 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-10-13 06:44:36,357 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:36,358 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-10-13 06:44:36,359 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-13 06:44:36,361 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 06:44:36,412 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:36,417 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:36,421 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 154 [2021-10-13 06:44:36,422 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-13 06:44:36,422 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:173, output treesize:154 [2021-10-13 06:44:36,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-13 06:44:36,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 06:44:36,652 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#length_13| 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) [2021-10-13 06:44:36,655 INFO L168 Benchmark]: Toolchain (without parser) took 3050.78 ms. Allocated memory was 111.1 MB in the beginning and 136.3 MB in the end (delta: 25.2 MB). Free memory was 75.0 MB in the beginning and 78.5 MB in the end (delta: -3.5 MB). Peak memory consumption was 22.0 MB. Max. memory is 16.1 GB. [2021-10-13 06:44:36,656 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 111.1 MB. Free memory was 82.6 MB in the beginning and 82.6 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:44:36,656 INFO L168 Benchmark]: CACSL2BoogieTranslator took 229.56 ms. Allocated memory is still 111.1 MB. Free memory was 74.7 MB in the beginning and 86.0 MB in the end (delta: -11.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 06:44:36,657 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.29 ms. Allocated memory is still 111.1 MB. Free memory was 86.0 MB in the beginning and 84.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 06:44:36,658 INFO L168 Benchmark]: Boogie Preprocessor took 22.88 ms. Allocated memory is still 111.1 MB. Free memory was 84.4 MB in the beginning and 83.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 06:44:36,658 INFO L168 Benchmark]: RCFGBuilder took 446.65 ms. Allocated memory is still 111.1 MB. Free memory was 83.0 MB in the beginning and 71.0 MB in the end (delta: 12.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 06:44:36,659 INFO L168 Benchmark]: TraceAbstraction took 2308.88 ms. Allocated memory was 111.1 MB in the beginning and 136.3 MB in the end (delta: 25.2 MB). Free memory was 70.4 MB in the beginning and 78.5 MB in the end (delta: -8.0 MB). Peak memory consumption was 18.7 MB. Max. memory is 16.1 GB. [2021-10-13 06:44:36,662 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 111.1 MB. Free memory was 82.6 MB in the beginning and 82.6 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 229.56 ms. Allocated memory is still 111.1 MB. Free memory was 74.7 MB in the beginning and 86.0 MB in the end (delta: -11.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.29 ms. Allocated memory is still 111.1 MB. Free memory was 86.0 MB in the beginning and 84.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.88 ms. Allocated memory is still 111.1 MB. Free memory was 84.4 MB in the beginning and 83.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 446.65 ms. Allocated memory is still 111.1 MB. Free memory was 83.0 MB in the beginning and 71.0 MB in the end (delta: 12.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2308.88 ms. Allocated memory was 111.1 MB in the beginning and 136.3 MB in the end (delta: 25.2 MB). Free memory was 70.4 MB in the beginning and 78.5 MB in the end (delta: -8.0 MB). Peak memory consumption was 18.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#length_13| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#length_13|: 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. [2021-10-13 06:44:36,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/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-4e77c04 [2021-10-13 06:44:39,078 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 06:44:39,080 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 06:44:39,132 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 06:44:39,133 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 06:44:39,137 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 06:44:39,139 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 06:44:39,143 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 06:44:39,146 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 06:44:39,154 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 06:44:39,155 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 06:44:39,157 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 06:44:39,157 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 06:44:39,160 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 06:44:39,163 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 06:44:39,167 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 06:44:39,168 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 06:44:39,169 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 06:44:39,172 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 06:44:39,183 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 06:44:39,185 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 06:44:39,187 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 06:44:39,190 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 06:44:39,192 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 06:44:39,200 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 06:44:39,201 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 06:44:39,201 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 06:44:39,204 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 06:44:39,204 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 06:44:39,205 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 06:44:39,206 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 06:44:39,207 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 06:44:39,209 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 06:44:39,210 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 06:44:39,211 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 06:44:39,211 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 06:44:39,212 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 06:44:39,212 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 06:44:39,212 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 06:44:39,214 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 06:44:39,215 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 06:44:39,216 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 06:44:39,261 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 06:44:39,261 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 06:44:39,262 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 06:44:39,262 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 06:44:39,263 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 06:44:39,263 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 06:44:39,263 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 06:44:39,263 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 06:44:39,263 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 06:44:39,265 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 06:44:39,266 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 06:44:39,266 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 06:44:39,266 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 06:44:39,267 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 06:44:39,267 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 06:44:39,267 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 06:44:39,267 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 06:44:39,267 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 06:44:39,267 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 06:44:39,268 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 06:44:39,268 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 06:44:39,268 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 06:44:39,268 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 06:44:39,268 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 06:44:39,269 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 06:44:39,269 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 06:44:39,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:44:39,269 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 06:44:39,269 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 06:44:39,270 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 06:44:39,270 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 06:44:39,270 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 06:44:39,270 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 06:44:39,270 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 06:44:39,271 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 06:44:39,271 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_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0cb0e77f89daac547c42b2171c72b94010312494 [2021-10-13 06:44:39,687 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 06:44:39,712 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 06:44:39,715 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 06:44:39,716 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 06:44:39,716 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 06:44:39,719 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/array-multidimensional/init-2-n-u.c [2021-10-13 06:44:39,788 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/data/5f2d9e76c/c22ffcfb5cdb4b69bd5afa596d795f27/FLAG5d454992c [2021-10-13 06:44:40,271 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 06:44:40,271 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/sv-benchmarks/c/array-multidimensional/init-2-n-u.c [2021-10-13 06:44:40,278 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/data/5f2d9e76c/c22ffcfb5cdb4b69bd5afa596d795f27/FLAG5d454992c [2021-10-13 06:44:40,634 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/data/5f2d9e76c/c22ffcfb5cdb4b69bd5afa596d795f27 [2021-10-13 06:44:40,637 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 06:44:40,638 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 06:44:40,640 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 06:44:40,640 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 06:44:40,658 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 06:44:40,659 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:44:40" (1/1) ... [2021-10-13 06:44:40,660 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5197a867 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:40, skipping insertion in model container [2021-10-13 06:44:40,660 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:44:40" (1/1) ... [2021-10-13 06:44:40,668 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 06:44:40,685 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 06:44:40,866 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_a5714ac4-f8d2-4456-85db-279880dfaff3/sv-benchmarks/c/array-multidimensional/init-2-n-u.c[322,335] [2021-10-13 06:44:40,881 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:44:40,891 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 06:44:40,910 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_a5714ac4-f8d2-4456-85db-279880dfaff3/sv-benchmarks/c/array-multidimensional/init-2-n-u.c[322,335] [2021-10-13 06:44:40,918 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:44:40,932 INFO L208 MainTranslator]: Completed translation [2021-10-13 06:44:40,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:40 WrapperNode [2021-10-13 06:44:40,933 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 06:44:40,934 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 06:44:40,934 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 06:44:40,934 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 06:44:40,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:40" (1/1) ... [2021-10-13 06:44:40,975 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:40" (1/1) ... [2021-10-13 06:44:41,000 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 06:44:41,001 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 06:44:41,002 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 06:44:41,002 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 06:44:41,010 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:40" (1/1) ... [2021-10-13 06:44:41,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:40" (1/1) ... [2021-10-13 06:44:41,023 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:40" (1/1) ... [2021-10-13 06:44:41,024 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:40" (1/1) ... [2021-10-13 06:44:41,034 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:40" (1/1) ... [2021-10-13 06:44:41,038 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:40" (1/1) ... [2021-10-13 06:44:41,044 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:40" (1/1) ... [2021-10-13 06:44:41,047 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 06:44:41,054 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 06:44:41,054 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 06:44:41,055 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 06:44:41,055 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:40" (1/1) ... [2021-10-13 06:44:41,062 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:44:41,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:44:41,093 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 06:44:41,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 06:44:41,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 06:44:41,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 06:44:41,146 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-13 06:44:41,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 06:44:41,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 06:44:41,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 06:44:41,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-13 06:44:41,450 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 06:44:41,450 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-13 06:44:41,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:44:41 BoogieIcfgContainer [2021-10-13 06:44:41,452 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 06:44:41,454 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 06:44:41,454 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 06:44:41,457 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 06:44:41,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:44:40" (1/3) ... [2021-10-13 06:44:41,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@794a90c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:44:41, skipping insertion in model container [2021-10-13 06:44:41,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:40" (2/3) ... [2021-10-13 06:44:41,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@794a90c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:44:41, skipping insertion in model container [2021-10-13 06:44:41,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:44:41" (3/3) ... [2021-10-13 06:44:41,460 INFO L111 eAbstractionObserver]: Analyzing ICFG init-2-n-u.c [2021-10-13 06:44:41,465 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 06:44:41,465 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 06:44:41,510 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 06:44:41,516 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 [2021-10-13 06:44:41,517 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 06:44:41,529 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 16 states have internal predecessors, (25), 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) [2021-10-13 06:44:41,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 06:44:41,534 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:44:41,534 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:44:41,535 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:44:41,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:44:41,540 INFO L82 PathProgramCache]: Analyzing trace with hash 252221889, now seen corresponding path program 1 times [2021-10-13 06:44:41,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 06:44:41,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [245596393] [2021-10-13 06:44:41,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:44:41,553 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 06:44:41,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 06:44:41,557 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 06:44:41,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 06:44:41,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:44:41,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 06:44:41,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:44:41,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:44:41,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:44:41,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:44:41,914 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 06:44:41,915 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [245596393] [2021-10-13 06:44:41,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [245596393] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 06:44:41,916 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:44:41,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 06:44:41,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744063701] [2021-10-13 06:44:41,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 06:44:41,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 06:44:41,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 06:44:41,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 06:44:41,949 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 16 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:42,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:44:42,047 INFO L93 Difference]: Finished difference Result 36 states and 58 transitions. [2021-10-13 06:44:42,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 06:44:42,050 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-13 06:44:42,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:44:42,059 INFO L225 Difference]: With dead ends: 36 [2021-10-13 06:44:42,059 INFO L226 Difference]: Without dead ends: 17 [2021-10-13 06:44:42,062 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 06:44:42,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-13 06:44:42,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-10-13 06:44:42,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 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) [2021-10-13 06:44:42,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2021-10-13 06:44:42,098 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 8 [2021-10-13 06:44:42,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:44:42,099 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2021-10-13 06:44:42,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:42,099 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2021-10-13 06:44:42,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 06:44:42,100 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:44:42,101 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:44:42,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 06:44:42,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 06:44:42,312 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:44:42,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:44:42,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1647448607, now seen corresponding path program 1 times [2021-10-13 06:44:42,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 06:44:42,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [82904810] [2021-10-13 06:44:42,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:44:42,315 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 06:44:42,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 06:44:42,317 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 06:44:42,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 06:44:42,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:44:42,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 06:44:42,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:44:42,449 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 06:44:42,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:44:42,507 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 06:44:42,507 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 06:44:42,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [82904810] [2021-10-13 06:44:42,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [82904810] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 06:44:42,508 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:44:42,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-13 06:44:42,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492977605] [2021-10-13 06:44:42,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 06:44:42,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 06:44:42,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 06:44:42,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-13 06:44:42,511 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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) [2021-10-13 06:44:42,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:44:42,638 INFO L93 Difference]: Finished difference Result 41 states and 54 transitions. [2021-10-13 06:44:42,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 06:44:42,651 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-13 06:44:42,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:44:42,652 INFO L225 Difference]: With dead ends: 41 [2021-10-13 06:44:42,652 INFO L226 Difference]: Without dead ends: 28 [2021-10-13 06:44:42,653 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 39.8ms TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-10-13 06:44:42,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-13 06:44:42,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2021-10-13 06:44:42,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.25) internal successors, (30), 24 states have internal predecessors, (30), 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) [2021-10-13 06:44:42,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2021-10-13 06:44:42,672 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 14 [2021-10-13 06:44:42,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:44:42,673 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2021-10-13 06:44:42,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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) [2021-10-13 06:44:42,673 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2021-10-13 06:44:42,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 06:44:42,674 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:44:42,674 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:44:42,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 06:44:42,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 06:44:42,875 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:44:42,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:44:42,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1377549151, now seen corresponding path program 1 times [2021-10-13 06:44:42,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 06:44:42,877 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1803400477] [2021-10-13 06:44:42,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:44:42,877 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 06:44:42,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 06:44:42,879 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 06:44:42,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 06:44:42,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:44:42,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 06:44:42,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:44:43,093 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-13 06:44:43,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:44:43,242 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-13 06:44:43,243 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 06:44:43,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1803400477] [2021-10-13 06:44:43,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1803400477] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 06:44:43,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1220255378] [2021-10-13 06:44:43,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:44:43,244 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 06:44:43,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 06:44:43,245 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 06:44:43,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-10-13 06:44:43,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:44:43,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 06:44:43,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:44:43,513 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-13 06:44:43,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:44:43,592 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-13 06:44:43,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1220255378] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 06:44:43,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077270888] [2021-10-13 06:44:43,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:44:43,598 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 06:44:43,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:44:43,602 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 06:44:43,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-13 06:44:43,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:44:43,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 06:44:43,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:44:43,831 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-13 06:44:43,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:44:43,886 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-13 06:44:43,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077270888] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 06:44:43,887 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 06:44:43,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 10 [2021-10-13 06:44:43,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198902395] [2021-10-13 06:44:43,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 06:44:43,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 06:44:43,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 06:44:43,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-13 06:44:43,896 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 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) [2021-10-13 06:44:44,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:44:44,253 INFO L93 Difference]: Finished difference Result 75 states and 95 transitions. [2021-10-13 06:44:44,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 06:44:44,253 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 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 18 [2021-10-13 06:44:44,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:44:44,255 INFO L225 Difference]: With dead ends: 75 [2021-10-13 06:44:44,255 INFO L226 Difference]: Without dead ends: 56 [2021-10-13 06:44:44,255 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 190.8ms TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2021-10-13 06:44:44,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-10-13 06:44:44,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 45. [2021-10-13 06:44:44,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.2272727272727273) internal successors, (54), 44 states have internal predecessors, (54), 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) [2021-10-13 06:44:44,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2021-10-13 06:44:44,275 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 18 [2021-10-13 06:44:44,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:44:44,275 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2021-10-13 06:44:44,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 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) [2021-10-13 06:44:44,276 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2021-10-13 06:44:44,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 06:44:44,279 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:44:44,279 INFO L512 BasicCegarLoop]: trace histogram [12, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:44:44,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-10-13 06:44:44,489 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 06:44:44,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-13 06:44:44,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 06:44:44,883 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:44:44,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:44:44,883 INFO L82 PathProgramCache]: Analyzing trace with hash 372613665, now seen corresponding path program 2 times [2021-10-13 06:44:44,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 06:44:44,884 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [824409004] [2021-10-13 06:44:44,884 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 06:44:44,884 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 06:44:44,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 06:44:44,887 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 06:44:44,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 06:44:45,086 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 06:44:45,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 06:44:45,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 06:44:45,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:44:45,306 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 51 proven. 21 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-10-13 06:44:45,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:44:45,746 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 51 proven. 21 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-10-13 06:44:45,746 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 06:44:45,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [824409004] [2021-10-13 06:44:45,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [824409004] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 06:44:45,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1695521210] [2021-10-13 06:44:45,747 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 06:44:45,747 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 06:44:45,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 06:44:45,748 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 06:44:45,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-10-13 06:44:46,054 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 06:44:46,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 06:44:46,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 06:44:46,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:44:46,172 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 51 proven. 21 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-10-13 06:44:46,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:44:46,277 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 51 proven. 21 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-10-13 06:44:46,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1695521210] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 06:44:46,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810773429] [2021-10-13 06:44:46,278 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 06:44:46,278 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 06:44:46,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:44:46,279 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 06:44:46,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-13 06:44:46,457 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 06:44:46,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 06:44:46,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 06:44:46,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:44:46,741 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-10-13 06:44:46,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:44:47,001 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-10-13 06:44:47,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810773429] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 06:44:47,002 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 06:44:47,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 5, 5] total 24 [2021-10-13 06:44:47,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484992422] [2021-10-13 06:44:47,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 06:44:47,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 06:44:47,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 06:44:47,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=434, Unknown=0, NotChecked=0, Total=552 [2021-10-13 06:44:47,005 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 24 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) [2021-10-13 06:44:54,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:44:54,606 INFO L93 Difference]: Finished difference Result 215 states and 291 transitions. [2021-10-13 06:44:54,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2021-10-13 06:44:54,607 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 24 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 26 [2021-10-13 06:44:54,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:44:54,610 INFO L225 Difference]: With dead ends: 215 [2021-10-13 06:44:54,610 INFO L226 Difference]: Without dead ends: 180 [2021-10-13 06:44:54,616 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4214 ImplicationChecksByTransitivity, 6457.9ms TimeCoverageRelationStatistics Valid=2944, Invalid=9938, Unknown=0, NotChecked=0, Total=12882 [2021-10-13 06:44:54,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-10-13 06:44:54,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 153. [2021-10-13 06:44:54,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 1.144736842105263) internal successors, (174), 152 states have internal predecessors, (174), 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) [2021-10-13 06:44:54,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 174 transitions. [2021-10-13 06:44:54,643 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 174 transitions. Word has length 26 [2021-10-13 06:44:54,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:44:54,644 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 174 transitions. [2021-10-13 06:44:54,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 24 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) [2021-10-13 06:44:54,644 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 174 transitions. [2021-10-13 06:44:54,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-10-13 06:44:54,648 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:44:54,649 INFO L512 BasicCegarLoop]: trace histogram [84, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:44:54,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-10-13 06:44:54,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-13 06:44:55,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-13 06:44:55,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 06:44:55,258 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:44:55,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:44:55,259 INFO L82 PathProgramCache]: Analyzing trace with hash -540304415, now seen corresponding path program 3 times [2021-10-13 06:44:55,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 06:44:55,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [682755638] [2021-10-13 06:44:55,260 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 06:44:55,260 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 06:44:55,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 06:44:55,261 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 06:44:55,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-13 06:44:55,652 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2021-10-13 06:44:55,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 06:44:55,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 06:44:55,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:44:56,205 INFO L134 CoverageAnalysis]: Checked inductivity of 4041 backedges. 1131 proven. 105 refuted. 0 times theorem prover too weak. 2805 trivial. 0 not checked. [2021-10-13 06:44:56,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:44:57,366 INFO L134 CoverageAnalysis]: Checked inductivity of 4041 backedges. 1131 proven. 105 refuted. 0 times theorem prover too weak. 2805 trivial. 0 not checked. [2021-10-13 06:44:57,366 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 06:44:57,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [682755638] [2021-10-13 06:44:57,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [682755638] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 06:44:57,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [920402290] [2021-10-13 06:44:57,367 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 06:44:57,367 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 06:44:57,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 06:44:57,376 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 06:44:57,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-10-13 06:44:58,186 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (11) with exit command (exit)) stderr output: Fatal failure within void CVC4::TheoryEngine::check(CVC4::theory::Theory::Effort) at /barrett/scratch/noetzli/barrett-cluster/cvc4_build_scripts/dest_fixed/src/cvc4-2020-08-25/src/theory/theory_engine.cpp:545 Check failure d_curr_model->isBuiltSuccess() [2021-10-13 06:44:58,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 134 [2021-10-13 06:44:58,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-13 06:44:58,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 06:44:58,389 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (11) with exit command (exit)) Received EOF on stdin. stderr output: Fatal failure within void CVC4::TheoryEngine::check(CVC4::theory::Theory::Effort) at /barrett/scratch/noetzli/barrett-cluster/cvc4_build_scripts/dest_fixed/src/cvc4-2020-08-25/src/theory/theory_engine.cpp:545 Check failure d_curr_model->isBuiltSuccess() at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:232) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:90) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) 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) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (11) with exit command (exit)) Received EOF on stdin. stderr output: Fatal failure within void CVC4::TheoryEngine::check(CVC4::theory::Theory::Effort) at /barrett/scratch/noetzli/barrett-cluster/cvc4_build_scripts/dest_fixed/src/cvc4-2020-08-25/src/theory/theory_engine.cpp:545 Check failure d_curr_model->isBuiltSuccess() at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:241) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:260) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.AnnotateAndAsserterWithStmtOrderPrioritization.annotateAndAssertOutsideLoopFirst2(AnnotateAndAsserterWithStmtOrderPrioritization.java:277) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.AnnotateAndAsserterWithStmtOrderPrioritization.buildAnnotatedSsaAndAssertTerms(AnnotateAndAsserterWithStmtOrderPrioritization.java:214) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.checkTrace(TraceCheck.java:312) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:211) ... 32 more Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:237) ... 40 more [2021-10-13 06:44:58,394 INFO L168 Benchmark]: Toolchain (without parser) took 17755.12 ms. Allocated memory was 71.3 MB in the beginning and 104.9 MB in the end (delta: 33.6 MB). Free memory was 53.2 MB in the beginning and 64.1 MB in the end (delta: -10.9 MB). Peak memory consumption was 23.6 MB. Max. memory is 16.1 GB. [2021-10-13 06:44:58,395 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 71.3 MB. Free memory is still 52.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:44:58,395 INFO L168 Benchmark]: CACSL2BoogieTranslator took 293.53 ms. Allocated memory is still 71.3 MB. Free memory was 53.0 MB in the beginning and 43.1 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 06:44:58,396 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.42 ms. Allocated memory is still 71.3 MB. Free memory was 42.9 MB in the beginning and 53.5 MB in the end (delta: -10.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 06:44:58,396 INFO L168 Benchmark]: Boogie Preprocessor took 51.98 ms. Allocated memory is still 71.3 MB. Free memory was 53.5 MB in the beginning and 52.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:44:58,397 INFO L168 Benchmark]: RCFGBuilder took 398.15 ms. Allocated memory is still 71.3 MB. Free memory was 52.2 MB in the beginning and 42.1 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 06:44:58,397 INFO L168 Benchmark]: TraceAbstraction took 16939.04 ms. Allocated memory was 71.3 MB in the beginning and 104.9 MB in the end (delta: 33.6 MB). Free memory was 41.5 MB in the beginning and 64.1 MB in the end (delta: -22.6 MB). Peak memory consumption was 14.4 MB. Max. memory is 16.1 GB. [2021-10-13 06:44:58,400 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 71.3 MB. Free memory is still 52.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 293.53 ms. Allocated memory is still 71.3 MB. Free memory was 53.0 MB in the beginning and 43.1 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 66.42 ms. Allocated memory is still 71.3 MB. Free memory was 42.9 MB in the beginning and 53.5 MB in the end (delta: -10.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 51.98 ms. Allocated memory is still 71.3 MB. Free memory was 53.5 MB in the beginning and 52.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 398.15 ms. Allocated memory is still 71.3 MB. Free memory was 52.2 MB in the beginning and 42.1 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 16939.04 ms. Allocated memory was 71.3 MB in the beginning and 104.9 MB in the end (delta: 33.6 MB). Free memory was 41.5 MB in the beginning and 64.1 MB in the end (delta: -22.6 MB). Peak memory consumption was 14.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (11) with exit command (exit)) Received EOF on stdin. stderr output: Fatal failure within void CVC4::TheoryEngine::check(CVC4::theory::Theory::Effort) at /barrett/scratch/noetzli/barrett-cluster/cvc4_build_scripts/dest_fixed/src/cvc4-2020-08-25/src/theory/theory_engine.cpp:545 Check failure d_curr_model->isBuiltSuccess() de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (11) with exit command (exit)) Received EOF on stdin. stderr output: Fatal failure within void CVC4::TheoryEngine::check(CVC4::theory::Theory::Effort) at /barrett/scratch/noetzli/barrett-cluster/cvc4_build_scripts/dest_fixed/src/cvc4-2020-08-25/src/theory/theory_engine.cpp:545 Check failure d_curr_model->isBuiltSuccess() : de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:232) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-13 06:44:58,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5714ac4-f8d2-4456-85db-279880dfaff3/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...